/**
 * ============================================================================
 * TERADATA UNIFIED THEME - AIFactory UI Redesign
 * ============================================================================
 * Version: 2.0
 * Date: January 18, 2026
 *
 * This file consolidates all Teradata branding into a single, unified theme.
 * It is designed to gradually replace the fragmented CSS architecture.
 *
 * Table of Contents:
 * 1. CSS Reset & Base
 * 2. Design Tokens (CSS Custom Properties)
 * 3. Typography
 * 4. Layout Utilities
 * 5. Buttons
 * 6. Form Controls
 * 7. Cards
 * 8. Navigation
 * 9. Modals & Panels
 * 10. Messages (Chat)
 * 11. Feedback Components
 * 12. Utilities
 * 13. Animations
 * 14. Dark Mode
 * 15. Responsive Breakpoints
 * ============================================================================
 */

/* ============================================================================
   1. CSS RESET & BASE
   ============================================================================ */

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--td-font-sans);
    font-size: var(--td-text-base);
    line-height: 1.5;
    color: var(--td-text-primary);
    background-color: var(--td-bg-primary);
}

/* ============================================================================
   2. DESIGN TOKENS (CSS Custom Properties)
   ============================================================================ */

:root {
    /* ========================================
       BRAND COLORS - Teradata Official
       ======================================== */

    /* Primary: Blaze Orange */
    --td-orange-50: #FFF7F0;
    --td-orange-100: #FFEDD9;
    --td-orange-200: #FFD6B3;
    --td-orange-300: #FFB980;
    --td-orange-400: #FF934D;
    --td-orange-500: #FF5F02;  /* Primary */
    --td-orange-600: #E55500;  /* Hover */
    --td-orange-700: #CC4A00;
    --td-orange-800: #993800;
    --td-orange-900: #662500;

    /* Secondary: Royal Blue */
    --td-blue-50: #EEF1FE;
    --td-blue-100: #DDE3FD;
    --td-blue-200: #BBC7FB;
    --td-blue-300: #8AA0F8;
    --td-blue-400: #5978F5;
    --td-blue-500: #3054F3;   /* Primary */
    --td-blue-600: #2445D4;   /* Hover */
    --td-blue-700: #1C36A8;
    --td-blue-800: #15287C;
    --td-blue-900: #0D1950;

    /* Dark: Midnight Navy */
    --td-navy-50: #E6EBF0;
    --td-navy-100: #B3C4D4;
    --td-navy-200: #809DB8;
    --td-navy-300: #4D769C;
    --td-navy-400: #265580;
    --td-navy-500: #0A3352;
    --td-navy-600: #082B47;
    --td-navy-700: #00233C;   /* Primary — official Teradata Daintree Navy */
    --td-navy-800: #011A2D;
    --td-navy-900: #00111E;

    /* Neutrals */
    --td-gray-50: #FAFAFA;
    --td-gray-100: #F5F5F5;
    --td-gray-200: #E5E5E5;
    --td-gray-300: #D4D4D4;
    --td-gray-400: #A3A3A3;
    --td-gray-500: #737373;
    --td-gray-600: #525252;
    --td-gray-700: #404040;
    --td-gray-800: #262626;
    --td-gray-900: #171717;
    --td-white: #FFFFFF;
    --td-black: #000000;

    /* Semantic Colors */
    --td-success-50: #E8F5E9;
    --td-success-100: #C8E6C9;
    --td-success-500: #4CAF50;
    --td-success-700: #388E3C;

    --td-warning-50: #FFF3E0;
    --td-warning-100: #FFE0B2;
    --td-warning-500: #FF9800;
    --td-warning-700: #F57C00;

    --td-error-50: #FFEBEE;
    --td-error-100: #FFCDD2;
    --td-error-500: #F44336;
    --td-error-700: #D32F2F;

    --td-info-50: #E3F2FD;
    --td-info-100: #BBDEFB;
    --td-info-500: #2196F3;
    --td-info-700: #1976D2;

    /* ========================================
       SEMANTIC TOKENS
       ======================================== */

    /* Background Colors */
    --td-bg-primary: var(--td-white);
    --td-bg-secondary: var(--td-gray-50);
    --td-bg-tertiary: var(--td-gray-100);
    --td-bg-inverse: var(--td-navy-700);
    --td-bg-accent: var(--td-orange-50);
    --td-bg-interactive: var(--td-blue-50);

    /* Text Colors */
    --td-text-primary: var(--td-gray-900);
    --td-text-secondary: var(--td-gray-600);
    --td-text-tertiary: var(--td-gray-500);
    --td-text-disabled: var(--td-gray-400);
    --td-text-inverse: var(--td-white);
    --td-text-accent: var(--td-orange-500);
    --td-text-interactive: var(--td-blue-500);
    --td-text-link: var(--td-blue-600);
    --td-text-link-hover: var(--td-blue-700);

    /* Border Colors */
    --td-border-light: var(--td-gray-200);
    --td-border-default: var(--td-gray-300);
    --td-border-dark: var(--td-gray-400);
    --td-border-focus: var(--td-blue-500);
    --td-border-error: var(--td-error-500);
    --td-border-success: var(--td-success-500);

    /* ========================================
       TYPOGRAPHY
       ======================================== */

    /* Font Families */
    --td-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --td-font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, 'Liberation Mono', Menlo, monospace;

    /* Font Sizes */
    --td-text-xs: 0.75rem;    /* 12px */
    --td-text-sm: 0.875rem;   /* 14px */
    --td-text-base: 1rem;     /* 16px */
    --td-text-lg: 1.125rem;   /* 18px */
    --td-text-xl: 1.25rem;    /* 20px */
    --td-text-2xl: 1.5rem;    /* 24px */
    --td-text-3xl: 1.875rem;  /* 30px */
    --td-text-4xl: 2.25rem;   /* 36px */

    /* Font Weights */
    --td-font-normal: 400;
    --td-font-medium: 500;
    --td-font-semibold: 600;
    --td-font-bold: 700;

    /* Line Heights */
    --td-leading-none: 1;
    --td-leading-tight: 1.25;
    --td-leading-snug: 1.375;
    --td-leading-normal: 1.5;
    --td-leading-relaxed: 1.625;

    /* ========================================
       SPACING
       ======================================== */

    --td-space-0: 0;
    --td-space-1: 0.25rem;    /* 4px */
    --td-space-2: 0.5rem;     /* 8px */
    --td-space-3: 0.75rem;    /* 12px */
    --td-space-4: 1rem;       /* 16px */
    --td-space-5: 1.25rem;    /* 20px */
    --td-space-6: 1.5rem;     /* 24px */
    --td-space-8: 2rem;       /* 32px */
    --td-space-10: 2.5rem;    /* 40px */
    --td-space-12: 3rem;      /* 48px */
    --td-space-16: 4rem;      /* 64px */
    --td-space-20: 5rem;      /* 80px */

    /* ========================================
       BORDER RADIUS
       ======================================== */

    --td-radius-none: 0;
    --td-radius-sm: 0.25rem;  /* 4px */
    --td-radius-md: 0.5rem;   /* 8px */
    --td-radius-lg: 0.75rem;  /* 12px */
    --td-radius-xl: 1rem;     /* 16px */
    --td-radius-2xl: 1.5rem;  /* 24px */
    --td-radius-full: 9999px;

    /* ========================================
       SHADOWS
       ======================================== */

    --td-shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --td-shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --td-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --td-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --td-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --td-shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --td-shadow-orange: 0 4px 14px 0 rgba(255, 95, 2, 0.3);
    --td-shadow-blue: 0 4px 14px 0 rgba(48, 84, 243, 0.3);
    --td-shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);

    /* ========================================
       TRANSITIONS
       ======================================== */

    --td-duration-fast: 150ms;
    --td-duration-normal: 200ms;
    --td-duration-slow: 300ms;
    --td-duration-slower: 500ms;

    --td-ease-default: cubic-bezier(0.4, 0, 0.2, 1);
    --td-ease-in: cubic-bezier(0.4, 0, 1, 1);
    --td-ease-out: cubic-bezier(0, 0, 0.2, 1);
    --td-ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --td-ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* ========================================
       Z-INDEX SCALE
       ======================================== */

    --td-z-dropdown: 100;
    --td-z-sticky: 200;
    --td-z-fixed: 300;
    --td-z-drawer: 400;
    --td-z-modal-backdrop: 500;
    --td-z-modal: 600;
    --td-z-popover: 700;
    --td-z-tooltip: 800;
    --td-z-notification: 900;

    /* ========================================
       LAYOUT
       ======================================== */

    --td-sidebar-width: 280px;
    --td-sidebar-collapsed: 60px;
    --td-header-height: 56px;
    --td-input-height: 56px;
    --td-max-content-width: 1200px;
}

/* ============================================================================
   3. TYPOGRAPHY
   ============================================================================ */

/* Headings */
.td-h1, h1.td {
    font-size: var(--td-text-3xl);
    font-weight: var(--td-font-bold);
    line-height: var(--td-leading-tight);
    color: var(--td-text-primary);
    margin: 0 0 var(--td-space-4);
}

.td-h2, h2.td {
    font-size: var(--td-text-2xl);
    font-weight: var(--td-font-semibold);
    line-height: var(--td-leading-tight);
    color: var(--td-text-primary);
    margin: 0 0 var(--td-space-3);
}

.td-h3, h3.td {
    font-size: var(--td-text-xl);
    font-weight: var(--td-font-semibold);
    line-height: var(--td-leading-snug);
    color: var(--td-text-primary);
    margin: 0 0 var(--td-space-3);
}

.td-h4, h4.td {
    font-size: var(--td-text-lg);
    font-weight: var(--td-font-medium);
    line-height: var(--td-leading-snug);
    color: var(--td-text-primary);
    margin: 0 0 var(--td-space-2);
}

/* Body Text */
.td-body-lg {
    font-size: var(--td-text-lg);
    line-height: var(--td-leading-relaxed);
}

