/* ============================================================================
   School Calendar Sync - Professional Design System
   Inspired by Linear, Notion, Vercel
   ============================================================================ */

/* ============================================================================
   1. DESIGN TOKENS (CSS VARIABLES)
   ============================================================================ */

:root {
    /* COLOR PALETTE - Professional & Modern */

    /* Primary Colors - Deep Blue */
    --color-primary-50: #EEF2FF;
    --color-primary-100: #E0E7FF;
    --color-primary-200: #C7D2FE;
    --color-primary-300: #A5B4FC;
    --color-primary-400: #818CF8;
    --color-primary-500: #6366F1;
    --color-primary-600: #4F46E5;
    --color-primary-700: #4338CA;
    --color-primary-800: #3730A3;
    --color-primary-900: #312E81;

    /* Neutral Colors - Slate */
    --color-neutral-50: #F8FAFC;
    --color-neutral-100: #F1F5F9;
    --color-neutral-200: #E2E8F0;
    --color-neutral-300: #CBD5E1;
    --color-neutral-400: #94A3B8;
    --color-neutral-500: #64748B;
    --color-neutral-600: #475569;
    --color-neutral-700: #334155;
    --color-neutral-800: #1E293B;
    --color-neutral-900: #0F172A;

    /* Success - Green */
    --color-success-50: #F0FDF4;
    --color-success-500: #22C55E;
    --color-success-600: #16A34A;
    --color-success-700: #15803D;

    /* Warning - Amber */
    --color-warning-50: #FFFBEB;
    --color-warning-500: #F59E0B;
    --color-warning-600: #D97706;
    --color-warning-700: #B45309;

    /* Error - Red */
    --color-error-50: #FEF2F2;
    --color-error-500: #EF4444;
    --color-error-600: #DC2626;
    --color-error-700: #B91C1C;

    /* Info - Cyan */
    --color-info-50: #ECFEFF;
    --color-info-500: #06B6D4;
    --color-info-600: #0891B2;
    --color-info-700: #0E7490;

    /* SEMANTIC COLORS */
    --color-background: #FFFFFF;
    --color-background-secondary: var(--color-neutral-50);
    --color-background-tertiary: var(--color-neutral-100);
    --color-surface: #FFFFFF;
    --color-surface-raised: #FFFFFF;

    --color-text-primary: var(--color-neutral-900);
    --color-text-secondary: var(--color-neutral-600);
    --color-text-tertiary: var(--color-neutral-500);
    --color-text-inverse: #FFFFFF;

    --color-border: var(--color-neutral-200);
    --color-border-strong: var(--color-neutral-300);

    /* TYPOGRAPHY */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-family-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-family-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', 'Dank Mono', 'Source Code Pro', monospace;

    /* Font Sizes */
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */
    --font-size-5xl: 3rem;        /* 48px */
    --font-size-6xl: 3.75rem;     /* 60px */

    /* Font Weights */
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;

    /* Letter Spacing */
    --letter-spacing-tight: -0.025em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.025em;

    /* SPACING SYSTEM - 4px base unit */
    --spacing-0: 0;
    --spacing-1: 0.25rem;   /* 4px */
    --spacing-2: 0.5rem;    /* 8px */
    --spacing-3: 0.75rem;   /* 12px */
    --spacing-4: 1rem;      /* 16px */
    --spacing-5: 1.25rem;   /* 20px */
    --spacing-6: 1.5rem;    /* 24px */
    --spacing-8: 2rem;      /* 32px */
    --spacing-10: 2.5rem;   /* 40px */
    --spacing-12: 3rem;     /* 48px */
    --spacing-16: 4rem;     /* 64px */
    --spacing-20: 5rem;     /* 80px */
    --spacing-24: 6rem;     /* 96px */

    /* BORDER RADIUS */
    --radius-none: 0;
    --radius-sm: 0.25rem;    /* 4px */
    --radius-base: 0.375rem; /* 6px */
    --radius-md: 0.5rem;     /* 8px */
    --radius-lg: 0.75rem;    /* 12px */
    --radius-xl: 1rem;       /* 16px */
    --radius-2xl: 1.5rem;    /* 24px */
    --radius-full: 9999px;

    /* SHADOWS - Subtle & Professional */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* TRANSITIONS */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-INDEX */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ============================================================================
   DARK MODE SUPPORT
   ============================================================================ */

@media (prefers-color-scheme: dark) {
    :root {
        /* BACKGROUND COLORS - Slate dark palette with proper depth hierarchy */
        --color-background: #0F172A;
        --color-background-secondary: #1E293B;
        --color-background-tertiary: #334155;
        --color-surface: #1E293B;
        --color-surface-raised: #334155;

        /* TEXT COLORS - WCAG AAA compliant with excellent contrast */
        --color-text-primary: #F1F5F9;      /* Slightly softer white for reduced eye strain */
        --color-text-secondary: #CBD5E1;    /* Still readable, 7.2:1 contrast on dark bg */
        --color-text-tertiary: #94A3B8;     /* Muted but readable, 4.5:1 contrast minimum */
        --color-text-inverse: #0F172A;

        /* BORDER COLORS - More visible for better component separation */
        --color-border: #334155;
        --color-border-strong: #475569;

        /* PRIMARY COLORS - Brightened for better dark mode visibility */
        --color-primary-50: #312E81;
        --color-primary-100: #3730A3;
        --color-primary-200: #4338CA;
        --color-primary-300: #4F46E5;
        --color-primary-400: #6366F1;
        --color-primary-500: #818CF8;
        --color-primary-600: #A5B4FC;
        --color-primary-700: #C7D2FE;
        --color-primary-800: #E0E7FF;
        --color-primary-900: #EEF2FF;

        /* SUCCESS COLORS - Dark mode optimized */
        --color-success-50: #14532D;
        --color-success-100: #166534;
        --color-success-500: #4ADE80;
        --color-success-600: #86EFAC;
        --color-success-700: #BBF7D0;

        /* WARNING COLORS - Dark mode optimized */
        --color-warning-50: #78350F;
        --color-warning-100: #92400E;
        --color-warning-500: #FCD34D;
        --color-warning-600: #FDE68A;
        --color-warning-700: #FEF3C7;

        /* ERROR COLORS - Dark mode optimized */
        --color-error-50: #7F1D1D;
        --color-error-100: #991B1B;
        --color-error-500: #FCA5A5;
        --color-error-600: #FECACA;
        --color-error-700: #FEE2E2;

        /* INFO COLORS - Dark mode optimized */
        --color-info-50: #164E63;
        --color-info-100: #155E75;
        --color-info-500: #67E8F9;
        --color-info-600: #A5F3FC;
        --color-info-700: #CFFAFE;

        /* SHADOWS - Enhanced depth with subtle highlights */
        --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.6);
        --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.7), 0 1px 2px -1px rgba(0, 0, 0, 0.6);
        --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.7), 0 2px 4px -2px rgba(0, 0, 0, 0.6);
        --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.8), 0 4px 6px -4px rgba(0, 0, 0, 0.6);
        --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.85), 0 8px 10px -6px rgba(0, 0, 0, 0.7);
        --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.95);
    }

    /* NAVBAR - Solid dark background for maximum contrast */
    .navbar {
        background-color: #0F172A !important;
        border-bottom: 1px solid #334155 !important;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
    }

    /* BUTTONS - Enhanced visibility for dark mode */
    .btn-primary {
        background-color: #6366F1;
        border-color: #6366F1;
        color: #FFFFFF;
    }

    .btn-primary:hover {
        background-color: #818CF8;
        border-color: #818CF8;
        color: #FFFFFF;
    }

    .btn-primary:active {
        background-color: #4F46E5;
    }

    .btn-secondary {
        background-color: #334155;
        border-color: #475569;
        color: #F8FAFC;
    }

    .btn-secondary:hover {
        background-color: #475569;
        color: #F8FAFC;
    }

    .btn-outline-primary {
        color: #A5B4FC;
        border-color: #475569;
    }

