/* assets/css/main.css */

/* CSS Custom Properties (Variables) */
:root {
    /* Color Palette */
    --primary-color: #1e3a8a;          /* Deep Blue */
    --primary-dark: #1e40af;           /* Darker Blue */
    --primary-light: #3b82f6;          /* Lighter Blue */
    --secondary-color: #0d9488;        /* Vibrant Teal */
    --secondary-light: #14b8a6;        /* Light Teal */
    --accent-color: #06b6d4;           /* Cyan Accent */
    
    /* Grays - Light Mode */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Status Colors */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --info-color: #3b82f6;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    /* Background Colors - Proper dark theme */
    --gray-50: #0a0e1a;    /* Darkest background */
    --gray-100: #1a1f2e;   /* Card backgrounds */
    --gray-200: #2d3748;   /* Elevated surfaces */
    --gray-300: #4a5568;   /* Borders, dividers */
    --gray-400: #718096;   /* Disabled text */
    --gray-500: #a0aec0;   /* Secondary text */
    --gray-600: #cbd5e0;   /* Primary text */
    --gray-700: #e2e8f0;   /* High contrast text */
    --gray-800: #f7fafc;   /* Highest contrast */
    --gray-900: #ffffff;   /* Pure white for emphasis */
    
    /* Enhanced shadows with proper opacity for dark backgrounds */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.6);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.7), 0 1px 2px 0 rgba(0, 0, 0, 0.6);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.7), 0 2px 4px -1px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.8), 0 4px 6px -2px rgba(0, 0, 0, 0.7);
    
    /* Component-specific variables */
    --card-bg: #1a1f2e;
    --card-border: #2d3748;
    --input-bg: #2d3748;
    --input-border: #4a5568;
    --hover-bg: #2d3748;
    --active-bg: #4a5568;
}
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    
    /* Borders */
    --border-radius-sm: 0.375rem;
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
    
    /* Header Heights */
    --header-height: 70px;
    --alert-bar-height: 45px;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-4);
}

/* Alert Bar */
.alert-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-3) 0;
    font-size: var(--font-size-sm);
    animation: slideDown var(--transition-normal);
}

.alert-bar.alert-info {
    background: linear-gradient(135deg, var(--info-color), var(--primary-light));
    color: white;
}

.alert-bar.alert-success {
    background: linear-gradient(135deg, var(--success-color), #34d399);
    color: white;
}

.alert-bar.alert-warning {
    background: linear-gradient(135deg, var(--warning-color), #fbbf24);
    color: white;
}

.alert-bar.alert-error {
    background: linear-gradient(135deg, var(--error-color), #f87171);
    color: white;
}

.alert-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

.alert-content > div:first-child {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

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

.alert-text strong {
    margin-right: var(--spacing-2);
}

.alert-close {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: var(--border-radius);
    transition: background-color var(--transition-fast);
}

.alert-close:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    transition: all var(--transition-normal);
    height: var(--header-height);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.header.hidden {
    transform: translateY(-100%);
}

body:has(.alert-bar) .header {
    top: var(--alert-bar-height);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    position: relative;
}

/* Brand */
.navbar-brand .brand-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--gray-800);
    font-weight: 700;
    font-size: var(--font-size-xl);
    gap: var(--spacing-3);
}

.brand-logo {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
}

.brand-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation Menu */
.navbar-menu {
    display: flex;
    align-items: center;
}

.navbar-nav {
    display: flex;
    align-items: center;
    list-style: none;
    gap: var(--spacing-2);
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
    background-color: var(--gray-100);
}

.nav-link.btn-outline {
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.nav-link.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
}

.nav-link.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: var(--shadow);
}

.nav-link.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

/* User Avatar */
.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--gray-200);
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Badge */
.badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--error-color);
    color: white;
    font-size: var(--font-size-xs);
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
}

.dropdown-toggle .fas.fa-chevron-down {
    transition: transform var(--transition-fast);
    font-size: var(--font-size-xs);
}

.dropdown-toggle.active .fas.fa-chevron-down {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    min-width: 200px;
    padding: var(--spacing-2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 1000;
}

.dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    text-decoration: none;
    color: var(--gray-700);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
}

.dropdown-item:hover {
    background-color: var(--gray-100);
    color: var(--primary-color);
}