.td-body {
    font-size: var(--td-text-base);
    line-height: var(--td-leading-normal);
}

.td-body-sm {
    font-size: var(--td-text-sm);
    line-height: var(--td-leading-normal);
}

.td-caption {
    font-size: var(--td-text-xs);
    line-height: var(--td-leading-normal);
    color: var(--td-text-tertiary);
}

/* Code */
.td-code, code.td {
    font-family: var(--td-font-mono);
    font-size: 0.875em;
    background: var(--td-bg-tertiary);
    padding: var(--td-space-1) var(--td-space-2);
    border-radius: var(--td-radius-sm);
}

/* ============================================================================
   4. LAYOUT UTILITIES
   ============================================================================ */

/* Container */
.td-container {
    width: 100%;
    max-width: var(--td-max-content-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--td-space-4);
    padding-right: var(--td-space-4);
}

/* Flex */
.td-flex { display: flex; }
.td-inline-flex { display: inline-flex; }
.td-flex-col { flex-direction: column; }
.td-flex-wrap { flex-wrap: wrap; }
.td-items-start { align-items: flex-start; }
.td-items-center { align-items: center; }
.td-items-end { align-items: flex-end; }
.td-justify-start { justify-content: flex-start; }
.td-justify-center { justify-content: center; }
.td-justify-end { justify-content: flex-end; }
.td-justify-between { justify-content: space-between; }
.td-gap-1 { gap: var(--td-space-1); }
.td-gap-2 { gap: var(--td-space-2); }
.td-gap-3 { gap: var(--td-space-3); }
.td-gap-4 { gap: var(--td-space-4); }
.td-gap-6 { gap: var(--td-space-6); }
.td-gap-8 { gap: var(--td-space-8); }
.td-flex-1 { flex: 1 1 0%; }
.td-flex-auto { flex: 1 1 auto; }
.td-flex-none { flex: none; }

/* Grid */
.td-grid { display: grid; }
.td-grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.td-grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.td-grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.td-grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ============================================================================
   5. BUTTONS
   ============================================================================ */

/* Base Button */
.td-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--td-space-2);
    padding: var(--td-space-2) var(--td-space-4);
    min-height: 40px;
    font-family: var(--td-font-sans);
    font-size: var(--td-text-sm);
    font-weight: var(--td-font-semibold);
    line-height: 1;
    text-decoration: none;
    border: none;
    border-radius: var(--td-radius-md);
    cursor: pointer;
    transition: all var(--td-duration-normal) var(--td-ease-default);
    outline: none;
}

.td-btn:focus-visible {
    box-shadow: 0 0 0 2px var(--td-white), 0 0 0 4px var(--td-blue-500);
}

.td-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Primary Button (Orange) */
.td-btn-primary {
    background: var(--td-orange-500);
    color: var(--td-white);
}

.td-btn-primary:hover:not(:disabled) {
    background: var(--td-orange-600);
    box-shadow: var(--td-shadow-orange);
    transform: translateY(-1px);
}

.td-btn-primary:active:not(:disabled) {
    background: var(--td-orange-700);
    transform: translateY(0);
}

/* Secondary Button (Blue) */
.td-btn-secondary {
    background: var(--td-blue-500);
    color: var(--td-white);
}

.td-btn-secondary:hover:not(:disabled) {
    background: var(--td-blue-600);
    box-shadow: var(--td-shadow-blue);
    transform: translateY(-1px);
}

.td-btn-secondary:active:not(:disabled) {
    background: var(--td-blue-700);
    transform: translateY(0);
}

/* Outline Button */
.td-btn-outline {
    background: transparent;
    color: var(--td-orange-500);
    border: 2px solid var(--td-orange-500);
}

.td-btn-outline:hover:not(:disabled) {
    background: var(--td-orange-500);
    color: var(--td-white);
}

/* Ghost Button */
.td-btn-ghost {
    background: transparent;
    color: var(--td-text-secondary);
}

.td-btn-ghost:hover:not(:disabled) {
    background: var(--td-bg-tertiary);
    color: var(--td-text-primary);
}

/* Icon Button */
.td-btn-icon {
    padding: var(--td-space-2);
    min-width: 40px;
    min-height: 40px;
}

/* Button Sizes */
.td-btn-sm {
    padding: var(--td-space-1) var(--td-space-3);
    min-height: 32px;
    font-size: var(--td-text-xs);
}

.td-btn-lg {
    padding: var(--td-space-3) var(--td-space-6);
    min-height: 48px;
    font-size: var(--td-text-base);
}

/* ============================================================================
   6. FORM CONTROLS
   ============================================================================ */

/* Form Group */
.td-form-group {
    margin-bottom: var(--td-space-4);
}

/* Label */
.td-label {
    display: block;
    margin-bottom: var(--td-space-1);
    font-size: var(--td-text-sm);
    font-weight: var(--td-font-medium);
    color: var(--td-text-primary);
}

/* Input Base */
.td-input,
.td-select,
.td-textarea {
    width: 100%;
    padding: var(--td-space-2) var(--td-space-3);
    font-family: var(--td-font-sans);
    font-size: var(--td-text-sm);
    color: var(--td-text-primary);
    background: var(--td-white);
    border: 1px solid var(--td-border-default);
    border-radius: var(--td-radius-md);
    transition: border-color var(--td-duration-fast), box-shadow var(--td-duration-fast);
    outline: none;
}

.td-input:focus,
.td-select:focus,
.td-textarea:focus {
    border-color: var(--td-blue-500);
    box-shadow: 0 0 0 3px var(--td-blue-100);
}

.td-input::placeholder,
.td-textarea::placeholder {
    color: var(--td-text-disabled);
}

/* Input with icon */
.td-input-wrapper {
    position: relative;
}

.td-input-icon {
    position: absolute;
    left: var(--td-space-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--td-text-tertiary);
    pointer-events: none;
}

.td-input-wrapper .td-input {
    padding-left: var(--td-space-10);
}

/* Select */
.td-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 20 20' fill='%23737373'%3E%3Cpath d='M7 7l3 3 3-3'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--td-space-3) center;
    padding-right: var(--td-space-10);
}

/* Textarea */
.td-textarea {
    min-height: 100px;
    resize: vertical;
}

/* Toggle/Switch */
.td-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
}

.td-toggle-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.td-toggle-track {
    width: 44px;
    height: 24px;
    background: var(--td-gray-300);
    border-radius: var(--td-radius-full);
    transition: background var(--td-duration-normal);
}

.td-toggle-thumb {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: var(--td-white);
    border-radius: var(--td-radius-full);
    box-shadow: var(--td-shadow-sm);
    transition: transform var(--td-duration-normal);
}

.td-toggle-input:checked + .td-toggle-track {
    background: var(--td-orange-500);
}

.td-toggle-input:checked + .td-toggle-track .td-toggle-thumb {
    transform: translateX(20px);
}

/* Error State */
.td-input-error {
    border-color: var(--td-error-500);
}

.td-input-error:focus {
    box-shadow: 0 0 0 3px var(--td-error-100);
}

.td-error-text {
    margin-top: var(--td-space-1);
    font-size: var(--td-text-xs);
    color: var(--td-error-500);
}

/* Help Text */
.td-help-text {
    margin-top: var(--td-space-1);
    font-size: var(--td-text-xs);
    color: var(--td-text-tertiary);
}

/* ============================================================================
   7. CARDS
   ============================================================================ */

.td-card {
    background: var(--td-white);
    border: 1px solid var(--td-border-light);
    border-radius: var(--td-radius-lg);
    overflow: hidden;
    transition: border-color var(--td-duration-normal), box-shadow var(--td-duration-normal);
}

.td-card:hover {
    border-color: var(--td-blue-300);
    box-shadow: var(--td-shadow-md);
}

.td-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--td-space-4);
    border-bottom: 1px solid var(--td-border-light);
}

.td-card-title {
    font-size: var(--td-text-base);
    font-weight: var(--td-font-semibold);
    color: var(--td-text-primary);
    margin: 0;
}

.td-card-body {
    padding: var(--td-space-4);
}

.td-card-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--td-space-2);
    padding: var(--td-space-3) var(--td-space-4);
    border-top: 1px solid var(--td-border-light);
    background: var(--td-bg-secondary);
}

/* Tool Card Variant */
.td-tool-card {
    cursor: pointer;
}

.td-tool-card:hover {
    border-color: var(--td-orange-300);
}

.td-tool-card-icon {
    font-size: var(--td-text-2xl);
    margin-right: var(--td-space-3);
}

/* ============================================================================
   8. NAVIGATION
   ============================================================================ */

/* Header */
.td-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--td-header-height);
    padding: 0 var(--td-space-4);
    background: var(--td-white);
    border-bottom: 1px solid var(--td-border-light);
    position: sticky;
    top: 0;
    z-index: var(--td-z-sticky);
}

.td-header-logo {
    display: flex;
    align-items: center;
    gap: var(--td-space-3);
    font-size: var(--td-text-lg);
    font-weight: var(--td-font-bold);
    color: var(--td-text-primary);
    text-decoration: none;
}

.td-header-actions {
    display: flex;
    align-items: center;
    gap: var(--td-space-2);
}

/* Header Layout - Mockup Design */
.td-header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.td-header-center {
    flex: 1;
    max-width: 500px;
    margin: 0 40px;
}

.td-header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Logo - Teradata */
.td-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: inherit;
}

.td-logo-image {
    height: 36px;
    width: auto;
    object-fit: contain;
}

/* Legacy logo styles (hidden when using image) */
.td-logo-icon,
.td-logo-text {
    display: none;
}

/* Search Box - Mockup Design */
.td-search-box {
    position: relative;
    width: 100%;
}

.td-search-input {
    width: 100%;
    padding: 10px 16px 10px 44px;
    border: 1px solid var(--td-gray-200);
    border-radius: 8px;
    font-size: 14px;
    background: var(--td-gray-50);
    transition: all 0.2s;
}