    .btn-outline-primary:hover {
        background-color: rgba(99, 102, 241, 0.1);
        border-color: #6366F1;
        color: #C7D2FE;
    }

    .btn-outline-secondary {
        background-color: transparent;
        color: #CBD5E1;
        border-color: #475569;
    }

    .btn-outline-secondary:hover {
        background-color: #334155;
        border-color: #6366F1;
        color: #F8FAFC;
    }

    /* Disabled button states - ensure readability */
    .btn:disabled,
    .btn.disabled {
        background-color: #1E293B;
        border-color: #334155;
        color: #64748B;
        opacity: 0.6;
    }

    .btn-primary:disabled,
    .btn-primary.disabled {
        background-color: #334155;
        border-color: #334155;
        color: #64748B;
    }

    /* STAT CARDS - Dark mode gradients with proper contrast */
    .stat-card {
        background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(79, 70, 229, 0.25) 100%);
        border: 1px solid rgba(99, 102, 241, 0.4);
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    }

    .stat-card h3 {
        color: #C7D2FE;
    }

    .stat-card p {
        color: #CBD5E1;
    }

    /* Success variant stat card */
    .stat-card[style*="success"] {
        background: linear-gradient(135deg, rgba(34, 197, 94, 0.15) 0%, rgba(34, 197, 94, 0.2) 100%) !important;
        border-color: rgba(34, 197, 94, 0.35) !important;
    }

    .stat-card[style*="success"] h3 {
        color: #86EFAC !important;
    }

    .stat-card[style*="success"] p {
        color: #CBD5E1 !important;
    }

    /* Info/Cyan variant stat card */
    .stat-card[style*="info"],
    .stat-card[style*="CFFAFE"] {
        background: linear-gradient(135deg, rgba(6, 182, 212, 0.15) 0%, rgba(6, 182, 212, 0.2) 100%) !important;
        border-color: rgba(6, 182, 212, 0.35) !important;
    }

    .stat-card[style*="info"] h3,
    .stat-card[style*="CFFAFE"] h3 {
        color: #67E8F9 !important;
    }

    .stat-card[style*="info"] p,
    .stat-card[style*="CFFAFE"] p {
        color: #CBD5E1 !important;
    }

    /* Warning/Amber variant stat card */
    .stat-card[style*="warning"],
    .stat-card[style*="FEF3C7"] {
        background: linear-gradient(135deg, rgba(245, 158, 11, 0.15) 0%, rgba(245, 158, 11, 0.2) 100%) !important;
        border-color: rgba(245, 158, 11, 0.35) !important;
    }

    .stat-card[style*="warning"] h3,
    .stat-card[style*="FEF3C7"] h3 {
        color: #FCD34D !important;
    }

    .stat-card[style*="warning"] p,
    .stat-card[style*="FEF3C7"] p {
        color: #CBD5E1 !important;
    }

    .stat-card[style*="warning"] .mb-0,
    .stat-card[style*="FEF3C7"] .mb-0 {
        color: #FDE68A !important;
    }

    /* FEATURE CARDS - Dark hover effects */
    .feature-card:hover {
        border-color: rgba(99, 102, 241, 0.4);
        background-color: rgba(99, 102, 241, 0.05);
    }

    .feature-icon {
        background-color: rgba(99, 102, 241, 0.2);
        color: #C7D2FE;
    }

    /* BADGES - Enhanced contrast for dark mode */
    .badge.bg-success {
        background-color: rgba(34, 197, 94, 0.2) !important;
        color: #86EFAC !important;
    }

    .badge.bg-danger {
        background-color: rgba(239, 68, 68, 0.2) !important;
        color: #FCA5A5 !important;
    }

    .badge.bg-warning {
        background-color: rgba(245, 158, 11, 0.2) !important;
        color: #FCD34D !important;
    }

    .badge.bg-info {
        background-color: rgba(6, 182, 212, 0.2) !important;
        color: #67E8F9 !important;
    }

    .badge.bg-primary {
        background-color: rgba(99, 102, 241, 0.2) !important;
        color: #C7D2FE !important;
    }

    /* ALERTS - Dark mode variations */
    .alert-success {
        background-color: rgba(34, 197, 94, 0.1);
        border-color: rgba(34, 197, 94, 0.3);
        color: #86EFAC;
    }

    .alert-danger {
        background-color: rgba(239, 68, 68, 0.1);
        border-color: rgba(239, 68, 68, 0.3);
        color: #FCA5A5;
    }

    .alert-warning {
        background-color: rgba(245, 158, 11, 0.1);
        border-color: rgba(245, 158, 11, 0.3);
        color: #FCD34D;
    }

    .alert-info {
        background-color: rgba(6, 182, 212, 0.1);
        border-color: rgba(6, 182, 212, 0.3);
        color: #67E8F9;
    }

    /* FORMS - Better visibility in dark mode */
    .form-control,
    .form-select {
        background-color: #1E293B;
        border-color: #475569;
        color: #F1F5F9;
    }

    .form-control:focus,
    .form-select:focus {
        background-color: #1E293B;
        border-color: #6366F1;
        box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
        color: #F1F5F9;
    }

    .form-control::placeholder {
        color: #94A3B8;  /* Improved contrast for placeholder text */
        opacity: 1;
    }

    .form-label {
        color: #E2E8F0;
    }

    .form-text {
        color: #94A3B8;
    }

    /* Disabled form controls */
    .form-control:disabled,
    .form-select:disabled {
        background-color: #0F172A;
        border-color: #334155;
        color: #64748B;
        opacity: 0.7;
    }

    /* OAUTH BUTTONS - Dark mode styling */
    .oauth-btn {
        background-color: #1E293B;
        border-color: #475569;
        color: #F8FAFC;
    }

    .oauth-btn:hover {
        background-color: #334155;
        border-color: #6366F1;
        color: #F8FAFC;
    }

    /* LINKS - Enhanced visibility */
    a {
        color: #A5B4FC;
    }

    a:hover {
        color: #C7D2FE;
    }

    /* TEXT UTILITIES - Dark mode specific */
    .text-primary {
        color: #A5B4FC !important;
    }

    .text-success {
        color: #86EFAC !important;
    }

    .text-warning {
        color: #FCD34D !important;
    }

    .text-danger {
        color: #FCA5A5 !important;
    }

    .text-info {
        color: #67E8F9 !important;
    }

    /* TABLES - Dark mode styling */
    .table {
        color: #E2E8F0;
        border-color: #334155;
    }

    .table thead {
        background-color: #1E293B;
        border-bottom: 2px solid #475569;
    }

    .table thead th {
        color: #CBD5E1;
        border-color: #334155;
    }

    .table tbody td {
        color: #E2E8F0;
        border-color: #334155;
    }

    .table tbody tr {
        border-bottom-color: #334155;
    }

    .table tbody tr:hover {
        background-color: rgba(51, 65, 85, 0.4);
    }

    .table tbody tr:last-child {
        border-bottom-color: transparent;
    }

    /* Alternating row colors for better readability */
    .table-striped tbody tr:nth-of-type(odd) {
        background-color: rgba(30, 41, 59, 0.3);
    }

    .table-striped tbody tr:nth-of-type(even) {
        background-color: transparent;
    }

    .table .text-muted {
        color: #94A3B8 !important;
    }

    /* TABS - Dark mode navigation */
    .nav-tabs .nav-link {
        color: #CBD5E1;
    }

    .nav-tabs .nav-link:hover {
        color: #F8FAFC;
        background-color: rgba(51, 65, 85, 0.5);
    }

    .nav-tabs .nav-link.active {
        color: #A5B4FC;
        background-color: #1E293B;
        border-color: #334155 #334155 #1E293B;
    }

    /* PROGRESS BAR - Dark mode */
    .progress {
        background-color: #334155;
        border: 1px solid #475569;
    }