.dropdown-divider {
    height: 1px;
    background: var(--gray-200);
    margin: var(--spacing-2) 0;
}

/* Mobile Menu Toggle */
.navbar-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: var(--border-radius);
}

.navbar-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: all var(--transition-fast);
    border-radius: 1px;
}

.navbar-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.navbar-toggle.active span:nth-child(2) {
    opacity: 0;
}

.navbar-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Main Content */
.main-content {
    min-height: 100vh;
}

body:has(.alert-bar) .main-content {
    padding-top: calc(var(--header-height) + var(--alert-bar-height));
}

/* Animations */
@keyframes slideDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-toggle {
        display: flex;
    }
    
    .navbar-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        border-top: 1px solid var(--gray-200);
        box-shadow: var(--shadow-lg);
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .navbar-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .navbar-nav {
        flex-direction: column;
        padding: var(--spacing-4);
        gap: var(--spacing-2);
        width: 100%;
    }
    
    .nav-item {
        width: 100%;
    }
    
    .nav-link {
        justify-content: flex-start;
        width: 100%;
        padding: var(--spacing-3) var(--spacing-4);
    }
    
    .dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        padding-left: var(--spacing-6);
        background: var(--gray-50);
        margin-top: var(--spacing-2);
        border-radius: var(--border-radius);
    }
    
    .user-name {
        display: none;
    }
    
    .container {
        padding: 0 var(--spacing-3);
    }
}

/* Theme Transition Styles */
* {
    transition: background-color var(--transition-normal), 
                color var(--transition-normal), 
                border-color var(--transition-normal),
                box-shadow var(--transition-normal);
}

/* Theme Toggle Styles */
.theme-icon {
    transition: transform var(--transition-fast);
}

.dropdown-item:hover .theme-icon {
    transform: scale(1.1);
}

/* Theme toggle specific styling */
.dropdown-item[onclick*="toggleTheme"] {
    position: relative;
}

.dropdown-item[onclick*="toggleTheme"]:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.dropdown-item[onclick*="toggleTheme"]:hover .theme-icon {
    color: white;
    transform: scale(1.1) rotate(15deg);
}

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

/* Body and main background */
[data-theme="dark"] body {
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 50%, var(--gray-200) 100%);
    color: var(--gray-600);
}

/* Cards and Containers */
[data-theme="dark"] .card,
[data-theme="dark"] .dashboard-card,
[data-theme="dark"] .stats-card,
[data-theme="dark"] .metric-card,
[data-theme="dark"] .widget,
[data-theme="dark"] .panel {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--gray-600);
}

[data-theme="dark"] .card-header,
[data-theme="dark"] .panel-header {
    background: var(--gray-200);
    border-bottom: 1px solid var(--card-border);
    color: var(--gray-700);
}

/* Buttons */
[data-theme="dark"] .btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-color: var(--primary-color);
    color: white;
}

[data-theme="dark"] .btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    transform: translateY(-1px);
}

[data-theme="dark"] .btn-secondary {
    background: var(--gray-200);
    border-color: var(--gray-300);
    color: var(--gray-700);
}

[data-theme="dark"] .btn-secondary:hover {
    background: var(--gray-300);
    color: var(--gray-800);
}

[data-theme="dark"] .btn-outline {
    background: transparent;
    border-color: var(--gray-300);
    color: var(--gray-600);
}

[data-theme="dark"] .btn-outline:hover {
    background: var(--gray-200);
    color: var(--gray-700);
}

/* Forms and Inputs */
[data-theme="dark"] input,
[data-theme="dark"] textarea,
[data-theme="dark"] select {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--gray-700);
}

[data-theme="dark"] input:focus,
[data-theme="dark"] textarea:focus,
[data-theme="dark"] select:focus {
    border-color: var(--primary-color);
    background: var(--gray-200);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
    color: var(--gray-400);
}

[data-theme="dark"] label,
[data-theme="dark"] .form-label {
    color: var(--gray-600);
}

/* Navigation and Dropdowns */
[data-theme="dark"] .header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--card-border);
}

[data-theme="dark"] .nav-link {
    color: var(--gray-500);
}

[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link.active {
    color: var(--gray-700);
    background: var(--hover-bg);
}

[data-theme="dark"] .dropdown-menu,
[data-theme="dark"] .nav-dropdown {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .dropdown-item {
    color: var(--gray-600);
}