.td-search-input:focus {
    outline: none;
    border-color: var(--td-blue-500);
    background: var(--td-white);
    box-shadow: 0 0 0 3px rgba(48, 84, 243, 0.1);
}

.td-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--td-gray-400);
    pointer-events: none;
}

/* Icon Buttons - Mockup Design */
.td-btn-icon {
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--td-gray-600);
    transition: all 0.2s;
}

.td-btn-icon:hover {
    background: var(--td-gray-100);
    color: var(--td-gray-900);
}

/* Simple View Toggle - Header toggle switch */
.td-header-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0 8px;
}

.td-toggle-label {
    font-size: 12px;
    font-weight: 500;
    color: var(--td-gray-600);
    white-space: nowrap;
}

.td-toggle-switch {
    position: relative;
    display: inline-block;
    width: 36px;
    height: 20px;
}

.td-toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.td-toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--td-gray-300);
    transition: 0.3s;
    border-radius: 20px;
}

.td-toggle-slider:before {
    position: absolute;
    content: "";
    height: 14px;
    width: 14px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

.td-toggle-switch input:checked + .td-toggle-slider {
    background-color: var(--td-orange-500);
}

.td-toggle-switch input:checked + .td-toggle-slider:before {
    transform: translateX(16px);
}

/* Hide Execution Info Mode */
body.hide-execution-info .persistent-info-bar,
body.hide-execution-info .execution-trace-container,
body.hide-execution-info .memory-layers-bar,
body.hide-execution-info .msg-metadata,
body.hide-execution-info .streaming-content,
body.hide-execution-info .streaming-window {
    display: none !important;
}

body.hide-execution-info .simple-processing-status {
    display: flex !important;
}

/* Simple processing status (shown when toggle is ON) */
.simple-processing-status {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 24px;
    background: var(--td-gray-50);
    border-radius: 12px;
    margin: 16px auto;
    max-width: 400px;
    color: var(--td-gray-600);
    font-size: 14px;
}

.simple-processing-status .spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--td-gray-300);
    border-top-color: var(--td-orange-500);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* User Avatar - Hidden (removed from UI) */
.td-avatar {
    display: none !important;
}

/* Status Bar - Bottom Position (Mockup) */
.td-status-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    background: var(--td-gray-50);
    border-top: 1px solid var(--td-gray-200);
    font-size: 12px;
    color: var(--td-gray-500);
}

.td-status-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.td-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--td-gray-400);
}

.td-status-dot.success { background: var(--td-success-500); }
.td-status-dot.warning { background: var(--td-warning-500); }
.td-status-dot.error { background: var(--td-error-500); }

/* Chat Input Area - Mockup Design */
/* Match chat container width (900px) and center alignment */
.td-chat-input-area {
    background: var(--td-white) !important;
    border: 2px solid rgba(255, 95, 2, 0.4) !important;
    border-radius: 16px !important;
    padding: 12px 16px !important;
    margin: 0 auto 16px auto !important;
    max-width: 900px !important;
    width: 100% !important;
    box-sizing: border-box !important;
    box-shadow: 0 2px 8px rgba(255, 95, 2, 0.1) !important;
}

/* Responsive input area */
@media (max-width: 1024px) {
    .td-chat-input-area {
        width: 100%;
        margin: 16px 0;
    }
}

@media (max-width: 768px) {
    .td-chat-input-area {
        width: 100%;
        margin: 12px 0;
        padding: 10px 12px;
    }
}

.td-chat-input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 12px;
}

.td-chat-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 14px;
    line-height: 1.5;
    resize: none;
    min-height: 24px;
    max-height: 150px;
    font-family: inherit;
    padding: 8px 0;
}

.td-chat-input::placeholder {
    color: var(--td-gray-400);
}

.td-chat-input-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

.td-btn-send {
    width: 40px;
    height: 40px;
    background: var(--td-orange-500);
    border: none;
    border-radius: 10px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.td-btn-send:hover {
    background: var(--td-orange-600);
    transform: scale(1.05);
}

/* Chat Container - Mockup Design */
.td-chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
    padding: 24px;
    overflow-y: auto;
}

.td-chat-messages {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding-bottom: 24px;
}

/* Sidebar */
.td-sidebar {
    position: fixed;
    top: var(--td-header-height);
    left: 0;
    bottom: 0;
    width: var(--td-sidebar-width);
    background: var(--td-navy-700);
    color: var(--td-white);
    overflow-y: auto;
    transition: width var(--td-duration-slow) var(--td-ease-default);
    z-index: var(--td-z-drawer);
}

.td-sidebar.collapsed {
    width: var(--td-sidebar-collapsed);
}

.td-sidebar-nav {
    padding: var(--td-space-2);
}

.td-sidebar-item {
    display: flex;
    align-items: center;
    gap: var(--td-space-3);
    padding: var(--td-space-3) var(--td-space-4);
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    border-radius: var(--td-radius-md);
    border-left: 3px solid transparent;
    transition: all var(--td-duration-fast);
    cursor: pointer;
}

.td-sidebar-item:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--td-white);
}

.td-sidebar-item.active {
    background: rgba(255, 95, 2, 0.15);
    color: var(--td-orange-400);
    border-left-color: var(--td-orange-500);
}

.td-sidebar-icon {
    flex-shrink: 0;
    width: 20px;
    text-align: center;
}

.td-sidebar-label {
    white-space: nowrap;
    overflow: hidden;
}

.td-sidebar.collapsed .td-sidebar-label {
    display: none;
}

/* Tabs */
.td-tabs {
    display: flex;
    gap: var(--td-space-1);
    border-bottom: 1px solid var(--td-border-light);
    padding: 0 var(--td-space-4);
}

.td-tab {
    padding: var(--td-space-3) var(--td-space-4);
    font-size: var(--td-text-sm);
    font-weight: var(--td-font-medium);
    color: var(--td-text-secondary);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: all var(--td-duration-fast);
}

.td-tab:hover {
    color: var(--td-text-primary);
}

.td-tab.active {
    color: var(--td-orange-500);
    border-bottom-color: var(--td-orange-500);
}

/* ============================================================================
   9. MODALS & PANELS
   ============================================================================ */

/* Modal Backdrop */
.td-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: var(--td-z-modal-backdrop);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--td-duration-normal), visibility var(--td-duration-normal);
}

.td-modal-backdrop.open {
    opacity: 1;
    visibility: visible;
}

/* Modal */
.td-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    background: var(--td-white);
    border-radius: var(--td-radius-xl);
    box-shadow: var(--td-shadow-2xl);
    z-index: var(--td-z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--td-duration-normal) var(--td-ease-out);
}

.td-modal.open {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.td-modal-lg {
    max-width: 800px;
}

.td-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--td-space-4);
    background: linear-gradient(135deg, var(--td-orange-500), var(--td-orange-600));
    color: var(--td-white);
    border-radius: var(--td-radius-xl) var(--td-radius-xl) 0 0;
}

.td-modal-title {
    font-size: var(--td-text-lg);
    font-weight: var(--td-font-semibold);
    margin: 0;
}

.td-modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: var(--td-radius-md);
    color: var(--td-white);
    cursor: pointer;
    transition: background var(--td-duration-fast);
}

.td-modal-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.td-modal-body {
    padding: var(--td-space-6);
    overflow-y: auto;
    max-height: calc(90vh - 140px);
}

.td-modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--td-space-2);
    padding: var(--td-space-4);
    border-top: 1px solid var(--td-border-light);
}

/* Slide Panel */
.td-panel-slide {
    position: fixed;
    top: var(--td-header-height);
    right: 0;
    bottom: 0;
    width: 400px;
    max-width: 100%;
    background: var(--td-white);
    box-shadow: var(--td-shadow-xl);
    transform: translateX(100%);
    z-index: var(--td-z-drawer);
    transition: transform var(--td-duration-slow) var(--td-ease-out);
}

.td-panel-slide.open {
    transform: translateX(0);
}

/* ============================================================================
   10. MESSAGES (CHAT) - Mockup Design
   ============================================================================ */

.td-message {
    display: flex;
    gap: 12px;
    max-width: 85%;
    margin-bottom: 24px;
}

.td-message-user {
    margin-left: auto;
    flex-direction: row-reverse;
}

.td-message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 14px;
    font-weight: 600;
}

.td-message-user .td-message-avatar {
    background: var(--td-blue-500);
    color: white;
}

.td-message-assistant .td-message-avatar {
    background: var(--td-orange-500);
    color: white;
}

.td-message-content {
    background: var(--td-white);
    border-radius: 16px;
    padding: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.td-message-user .td-message-content {
    background: var(--td-blue-500);
    color: white;
    border-bottom-right-radius: 4px;
}

.td-message-assistant .td-message-content {
    border-bottom-left-radius: 4px;
}

.td-message-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 12px;
}

.td-message-author {
    font-weight: 600;
    color: var(--td-gray-900);
}

.td-message-user .td-message-author {
    color: rgba(255,255,255,0.9);
}

.td-message-time {
    color: var(--td-gray-400);
}

.td-message-user .td-message-time {
    color: rgba(255,255,255,0.7);
}

.td-message-body {
    font-size: 14px;
    line-height: 1.6;
}

.td-message-bubble {
    padding: var(--td-space-3) var(--td-space-4);
    border-radius: var(--td-radius-lg);
    max-width: 100%;
}

.td-message-meta {
    display: flex;
    align-items: center;
    gap: var(--td-space-2);
    margin-top: var(--td-space-1);
    font-size: var(--td-text-xs);
    color: var(--td-text-tertiary);
}

/* Tool Badge */
.td-tool-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--td-space-1);
    padding: var(--td-space-1) var(--td-space-2);
    background: var(--td-blue-50);
    color: var(--td-blue-600);
    font-size: var(--td-text-xs);
    font-weight: var(--td-font-medium);
    border-radius: var(--td-radius-sm);
    margin-top: var(--td-space-2);
}