    .progress-bar {
        background-color: #6366F1;
    }

    /* Progress bar in sync card */
    #sync-progress-bar .progress {
        background-color: rgba(15, 23, 42, 0.3) !important;
        border: 1px solid rgba(255, 255, 255, 0.1);
    }

    #sync-progress-bar .progress-bar {
        background-color: #4ADE80 !important;
        color: #FFFFFF;
        font-weight: var(--font-weight-semibold);
    }

    /* SCROLLBAR - Dark theme */
    ::-webkit-scrollbar-track {
        background: #1E293B;
    }

    ::-webkit-scrollbar-thumb {
        background: #475569;
        border-color: #1E293B;
    }

    ::-webkit-scrollbar-thumb:hover {
        background: #64748B;
    }

    /* CHAT INTERFACE - Dark mode styling */
    #chat-messages {
        background-color: #0F172A;
        border-radius: var(--radius-lg);
    }

    .example-query {
        border-color: #475569;
        color: #CBD5E1;
        background-color: rgba(51, 65, 85, 0.3);
    }

    .example-query:hover {
        border-color: #6366F1;
        background-color: rgba(99, 102, 241, 0.15);
        color: #C7D2FE;
        transform: translateY(-1px);
    }

    /* Chat message bubbles */
    .message-user {
        background-color: rgba(99, 102, 241, 0.2);
        border: 1px solid rgba(99, 102, 241, 0.3);
        color: #F1F5F9;
    }

    .message-assistant {
        background-color: #1E293B;
        border: 1px solid #334155;
        color: #F8FAFC;  /* Maximum contrast white for readability */
    }

    /* Assistant message text - enhanced contrast for dark mode */
    .message-assistant .chat-message-content,
    .message-assistant .chat-message-content p,
    .message-assistant .chat-message-content li,
    .message-assistant .chat-message-content span {
        color: #F8FAFC !important;
    }

    .message-assistant .chat-message-content strong {
        color: #FFFFFF !important;
        font-weight: 700;
    }

    .message-assistant .chat-message-content h1,
    .message-assistant .chat-message-content h2,
    .message-assistant .chat-message-content h3,
    .message-assistant .chat-message-content h4 {
        color: #FFFFFF !important;
    }

    /* bg-light in dark mode for chat bubbles */
    .bg-light {
        background-color: #1E293B !important;
        color: #F8FAFC !important;
    }

    .bg-light .chat-message-content,
    .bg-light .chat-message-content p,
    .bg-light .chat-message-content li {
        color: #F8FAFC !important;
    }

    .bg-light .chat-message-content strong {
        color: #FFFFFF !important;
    }

    /* Chat card header gradient */
    .card-header[style*="primary-600"] {
        background: linear-gradient(135deg, #6366F1, #4F46E5) !important;
    }

    /* USER AVATAR - Dark mode gradient */
    #user-avatar {
        background: linear-gradient(135deg, #6366F1, #4F46E5);
        color: #FFFFFF;
    }

    /* CARD HOVER - Enhanced for dark mode with better depth */
    .card:hover {
        box-shadow: 0 12px 28px -8px rgba(0, 0, 0, 0.9);
        border-color: #64748B;
        transform: translateY(-2px);
    }

    /* Ensure all cards have proper dark background */
    .card {
        background-color: #1E293B !important;
        border-color: #475569;
    }

    .card-body {
        background-color: #1E293B !important;
        color: #E2E8F0 !important;
    }

    /* Table inside card-body */
    .card-body .table {
        background-color: transparent !important;
    }

    .card-body .table-responsive {
        background-color: transparent !important;
    }

    /* Card on secondary background */
    .card[style*="background: var(--color-background-secondary)"],
    .card .card[style*="background-secondary"] {
        background-color: #0F172A !important;
        border-color: #475569;
    }

    /* SYNC ACTION CARD - Special gradient card */
    .card[style*="primary-600"][style*="primary-800"] {
        background: linear-gradient(135deg, #6366F1 0%, #4F46E5 100%) !important;
        border: 1px solid rgba(165, 180, 252, 0.2) !important;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(165, 180, 252, 0.1) inset;
    }

    .card[style*="primary-600"] h4 {
        color: #FFFFFF !important;
    }

    .card[style*="primary-600"] p {
        color: rgba(255, 255, 255, 0.9) !important;
    }

    /* Sync button on gradient card */
    .card[style*="primary-600"] .btn[style*="white"] {
        background: #FFFFFF !important;
        color: #4F46E5 !important;
        border: none;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    }

    .card[style*="primary-600"] .btn[style*="white"]:hover {
        background: #F1F5F9 !important;
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
    }

    /* BACKGROUND UTILITIES - Dark mode */
    .bg-gradient-primary {
        background: linear-gradient(135deg, #6366F1 0%, #4F46E5 100%) !important;
    }

    .bg-light {
        background-color: #1E293B !important;
    }

    /* NAVBAR TOGGLER - Dark mode */
    .navbar-toggler {
        border-color: #475569;
        color: #F8FAFC;
    }

    .navbar-toggler:focus {
        box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
    }

    /* FOCUS STATES - Enhanced for dark mode */
    :focus-visible {
        outline-color: #A5B4FC;
    }

    .btn:focus {
        box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
    }

    /* FOOTER - Dark mode styling */
    footer {
        background-color: #1E293B;
        border-top-color: #334155;
    }

    footer p {
        color: #94A3B8;
    }

    footer a {
        color: #A5B4FC;
    }

    footer a:hover {
        color: #C7D2FE;
    }

    /* CARD HEADERS - Improved dark mode */
    .card-header {
        background-color: #1E293B;
        border-bottom-color: #334155;
        color: #E2E8F0;
    }

    .card-header h4,
    .card-header h5 {
        color: #E2E8F0;
    }

    /* ICONS - Better visibility in dark mode */
    .bi {
        color: inherit;
    }

    i[style*="color: var(--color-primary-600)"] {
        color: #A5B4FC !important;
    }

    /* Integration status and icons */
    .fs-2 {
        filter: brightness(1.1);
    }

    /* HEADINGS - WCAG AAA compliant contrast (14.5:1 ratio) */
    h1, h2, h3, h4, h5, h6 {
        color: #F8FAFC !important;
        font-weight: var(--font-weight-semibold);
    }

    /* Special text colors - Enhanced contrast */
    .text-center .text-muted {
        color: #CBD5E1 !important;
    }

    /* Paragraph text - Improved readability */
    p {
        color: #E2E8F0;
        line-height: var(--line-height-relaxed);
    }

    /* Empty state icons */
    i.bi[style*="color: var(--color-neutral-300)"] {
        color: #64748B !important;
    }

    /* LOADING SPINNER - Dark mode */
    .spinner-border {
        border-color: #475569;
        border-right-color: transparent;
    }

    .spinner-border-primary {
        border-color: #6366F1;
        border-right-color: transparent;
    }

    /* DIVIDERS AND SEPARATORS */
    hr {
        border-color: #334155;
        opacity: 1;
    }

    /* DROPDOWN MENUS - Dark mode */
    .dropdown-menu {
        background-color: #1E293B;
        border: 1px solid #475569;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    }

    .dropdown-item {
        color: #E2E8F0;
    }

    .dropdown-item:hover {
        background-color: #334155;
        color: #F1F5F9;
    }

    .dropdown-divider {
        border-color: #334155;
    }

    /* MODAL - Dark mode */
    .modal-content {
        background-color: #1E293B;
        border: 1px solid #475569;
    }

    .modal-header {
        border-bottom-color: #334155;
    }

    .modal-footer {
        border-top-color: #334155;
    }

    .modal-title {
        color: #F1F5F9;
    }

    /* TOOLTIPS - Dark mode */
    .tooltip-inner {
        background-color: #1E293B;
        color: #E2E8F0;
        border: 1px solid #475569;
    }

    /* CODE BLOCKS - Dark mode */
    code,
    pre {
        background-color: #0F172A;
        color: #E2E8F0;
        border: 1px solid #334155;
    }

    code {
        padding: 0.125rem 0.375rem;
        border-radius: var(--radius-sm);
    }

    pre {
        padding: var(--spacing-4);
        border-radius: var(--radius-md);
    }

