/* ============================================
   MagicAI KOL Platform - Design System
   Premium Dark Mode UI
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
    /* Colors - Dark Theme */
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-tertiary: #1a1f35;
    --bg-card: #151b2e;
    --bg-card-hover: #1c2340;
    --bg-input: #0d1225;
    --bg-sidebar: #0c1020;
    
    --text-primary: #e2e8f0;
    --text-secondary: #8892b0;
    --text-muted: #5a6480;
    --text-heading: #f1f5f9;
    
    --border-color: #1e2a45;
    --border-light: #2a3555;
    --border-focus: #667eea;
    
    /* Accent Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --gradient-warning: linear-gradient(135deg, #f2994a 0%, #f2c94c 100%);
    --gradient-danger: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
    --gradient-info: linear-gradient(135deg, #2193b0 0%, #6dd5ed 100%);
    --gradient-dark: linear-gradient(135deg, #0a0e1a 0%, #1a1f35 100%);
    
    /* Solid Colors */
    --color-primary: #667eea;
    --color-primary-hover: #7c8ff5;
    --color-secondary: #764ba2;
    --color-success: #38ef7d;
    --color-warning: #f2c94c;
    --color-danger: #f45c43;
    --color-info: #6dd5ed;
    
    /* Sizing */
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 70px;
    --header-height: 64px;
    --footer-height: 48px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.15);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.25);
    
    /* Glass */
    --glass-bg: rgba(15, 20, 40, 0.8);
    --glass-border: rgba(255, 255, 255, 0.05);
    --glass-blur: blur(20px);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Font */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Light Theme Override */
[data-theme="light"] {
    --bg-primary: #f0f2f5;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f8f9fa;
    --bg-card: #ffffff;
    --bg-card-hover: #f8f9fb;
    --bg-input: #f5f7fa;
    --bg-sidebar: #ffffff;
    
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #a0aec0;
    --text-heading: #0f172a;
    
    --border-color: #e2e8f0;
    --border-light: #edf2f7;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
    
    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(0, 0, 0, 0.05);
}

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

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 3px;
}

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

/* ---------- App Layout ---------- */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

.main-area {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left var(--transition-normal);
}

.main-content {
    flex: 1;
    padding: 24px;
    padding-top: calc(var(--header-height) + 24px);
}

/* Sidebar collapsed state */
.app-wrapper.sidebar-collapsed .main-area {
    margin-left: var(--sidebar-collapsed-width);
}

/* ---------- Sidebar ---------- */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: width var(--transition-normal);
    overflow: hidden;
}

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

/* Sidebar Logo */
.sidebar-logo {
    height: var(--header-height);
    padding: 0 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    overflow: hidden;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #fff;
    flex-shrink: 0;
}

.logo-img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    object-fit: contain;
    flex-shrink: 0;
}

.logo-text {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-heading);
    white-space: nowrap;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    flex-shrink: 0;
}

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

.app-wrapper.sidebar-collapsed .logo-text,
.app-wrapper.sidebar-collapsed .sidebar-close-btn,
.app-wrapper.sidebar-collapsed .nav-section-title,
.app-wrapper.sidebar-collapsed .nav-item span,
.app-wrapper.sidebar-collapsed .nav-arrow,
.app-wrapper.sidebar-collapsed .nav-badge,
.app-wrapper.sidebar-collapsed .nav-submenu,
.app-wrapper.sidebar-collapsed .user-info-small {
    display: none;
}

.app-wrapper.sidebar-collapsed .nav-item {
    justify-content: center;
    padding: 12px;
}

.app-wrapper.sidebar-collapsed .nav-item i:first-child {
    margin: 0;
    font-size: 18px;
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 12px 0;
}

.nav-section {
    padding: 0 12px;
    margin-bottom: 8px;
}

.nav-section-title {
    display: block;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text-muted);
    padding: 12px 12px 8px;
    white-space: nowrap;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    text-decoration: none;
}

.nav-item i:first-child {
    width: 20px;
    text-align: center;
    font-size: 15px;
    flex-shrink: 0;
}

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

.nav-item.active {
    color: #fff;
    background: var(--gradient-primary);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.nav-arrow {
    margin-left: auto;
    font-size: 10px;
    transition: transform var(--transition-fast);
}

.nav-group.open > .nav-item .nav-arrow {
    transform: rotate(90deg);
}

.nav-badge {
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 600;
    margin-left: auto;
}

.nav-badge.coming-soon {
    background: rgba(102, 126, 234, 0.15);
    color: var(--color-primary);
}

/* Submenu */
.nav-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
    padding-left: 24px;
}

.nav-group.open .nav-submenu {
    max-height: 300px;
}

.nav-sub-item {
    display: block;
    padding: 8px 12px;
    font-size: 12.5px;
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    border-left: 2px solid var(--border-color);
    margin: 2px 0;
    text-decoration: none;
}

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

.nav-sub-item.active {
    color: var(--color-primary);
    border-left-color: var(--color-primary);
    background: rgba(102, 126, 234, 0.08);
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar-small {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    flex-shrink: 0;
}

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

.user-avatar-small i {
    color: #fff;
    font-size: 14px;
}

.user-name-small {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-heading);
}

.user-role-small {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
}

/* ---------- Header ---------- */
.header {
    position: fixed;
    top: 0;
    right: 0;
    left: var(--sidebar-width);
    height: var(--header-height);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 900;
    transition: left var(--transition-normal);
}