/* ============================================================================
   11. FEEDBACK COMPONENTS
   ============================================================================ */

/* Toast Notification */
.td-toast {
    position: fixed;
    top: var(--td-space-4);
    right: var(--td-space-4);
    display: flex;
    align-items: flex-start;
    gap: var(--td-space-3);
    padding: var(--td-space-4);
    min-width: 320px;
    max-width: 420px;
    background: var(--td-white);
    border-radius: var(--td-radius-lg);
    box-shadow: var(--td-shadow-lg);
    border-left: 4px solid var(--td-info-500);
    z-index: var(--td-z-notification);
    transform: translateX(120%);
    transition: transform var(--td-duration-slow) var(--td-ease-out);
}

.td-toast.show {
    transform: translateX(0);
}

.td-toast-success { border-left-color: var(--td-success-500); }
.td-toast-warning { border-left-color: var(--td-warning-500); }
.td-toast-error { border-left-color: var(--td-error-500); }

.td-toast-close {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--td-text-tertiary);
    cursor: pointer;
    padding: var(--td-space-1);
}

/* Badge */
.td-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--td-space-1);
    padding: var(--td-space-1) var(--td-space-2);
    font-size: var(--td-text-xs);
    font-weight: var(--td-font-medium);
    border-radius: var(--td-radius-full);
}

.td-badge-orange {
    background: var(--td-orange-100);
    color: var(--td-orange-700);
}

.td-badge-blue {
    background: var(--td-blue-100);
    color: var(--td-blue-700);
}

.td-badge-success {
    background: var(--td-success-100);
    color: var(--td-success-700);
}

.td-badge-warning {
    background: var(--td-warning-100);
    color: var(--td-warning-700);
}

.td-badge-error {
    background: var(--td-error-100);
    color: var(--td-error-700);
}

/* Status Dot */
.td-status-dot {
    width: 8px;
    height: 8px;
    border-radius: var(--td-radius-full);
    background: var(--td-gray-400);
}

.td-status-dot-success {
    background: var(--td-success-500);
    box-shadow: 0 0 0 3px var(--td-success-100);
}

.td-status-dot-warning {
    background: var(--td-warning-500);
    box-shadow: 0 0 0 3px var(--td-warning-100);
    animation: td-pulse 2s infinite;
}

.td-status-dot-error {
    background: var(--td-error-500);
    box-shadow: 0 0 0 3px var(--td-error-100);
}

/* Loading Spinner */
.td-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--td-gray-200);
    border-top-color: var(--td-blue-500);
    border-radius: var(--td-radius-full);
    animation: td-spin 0.8s linear infinite;
}

.td-spinner-orange {
    border-top-color: var(--td-orange-500);
}

.td-spinner-sm { width: 16px; height: 16px; border-width: 2px; }
.td-spinner-lg { width: 40px; height: 40px; border-width: 4px; }

/* Progress Bar */
.td-progress {
    height: 8px;
    background: var(--td-gray-200);
    border-radius: var(--td-radius-full);
    overflow: hidden;
}

.td-progress-bar {
    height: 100%;
    background: var(--td-blue-500);
    border-radius: var(--td-radius-full);
    transition: width var(--td-duration-slow);
}

.td-progress-bar-orange { background: var(--td-orange-500); }
.td-progress-bar-success { background: var(--td-success-500); }

/* ============================================================================
   12. UTILITIES
   ============================================================================ */

/* Display */
.td-hidden { display: none !important; }
.td-block { display: block; }
.td-inline { display: inline; }
.td-inline-block { display: inline-block; }

/* Visibility */
.td-visible { visibility: visible; }
.td-invisible { visibility: hidden; }

/* Text Alignment */
.td-text-left { text-align: left; }
.td-text-center { text-align: center; }
.td-text-right { text-align: right; }

/* Text Colors */
.td-text-primary { color: var(--td-text-primary); }
.td-text-secondary { color: var(--td-text-secondary); }
.td-text-muted { color: var(--td-text-tertiary); }
.td-text-orange { color: var(--td-orange-500); }
.td-text-blue { color: var(--td-blue-500); }
.td-text-success { color: var(--td-success-500); }
.td-text-warning { color: var(--td-warning-500); }
.td-text-error { color: var(--td-error-500); }

/* Background Colors */
.td-bg-white { background-color: var(--td-white); }
.td-bg-gray-50 { background-color: var(--td-gray-50); }
.td-bg-gray-100 { background-color: var(--td-gray-100); }
.td-bg-orange { background-color: var(--td-orange-500); }
.td-bg-blue { background-color: var(--td-blue-500); }
.td-bg-navy { background-color: var(--td-navy-700); }

/* Margin */
.td-m-0 { margin: 0; }
.td-m-1 { margin: var(--td-space-1); }
.td-m-2 { margin: var(--td-space-2); }
.td-m-4 { margin: var(--td-space-4); }
.td-mt-0 { margin-top: 0; }
.td-mt-2 { margin-top: var(--td-space-2); }
.td-mt-4 { margin-top: var(--td-space-4); }
.td-mb-0 { margin-bottom: 0; }
.td-mb-2 { margin-bottom: var(--td-space-2); }
.td-mb-4 { margin-bottom: var(--td-space-4); }

/* Padding */
.td-p-0 { padding: 0; }
.td-p-2 { padding: var(--td-space-2); }
.td-p-4 { padding: var(--td-space-4); }
.td-p-6 { padding: var(--td-space-6); }
.td-px-4 { padding-left: var(--td-space-4); padding-right: var(--td-space-4); }
.td-py-2 { padding-top: var(--td-space-2); padding-bottom: var(--td-space-2); }

/* Border */
.td-border { border: 1px solid var(--td-border-default); }
.td-border-t { border-top: 1px solid var(--td-border-default); }
.td-border-b { border-bottom: 1px solid var(--td-border-default); }
.td-rounded { border-radius: var(--td-radius-md); }
.td-rounded-lg { border-radius: var(--td-radius-lg); }
.td-rounded-full { border-radius: var(--td-radius-full); }

/* Width/Height */
.td-w-full { width: 100%; }
.td-h-full { height: 100%; }
.td-min-h-screen { min-height: 100vh; }

/* Overflow */
.td-overflow-hidden { overflow: hidden; }
.td-overflow-auto { overflow: auto; }
.td-overflow-y-auto { overflow-y: auto; }

/* Cursor */
.td-cursor-pointer { cursor: pointer; }
.td-cursor-not-allowed { cursor: not-allowed; }

/* Truncate */
.td-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* SR Only */
.td-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================================================
   13. ANIMATIONS
   ============================================================================ */

@keyframes td-spin {
    to { transform: rotate(360deg); }
}

@keyframes td-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes td-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes td-fade-out {
    from { opacity: 1; }
    to { opacity: 0; }
}

@keyframes td-slide-up {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes td-slide-down {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.td-animate-fade-in { animation: td-fade-in var(--td-duration-normal) var(--td-ease-out); }
.td-animate-slide-up { animation: td-slide-up var(--td-duration-normal) var(--td-ease-out); }
.td-animate-pulse { animation: td-pulse 2s var(--td-ease-in-out) infinite; }

/* ============================================================================
   14. DARK MODE
   ============================================================================ */

@media (prefers-color-scheme: dark) {
    :root {
        --td-bg-primary: var(--td-navy-700);
        --td-bg-secondary: var(--td-navy-600);
        --td-bg-tertiary: var(--td-navy-500);
        --td-text-primary: #e6edf3;
        --td-text-secondary: #8b949e;
        --td-text-tertiary: var(--td-gray-400);
        --td-border-light: var(--td-navy-500);
        --td-border-default: var(--td-navy-400);

        /* Override surface colors — Teradata Navy palette */
        --td-white: var(--td-navy-800);
        --td-gray-50: var(--td-navy-700);
        --td-gray-100: var(--td-navy-600);
        --td-gray-200: var(--td-navy-500);
        --td-gray-300: var(--td-navy-400);

        /* WCAG AA contrast tokens */
        --td-text-link: var(--td-blue-200);
        --td-text-interactive: var(--td-blue-200);
        --td-error-text: #FF5252;
        --td-text-accent: var(--td-orange-500);
    }
}

/* Manual dark mode class */
.td-dark {
    --td-bg-primary: var(--td-navy-700);
    --td-bg-secondary: var(--td-navy-600);
    --td-bg-tertiary: var(--td-navy-500);
    --td-text-primary: #e6edf3;
    --td-text-secondary: #8b949e;
    --td-text-tertiary: var(--td-gray-400);
    --td-border-light: var(--td-navy-500);
    --td-border-default: var(--td-navy-400);
    /* Override surface colors for dark mode — Teradata Navy palette */
    --td-white: var(--td-navy-800);       /* #011A2D — deepest surfaces */
    --td-gray-50: var(--td-navy-700);     /* #00233C — primary dark bg */
    --td-gray-100: var(--td-navy-600);    /* #082B47 — elevated surfaces */
    --td-gray-200: var(--td-navy-500);    /* #0A3352 — borders, dividers */
    --td-gray-300: var(--td-navy-400);    /* #265580 — subtle borders */
    --td-orange-50: rgba(255, 95, 2, 0.08);

    /* WCAG AA contrast tokens for dark mode */
    --td-text-link: var(--td-blue-200);           /* #BBC7FB — links on navy (9.71:1) */
    --td-text-interactive: var(--td-blue-200);     /* interactive text on navy */
    --td-error-text: #FF5252;                      /* error text on navy (5.27:1) */
    --td-text-accent: var(--td-orange-500);        /* orange on navy (4.76:1) */
}

.td-dark .td-card,
.td-dark .td-modal,
.td-dark .td-message-assistant .td-message-bubble {
    background: var(--td-navy-600);
    border-color: var(--td-navy-500);
}

.td-dark .td-input,
.td-dark .td-select,
.td-dark .td-textarea {
    background: var(--td-navy-600);
    border-color: var(--td-navy-400);
    color: var(--td-white);
}