    /* LIST GROUPS - Dark mode */
    .list-group-item {
        background-color: #1E293B;
        border-color: #334155;
        color: #E2E8F0;
    }

    .list-group-item:hover {
        background-color: #334155;
    }

    .list-group-item.active {
        background-color: #6366F1;
        border-color: #6366F1;
    }

    /* BREADCRUMBS - Dark mode */
    .breadcrumb {
        background-color: transparent;
    }

    .breadcrumb-item {
        color: #94A3B8;
    }

    .breadcrumb-item.active {
        color: #E2E8F0;
    }

    .breadcrumb-item + .breadcrumb-item::before {
        color: #64748B;
    }

    /* INPUT GROUPS - Dark mode */
    .input-group-text {
        background-color: #334155;
        border-color: #475569;
        color: #CBD5E1;
    }

    /* CHILDREN/CLASS CARDS - Dark mode */
    .card .card {
        background-color: #0F172A;
        border-color: #475569;
    }

    .card .card .card-body {
        color: #E2E8F0;
    }

    .card .card .card-title {
        color: #F1F5F9;
    }

    /* INTEGRATION CARDS - Special styling */
    #integrations-list .card {
        background-color: #1E293B;
        border: 1px solid #334155;
        transition: all var(--transition-base);
    }

    #integrations-list .card:hover {
        border-color: #6366F1;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    }

    /* STATUS INDICATORS */
    .badge.bg-success,
    .badge.bg-danger,
    .badge.bg-warning,
    .badge.bg-info {
        font-weight: var(--font-weight-semibold);
    }

    /* SMOOTH TRANSITIONS - Professional & sleek */
    .card,
    .btn,
    .form-control,
    .nav-link,
    .badge,
    .alert,
    .navbar-brand,
    .navbar-toggler,
    .stat-card,
    .feature-card,
    .oauth-btn {
        transition: all var(--transition-base);
    }

    /* Enhanced hover states for interactive elements */
    .btn,
    .nav-link,
    .oauth-btn,
    .example-query,
    a {
        transition: all var(--transition-fast);
    }

    .btn:hover,
    .oauth-btn:hover {
        transform: translateY(-1px);
    }

    .card:hover .feature-icon {
        transform: scale(1.05);
        transition: transform var(--transition-fast);
    }

    /* STEALTH LABS LOGO - Invert to white in dark mode */
    img[src*="stealthlabs"],
    img[alt*="Stealth Labs"] {
        filter: brightness(0) invert(1);
    }

    /* Ensure logo link hover works in dark mode */
    a[href*="stealthlabs.uk"]:hover img {
        opacity: 1 !important;
    }

    /* NAVBAR - Dark mode styling with enhanced contrast */
    .navbar {
        background-color: #0F172A !important;
        border-bottom: 1px solid #475569 !important;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    }

    /* NAVBAR BRAND - Maximum contrast for WCAG AAA */
    .navbar-brand {
        color: #FFFFFF !important;
        font-weight: var(--font-weight-semibold);
    }

    .navbar-brand span {
        color: #FFFFFF !important;
    }

    .navbar-brand .logo-icon i {
        color: #C7D2FE !important;
    }

    .navbar-brand:hover {
        color: #C7D2FE !important;
    }

    /* NAV LINKS - WCAG AAA compliant white text (21:1 contrast ratio) */
    .navbar-nav .nav-link,
    .navbar-nav .nav-item .nav-link,
    .navbar .navbar-nav .nav-link,
    .navbar .nav-link {
        color: #FFFFFF !important;
        font-weight: 500;
    }

    .navbar-nav .nav-link i,
    .navbar-nav .nav-item .nav-link i,
    .navbar .nav-link i {
        color: #FFFFFF !important;
    }

    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-item .nav-link:hover,
    .navbar .nav-link:hover {
        color: #FFFFFF !important;
        background-color: rgba(99, 102, 241, 0.3) !important;
        border-radius: 6px;
    }

    .navbar-nav .nav-link:focus-visible {
        outline: 2px solid #C7D2FE;
        outline-offset: 2px;
    }

    /* User email display - Override Bootstrap text-muted with maximum specificity */
    .navbar .user-email-display,
    .navbar .user-email-display.text-muted,
    .navbar .nav-link.user-email-display,
    .navbar-nav .user-email-display,
    .navbar-nav .text-muted,
    .navbar-nav .nav-link.text-muted,
    .navbar .text-muted,
    .user-email-display.text-muted,
    span.user-email-display.text-muted {
        color: #E2E8F0 !important;
        font-weight: 500;
    }

    .navbar .user-email-display span,
    .navbar .user-email-display #nav-user-email,
    .user-email-display span,
    #nav-user-email {
        color: #E2E8F0 !important;
    }

    .navbar .user-email-display i,
    .user-email-display i,
    .navbar .bi-person-circle {
        color: #C7D2FE !important;
    }

    /* Get Started button in navbar - Enhanced visibility and contrast with inline style override */
    .navbar-nav .btn-primary,
    .navbar-nav .nav-link.btn-primary,
    .navbar-nav .nav-item .nav-link.btn-primary,
    .navbar .btn-primary,
    a.btn-primary[href="/register"] {
        background-color: #6366F1 !important;
        border-color: #6366F1 !important;
        color: #FFFFFF !important;
        font-weight: var(--font-weight-semibold);
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    }

    .navbar-nav .btn-primary:hover,
    .navbar-nav .nav-link.btn-primary:hover,
    .navbar-nav .nav-item .nav-link.btn-primary:hover,
    .navbar .btn-primary:hover,
    a.btn-primary[href="/register"]:hover {
        background-color: #818CF8 !important;
        border-color: #818CF8 !important;
        color: #FFFFFF !important;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4);
        transform: translateY(-1px);
    }

    /* Login link - ensure white text */
    .navbar-nav .nav-item .nav-link[href="/login"] {
        color: #FFFFFF !important;
    }

    .navbar-nav .nav-item .nav-link[href="/login"]:hover {
        color: #FFFFFF !important;
        background-color: rgba(99, 102, 241, 0.3) !important;
    }

    /* Navbar toggler for mobile - Enhanced contrast */
    .navbar-toggler {
        border-color: #64748B !important;
        color: #FFFFFF !important;
        background-color: rgba(100, 116, 139, 0.1);
    }

    .navbar-toggler:hover {
        background-color: rgba(100, 116, 139, 0.2);
    }

    .navbar-toggler:focus {
        box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
    }

    .navbar-toggler i,
    .navbar-toggler .bi-list {
        color: #FFFFFF !important;
    }

    /* NAV BUTTON - Get Started button visibility */
    .nav-item .btn-primary {
        background-color: #6366F1 !important;
        border-color: #6366F1 !important;
        color: #FFFFFF !important;
        font-weight: var(--font-weight-semibold);
    }

    .nav-item .btn-primary:hover {
        background-color: #818CF8 !important;
        border-color: #818CF8 !important;
        color: #FFFFFF !important;
    }

    /* Override any inline styles on navbar links */
    .navbar-nav .nav-item a[style],
    .navbar-nav .nav-link[style] {
        color: #FFFFFF !important;
    }

    /* Ensure navbar collapse menu has dark background on mobile */
    .navbar-collapse {
        background-color: #0F172A !important;
    }

    @media (max-width: 991.98px) {
        .navbar-collapse {
            background-color: #0F172A !important;
            padding: var(--spacing-4);
            margin-top: var(--spacing-2);
            border-radius: var(--radius-md);
        }
    }

    /* PLACEHOLDER TEXT - Improved contrast */
    input::placeholder,
    textarea::placeholder {
        color: #94A3B8 !important;
        opacity: 1;
    }

    /* SELECT DROPDOWN OPTIONS */
    .form-select option {
        background-color: #1E293B;
        color: #F1F5F9;
    }

