/* ============================================
   Enhanced Theming System with Dark Mode Support
   ============================================ */

/* Light Theme (Default) */
:root {
    /* Backgrounds */
    --bg-body: #f8fafc;
    --bg-card: #ffffff;
    --bg-input: #f9fafb;
    --bg-hover: #f3f4f6;
    --bg-glass: rgba(255, 255, 255, 0.8);
    --bg-overlay: rgba(0, 0, 0, 0.5);

    /* Legacy variable names from style.css - for compatibility */
    --background-color: #f8fafc;
    --card-background: #ffffff;

    /* Text Colors */
    --text-main: #1f2937;
    --text-secondary: #4b5563;
    --text-muted: #6b7280;
    --text-light: #9ca3af;
    --text-inverse: #ffffff;

    /* Legacy variable name */
    --text-color: #1f2937;

    /* Borders */
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    --border-dark: #d1d5db;

    /* Primary Colors */
    --primary-color: #667eea;
    --primary-hover: #5a67d8;
    --primary-active: #4c51bf;
    --primary-light: #e0e7ff;
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Status Colors */
    --success-bg: #d1fae5;
    --success-text: #065f46;
    --success-border: #10b981;
    --success-color: #10b981;

    --error-bg: #fef2f2;
    --error-text: #991b1b;
    --error-border: #ef4444;
    --error-color: #ef4444;

    --warning-bg: #fef3c7;
    --warning-text: #92400e;
    --warning-border: #f59e0b;

    --info-bg: #dbeafe;
    --info-text: #1e40af;
    --info-border: #3b82f6;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ============================================
   Dark Theme - Enhanced with Better Contrast
   ============================================ */
[data-theme="dark"] {
    /* Backgrounds - Deeper, richer blacks */
    --bg-body: #0a0e1a;
    --bg-card: #1a1f2e;
    --bg-input: #2d3548;
    --bg-hover: #252c3d;
    --bg-glass: rgba(26, 31, 46, 0.8);
    --bg-overlay: rgba(0, 0, 0, 0.7);

    /* Legacy variable names - for compatibility */
    --background-color: #0a0e1a;
    --card-background: #1a1f2e;

    /* Text Colors - Higher contrast */
    --text-main: #f8fafc;
    --text-secondary: #e2e8f0;
    --text-muted: #94a3b8;
    --text-light: #64748b;
    --text-inverse: #0f172a;

    /* Legacy variable name */
    --text-color: #f8fafc;

    /* Borders - Subtle but visible */
    --border-color: #2d3548;
    --border-light: #3d4556;
    --border-dark: #1e2432;

    /* Primary Colors - Vibrant purples for dark mode */
    --primary-color: #8b5cf6;
    --primary-hover: #7c3aed;
    --primary-active: #6d28d9;
    --primary-light: rgba(139, 92, 246, 0.1);
    --primary-gradient: linear-gradient(135deg, #8b5cf6 0%, #6d28d9 100%);

    /* Shadows - Stronger for depth */
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.6), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.7), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.8), 0 10px 10px -5px rgba(0, 0, 0, 0.5);

    /* Status Colors - Adjusted for dark background */
    --success-bg: rgba(16, 185, 129, 0.15);
    --success-text: #6ee7b7;
    --success-border: #059669;
    --success-color: #10b981;

    --error-bg: rgba(239, 68, 68, 0.15);
    --error-text: #fca5a5;
    --error-border: #dc2626;
    --error-color: #ef4444;

    --warning-bg: rgba(245, 158, 11, 0.15);
    --warning-text: #fcd34d;
    --warning-border: #f59e0b;

    --info-bg: rgba(59, 130, 246, 0.15);
    --info-text: #93c5fd;
    --info-border: #3b82f6;
}

/* ============================================
   Midnight Theme - Cool Blue Tones
   ============================================ */
[data-theme="midnight"] {
    /* Backgrounds - Deep blue-black tones */
    --bg-body: #0c1222;
    --bg-card: #1a2332;
    --bg-input: #283548;
    --bg-hover: #1f2d3f;
    --bg-glass: rgba(26, 35, 50, 0.8);
    --bg-overlay: rgba(0, 0, 0, 0.7);

    /* Legacy variable names - for compatibility */
    --background-color: #0c1222;
    --card-background: #1a2332;

    /* Text Colors */
    --text-main: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-light: #64748b;
    --text-inverse: #0f172a;

    /* Legacy variable name */
    --text-color: #f1f5f9;

    /* Borders */
    --border-color: #283548;
    --border-light: #334155;
    --border-dark: #1e293b;

    /* Primary Colors - Cyan/Blue accent */
    --primary-color: #06b6d4;
    --primary-hover: #0891b2;
    --primary-active: #0e7490;
    --primary-light: rgba(6, 182, 212, 0.1);
    --primary-gradient: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);

