/**
 * KalviYogi - Premium Video Platform Styles
 * Modern, Dark-First Design System
 */

/* ========================================
   CSS Variables & Theme
   ======================================== */
:root {
    /* Dark Theme (Default) */
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-tertiary: #18181b;
    --bg-card: #1c1c1f;
    --bg-elevated: #222225;
    --bg-hover: #2a2a2e;
    
    /* Borders */
    --border-subtle: #27272a;
    --border-default: #3f3f46;
    --border-focus: #6366f1;
    
    /* Text */
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    --text-muted: #52525b;
    
    /* Accent Colors - Gold Theme */
    --accent-primary: #D4AF37;
    --accent-primary-hover: #F4E4BA;
    --accent-primary-glow: rgba(212, 175, 55, 0.3);
    --accent-secondary: #B8960C;
    --gold: #D4AF37;
    --gold-light: #F4E4BA;
    --gold-dark: #B8960C;
    
    /* Status Colors */
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --error: #ef4444;
    --error-bg: rgba(239, 68, 68, 0.1);
    --info: #3b82f6;
    --info-bg: rgba(59, 130, 246, 0.1);
    
    /* Gradients - Gold Theme */
    --gradient-accent: linear-gradient(135deg, #D4AF37 0%, #F4E4BA 50%, #D4AF37 100%);
    --gradient-card: linear-gradient(180deg, rgba(212, 175, 55, 0.05) 0%, transparent 100%);
    --gradient-glow: radial-gradient(circle at center, var(--accent-primary-glow) 0%, transparent 70%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 30px var(--accent-primary-glow);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Typography */
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Layout */
    --sidebar-width: 280px;
    --header-height: 72px;
    --content-max-width: 1400px;
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #fafafa;
    --bg-secondary: #f4f4f5;
    --bg-tertiary: #e4e4e7;
    --bg-card: #ffffff;
    --bg-elevated: #ffffff;
    --bg-hover: #f4f4f5;
    
    --border-subtle: #e4e4e7;
    --border-default: #d4d4d8;
    
    --text-primary: #18181b;
    --text-secondary: #52525b;
    --text-tertiary: #71717a;
    --text-muted: #a1a1aa;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);
}

/* ========================================
   Base & Reset
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background Pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 100% 0%, rgba(139, 92, 246, 0.1), transparent);
    pointer-events: none;
    z-index: -1;
}

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

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; letter-spacing: -0.02em; }
h2 { font-size: 2rem; letter-spacing: -0.015em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

.text-gradient {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   Layout Components
   ======================================== */
.container {
    width: 100%;
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.page-wrapper {
    display: flex;
    min-height: 100vh;
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--spacing-xl);
    padding-top: calc(var(--header-height) + var(--spacing-xl));
    min-width: 0;
}

.content-wrapper {
    max-width: var(--content-max-width);
    margin: 0 auto;
}

@media (max-width: 1024px) {
    .main-content {
        margin-left: 0;
    }
}

/* ========================================
   Sidebar Navigation
   ======================================== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform var(--transition-normal);
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-subtle);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.sidebar-logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-accent);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    box-shadow: var(--shadow-glow);
}

.sidebar-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-nav {
    flex: 1;
    padding: var(--spacing-md);
    overflow-y: auto;
}

.nav-section {
    margin-bottom: var(--spacing-lg);
}

.nav-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    color: var(--text-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-xs);
}

.nav-item:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.nav-item.active {
    color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 24px;
    background: var(--accent-primary);
    border-radius: 0 var(--radius-full) var(--radius-full) 0;
}

.nav-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.nav-badge {
    margin-left: auto;
    background: var(--accent-primary);
    color: white;
    font-size: 0.75rem;
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-full);
}

.sidebar-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-subtle);
}

/* Mobile Sidebar */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .sidebar-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 99;
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--transition-normal);
    }
    
    .sidebar-overlay.open {
        opacity: 1;
        pointer-events: auto;
    }
}

/* ========================================
   Header / Top Bar
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    right: 0;
    height: var(--header-height);
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-xl);
    z-index: 90;
}

@media (max-width: 1024px) {
    .header {
        left: 0;
    }
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.mobile-menu-btn:hover {
    background: var(--bg-hover);
}

@media (max-width: 1024px) {
    .mobile-menu-btn {
        display: flex;
    }
}

.page-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.breadcrumb-item::after {
    content: '/';
    margin-left: var(--spacing-sm);
    color: var(--text-muted);
}

.breadcrumb-item:last-child::after {
    display: none;
}

.breadcrumb-item:last-child {
    color: var(--text-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.header-search {
    position: relative;
}

.header-search input {
    width: 280px;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-left: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.header-search input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-glow);
}

.header-search input::placeholder {
    color: var(--text-muted);
}

.header-search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    width: 16px;
    height: 16px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header-action-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    position: relative;
    transition: all var(--transition-fast);
}

.header-action-btn:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.notification-dot {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 8px;
    height: 8px;
    background: var(--error);
    border-radius: 50%;
    border: 2px solid var(--bg-primary);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    padding-right: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.user-menu:hover {
    background: var(--bg-hover);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: var(--gradient-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
}

.user-info {
    display: none;
}

@media (min-width: 768px) {
    .user-info {
        display: block;
    }
    
    .user-name {
        font-size: 0.875rem;
        font-weight: 500;
        color: var(--text-primary);
    }
    
    .user-role {
        font-size: 0.75rem;
        color: var(--text-tertiary);
    }
}