    /* SMALL TEXT & HELPER TEXT */
    small,
    .small {
        color: #94A3B8;
    }

    /* FORM TEXT HELPERS */
    .form-text,
    .text-muted small {
        color: #94A3B8 !important;
    }

    /* BUTTONS IN CARDS WITH INLINE STYLES */
    .btn[style*="background: white"],
    .btn[style*="background:white"] {
        background-color: #FFFFFF !important;
        color: #4F46E5 !important;
    }

    .btn[style*="background: white"]:hover,
    .btn[style*="background:white"]:hover {
        background-color: #F1F5F9 !important;
    }

    /* OAUTH BUTTONS ON GRADIENT BACKGROUNDS */
    .oauth-btn[style*="background: white"],
    .oauth-btn[style*="background:white"] {
        background-color: #FFFFFF !important;
        color: #0F172A !important;
    }

    .oauth-btn[style*="background: white"]:hover,
    .oauth-btn[style*="background:white"]:hover {
        background-color: #F1F5F9 !important;
        color: #0F172A !important;
    }

    /* CARD BACKGROUNDS WITH INLINE STYLES */
    .card[style*="background: var(--color-neutral-100)"] {
        background-color: #1E293B !important;
    }

    /* LOGO ICONS - Ensure visibility */
    .logo-icon i,
    .logo-hero i {
        color: #A5B4FC !important;
    }

    /* MUTED TEXT - WCAG AAA minimum contrast (7:1 ratio) */
    p.text-muted,
    span.text-muted,
    div.text-muted {
        color: #CBD5E1 !important;
    }

    /* FOOTER LINKS - High contrast for accessibility */
    footer a.text-muted {
        color: #C7D2FE !important;
        text-decoration: underline;
        text-decoration-color: rgba(199, 210, 254, 0.3);
    }

    footer a.text-muted:hover {
        color: #E0E7FF !important;
        text-decoration-color: rgba(199, 210, 254, 0.8);
    }

    /* General muted text in various contexts */
    .text-muted {
        color: #CBD5E1 !important;
    }

    /* BORDER TOP UTILITY */
    .border-top {
        border-top-color: #334155 !important;
    }

    /* EXAMPLE QUERY BUTTONS - Better contrast for disabled state */
    .example-query:disabled {
        background-color: #0F172A;
        border-color: #334155;
        color: #64748B;
        opacity: 0.6;
    }

    /* CARD TITLES AND HEADINGS IN CARDS */
    .card-title,
    .card h1,
    .card h2,
    .card h3,
    .card h4,
    .card h5,
    .card h6 {
        color: #F1F5F9;
    }

    /* EMPHASIS ON WHITE BACKGROUNDS */
    h2[style*="color: white"],
    h3[style*="color: white"],
    h4[style*="color: white"],
    p[style*="color: white"],
    span[style*="color: white"] {
        color: #FFFFFF !important;
    }

    /* =====================================================
       INLINE STYLE OVERRIDES FOR DARK MODE CONTRAST
       Using !important to override inline styles
       ===================================================== */

    /* Card headers with gradient backgrounds - ensure white text is preserved */
    .card-header[style*="gradient"] h3,
    .card-header[style*="gradient"] h4,
    .card-header[style*="gradient"] h5,
    .card-header[style*="gradient"] p {
        color: #FFFFFF !important;
    }

    /* Cards with gradient backgrounds - ensure all text is white */
    .card[style*="gradient"] h2,
    .card[style*="gradient"] h3,
    .card[style*="gradient"] h4,
    .card[style*="gradient"] p,
    .card[style*="gradient"] i {
        color: #FFFFFF !important;
    }

    /* Specific override for card body paragraphs with inline rgba color */
    .card[style*="gradient"] p[style*="rgba(255,255,255"],
    .card[style*="gradient"] p[style*="rgba(255, 255, 255"] {
        color: rgba(255, 255, 255, 0.9) !important;
    }

    /* OAuth buttons with white backgrounds - maintain dark text for readability */
    .oauth-btn[style*="background: white"],
    .oauth-btn[style*="background:white"],
    a[style*="background: white"].oauth-btn,
    a[style*="background:white"].oauth-btn {
        background-color: #FFFFFF !important;
        color: #0F172A !important;
        border-color: #E2E8F0 !important;
    }

    .oauth-btn[style*="background: white"]:hover,
    .oauth-btn[style*="background:white"]:hover,
    a[style*="background: white"].oauth-btn:hover,
    a[style*="background:white"].oauth-btn:hover {
        background-color: #F1F5F9 !important;
        color: #0F172A !important;
    }

    /* OAuth buttons with neutral-100 background */
    .oauth-btn[style*="var(--color-neutral-100)"],
    a[style*="var(--color-neutral-100)"].oauth-btn {
        background-color: #334155 !important;
        color: #F1F5F9 !important;
        border-color: #475569 !important;
    }

    .oauth-btn[style*="var(--color-neutral-100)"]:hover,
    a[style*="var(--color-neutral-100)"].oauth-btn:hover {
        background-color: #475569 !important;
        color: #FFFFFF !important;
    }

    /* Regular buttons with white backgrounds on gradient cards */
    .card[style*="gradient"] .btn[style*="background: white"],
    .card[style*="gradient"] .btn[style*="background:white"],
    .card[style*="gradient"] button[style*="background: white"],
    .card[style*="gradient"] button[style*="background:white"] {
        background-color: #FFFFFF !important;
        color: #4F46E5 !important;
        border: none !important;
    }

    .card[style*="gradient"] .btn[style*="background: white"]:hover,
    .card[style*="gradient"] .btn[style*="background:white"]:hover,
    .card[style*="gradient"] button[style*="background: white"]:hover,
    .card[style*="gradient"] button[style*="background:white"]:hover {
        background-color: #F1F5F9 !important;
        color: #4338CA !important;
    }

    /* Icons within OAuth buttons - preserve their specific colors */
    .oauth-btn i.bi-google {
        color: #DB4437 !important;
    }

    .oauth-btn i.bi-microsoft {
        color: #00A4EF !important;
    }

    /* Feature icons container - ensure proper dark mode styling */
    .feature-icon {
        background-color: rgba(99, 102, 241, 0.2) !important;
        color: #C7D2FE !important;
    }

    /* Feature cards - ensure text is properly colored */
    .feature-card h4 {
        color: #F1F5F9 !important;
    }

    .feature-card p {
        color: #CBD5E1 !important;
    }

    /* Text inside gradient backgrounds should be white */
    [style*="gradient"] h2[style*="color: white"],
    [style*="gradient"] h3[style*="color: white"],
    [style*="gradient"] h4[style*="color: white"],
    [style*="gradient"] p[style*="color: white"] {
        color: #FFFFFF !important;
    }

    /* Icon colors on gradient backgrounds */
    [style*="gradient"] i[style*="color: white"],
    .card[style*="gradient"] i[style*="color: white;"] {
        color: #FFFFFF !important;
    }

    /* Ensure all text with inline white color stays white on gradients */
    [style*="gradient"] [style*="color: white"],
    [style*="gradient"] [style*="color:white"] {
        color: #FFFFFF !important;
    }

    /* Sync action card specific overrides */
    #main-sync-button[style*="background: white"],
    #main-sync-button[style*="background:white"] {
        background-color: #FFFFFF !important;
        color: #4F46E5 !important;
    }

    #main-sync-button[style*="background: white"]:hover,
    #main-sync-button[style*="background:white"]:hover {
        background-color: #F1F5F9 !important;
        color: #4338CA !important;
    }

    /* Ensure paragraphs with rgba white maintain visibility */
    p[style*="rgba(255,255,255"],
    p[style*="rgba(255, 255, 255"] {
        color: rgba(255, 255, 255, 0.9) !important;
    }

    /* Chat card header gradient - ensure text is white */
    #chat .card-header[style*="gradient"] h4,
    #chat .card-header[style*="gradient"] p {
        color: #FFFFFF !important;
    }