    /* Shadows */
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.6), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.7), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.8), 0 10px 10px -5px rgba(0, 0, 0, 0.5);

    /* Status Colors */
    --success-bg: rgba(16, 185, 129, 0.15);
    --success-text: #6ee7b7;
    --success-border: #059669;
    --success-color: #10b981;

    --error-bg: rgba(239, 68, 68, 0.15);
    --error-text: #fca5a5;
    --error-border: #dc2626;
    --error-color: #ef4444;

    --warning-bg: rgba(245, 158, 11, 0.15);
    --warning-text: #fcd34d;
    --warning-border: #f59e0b;

    --info-bg: rgba(59, 130, 246, 0.15);
    --info-text: #93c5fd;
    --info-border: #3b82f6;
}

/* ============================================
   Global Theme Styles
   ============================================ */

body {
    background-color: var(--bg-body);
    color: var(--text-main);
}

/* Background pattern for dark themes */
[data-theme="dark"] body,
[data-theme="midnight"] body {
    background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 20px 20px;
}

/* Cards and Containers */
.card,
.bg-white,
.stat-card,
.setting-card,
.file-preview-wrapper {
    background-color: var(--bg-card) !important;
    color: var(--text-main);
    border-color: var(--border-color);
}

/* Add subtle glow effect to cards in dark mode */
[data-theme="dark"] .card,
[data-theme="dark"] .bg-white,
[data-theme="dark"] .stat-card,
[data-theme="dark"] .setting-card,
[data-theme="midnight"] .card,
[data-theme="midnight"] .bg-white,
[data-theme="midnight"] .stat-card,
[data-theme="midnight"] .setting-card {
    background: var(--bg-card) !important;
    background-color: var(--bg-card) !important;
    color: var(--text-main) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: var(--shadow-md), 0 0 0 1px rgba(139, 92, 246, 0.05) !important;
}

/* Text Color Classes */
.text-gray-900,
.text-gray-800 {
    color: var(--text-main) !important;
}

.text-gray-700,
.text-gray-600 {
    color: var(--text-secondary) !important;
}

.text-gray-500,
.text-gray-400 {
    color: var(--text-muted) !important;
}

.text-gray-300 {
    color: var(--text-light) !important;
}

/* Border Color Classes */
.border-gray-200,
.border-gray-300 {
    border-color: var(--border-color) !important;
}

/* Form Elements */
input,
select,
textarea,
.main-input-field,
.admin-search-input {
    background-color: var(--bg-input) !important;
    color: var(--text-main) !important;
    border-color: var(--border-color) !important;
}

/* Enhanced focus state for dark mode */
[data-theme="dark"] input:focus,
[data-theme="dark"] select:focus,
[data-theme="dark"] textarea:focus,
[data-theme="midnight"] input:focus,
[data-theme="midnight"] select:focus,
[data-theme="midnight"] textarea:focus {
    border-color: var(--primary-color) !important;
    box-shadow: 0 0 0 3px var(--primary-light) !important;
}

/* Placeholder text */
input::placeholder,
textarea::placeholder {
    color: var(--text-light);
    opacity: 0.7;
}

/* Dropdowns */
.dropdown-menu,
.user-dropdown {
    background-color: var(--bg-card) !important;
    border-color: var(--border-color) !important;
    box-shadow: var(--shadow-lg) !important;
}

.dropdown-item {
    color: var(--text-main) !important;
}

.dropdown-item:hover {
    background-color: var(--bg-hover) !important;
}

/* Header Elements - User Menu */
[data-theme="dark"] .user-avatar-btn,
[data-theme="midnight"] .user-avatar-btn {
    background: var(--bg-card) !important;
    border-color: var(--border-color) !important;
    color: var(--text-main) !important;
}

[data-theme="dark"] .user-avatar-btn:hover,
[data-theme="midnight"] .user-avatar-btn:hover {
    background: var(--bg-hover) !important;
    border-color: var(--border-light) !important;
}

/* Tables */
[data-theme="dark"] th,
[data-theme="midnight"] th {
    background-color: var(--bg-input) !important;
    color: var(--text-secondary) !important;
}

[data-theme="dark"] td,
[data-theme="midnight"] td {
    border-bottom-color: var(--border-color) !important;
}

/* Code Blocks */
[data-theme="dark"] pre,
[data-theme="midnight"] pre {
    background-color: var(--bg-input) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] code,
[data-theme="midnight"] code {
    background-color: var(--bg-input);
    color: var(--primary-color);
}