/* ========================================
   Cards
   ======================================== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--border-default);
    box-shadow: var(--shadow-lg);
}

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

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
}

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

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-tertiary);
}

/* Stat Cards */
.stat-card {
    padding: var(--spacing-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-accent);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.stat-icon.primary { background: rgba(99, 102, 241, 0.1); color: var(--accent-primary); }
.stat-icon.success { background: var(--success-bg); color: var(--success); }
.stat-icon.warning { background: var(--warning-bg); color: var(--warning); }
.stat-icon.error { background: var(--error-bg); color: var(--error); }

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.stat-change {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    margin-top: var(--spacing-sm);
}

.stat-change.positive {
    background: var(--success-bg);
    color: var(--success);
}

.stat-change.negative {
    background: var(--error-bg);
    color: var(--error);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-accent);
    color: #000;
    font-weight: 600;
    box-shadow: var(--shadow-md), 0 0 20px var(--accent-primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 30px var(--accent-primary-glow);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
}

.btn-ghost {
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.btn-danger {
    background: var(--error);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.8125rem;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
}

.btn-icon.btn-sm {
    width: 32px;
    height: 32px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ========================================
   Forms
   ======================================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.form-label.required::after {
    content: '*';
    color: var(--error);
    margin-left: 4px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-primary-glow);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: var(--error);
}

.form-error {
    font-size: 0.8125rem;
    color: var(--error);
    margin-top: var(--spacing-xs);
}

.form-help {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    margin-top: var(--spacing-xs);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.form-check-input {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
    cursor: pointer;
}

.form-check-label {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

/* File Upload */
.file-upload {
    border: 2px dashed var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.file-upload:hover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

.file-upload.dragover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

.file-upload-icon {
    font-size: 3rem;
    color: var(--accent-primary);
    margin-bottom: var(--spacing-md);
}

.file-upload-text {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.file-upload-hint {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* ========================================
   Tables
   ======================================== */
.table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    border-bottom: 1px solid var(--border-subtle);
}

.table th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    background: var(--bg-tertiary);
}

.table tbody tr {
    transition: background var(--transition-fast);
}

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

.table tbody tr:last-child td {
    border-bottom: none;
}

/* ========================================
   Badges & Tags
   ======================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-full);
}

.badge-primary {
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent-primary);
}

.badge-success {
    background: var(--success-bg);
    color: var(--success);
}

.badge-warning {
    background: var(--warning-bg);
    color: var(--warning);
}

.badge-error {
    background: var(--error-bg);
    color: var(--error);
}

.badge-info {
    background: var(--info-bg);
    color: var(--info);
}

/* ========================================
   Modals
   ======================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-2xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.modal-overlay.open .modal {
    transform: scale(1);
}

.modal-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.modal-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    max-height: 60vh;
}

.modal-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

/* ========================================
   Alerts & Notifications
   ======================================== */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.alert-icon {
    flex-shrink: 0;
    margin-top: 2px;
}

.alert-content {
    flex: 1;
}

.alert-title {
    font-weight: 600;
    margin-bottom: 4px;
}

.alert-message {
    font-size: 0.875rem;
    opacity: 0.9;
}

.alert-success {
    background: var(--success-bg);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success);
}

.alert-error {
    background: var(--error-bg);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--error);
}

.alert-warning {
    background: var(--warning-bg);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--warning);
}

.alert-info {
    background: var(--info-bg);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--info);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 1100;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 300px;
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ========================================
   Progress Bars
   ======================================== */
.progress {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

.progress-bar.success { background: var(--success); }
.progress-bar.warning { background: var(--warning); }
.progress-bar.error { background: var(--error); }

/* ========================================
   Skeleton Loaders
   ======================================== */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-tertiary) 25%,
        var(--bg-hover) 50%,
        var(--bg-tertiary) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite linear;
    border-radius: var(--radius-md);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-text {
    height: 1rem;
    margin-bottom: var(--spacing-sm);
}

.skeleton-text:last-child {
    width: 70%;
}

.skeleton-title {
    height: 1.5rem;
    width: 60%;
    margin-bottom: var(--spacing-md);
}

.skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
}

.skeleton-image {
    height: 200px;
    border-radius: var(--radius-lg);
}

/* ========================================
   Empty States
   ======================================== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
}

.empty-state-icon {
    font-size: 4rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-lg);
}

.empty-state-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.empty-state-message {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* ========================================
   Grid System
   ======================================== */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

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

@media (max-width: 768px) {
    .grid-cols-3,
    .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 { grid-template-columns: 1fr; }
}

/* Flex Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

/* Spacing Utilities */
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* ========================================
   Animations
   ======================================== */
.fade-in {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-up {
    animation: slideUp 0.3s ease;
}

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

.scale-in {
    animation: scaleIn 0.2s ease;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Stagger animation for lists */
.stagger-item {
    animation: slideUp 0.4s ease backwards;
}

.stagger-item:nth-child(1) { animation-delay: 0.05s; }
.stagger-item:nth-child(2) { animation-delay: 0.1s; }
.stagger-item:nth-child(3) { animation-delay: 0.15s; }
.stagger-item:nth-child(4) { animation-delay: 0.2s; }
.stagger-item:nth-child(5) { animation-delay: 0.25s; }
.stagger-item:nth-child(6) { animation-delay: 0.3s; }

/* ========================================
   Scrollbar
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-default);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .sidebar,
    .header,
    .btn,
    .no-print {
        display: none !important;
    }
    
    .main-content {
        margin: 0;
        padding: 0;
    }
    
    body {
        background: white;
        color: black;
    }
}