/* ========================================
   COMPREHENSIVE DARK MODE STYLES
   ======================================== */

/* Body and main background */
.td-dark {
    background-color: var(--td-navy-900) !important;
    color: #e6edf3 !important;
}

/* Header */
.td-dark .td-header {
    background: linear-gradient(135deg, var(--td-navy-800) 0%, var(--td-navy-900) 100%) !important;
    border-bottom-color: var(--td-navy-600) !important;
}

.td-dark .td-logo-image {
    filter: brightness(1.1);
}

.td-dark .td-search-box {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}

.td-dark .td-search-input {
    background: transparent !important;
    color: #e6edf3 !important;
}

.td-dark .td-search-input::placeholder {
    color: #8b949e !important;
}

.td-dark .td-btn-icon {
    color: #e6edf3 !important;
}

.td-dark .td-btn-icon:hover {
    background: rgba(255, 255, 255, 0.1) !important;
}

/* Sidebar / Navigation */
.td-dark .td-sidebar,
.td-dark .td-nav-sidebar {
    background: var(--td-navy-800) !important;
    border-color: var(--td-navy-600) !important;
}

.td-dark .td-nav-menu {
    background: var(--td-navy-800) !important;
}

.td-dark .td-nav-item,
.td-dark .td-nav-subitem {
    color: #e6edf3 !important;
}

.td-dark .td-nav-item:hover,
.td-dark .td-nav-subitem:hover {
    background: rgba(255, 95, 2, 0.1) !important;
}

.td-dark .td-nav-item.active {
    background: var(--td-orange-500) !important;
    color: white !important;
}

.td-dark .td-nav-item.td-nav-highlight,
.td-dark .td-nav-subitem.td-nav-highlight {
    background: rgba(255, 95, 2, 0.15) !important;
    color: var(--td-orange-400, #FF934D) !important;
}
.td-dark .td-nav-item.td-nav-highlight:hover,
.td-dark .td-nav-subitem.td-nav-highlight:hover {
    background: rgba(255, 95, 2, 0.25) !important;
}

.td-dark .td-sidebar-session-item {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}

.td-dark .td-sidebar-session-item:hover {
    background: var(--td-navy-600) !important;
}

.td-dark .td-sidebar-session-item.active {
    background: rgba(255, 95, 2, 0.2) !important;
    border-color: var(--td-orange-500) !important;
}

.td-dark .td-sidebar-session-title {
    color: #e6edf3 !important;
}

.td-dark .td-sidebar-session-preview,
.td-dark .td-sidebar-session-time {
    color: #8b949e !important;
}

/* Session History Panel - Dark Mode */
.td-dark .session-history-panel {
    background: var(--td-navy-800) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .sh-search,
.td-dark .sh-select {
    background: var(--td-navy-900) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}
.td-dark .sh-session-item {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}
.td-dark .sh-session-item:hover {
    background: rgba(255, 95, 2, 0.1) !important;
    border-color: var(--td-orange-500, #FF5F02) !important;
}
.td-dark .sh-session-preview {
    color: #8b949e !important;
}
.td-dark .sh-summary-stat {
    background: rgba(255, 95, 2, 0.08) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .sh-summary-stat .stat-label {
    color: #8b949e !important;
}
.td-dark .sh-message.user {
    background: rgba(48, 84, 243, 0.15) !important;
    border-color: rgba(48, 84, 243, 0.3) !important;
}
.td-dark .sh-message.assistant {
    background: rgba(255, 95, 2, 0.1) !important;
    border-color: rgba(255, 95, 2, 0.3) !important;
}
.td-dark .sh-message-content {
    color: #e6edf3 !important;
}
.td-dark .sh-status-bar {
    background: var(--td-navy-900) !important;
    border-color: var(--td-navy-600) !important;
    color: #8b949e !important;
}
.td-dark .sh-detail-header {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .sh-session-stats {
    background: var(--td-navy-700) !important;
}
.td-dark .sh-messages-header {
    border-color: var(--td-navy-600) !important;
    color: #8b949e !important;
}
.td-dark .sh-loading,
.td-dark .sh-empty {
    color: #8b949e !important;
}
.td-dark .sh-session-meta {
    color: #8b949e !important;
}
.td-dark .sh-session-time {
    color: #8b949e !important;
}
.td-dark .sh-bulk-actions {
    border-color: var(--td-navy-600) !important;
}

/* Settings Panel - Dark Mode */
.td-dark .settings-container {
    background: var(--td-navy-800) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .settings-tabs {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .settings-tab {
    color: #8b949e !important;
}
.td-dark .settings-tab:hover {
    color: #e6edf3 !important;
}
.td-dark .settings-tab.active {
    color: var(--td-orange-500, #FF5F02) !important;
}
.td-dark .settings-content {
    background: var(--td-navy-800) !important;
}
.td-dark .settings-content::-webkit-scrollbar-track {
    background: var(--td-navy-800) !important;
}
.td-dark .settings-content::-webkit-scrollbar-thumb {
    background: var(--td-navy-600) !important;
}
.td-dark .settings-group {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .settings-group-title {
    color: var(--td-orange-400, #FF934D) !important;
}
.td-dark .settings-label {
    color: #e6edf3 !important;
}
.td-dark .settings-input,
.td-dark .settings-select,
.td-dark .settings-textarea {
    background: var(--td-navy-900) !important;
    color: #e6edf3 !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .settings-actions {
    background: var(--td-navy-900) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .settings-terminal {
    background: var(--td-navy-900) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}

/* Inline Settings Sections - Dark Mode */
.td-dark .settings-section {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .settings-section h4 {
    color: var(--td-orange-400, #FF934D) !important;
}
.td-dark .settings-section label,
.td-dark .settings-section p {
    color: #e6edf3 !important;
}
.td-dark .settings-section small {
    color: #8b949e !important;
}
.td-dark .settings-section select,
.td-dark .settings-section input[type="text"],
.td-dark .settings-section input[type="number"],
.td-dark .settings-section input[type="password"] {
    background: var(--td-navy-900) !important;
    color: #e6edf3 !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .settings-section select option {
    background: var(--td-navy-900) !important;
    color: #e6edf3 !important;
}
.td-dark .settings-section table {
    color: #e6edf3 !important;
}
.td-dark .settings-section table th {
    color: var(--td-orange-400, #FF934D) !important;
}
.td-dark .sub-tabs {
    background: var(--td-navy-700) !important;
}
.td-dark .sub-tab {
    background: var(--td-navy-800) !important;
    border-color: var(--td-navy-600) !important;
    color: #8b949e !important;
}
.td-dark .sub-tab:hover {
    background: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}
.td-dark .sub-tab.active {
    background: var(--td-orange-500, #FF5F02) !important;
    color: white !important;
    border-color: var(--td-orange-500, #FF5F02) !important;
}
.td-dark .settings-toggle .toggle-label {
    color: #e6edf3 !important;
}
.td-dark .platform-status-card {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .info-box {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .info-box div {
    color: #e6edf3 !important;
}
.td-dark .agent-card {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .agent-card h5 {
    color: #e6edf3 !important;
}

/* Agent Edit Modal - Dark Mode */
.td-dark #agentEditModal .modal-content {
    background: var(--td-navy-800) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark #agentEditModal label {
    color: #e6edf3 !important;
}
.td-dark #agentEditModal input,
.td-dark #agentEditModal select,
.td-dark #agentEditModal textarea {
    background: var(--td-navy-900) !important;
    color: #e6edf3 !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark #agentEditModal small {
    color: #8b949e !important;
}
.td-dark #agentEditModal p {
    color: #8b949e !important;
}
.td-dark #agentEditModal h4 {
    color: var(--td-orange-400, #FF934D) !important;
}
.td-dark #agentEditModal code {
    background: var(--td-navy-700) !important;
    color: #e6edf3 !important;
}

/* Main content area */
.td-dark .td-main,
.td-dark .td-content,
.td-dark #chat {
    background: var(--td-navy-900) !important;
}

/* Chat messages */
.td-dark .td-message-user .td-message-bubble {
    background: linear-gradient(135deg, #F37021 0%, #e05a10 100%) !important;
    color: white !important;
}

.td-dark .td-message-assistant .td-message-bubble,
.td-dark .message-bubble.assistant {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}

/* Fix assistant message content in dark mode */
.td-dark .td-message-assistant .td-message-content,
.td-dark .td-message-assistant .msg-content {
    background: var(--td-navy-700) !important;
    color: #e6edf3 !important;
    border: 1px solid var(--td-navy-600) !important;
    border-radius: 12px !important;
}

.td-dark .td-message-assistant .td-message-author {
    color: #e6edf3 !important;
}

.td-dark .td-message-assistant .td-message-body,
.td-dark .td-message-assistant .td-message-body p,
.td-dark .td-message-assistant .td-message-body span,
.td-dark .td-message-assistant .td-message-body li,
.td-dark .td-message-assistant .td-message-body strong {
    color: #e6edf3 !important;
}

.td-dark .td-message-assistant .td-message-time {
    color: #8b949e !important;
}

.td-dark .message-bubble.user {
    background: linear-gradient(135deg, #F37021 0%, #e05a10 100%) !important;
}

/* Input area */
.td-dark .td-input-container,
.td-dark .chat-input-container {
    background: var(--td-navy-800) !important;
    border-color: var(--td-navy-600) !important;
}

.td-dark .td-chat-input-area {
    background: var(--td-navy-800) !important;
    border: 2px solid rgba(255, 95, 2, 0.5) !important;
    box-shadow: 0 2px 8px rgba(255, 95, 2, 0.15) !important;
}

.td-dark .td-chat-input,
.td-dark #input,
.td-dark textarea#input {
    background: transparent !important;
    color: #e6edf3 !important;
}

.td-dark .td-chat-input::placeholder,
.td-dark #input::placeholder,
.td-dark textarea#input::placeholder {
    color: #6e7681 !important;
}