/* Links */
a {
    color: var(--primary-color);
}

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

/* Upload Zone */
[data-theme="dark"] .upload-drop-zone,
[data-theme="midnight"] .upload-drop-zone {
    background-color: var(--bg-input) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .upload-drop-zone:hover,
[data-theme="dark"] .upload-drop-zone.dragover,
[data-theme="midnight"] .upload-drop-zone:hover,
[data-theme="midnight"] .upload-drop-zone.dragover {
    background-color: var(--primary-light) !important;
    border-color: var(--primary-color) !important;
}

/* Navigation Links */
[data-theme="dark"] .nav-link,
[data-theme="midnight"] .nav-link {
    color: var(--text-secondary);
}

[data-theme="dark"] .nav-link:hover,
[data-theme="midnight"] .nav-link:hover {
    background-color: var(--bg-hover);
    color: var(--text-main);
}

/* Tabs */
[data-theme="dark"] .nav-tab,
[data-theme="midnight"] .nav-tab {
    background-color: transparent;
    color: var(--text-muted);
}

[data-theme="dark"] .nav-tab:hover,
[data-theme="midnight"] .nav-tab:hover {
    background-color: var(--bg-hover);
    color: var(--text-main);
}

[data-theme="dark"] .nav-tab.active,
[data-theme="midnight"] .nav-tab.active {
    background-color: var(--bg-card);
    color: var(--primary-color);
}

/* Badges */
[data-theme="dark"] .badge-tg,
[data-theme="midnight"] .badge-tg {
    background: rgba(59, 130, 246, 0.2);
    color: var(--info-text);
}

[data-theme="dark"] .badge-pwd,
[data-theme="midnight"] .badge-pwd {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning-text);
}

/* Theme Toggle Button */
.theme-toggle {
    color: var(--text-muted);
    transition: color 0.3s ease, transform 0.2s ease;
}

.theme-toggle:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

[data-theme="dark"] .sun-icon,
[data-theme="midnight"] .sun-icon {
    display: block !important;
}

[data-theme="dark"] .moon-icon,
[data-theme="midnight"] .moon-icon {
    display: none !important;
}

/* Smooth Theme Transitions */
*,
*::before,
*::after {
    transition-property: background-color, border-color, color, box-shadow, fill, stroke;
    transition-duration: 0.3s;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Disable transitions for specific interactive elements */
button,
input,
select,
textarea,
a {
    transition-property: background-color, border-color, color, box-shadow, transform, opacity;
    transition-duration: 0.2s;
}

/* Page Title */
[data-theme="dark"] .page-title,
[data-theme="midnight"] .page-title {
    color: var(--text-main);
}

[data-theme="dark"] .page-subtitle,
[data-theme="midnight"] .page-subtitle {
    color: var(--text-muted);
}

/* Footer */
[data-theme="dark"] .main-footer,
[data-theme="midnight"] .main-footer {
    color: var(--text-muted);
}

/* Scrollbar Styling for Dark Themes */
[data-theme="dark"] ::-webkit-scrollbar,
[data-theme="midnight"] ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

[data-theme="dark"] ::-webkit-scrollbar-track,
[data-theme="midnight"] ::-webkit-scrollbar-track {
    background: var(--bg-body);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb,
[data-theme="midnight"] ::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover,
[data-theme="midnight"] ::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* Selection */
[data-theme="dark"] ::selection,
[data-theme="midnight"] ::selection {
    background-color: var(--primary-color);
    color: var(--text-inverse);
}

/* ============================================
   Enhanced Visual Effects for Dark Themes
   ============================================ */

/* Page Title with Gradient Effect */
[data-theme="dark"] .page-title,
[data-theme="midnight"] .page-title {
    background: linear-gradient(135deg, #f8fafc 0%, #a78bfa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

/* Subtitle Enhancement */
[data-theme="dark"] .page-subtitle,
[data-theme="midnight"] .page-subtitle {
    color: var(--text-muted);
    opacity: 0.9;
}

/* Enhanced Card Styles */
[data-theme="dark"] .card,
[data-theme="midnight"] .card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg),
        0 0 0 1px rgba(139, 92, 246, 0.1),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.05);
}

/* Navigation Tabs Enhanced */
[data-theme="dark"] .nav-tab,
[data-theme="midnight"] .nav-tab {
    background-color: rgba(255, 255, 255, 0.03);
    color: var(--text-muted);
    border: 1px solid transparent;
    position: relative;
}

[data-theme="dark"] .nav-tab:hover,
[data-theme="midnight"] .nav-tab:hover {
    background-color: rgba(139, 92, 246, 0.1);
    color: var(--text-main);
    border-color: rgba(139, 92, 246, 0.2);
}

[data-theme="dark"] .nav-tab.active,
[data-theme="midnight"] .nav-tab.active {
    background: var(--bg-card);
    color: var(--primary-color);
    border-color: var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(139, 92, 246, 0.1);
}