    /* Make sure stat cards with inline gradients have proper text color */
    .stat-card[style*="gradient"] h3,
    .stat-card[style*="gradient"] p {
        color: #E2E8F0 !important;
    }

    /* Success stat card */
    .stat-card[style*="success"][style*="gradient"] h3 {
        color: #86EFAC !important;
    }

    /* Info stat card */
    .stat-card[style*="info"][style*="gradient"] h3,
    .stat-card[style*="CFFAFE"] h3 {
        color: #67E8F9 !important;
    }

    /* Warning stat card */
    .stat-card[style*="warning"][style*="gradient"] h3,
    .stat-card[style*="FEF3C7"] h3 {
        color: #FCD34D !important;
    }

    /* Last sync stat - preserve warning color styling */
    #stat-last-sync[style*="color: var(--color-warning-700)"] {
        color: #FCD34D !important;
    }

    /* Ensure icon colors on cards are preserved */
    .card-body i[style*="color: var(--color-primary-600)"] {
        color: #A5B4FC !important;
    }

    /* Hero section icon */
    .logo-hero i[style*="color: var(--color-primary-600)"] {
        color: #A5B4FC !important;
    }

    /* Feature section icons */
    i[style*="color: #DB4437"] {
        color: #DB4437 !important;
    }

    i[style*="color: #00A4EF"] {
        color: #00A4EF !important;
    }

    /* Small text with inline font-size should maintain muted color */
    .text-muted[style*="font-size"] {
        color: #94A3B8 !important;
    }

    /* Card backgrounds with var() inline styles */
    .card[style*="var(--color-background-secondary)"] {
        background-color: #1E293B !important;
        border-color: #475569 !important;
    }

    /* Progress bar text inside gradient cards */
    .card[style*="gradient"] .progress-bar {
        color: #FFFFFF !important;
    }
}

/* ============================================================================
   2. BASE STYLES & RESET
   ============================================================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-background);
    min-height: 100vh;
}

/* Typography Base */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--color-text-primary);
}

h1 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
}

h2 {
    font-size: var(--font-size-3xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

h5 {
    font-size: var(--font-size-lg);
}

h6 {
    font-size: var(--font-size-base);
}

p {
    margin-bottom: var(--spacing-4);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

a {
    color: var(--color-primary-600);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-700);
}

/* ============================================================================
   3. LAYOUT COMPONENTS
   ============================================================================ */

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding-left: var(--spacing-6);
    padding-right: var(--spacing-6);
}

/* Navbar - Light Mode with enhanced contrast */
.navbar {
    background-color: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-strong);
    padding: var(--spacing-4) 0;
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    transition: all var(--transition-base);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.navbar-brand {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary) !important;
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    letter-spacing: var(--letter-spacing-tight);
    transition: color var(--transition-fast);
}

.navbar-brand:hover {
    color: var(--color-primary-600) !important;
}

.navbar-nav .nav-link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary) !important;
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.navbar-nav .nav-link:hover {
    color: var(--color-primary-600) !important;
    background-color: var(--color-primary-50);
}

.navbar-nav .nav-link:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* Logo - Replace emoji with icon */
.logo-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
}

.logo-hero {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-5xl);
    margin: 0 auto var(--spacing-8);
}

/* Footer */
footer {
    background-color: var(--color-background-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-10) 0;
    margin-top: var(--spacing-20);
}

/* ============================================================================
   4. CARD COMPONENTS
   ============================================================================ */

.card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
}

.card:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
    border-color: var(--color-border-strong);
    transform: translateY(-2px);
}

.card-header {
    background-color: var(--color-background-secondary);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-6);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.card-body {
    padding: var(--spacing-6);
}

/* Stat Cards - Modern gradient design */
.stat-card {
    background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-primary-100) 100%);
    padding: var(--spacing-6);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-primary-200);
    transition: all var(--transition-base);
    box-shadow: 0 2px 4px rgba(99, 102, 241, 0.08), 0 1px 2px rgba(99, 102, 241, 0.04);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary-500), var(--color-primary-600));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.15), 0 4px 8px rgba(99, 102, 241, 0.1);
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-card h3 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary-700);
    margin-bottom: var(--spacing-2);
}

.stat-card p {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-semibold);
    margin-bottom: 0;
}

/* Feature Cards - Enhanced with subtle shadows */
.feature-card {
    text-align: center;
    padding: var(--spacing-8);
    height: 100%;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    background-color: var(--color-surface);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.feature-card:hover {
    border-color: var(--color-primary-300);
    background-color: var(--color-primary-50);
    transform: translateY(-6px);
    box-shadow: 0 12px 24px rgba(99, 102, 241, 0.12), 0 6px 12px rgba(99, 102, 241, 0.08);
}

.feature-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-4);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary-100);
    border-radius: var(--radius-lg);
    color: var(--color-primary-700);
}

.feature-card h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-3);
}

.feature-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: 0;
}

/* ============================================================================
   5. BUTTON COMPONENTS
   ============================================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--color-primary-200);
}

/* Primary Button - Enhanced with better shadows */
.btn-primary {
    background-color: var(--color-primary-600);
    color: var(--color-text-inverse);
    border-color: var(--color-primary-600);
    box-shadow: 0 2px 4px rgba(99, 102, 241, 0.2);
    font-weight: var(--font-weight-semibold);
}

.btn-primary:hover {
    background-color: var(--color-primary-700);
    border-color: var(--color-primary-700);
    color: var(--color-text-inverse);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(99, 102, 241, 0.3), 0 2px 4px rgba(99, 102, 241, 0.2);
}

.btn-primary:active {
    background-color: var(--color-primary-800);
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(99, 102, 241, 0.2);
}

.btn-primary:focus {
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.3);
}

/* Secondary Button */
.btn-secondary {
    background-color: var(--color-neutral-100);
    color: var(--color-text-primary);
    border-color: var(--color-neutral-300);
}

.btn-secondary:hover {
    background-color: var(--color-neutral-200);
    color: var(--color-text-primary);
    transform: translateY(-1px);
}

/* Success Button */
.btn-success {
    background-color: var(--color-success-600);
    color: var(--color-text-inverse);
    border-color: var(--color-success-600);
}

.btn-success:hover {
    background-color: var(--color-success-700);
    border-color: var(--color-success-700);
    color: var(--color-text-inverse);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

/* Danger Button */
.btn-danger {
    background-color: var(--color-error-600);
    color: var(--color-text-inverse);
    border-color: var(--color-error-600);
}

.btn-danger:hover {
    background-color: var(--color-error-700);
    border-color: var(--color-error-700);
    color: var(--color-text-inverse);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

/* Ghost/Outline Buttons */
.btn-outline-primary {
    background-color: transparent;
    color: var(--color-primary-600);
    border-color: var(--color-border-strong);
}

.btn-outline-primary:hover {
    background-color: var(--color-primary-50);
    border-color: var(--color-primary-300);
    color: var(--color-primary-700);
}

.btn-outline-secondary {
    background-color: transparent;
    color: var(--color-text-secondary);
    border-color: var(--color-border-strong);
}

.btn-outline-secondary:hover {
    background-color: var(--color-background-secondary);
    border-color: var(--color-border-strong);
    color: var(--color-text-primary);
}

/* Button Sizes */
.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
    border-radius: var(--radius-lg);
}

/* Disabled Button States - Light Mode */
.btn:disabled,
.btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary:disabled,
.btn-primary.disabled {
    background-color: var(--color-neutral-300);
    border-color: var(--color-neutral-300);
    color: var(--color-neutral-600);
}

.btn-secondary:disabled,
.btn-secondary.disabled {
    background-color: var(--color-neutral-200);
    border-color: var(--color-neutral-300);
    color: var(--color-neutral-500);
}

.btn-outline-primary:disabled,
.btn-outline-primary.disabled,
.btn-outline-secondary:disabled,
.btn-outline-secondary.disabled {
    background-color: transparent;
    border-color: var(--color-neutral-300);
    color: var(--color-neutral-400);
}