.td-dark .td-input-area,
.td-dark .chat-input,
.td-dark #userInput {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}

.td-dark .td-input-area:focus,
.td-dark .chat-input:focus,
.td-dark #userInput:focus {
    border-color: var(--td-orange-500) !important;
}

/* Buttons */
.td-dark .td-btn {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}

.td-dark .td-btn:hover {
    background: var(--td-navy-600) !important;
}

.td-dark .td-btn-primary {
    background: var(--td-orange-500) !important;
    border-color: var(--td-orange-500) !important;
    color: white !important;
}

/* Modals and panels */
.td-dark .td-modal,
.td-dark .td-panel,
.td-dark .settings-modal,
.td-dark .modal-content {
    background: var(--td-navy-800) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}

.td-dark .td-modal-header,
.td-dark .modal-header {
    background: var(--td-navy-700) !important;
    border-bottom-color: var(--td-navy-600) !important;
}

/* Cards */
.td-dark .td-card {
    background: var(--td-navy-800) !important;
    border-color: var(--td-navy-600) !important;
}

/* Tables */
.td-dark table,
.td-dark .td-table {
    background: var(--td-navy-800) !important;
    color: #e6edf3 !important;
}

.td-dark th {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}

.td-dark td {
    border-color: var(--td-navy-600) !important;
}

.td-dark tr:hover {
    background: rgba(255, 255, 255, 0.05) !important;
}

/* Code blocks */
.td-dark pre,
.td-dark code {
    background: var(--td-navy-800) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}

/* Scrollbars in dark mode */
.td-dark ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.td-dark ::-webkit-scrollbar-track {
    background: var(--td-navy-700);
}

.td-dark ::-webkit-scrollbar-thumb {
    background: var(--td-navy-500);
    border-radius: 4px;
}

.td-dark ::-webkit-scrollbar-thumb:hover {
    background: #6e7681;
}

/* Execution console */
.td-dark .execution-console,
.td-dark .live-execution-console {
    background: var(--td-navy-800) !important;
    border-color: var(--td-navy-600) !important;
}

.td-dark .console-header {
    background: var(--td-navy-700) !important;
}

.td-dark .console-output {
    background: var(--td-navy-900) !important;
    color: #8b949e !important;
}

/* Status indicators */
.td-dark .status-indicator {
    background: var(--td-navy-700) !important;
}

/* Tool categories */
.td-dark .tool-category {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}

.td-dark .tool-category:hover {
    background: var(--td-navy-600) !important;
}

/* Badge counts */
.td-dark .td-badge,
.td-dark .tool-count {
    background: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}

/* Section headers */
.td-dark .section-header,
.td-dark .td-section-title {
    color: #8b949e !important;
}

/* Links — WCAG AA compliant on navy backgrounds */
.td-dark a {
    color: var(--td-blue-200, #BBC7FB) !important;
}

.td-dark a:hover {
    color: var(--td-blue-100, #DDE3FD) !important;
}

/* Form elements */
.td-dark select,
.td-dark input[type="text"],
.td-dark input[type="password"],
.td-dark input[type="email"],
.td-dark input[type="number"],
.td-dark textarea {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}

.td-dark select option {
    background: var(--td-navy-700) !important;
    color: #e6edf3 !important;
}

/* Tabs — Memory Inspector panel tabs (phase6-ui.css .panel-tabs .tab) */
.td-dark .tab {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
    color: #8b949e !important;
}

/* Settings Modal nav tabs — transparent so they contrast with the tab strip */
.td-dark .settings-tab {
    background: transparent !important;
    color: #8b949e !important;
}

.td-dark .tab.active,
.td-dark .settings-tab.active {
    background: var(--td-orange-500) !important;
    color: white !important;
}

/* Tooltips */
.td-dark .tooltip,
.td-dark [data-tooltip]::after {
    background: var(--td-navy-700) !important;
    color: #e6edf3 !important;
    border-color: var(--td-navy-600) !important;
}

/* Dropdown menus */
.td-dark .dropdown-menu,
.td-dark .td-dropdown {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}

.td-dark .dropdown-item:hover {
    background: var(--td-navy-600) !important;
}

/* Footer / Status bar */
.td-dark .td-footer,
.td-dark .status-bar {
    background: var(--td-navy-800) !important;
    border-top-color: var(--td-navy-600) !important;
    color: #8b949e !important;
}

/* Services Modal - Dark Mode */
.td-dark .modal-content {
    background: var(--td-navy-800) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}
.td-dark .modal-header h2 {
    color: #e6edf3 !important;
}
.td-dark .modal-close,
.td-dark .modal-maximize {
    color: #8b949e !important;
}
.td-dark .modal-close:hover,
.td-dark .modal-maximize:hover {
    color: #e6edf3 !important;
}

/* Services Tabs - Dark Mode */
.td-dark .services-tabs {
    border-bottom-color: var(--td-navy-600) !important;
}
.td-dark .services-tab {
    background: var(--td-navy-700) !important;
    color: #8b949e !important;
}
.td-dark .services-tab:hover {
    background: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}
.td-dark .services-tab.active {
    background: var(--td-orange-500, #FF5F02) !important;
    color: white !important;
}

/* Service Sections - Dark Mode */
.td-dark .service-section {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .service-section-title {
    color: var(--td-orange-400, #FF934D) !important;
}

/* Form Elements in Services - Dark Mode */
.td-dark .form-group label {
    color: #e6edf3 !important;
}
.td-dark .form-group input,
.td-dark .form-group select,
.td-dark .form-group textarea {
    background: var(--td-navy-900) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}
.td-dark .form-group input:focus,
.td-dark .form-group select:focus,
.td-dark .form-group textarea:focus {
    border-color: var(--td-orange-500, #FF5F02) !important;
    box-shadow: 0 0 0 3px rgba(255, 95, 2, 0.2) !important;
}
.td-dark .form-group small {
    color: #8b949e !important;
}

/* Buttons in Dark Mode */
.td-dark .btn-secondary {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}
.td-dark .btn-secondary:hover {
    background: var(--td-navy-600) !important;
}
.td-dark .btn-toggle {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
    color: #8b949e !important;
}
.td-dark .btn-toggle.active {
    background: rgba(255, 95, 2, 0.15) !important;
    border-color: var(--td-orange-500, #FF5F02) !important;
    color: var(--td-orange-400, #FF934D) !important;
}

/* NIM Model Cards - Dark Mode */
.td-dark .nim-model-card {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .nim-model-card:hover {
    border-color: var(--td-orange-500, #FF5F02) !important;
}
.td-dark .nim-model-card .model-name {
    color: #e6edf3 !important;
}
.td-dark .nim-model-card .model-details {
    color: #8b949e !important;
}
.td-dark .nim-model-card .test-btn {
    background: var(--td-navy-900) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}
.td-dark .nim-model-card .detail-value code {
    background: var(--td-navy-900) !important;
    color: #e6edf3 !important;
}
.td-dark .nim-model-item {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .nim-model-item:hover {
    border-color: var(--td-orange-500, #FF5F02) !important;
    background: rgba(255, 95, 2, 0.08) !important;
}

/* JWT Flow - Dark Mode */
.td-dark .jwt-flow-btn {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .jwt-flow-btn:hover,
.td-dark .jwt-flow-btn.active {
    border-color: var(--td-orange-500, #FF5F02) !important;
    background: rgba(255, 95, 2, 0.08) !important;
}
.td-dark .jwt-flow-btn .flow-name {
    color: #e6edf3 !important;
}
.td-dark .jwt-flow-btn .flow-desc {
    color: #8b949e !important;
}
.td-dark .device-flow-info {
    background: rgba(255, 95, 2, 0.08) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .token-display {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .token-display .token-value {
    background: var(--td-navy-900) !important;
    color: #e6edf3 !important;
}

/* VS Subtabs - Dark Mode */
.td-dark .vs-subtabs {
    border-bottom-color: var(--td-navy-600) !important;
}
.td-dark .vs-subtab {
    color: #8b949e !important;
}
.td-dark .vs-subtab:hover {
    color: var(--td-orange-400, #FF934D) !important;
    background: rgba(255, 95, 2, 0.05) !important;
}
.td-dark .vs-subtab.active {
    color: var(--td-orange-400, #FF934D) !important;
    border-bottom-color: var(--td-orange-500, #FF5F02) !important;
    background: rgba(255, 95, 2, 0.1) !important;
}

/* VS Upload & Jobs - Dark Mode */
.td-dark .vs-upload-area {
    border-color: var(--td-navy-600) !important;
}
.td-dark .vs-upload-area:hover {
    border-color: var(--td-orange-500, #FF5F02) !important;
    background: rgba(255, 95, 2, 0.05) !important;
}
.td-dark .vs-upload-area .upload-text {
    color: #8b949e !important;
}
.td-dark .vs-job-card {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .vs-job-name {
    color: #e6edf3 !important;
}
.td-dark .vs-job-message {
    color: #8b949e !important;
}
.td-dark .vs-progress-bar {
    background: var(--td-navy-600) !important;
}
.td-dark .vs-store-item {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .vs-store-name {
    color: #e6edf3 !important;
}
.td-dark .vs-store-btn {
    background: var(--td-navy-900) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}
.td-dark .vs-form-section {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .vs-form-section-title {
    color: #e6edf3 !important;
}
.td-dark .vs-store-detail {
    color: #8b949e !important;
}
.td-dark .vs-uploaded-files {
    background: var(--td-navy-900) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .vs-uploaded-file {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .vs-uploaded-file-name {
    color: #e6edf3 !important;
}
.td-dark .vs-uploaded-file-size {
    color: #8b949e !important;
}