[data-theme="dark"] .dropdown-item:hover {
    background: var(--hover-bg);
    color: var(--gray-700);
}

/* Tables */
[data-theme="dark"] table {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
}

[data-theme="dark"] th {
    background: var(--gray-200);
    color: var(--gray-700);
    border-bottom: 1px solid var(--card-border);
}

[data-theme="dark"] td {
    border-bottom: 1px solid var(--card-border);
    color: var(--gray-600);
}

[data-theme="dark"] tr:hover {
    background: var(--hover-bg);
}

[data-theme="dark"] tr:nth-child(even) {
    background: rgba(45, 55, 72, 0.3);
}

/* Modals */
[data-theme="dark"] .modal-content {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
}

[data-theme="dark"] .modal-header {
    background: var(--gray-200);
    border-bottom: 1px solid var(--card-border);
    color: var(--gray-700);
}

[data-theme="dark"] .modal-footer {
    background: var(--gray-200);
    border-top: 1px solid var(--card-border);
}

/* Alerts and Notifications */
[data-theme="dark"] .alert {
    border-left-width: 4px;
}

[data-theme="dark"] .alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-left-color: var(--success-color);
    color: #34d399;
}

[data-theme="dark"] .alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-left-color: var(--warning-color);
    color: #fbbf24;
}

[data-theme="dark"] .alert-error {
    background: rgba(239, 68, 68, 0.1);
    border-left-color: var(--error-color);
    color: #f87171;
}

[data-theme="dark"] .alert-info {
    background: rgba(59, 130, 246, 0.1);
    border-left-color: var(--info-color);
    color: #60a5fa;
}

/* Progress bars */
[data-theme="dark"] .progress {
    background: var(--gray-200);
}

[data-theme="dark"] .progress-bar {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
}

/* Badges and Tags */
[data-theme="dark"] .badge {
    background: var(--gray-200);
    color: var(--gray-700);
}

[data-theme="dark"] .badge-primary {
    background: var(--primary-color);
    color: white;
}

[data-theme="dark"] .badge-success {
    background: var(--success-color);
    color: white;
}

[data-theme="dark"] .badge-warning {
    background: var(--warning-color);
    color: white;
}

[data-theme="dark"] .badge-error {
    background: var(--error-color);
    color: white;
}

/* Sidebar */
[data-theme="dark"] .sidebar {
    background: var(--card-bg);
    border-right: 1px solid var(--card-border);
}

[data-theme="dark"] .sidebar-item {
    color: var(--gray-500);
}

[data-theme="dark"] .sidebar-item:hover,
[data-theme="dark"] .sidebar-item.active {
    background: var(--hover-bg);
    color: var(--gray-700);
}

/* Dashboard specific styles */
[data-theme="dark"] .dashboard-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

[data-theme="dark"] .stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
}

[data-theme="dark"] .stat-value {
    color: var(--gray-800);
}

[data-theme="dark"] .stat-label {
    color: var(--gray-500);
}

/* Charts and graphs */
[data-theme="dark"] .chart-container {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
}

/* Scrollbars */
[data-theme="dark"] ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

[data-theme="dark"] ::-webkit-scrollbar-track {
    background: var(--gray-200);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: 4px;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* Text colors */
[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
    color: var(--gray-700);
}

[data-theme="dark"] p,
[data-theme="dark"] span,
[data-theme="dark"] div {
    color: var(--gray-600);
}

[data-theme="dark"] .text-muted {
    color: var(--gray-400);
}

[data-theme="dark"] .text-primary {
    color: var(--primary-light);
}

[data-theme="dark"] .text-success {
    color: #34d399;
}

[data-theme="dark"] .text-warning {
    color: #fbbf24;
}

[data-theme="dark"] .text-error {
    color: #f87171;
}

/* Links */
[data-theme="dark"] a {
    color: var(--primary-light);
}

[data-theme="dark"] a:hover {
    color: var(--primary-color);
}

/* Borders and dividers */
[data-theme="dark"] .border,
[data-theme="dark"] .border-top,
[data-theme="dark"] .border-bottom,
[data-theme="dark"] .border-left,
[data-theme="dark"] .border-right {
    border-color: var(--card-border);
}

[data-theme="dark"] hr {
    border-color: var(--card-border);
}