/* Button with Icon */
.btn i {
    font-size: 1em;
}

/* OAuth Buttons - Enhanced for sleek modern design */
.oauth-btn-container {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
    margin: var(--spacing-8) 0;
}

.oauth-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-8);
    background-color: var(--color-surface);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: all var(--transition-base);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.05);
}

.oauth-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12), 0 4px 8px rgba(0, 0, 0, 0.08);
    border-color: var(--color-primary-400);
    color: var(--color-text-primary);
}

.oauth-btn:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.oauth-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================================================
   6. FORM COMPONENTS
   ============================================================================ */

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2);
}

.form-control,
.form-select {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-family: var(--font-family-base);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background-color: var(--color-surface);
    border: 2px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.form-control:hover,
.form-select:hover {
    border-color: var(--color-border-strong);
}

.form-control:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1), 0 1px 2px rgba(0, 0, 0, 0.05);
}

.form-control::placeholder {
    color: var(--color-text-tertiary);
}

.form-text {
    display: block;
    margin-top: var(--spacing-2);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

/* Form Groups */
.mb-3 {
    margin-bottom: var(--spacing-6);
}

/* ============================================================================
   7. TABLE COMPONENTS
   ============================================================================ */

.table-responsive {
    overflow-x: auto;
    border-radius: var(--radius-lg);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.table thead {
    background-color: var(--color-background-secondary);
}

.table thead th {
    padding: var(--spacing-4);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    color: var(--color-text-secondary);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.table tbody tr {
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--transition-fast);
}

.table tbody tr:hover {
    background-color: var(--color-background-secondary);
}

.table tbody td {
    padding: var(--spacing-4);
    vertical-align: middle;
    color: var(--color-text-primary);
}

/* ============================================================================
   8. BADGE COMPONENTS
   ============================================================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    border-radius: var(--radius-full);
}

.badge.bg-success {
    background-color: var(--color-success-100) !important;
    color: var(--color-success-700) !important;
}

.badge.bg-danger {
    background-color: var(--color-error-100) !important;
    color: var(--color-error-700) !important;
}

.badge.bg-warning {
    background-color: var(--color-warning-100) !important;
    color: var(--color-warning-700) !important;
}

.badge.bg-info {
    background-color: var(--color-info-100) !important;
    color: var(--color-info-700) !important;
}

.badge.bg-primary {
    background-color: var(--color-primary-100) !important;
    color: var(--color-primary-700) !important;
}

/* ============================================================================
   9. ALERT COMPONENTS
   ============================================================================ */

.alert {
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
    border: 1px solid;
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

.alert-success {
    background-color: var(--color-success-50);
    border-color: var(--color-success-200);
    color: var(--color-success-800);
}

.alert-danger {
    background-color: var(--color-error-50);
    border-color: var(--color-error-200);
    color: var(--color-error-800);
}

.alert-warning {
    background-color: var(--color-warning-50);
    border-color: var(--color-warning-200);
    color: var(--color-warning-800);
}

.alert-info {
    background-color: var(--color-info-50);
    border-color: var(--color-info-200);
    color: var(--color-info-800);
}

/* ============================================================================
   10. TAB COMPONENTS
   ============================================================================ */

.nav-tabs {
    border-bottom: 1px solid var(--color-border);
    gap: var(--spacing-2);
}

.nav-tabs .nav-link {
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    border: 1px solid transparent;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    background-color: transparent;
    transition: all var(--transition-fast);
}

.nav-tabs .nav-link:hover {
    color: var(--color-text-primary);
    background-color: var(--color-background-secondary);
}

.nav-tabs .nav-link.active {
    color: var(--color-primary-600);
    background-color: var(--color-surface);
    border-color: var(--color-border) var(--color-border) var(--color-surface);
}

.tab-content {
    padding-top: var(--spacing-6);
}

/* ============================================================================
   11. HERO SECTION
   ============================================================================ */

.hero-section {
    padding: var(--spacing-20) 0 var(--spacing-16);
    text-align: center;
}

.display-4 {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-6);
}

.lead {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-regular);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    max-width: 700px;
    margin: 0 auto var(--spacing-8);
}

/* ============================================================================
   12. UTILITY CLASSES
   ============================================================================ */

/* Spacing Utilities */
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--spacing-1) !important; }
.mb-2 { margin-bottom: var(--spacing-2) !important; }
.mb-3 { margin-bottom: var(--spacing-3) !important; }
.mb-4 { margin-bottom: var(--spacing-4) !important; }
.mb-5 { margin-bottom: var(--spacing-5) !important; }
.mb-6 { margin-bottom: var(--spacing-6) !important; }

.mt-0 { margin-top: 0 !important; }
.mt-3 { margin-top: var(--spacing-3) !important; }
.mt-4 { margin-top: var(--spacing-4) !important; }
.mt-5 { margin-top: var(--spacing-5) !important; }

.py-4 { padding-top: var(--spacing-8); padding-bottom: var(--spacing-8); }
.py-5 { padding-top: var(--spacing-12); padding-bottom: var(--spacing-12); }

.p-3 { padding: var(--spacing-6) !important; }
.p-4 { padding: var(--spacing-8) !important; }
.p-5 { padding: var(--spacing-10) !important; }

/* Text Utilities */
.text-center { text-align: center !important; }
.text-end { text-align: right !important; }
.text-start { text-align: left !important; }

.text-muted {
    color: var(--color-text-secondary) !important;
}

.text-primary {
    color: var(--color-primary-600) !important;
}

.text-success {
    color: var(--color-success-600) !important;
}

.text-warning {
    color: var(--color-warning-600) !important;
}

.text-danger {
    color: var(--color-error-600) !important;
}

.text-info {
    color: var(--color-info-600) !important;
}

.fw-semibold {
    font-weight: var(--font-weight-semibold) !important;
}

.fw-bold {
    font-weight: var(--font-weight-bold) !important;
}

.small {
    font-size: var(--font-size-sm) !important;
}

/* Display Utilities */
.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }
.d-none { display: none !important; }
.d-block { display: block !important; }

.flex-column { flex-direction: column !important; }
.flex-wrap { flex-wrap: wrap !important; }
.flex-grow-1 { flex-grow: 1 !important; }

.align-items-center { align-items: center !important; }
.align-items-start { align-items: flex-start !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-between { justify-content: space-between !important; }

.gap-2 { gap: var(--spacing-2) !important; }
.gap-3 { gap: var(--spacing-3) !important; }
.gap-4 { gap: var(--spacing-4) !important; }

/* Background Utilities */
.bg-light {
    background-color: var(--color-background-secondary) !important;
}

.bg-white {
    background-color: var(--color-surface) !important;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, var(--color-primary-500) 0%, var(--color-primary-700) 100%) !important;
}

/* Border Utilities */
.border-0 { border: none !important; }
.border-top { border-top: 1px solid var(--color-border) !important; }

.rounded-circle { border-radius: 50% !important; }

/* Shadow Utilities */
.shadow-sm {
    box-shadow: var(--shadow-sm) !important;
}

.shadow-lg {
    box-shadow: var(--shadow-lg) !important;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.4s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Loading Spinner */
.spinner-border {
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    vertical-align: text-bottom;
    border: 0.2em solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spinner-border 0.75s linear infinite;
}

@keyframes spinner-border {
    to {
        transform: rotate(360deg);
    }
}

/* Progress Bar */
.progress {
    display: flex;
    height: 1rem;
    overflow: hidden;
    background-color: var(--color-neutral-200);
    border-radius: var(--radius-full);
}

.progress-bar {
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow: hidden;
    color: var(--color-text-inverse);
    text-align: center;
    white-space: nowrap;
    background-color: var(--color-primary-600);
    transition: width 0.6s ease;
}

.progress-bar-striped {
    background-image: linear-gradient(
        45deg,
        rgba(255, 255, 255, 0.15) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0.15) 75%,
        transparent 75%,
        transparent
    );
    background-size: 1rem 1rem;
}