/* OCR Styles - Dark Mode */
.td-dark .ocr-step {
    background: var(--td-navy-700) !important;
}
.td-dark .ocr-step-title {
    color: #e6edf3 !important;
}
.td-dark .ocr-file-input {
    border-color: var(--td-navy-600) !important;
    color: #8b949e !important;
}
.td-dark .ocr-file-input:hover {
    border-color: var(--td-orange-500, #FF5F02) !important;
    background: rgba(255, 95, 2, 0.05) !important;
}
.td-dark .ocr-file-preview {
    background: var(--td-navy-900) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}
.td-dark .ocr-text-output {
    background: var(--td-navy-900) !important;
    border-color: var(--td-navy-600) !important;
    color: #e6edf3 !important;
}
.td-dark .ocr-table th,
.td-dark .ocr-table td {
    border-color: var(--td-navy-600) !important;
}
.td-dark .ocr-table th {
    background: var(--td-navy-700) !important;
    color: #e6edf3 !important;
}
.td-dark .ocr-table tr:hover {
    background: rgba(255, 95, 2, 0.05) !important;
}
.td-dark .ocr-section-title {
    color: #e6edf3 !important;
}

/* Structured Output - Dark Mode */
.td-dark .structured-output {
    background: var(--td-navy-800) !important;
    border-color: var(--td-navy-600) !important;
}
.td-dark .structured-section {
    border-bottom-color: var(--td-navy-600) !important;
}
.td-dark .structured-section h4 {
    color: #e6edf3 !important;
}
.td-dark .field-item {
    background: var(--td-navy-700) !important;
}
.td-dark .field-label {
    color: #8b949e !important;
}
.td-dark .field-value {
    color: #e6edf3 !important;
}
.td-dark .structured-table th {
    background: var(--td-navy-700) !important;
    border-bottom-color: var(--td-navy-600) !important;
    color: #8b949e !important;
}
.td-dark .structured-table td {
    border-bottom-color: var(--td-navy-700) !important;
    color: #e6edf3 !important;
}
.td-dark .structured-table tr:hover td {
    background: rgba(255, 95, 2, 0.05) !important;
}

/* View Tabs - Dark Mode */
.td-dark .view-tab {
    background: var(--td-navy-700) !important;
    border-color: var(--td-navy-600) !important;
    color: #8b949e !important;
}
.td-dark .view-tab.active {
    background: var(--td-navy-800) !important;
    border-bottom-color: var(--td-navy-800) !important;
    color: var(--td-orange-400, #FF934D) !important;
}

/* Accuracy & Progress Bars - Dark Mode */
.td-dark .accuracy-bar,
.td-dark .accuracy-bar-container,
.td-dark .vs-progress-bar,
.td-dark .test-progress-bar {
    background: var(--td-navy-600) !important;
}

/* MCP Module Status - Dark Mode */
.td-dark .mcp-module-status.disabled {
    background: var(--td-navy-600) !important;
    color: #8b949e !important;
}

/* ============================================================================
   15. RESPONSIVE BREAKPOINTS & ADAPTIVE LAYOUT
   ============================================================================ */

/*
 * Breakpoint System (Mobile-First):
 * XS:  320px  - Small phones (iPhone SE)
 * SM:  480px  - Large phones (iPhone 14 Pro Max)
 * MD:  640px  - Phablets, small tablets
 * LG:  768px  - Tablets (iPad Mini)
 * XL:  1024px - Large tablets, laptops
 * 2XL: 1280px - Desktops
 * 3XL: 1536px - Large desktops
 * 4XL: 1920px - Full HD monitors
 * 5XL: 2560px - Ultra-wide / 4K
 */

/* ========================================
   15.1 TOUCH-FRIENDLY BASE STYLES
   ======================================== */

/* Prevent iOS text zoom on input focus */
input, select, textarea {
    font-size: 16px !important; /* Prevents iOS zoom */
}

/* Smooth scrolling for iOS */
.td-scrollable {
    -webkit-overflow-scrolling: touch;
    overflow-y: auto;
}

/* Disable tap highlight on mobile */
* {
    -webkit-tap-highlight-color: transparent;
}

/* Touch target minimum size */
.td-touch-target {
    min-width: 44px;
    min-height: 44px;
}

/* Safe area padding for notched devices */
.td-safe-top {
    padding-top: env(safe-area-inset-top, 0);
}

.td-safe-bottom {
    padding-bottom: env(safe-area-inset-bottom, 0);
}

.td-safe-left {
    padding-left: env(safe-area-inset-left, 0);
}

.td-safe-right {
    padding-right: env(safe-area-inset-right, 0);
}

/* Prevent overscroll bounce */
.td-no-overscroll {
    overscroll-behavior: none;
}

/* ========================================
   15.2 XS BREAKPOINT: 0-479px (Small Phones)
   ======================================== */

@media (max-width: 479px) {
    :root {
        --td-header-height: 48px;
        --td-sidebar-width: 100%;
        --td-input-height: 48px;
    }

    /* Hide on XS */
    .td-hide-xs { display: none !important; }

    /* Header compact */
    .td-header {
        height: 48px;
        padding: 0 var(--td-space-3);
    }

    .td-header-logo span {
        display: none;
    }

    .td-header-search {
        display: none;
    }

    /* Sidebar - full screen overlay */
    .td-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        transform: translateX(-100%);
        z-index: var(--td-z-modal);
    }

    .td-sidebar.open {
        transform: translateX(0);
    }

    /* Modal - fullscreen */
    .td-modal {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        max-width: 100%;
        max-height: 100%;
        border-radius: 0;
        transform: none;
    }

    .td-modal.open {
        transform: none;
    }

    .td-modal-header {
        border-radius: 0;
    }

    .td-modal-body {
        max-height: calc(100vh - 120px);
        max-height: calc(100dvh - 120px); /* Dynamic viewport height */
    }

    /* Slide panel - full width */
    .td-panel-slide {
        width: 100%;
        top: 0;
    }

    /* Messages - full width */
    .td-message-bubble {
        max-width: 100%;
    }

    /* Form - stacked */
    .td-form-row {
        flex-direction: column;
    }

    /* Button - full width option */
    .td-btn-fullwidth-xs {
        width: 100%;
    }

    /* Grid - single column */
    .td-grid {
        grid-template-columns: 1fr !important;
    }

    /* Toast - full width */
    .td-toast {
        left: var(--td-space-3);
        right: var(--td-space-3);
        min-width: auto;
        max-width: none;
    }

    /* Typography - slightly smaller */
    .td-h1 { font-size: 1.5rem; }
    .td-h2 { font-size: 1.25rem; }
    .td-h3 { font-size: 1.125rem; }

    /* Tabs - scrollable horizontal */
    .td-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .td-tabs::-webkit-scrollbar {
        display: none;
    }

    .td-tab {
        flex-shrink: 0;
        white-space: nowrap;
    }
}

/* ========================================
   15.3 SM BREAKPOINT: 480-639px (Large Phones)
   ======================================== */

@media (min-width: 480px) and (max-width: 639px) {
    :root {
        --td-header-height: 52px;
    }

    .td-hide-sm { display: none !important; }

    /* Modal - still fullscreen but with slight padding */
    .td-modal {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        max-width: 100%;
        border-radius: 0;
        transform: none;
    }

    /* Slightly larger touch targets visible */
    .td-header-search {
        display: flex;
        max-width: 180px;
    }

    /* Messages - still full but with breathing room */
    .td-message-bubble {
        max-width: 95%;
    }

    /* Grid - single column */
    .td-grid {
        grid-template-columns: 1fr !important;
    }
}

/* ========================================
   15.4 MD BREAKPOINT: 640-767px (Small Tablets)
   ======================================== */

@media (min-width: 640px) and (max-width: 767px) {
    :root {
        --td-header-height: 56px;
        --td-sidebar-width: 80%;
    }

    .td-hide-md { display: none !important; }

    /* Sidebar - slide over 80% */
    .td-sidebar {
        width: 80%;
        max-width: 320px;
    }

    /* Modal - centered with fluid width */
    .td-modal {
        width: min(90vw, 560px);
        max-width: 90vw;
        max-height: 90vh;
        border-radius: var(--td-radius-xl);
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%) scale(0.95);
    }

    .td-modal.open {
        transform: translate(-50%, -50%) scale(1);
    }

    .td-modal-header {
        border-radius: var(--td-radius-xl) var(--td-radius-xl) 0 0;
    }

    /* Slide panel - 80% width */
    .td-panel-slide {
        width: 80%;
        max-width: 400px;
    }

    /* Messages - 90% width */
    .td-message-bubble {
        max-width: 90%;
    }

    /* Grid - 2 columns possible */
    .td-grid-cols-2-md {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================================
   15.5 LG BREAKPOINT: 768-1023px (Tablets)
   ======================================== */

@media (min-width: 768px) and (max-width: 1023px) {
    :root {
        --td-header-height: 56px;
        --td-sidebar-width: 60px;
        --td-sidebar-expanded: 240px;
    }

    .td-hide-lg { display: none !important; }

    /* Sidebar - collapsed by default */
    .td-sidebar {
        width: var(--td-sidebar-width);
        transform: translateX(0);
    }

    .td-sidebar-label {
        display: none;
    }

    .td-sidebar.expanded {
        width: var(--td-sidebar-expanded);
    }

    .td-sidebar.expanded .td-sidebar-label {
        display: inline;
    }

    /* Modal - 80% width */
    .td-modal {
        width: min(85vw, 640px);
    }

    /* Slide panel - fixed width */
    .td-panel-slide {
        width: 360px;
    }

    /* Messages - 85% width */
    .td-message-bubble {
        max-width: 85%;
    }

    /* Grid - 2-3 columns */
    .td-grid-cols-2 {
        grid-template-columns: repeat(2, 1fr);
    }

    .td-grid-cols-3-lg {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Bottom nav hidden on tablet+ */
    .td-bottom-nav {
        display: none;
    }
}

/* ========================================
   15.6 XL BREAKPOINT: 1024-1279px (Laptops)
   ======================================== */

@media (min-width: 1024px) and (max-width: 1279px) {
    :root {
        --td-header-height: 64px;
        --td-sidebar-width: 240px;
    }