/* Input Fields Enhancement */
[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea,
[data-theme="midnight"] input,
[data-theme="midnight"] select,
[data-theme="midnight"] textarea {
    background-color: var(--bg-input) !important;
    color: var(--text-main) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] input:hover,
[data-theme="midnight"] input:hover {
    border-color: var(--border-light) !important;
}

[data-theme="dark"] input:focus,
[data-theme="midnight"] input:focus {
    background-color: var(--bg-hover) !important;
    border-color: var(--primary-color) !important;
    box-shadow: 0 0 0 3px var(--primary-light),
        inset 0 1px 2px rgba(0, 0, 0, 0.2) !important;
}

/* Input Placeholder Enhancement */
[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder,
[data-theme="midnight"] input::placeholder,
[data-theme="midnight"] textarea::placeholder {
    color: var(--text-light);
    opacity: 0.5;
}

/* Button Enhancement */
[data-theme="dark"] .shrink-button,
[data-theme="dark"] .btn-primary,
[data-theme="midnight"] .shrink-button,
[data-theme="midnight"] .btn-primary {
    background: var(--primary-gradient);
    box-shadow: 0 4px 14px 0 rgba(139, 92, 246, 0.4),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(139, 92, 246, 0.3);
}

[data-theme="dark"] .shrink-button:hover,
[data-theme="dark"] .btn-primary:hover,
[data-theme="midnight"] .shrink-button:hover,
[data-theme="midnight"] .btn-primary:hover {
    box-shadow: 0 6px 20px 0 rgba(139, 92, 246, 0.5),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

/* Details/Summary Enhancement */
[data-theme="dark"] details summary,
[data-theme="midnight"] details summary {
    color: var(--text-secondary);
}

[data-theme="dark"] details[open] summary,
[data-theme="midnight"] details[open] summary {
    color: var(--primary-color);
}

/* Link Result Enhancement */
[data-theme="dark"] .link-result-wrapper,
[data-theme="midnight"] .link-result-wrapper {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .short-link-highlight,
[data-theme="midnight"] .short-link-highlight {
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(139, 92, 246, 0.3);
}

/* Copy Button Enhancement */
[data-theme="dark"] .copy-btn,
[data-theme="midnight"] .copy-btn {
    background: var(--primary-gradient);
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.3);
}

[data-theme="dark"] .copy-btn:hover,
[data-theme="midnight"] .copy-btn:hover {
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.4);
}

/* Stat Cards Enhancement */
[data-theme="dark"] .stat-card,
[data-theme="midnight"] .stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md),
        inset 0 1px 0 0 rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .stat-number,
[data-theme="midnight"] .stat-number {
    color: var(--primary-color);
    text-shadow: 0 0 20px rgba(139, 92, 246, 0.3);
}

/* Edit Code Box Enhancement */
[data-theme="dark"] .edit-code-box,
[data-theme="midnight"] .edit-code-box {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.3);
    color: var(--warning-text);
}

/* Feedback Messages Enhancement */
[data-theme="dark"] .feedback.success,
[data-theme="midnight"] .feedback.success {
    background: var(--success-bg);
    border-color: var(--success-border);
    color: var(--success-text);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.2);
}

[data-theme="dark"] .feedback.error,
[data-theme="midnight"] .feedback.error {
    background: var(--error-bg);
    border-color: var(--error-border);
    color: var(--error-text);
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.2);
}

/* Brand Logo Enhancement */
[data-theme="dark"] .brand,
[data-theme="midnight"] .brand {
    color: var(--text-main);
    transition: all 0.3s ease;
}

[data-theme="dark"] .brand:hover,
[data-theme="midnight"] .brand:hover {
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(139, 92, 246, 0.5);
}

/* Prevent white flash on page load */
[data-theme="dark"],
[data-theme="midnight"] {
    color-scheme: dark;
}

/* Improved contrast for better readability */
[data-theme="dark"] strong,
[data-theme="dark"] b,
[data-theme="midnight"] strong,
[data-theme="midnight"] b {
    color: var(--text-main);
    font-weight: 600;
}

/* Subtle animation for theme switcher */
.theme-toggle {
    position: relative;
    overflow: hidden;
}

.theme-toggle::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle, var(--primary-color) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.theme-toggle:hover::after {
    opacity: 0.1;
}

/* Smooth glow effect on hover for interactive elements */
[data-theme="dark"] button:not(:disabled):hover,
[data-theme="dark"] .nav-link:hover,
[data-theme="midnight"] button:not(:disabled):hover,
[data-theme="midnight"] .nav-link:hover {
    filter: brightness(1.1);
}