.progress-bar-animated {
    animation: progress-bar-stripes 1s linear infinite;
}

@keyframes progress-bar-stripes {
    0% {
        background-position: 1rem 0;
    }
    100% {
        background-position: 0 0;
    }
}

/* ============================================================================
   14. SCROLLBAR STYLING
   ============================================================================ */

::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--color-background-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-neutral-400);
    border-radius: var(--radius-full);
    border: 2px solid var(--color-background-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-neutral-500);
}

/* ============================================================================
   15. RESPONSIVE BREAKPOINTS
   ============================================================================ */

/* Mobile First Approach */
@media (min-width: 640px) {
    /* sm */
}

@media (min-width: 768px) {
    /* md */
    .display-4 {
        font-size: var(--font-size-6xl);
    }
}

@media (min-width: 1024px) {
    /* lg */
}

@media (min-width: 1280px) {
    /* xl */
}

@media (max-width: 768px) {
    .display-4 {
        font-size: var(--font-size-4xl);
    }

    .lead {
        font-size: var(--font-size-lg);
    }

    .hero-section {
        padding: var(--spacing-12) 0 var(--spacing-10);
    }

    .oauth-btn-container {
        flex-direction: column;
    }

    .oauth-btn {
        width: 100%;
        justify-content: center;
    }

    .logo-hero {
        width: 60px;
        height: 60px;
        font-size: var(--font-size-4xl);
    }

    .container {
        padding-left: var(--spacing-4);
        padding-right: var(--spacing-4);
    }
}

/* ============================================================================
   16. PRINT STYLES
   ============================================================================ */

@media print {
    .navbar,
    .btn,
    footer {
        display: none !important;
    }
}

/* ============================================================================
   17. ACCESSIBILITY
   ============================================================================ */

/* Focus visible for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--color-primary-500);
    outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================================================
   18. BOOTSTRAP GRID COMPATIBILITY
   ============================================================================ */

.row {
    display: flex;
    flex-wrap: wrap;
    margin-left: calc(-1 * var(--spacing-3));
    margin-right: calc(-1 * var(--spacing-3));
}

.col,
[class*="col-"] {
    padding-left: var(--spacing-3);
    padding-right: var(--spacing-3);
}

.g-4 > * {
    padding: var(--spacing-4);
}

/* ============================================================================
   19. CUSTOM COMPONENT OVERRIDES
   ============================================================================ */

/* User Avatar */
#user-avatar {
    width: 40px;
    height: 40px;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-700));
}

/* Sync Action Card */
#sync-progress-bar .progress {
    height: 25px;
    background-color: rgba(255, 255, 255, 0.2);
}

/* Chat Messages */
#chat-messages {
    padding: var(--spacing-4);
}

/* Example Query Buttons in Chat */
.example-query {
    font-size: var(--font-size-xs);
    padding: var(--spacing-2) var(--spacing-4);
    border-color: var(--color-border-strong);
    color: var(--color-text-secondary);
}

.example-query:hover {
    border-color: var(--color-primary-300);
    background-color: var(--color-primary-50);
    color: var(--color-primary-700);
}

/* Integration Status Icons */
.fs-2 {
    font-size: var(--font-size-3xl) !important;
}

/* Navbar Toggle (Mobile) */
.navbar-toggler {
    padding: var(--spacing-2);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 3px var(--color-primary-200);
}

/* ============================================================================
   20. TESTING BANNER
   ============================================================================ */

.testing-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 32px;
    background: linear-gradient(90deg, #DC2626, #EF4444, #DC2626);
    overflow: hidden;
    z-index: 9999;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.2);
}

.testing-banner-content {
    display: flex;
    align-items: center;
    height: 100%;
    animation: scroll-left 8s linear infinite;
}

.testing-banner-text {
    display: inline-flex;
    align-items: center;
    gap: 40px;
    white-space: nowrap;
    color: #FFFFFF;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding-right: 40px;
}

.testing-banner-text i {
    color: #FEF08A;
    margin: 0 8px;
}

@keyframes scroll-left {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* Add padding to body to prevent content from being hidden behind banner */
body {
    padding-bottom: 40px;
}

/* Dark mode adjustments for testing banner */
@media (prefers-color-scheme: dark) {
    .testing-banner {
        background: linear-gradient(90deg, #B91C1C, #DC2626, #B91C1C);
    }

    .testing-banner-text {
        color: #FFFFFF;
    }

    .testing-banner-text i {
        color: #FDE047;
    }

    /* NAVBAR - Dark mode override (must come after light mode styles) */
    .navbar {
        background-color: #0F172A !important;
        border-bottom: 1px solid #475569 !important;
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3) !important;
    }

    .navbar-brand {
        color: #FFFFFF !important;
    }

    .navbar-brand span {
        color: #FFFFFF !important;
    }

    .navbar-brand .logo-icon i {
        color: #C7D2FE !important;
    }

    .navbar-nav .nav-link {
        color: #FFFFFF !important;
    }

    .navbar-nav .nav-link i {
        color: #FFFFFF !important;
    }

    /* User email display override for dark mode */
    .navbar .user-email-display,
    .navbar .user-email-display.text-muted,
    .navbar .text-muted,
    .navbar-nav .text-muted,
    .user-email-display.text-muted {
        color: #E2E8F0 !important;
    }

    .navbar .user-email-display span,
    .navbar .user-email-display #nav-user-email,
    #nav-user-email {
        color: #E2E8F0 !important;
    }

    .navbar .user-email-display i,
    .navbar .bi-person-circle {
        color: #E2E8F0 !important;
    }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    .testing-banner-content {
        animation: none;
    }

    .testing-banner-text {
        padding-left: 20px;
    }
}

/* ============================================================================
   CHAT MARKDOWN STYLING
   ============================================================================ */

/* Style markdown content in chat messages */
.chat-message-content {
    line-height: 1.6;
}

.chat-message-content h1,
.chat-message-content h2,
.chat-message-content h3,
.chat-message-content h4,
.chat-message-content h5,
.chat-message-content h6 {
    margin-top: 0.5em;
    margin-bottom: 0.3em;
    font-weight: 600;
}

.chat-message-content h1 { font-size: 1.3em; }
.chat-message-content h2 { font-size: 1.2em; }
.chat-message-content h3 { font-size: 1.1em; }

.chat-message-content p {
    margin-bottom: 0.5em;
}

.chat-message-content p:last-child {
    margin-bottom: 0;
}

.chat-message-content ul,
.chat-message-content ol {
    margin-bottom: 0.5em;
    padding-left: 1.5em;
}

.chat-message-content li {
    margin-bottom: 0.25em;
}

.chat-message-content strong {
    font-weight: 600;
}

.chat-message-content em {
    font-style: italic;
}

.chat-message-content code {
    background-color: rgba(0, 0, 0, 0.1);
    padding: 0.1em 0.3em;
    border-radius: 3px;
    font-size: 0.9em;
}

.chat-message-content blockquote {
    border-left: 3px solid var(--color-primary-400);
    margin: 0.5em 0;
    padding-left: 1em;
    color: var(--color-text-secondary);
}

/* Clickable stat card styling */
.stat-card.clickable {
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card.clickable:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* Dark mode markdown styles */
@media (prefers-color-scheme: dark) {
    .chat-message-content code {
        background-color: rgba(255, 255, 255, 0.15);
    }

    .chat-message-content blockquote {
        border-left-color: var(--color-primary-300);
    }
}

/* ============================================================================
   21. FEEDBACK BUTTON
   ============================================================================ */

.feedback-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    border-radius: 50px;
    padding: 12px 20px;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.4);
    transition: all 0.3s ease;
}

.feedback-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.5);
}

.feedback-btn i {
    margin-right: 6px;
}

@media (max-width: 576px) {
    .feedback-btn {
        padding: 10px 16px;
        font-size: 14px;
    }
}

/* ============================================================================
   END OF DESIGN SYSTEM
   ============================================================================ */