    .td-hide-xl { display: none !important; }

    /* Sidebar - expanded */
    .td-sidebar {
        width: var(--td-sidebar-width);
    }

    /* Modal - standard desktop size */
    .td-modal {
        width: min(80vw, 640px);
    }

    .td-modal-lg {
        width: min(85vw, 900px);
    }

    /* Messages - 80% width */
    .td-message-bubble {
        max-width: 80%;
    }

    /* Grid - 3 columns */
    .td-grid-cols-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ========================================
   15.7 2XL BREAKPOINT: 1280-1535px (Desktops)
   ======================================== */

@media (min-width: 1280px) and (max-width: 1535px) {
    :root {
        --td-sidebar-width: 280px;
    }

    .td-hide-2xl { display: none !important; }

    /* Modal - fixed width */
    .td-modal {
        width: 640px;
    }

    .td-modal-lg {
        width: 900px;
    }

    /* Messages - 75% width */
    .td-message-bubble {
        max-width: 75%;
    }

    /* Grid - up to 4 columns */
    .td-grid-cols-4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ========================================
   15.8 3XL BREAKPOINT: 1536-1919px (Large Desktops)
   ======================================== */

@media (min-width: 1536px) and (max-width: 1919px) {
    :root {
        --td-sidebar-width: 300px;
    }

    .td-hide-3xl { display: none !important; }

    /* Enable right context panel */
    .td-right-panel {
        display: block;
        width: 280px;
    }

    /* Messages - constrained for readability */
    .td-message-bubble {
        max-width: 70%;
    }

    /* Container max-width */
    .td-container {
        max-width: 1400px;
    }
}

/* ========================================
   15.9 4XL+ BREAKPOINT: 1920px+ (Ultra-wide)
   ======================================== */

@media (min-width: 1920px) {
    :root {
        --td-sidebar-width: 320px;
    }

    .td-hide-4xl { display: none !important; }

    /* Enable analytics panel on ultra-wide */
    .td-analytics-panel {
        display: block;
        width: 320px;
    }

    /* Messages - max width for readability */
    .td-message-bubble {
        max-width: 65%;
        max-width: min(65%, 800px);
    }

    /* Chat area centered with max width */
    .td-chat-container {
        max-width: 1000px;
        margin: 0 auto;
    }

    /* Chat input matches chat container width */
    .td-chat-input-area {
        max-width: 1000px !important;
    }

    /* Container max-width */
    .td-container {
        max-width: 1600px;
    }
}

/* 5XL: 2560px+ - Special ultra-wide layout */
@media (min-width: 2560px) {
    .td-hide-5xl { display: none !important; }

    /* Three column layout possible */
    .td-layout-3col {
        display: grid;
        grid-template-columns: var(--td-sidebar-width) 1fr 320px;
    }
}

/* ========================================
   15.10 BOTTOM NAVIGATION (Mobile Only)
   ======================================== */

.td-bottom-nav {
    display: none; /* Hidden by default */
}

@media (max-width: 767px) {
    .td-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 56px;
        background: var(--td-white);
        border-top: 1px solid var(--td-border-light);
        z-index: var(--td-z-sticky);
        padding-bottom: env(safe-area-inset-bottom, 0);
    }

    .td-bottom-nav-item {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--td-space-1);
        padding: var(--td-space-2);
        color: var(--td-text-tertiary);
        text-decoration: none;
        font-size: var(--td-text-xs);
        transition: color var(--td-duration-fast);
    }

    .td-bottom-nav-item.active {
        color: var(--td-orange-500);
    }

    .td-bottom-nav-item:active {
        background: var(--td-gray-50);
    }

    .td-bottom-nav-icon {
        font-size: 20px;
    }

    /* Add padding to main content for bottom nav */
    .td-main-content {
        padding-bottom: calc(56px + env(safe-area-inset-bottom, 0));
    }
}

/* ========================================
   15.11 RESPONSIVE VISIBILITY UTILITIES
   ======================================== */

/* Show only at specific breakpoints */
.td-show-xs-only { display: none; }
.td-show-sm-only { display: none; }
.td-show-md-only { display: none; }
.td-show-lg-only { display: none; }
.td-show-xl-only { display: none; }
.td-show-mobile { display: none; }    /* xs + sm */
.td-show-tablet { display: none; }    /* md + lg */
.td-show-desktop { display: none; }   /* xl+ */

@media (max-width: 479px) {
    .td-show-xs-only { display: block; }
    .td-show-mobile { display: block; }
}

@media (min-width: 480px) and (max-width: 639px) {
    .td-show-sm-only { display: block; }
    .td-show-mobile { display: block; }
}

@media (min-width: 640px) and (max-width: 767px) {
    .td-show-md-only { display: block; }
    .td-show-tablet { display: block; }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .td-show-lg-only { display: block; }
    .td-show-tablet { display: block; }
}

@media (min-width: 1024px) and (max-width: 1279px) {
    .td-show-xl-only { display: block; }
    .td-show-desktop { display: block; }
}

@media (min-width: 1280px) {
    .td-show-desktop { display: block; }
}

/* Hide on mobile (xs + sm) */
@media (max-width: 639px) {
    .td-hide-mobile { display: none !important; }
}

/* Hide on tablet (md + lg) */
@media (min-width: 640px) and (max-width: 1023px) {
    .td-hide-tablet { display: none !important; }
}

/* Hide on desktop (xl+) */
@media (min-width: 1024px) {
    .td-hide-desktop { display: none !important; }
}

/* ========================================
   15.12 RESPONSIVE SPACING UTILITIES
   ======================================== */

/* Responsive padding */
@media (max-width: 639px) {
    .td-p-responsive { padding: var(--td-space-3); }
    .td-px-responsive { padding-left: var(--td-space-3); padding-right: var(--td-space-3); }
    .td-py-responsive { padding-top: var(--td-space-3); padding-bottom: var(--td-space-3); }
}

@media (min-width: 640px) and (max-width: 1023px) {
    .td-p-responsive { padding: var(--td-space-4); }
    .td-px-responsive { padding-left: var(--td-space-4); padding-right: var(--td-space-4); }
    .td-py-responsive { padding-top: var(--td-space-4); padding-bottom: var(--td-space-4); }
}

@media (min-width: 1024px) {
    .td-p-responsive { padding: var(--td-space-6); }
    .td-px-responsive { padding-left: var(--td-space-6); padding-right: var(--td-space-6); }
    .td-py-responsive { padding-top: var(--td-space-6); padding-bottom: var(--td-space-6); }
}

/* Responsive gaps */
@media (max-width: 639px) {
    .td-gap-responsive { gap: var(--td-space-3); }
}

@media (min-width: 640px) and (max-width: 1023px) {
    .td-gap-responsive { gap: var(--td-space-4); }
}

@media (min-width: 1024px) {
    .td-gap-responsive { gap: var(--td-space-6); }
}

/* ========================================
   15.13 RESPONSIVE TYPOGRAPHY
   ======================================== */

/* Fluid typography using clamp */
.td-text-fluid-sm {
    font-size: clamp(0.75rem, 2vw, 0.875rem);
}

.td-text-fluid-base {
    font-size: clamp(0.875rem, 2.5vw, 1rem);
}

.td-text-fluid-lg {
    font-size: clamp(1rem, 3vw, 1.25rem);
}

.td-text-fluid-xl {
    font-size: clamp(1.25rem, 4vw, 1.5rem);
}

.td-text-fluid-2xl {
    font-size: clamp(1.5rem, 5vw, 2rem);
}

.td-text-fluid-3xl {
    font-size: clamp(1.875rem, 6vw, 2.5rem);
}

/* ========================================
   15.14 RESPONSIVE GRID UTILITIES
   ======================================== */

/* Auto-fit grid */
.td-grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--td-space-4);
}

/* Responsive columns */
.td-cols-1 { grid-template-columns: 1fr; }

@media (min-width: 640px) {
    .td-sm\:cols-2 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
    .td-lg\:cols-2 { grid-template-columns: repeat(2, 1fr); }
    .td-lg\:cols-3 { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1024px) {
    .td-xl\:cols-3 { grid-template-columns: repeat(3, 1fr); }
    .td-xl\:cols-4 { grid-template-columns: repeat(4, 1fr); }
}

@media (min-width: 1280px) {
    .td-2xl\:cols-4 { grid-template-columns: repeat(4, 1fr); }
    .td-2xl\:cols-5 { grid-template-columns: repeat(5, 1fr); }
}

/* ========================================
   15.15 ORIENTATION UTILITIES
   ======================================== */

@media (orientation: landscape) and (max-height: 500px) {
    /* Landscape phone - compact UI */
    .td-header {
        height: 40px;
    }

    .td-bottom-nav {
        height: 44px;
    }

    .td-modal-body {
        max-height: 70vh;
    }
}

@media (orientation: portrait) {
    .td-hide-portrait { display: none !important; }
}

@media (orientation: landscape) {
    .td-hide-landscape { display: none !important; }
}

/* ========================================
   15.16 PRINT STYLES
   ======================================== */

@media print {
    .td-no-print { display: none !important; }

    .td-sidebar,
    .td-header,
    .td-bottom-nav,
    .td-modal-backdrop {
        display: none !important;
    }

    body {
        background: white !important;
        color: black !important;
    }

    .td-message-bubble {
        max-width: 100% !important;
        border: 1px solid #ccc !important;
        page-break-inside: avoid;
    }

    a[href]:after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }
}

/* ========================================
   15.17 REDUCED MOTION
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .td-spinner {
        animation: none;
    }
}

/* ========================================
   15.18 HIGH CONTRAST MODE
   ======================================== */

@media (prefers-contrast: high) {
    :root {
        --td-border-light: var(--td-gray-600);
        --td-border-default: var(--td-gray-700);
    }

    .td-btn {
        border: 2px solid currentColor;
    }

    .td-input,
    .td-select,
    .td-textarea {
        border-width: 2px;
    }
}