.app-wrapper.sidebar-collapsed .header {
    left: var(--sidebar-collapsed-width);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

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

.header-toggle-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

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

/* Header Search */
.header-search {
    position: relative;
}

.header-search i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 13px;
}

.header-search input {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 8px 16px 8px 36px;
    color: var(--text-primary);
    font-size: 13px;
    width: 220px;
    outline: none;
    transition: var(--transition-fast);
    font-family: var(--font-family);
}

.header-search input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    width: 280px;
}

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

/* Header Icon Buttons */
.header-icon-btn {
    position: relative;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 17px;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

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

.header-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    background: var(--gradient-danger);
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    min-width: 16px;
    height: 16px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
}

/* Header User Button */
.header-user-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 4px 12px 4px 4px;
    cursor: pointer;
    transition: var(--transition-fast);
    color: var(--text-primary);
}

.header-user-btn:hover {
    border-color: var(--border-light);
    background: var(--bg-tertiary);
}

.header-user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

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

.header-user-avatar i {
    color: #fff;
    font-size: 13px;
}

.header-user-name {
    font-size: 13px;
    font-weight: 500;
}

.header-user-btn .fa-chevron-down {
    font-size: 10px;
    color: var(--text-muted);
}

/* ---------- Dropdowns ---------- */
.header-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    min-width: 240px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-fast);
    z-index: 1100;
}

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

.dropdown-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    font-size: 13px;
}

.dropdown-header a {
    font-size: 12px;
    font-weight: 400;
}

.dropdown-body {
    padding: 8px;
    max-height: 300px;
    overflow-y: auto;
}

.dropdown-empty {
    text-align: center;
    padding: 24px;
    color: var(--text-muted);
}

.dropdown-empty i {
    font-size: 24px;
    margin-bottom: 8px;
    display: block;
}

.dropdown-empty span {
    font-size: 12px;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 13px;
    transition: var(--transition-fast);
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-family: var(--font-family);
    text-decoration: none;
}

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

.dropdown-item-danger:hover {
    color: var(--color-danger);
    background: rgba(244, 92, 67, 0.08);
}

.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 4px 8px;
}

.dropdown-user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
}

.dropdown-user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    flex-shrink: 0;
}

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

.dropdown-user-avatar i {
    color: #fff;
    font-size: 16px;
}

.dropdown-user-info strong {
    display: block;
    font-size: 13px;
    color: var(--text-heading);
}

.dropdown-user-info small {
    font-size: 11px;
    color: var(--text-muted);
}

/* ---------- Footer ---------- */
.footer {
    padding: 12px 24px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 12px;
    color: var(--text-muted);
}

.footer-separator {
    margin: 0 8px;
    opacity: 0.3;
}

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

.status-dot {
    font-size: 8px;
}

.status-online {
    color: var(--color-success);
}

.status-offline {
    color: var(--color-danger);
}

.status-warning {
    color: var(--color-warning);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0;
    margin-bottom: 20px;
    font-size: 13px;
}

.breadcrumb-item {
    color: var(--text-muted);
    transition: var(--transition-fast);
    text-decoration: none;
}

.breadcrumb-item:hover {
    color: var(--color-primary);
}

.breadcrumb-item.active {
    color: var(--text-primary);
    font-weight: 500;
}

.breadcrumb-separator {
    color: var(--text-muted);
    font-size: 10px;
    margin: 0 8px;
    opacity: 0.4;
}

/* ---------- Page Header ---------- */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.page-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-heading);
}

.page-subtitle {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ---------- Cards ---------- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--border-light);
    box-shadow: var(--shadow-glow);
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-heading);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-title i {
    color: var(--color-primary);
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.1);
}

/* Stat Cards */
.stat-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    border-radius: 4px 0 0 4px;
}

.stat-card.primary::before { background: var(--gradient-primary); }
.stat-card.success::before { background: var(--gradient-success); }
.stat-card.warning::before { background: var(--gradient-warning); }
.stat-card.danger::before { background: var(--gradient-danger); }
.stat-card.info::before { background: var(--gradient-info); }

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    border-color: var(--border-light);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #fff;
    flex-shrink: 0;
}

.stat-icon.primary { background: var(--gradient-primary); }
.stat-icon.success { background: var(--gradient-success); }
.stat-icon.warning { background: var(--gradient-warning); }
.stat-icon.danger { background: var(--gradient-danger); }
.stat-icon.info { background: var(--gradient-info); }

.stat-info h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-heading);
    line-height: 1.2;
}

.stat-info p {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ---------- Forms ---------- */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-label .required {
    color: var(--color-danger);
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 13px;
    font-family: var(--font-family);
    outline: none;
    transition: var(--transition-fast);
}

.form-control:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

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

.form-control:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238892b0' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    cursor: pointer;
}

.form-hint {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}

.form-error {
    font-size: 11px;
    color: var(--color-danger);
    margin-top: 4px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

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

.input-icon-wrapper .form-control {
    padding-left: 40px;
}

.input-icon-wrapper .input-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 14px;
}

/* Password toggle */
.password-toggle {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    font-size: 14px;
}

.password-toggle:hover {
    color: var(--text-primary);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-family);
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    line-height: 1.4;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.45);
    transform: translateY(-1px);
    color: #fff;
}

.btn-success {
    background: var(--gradient-success);
    color: #000;
    box-shadow: 0 4px 15px rgba(56, 239, 125, 0.2);
}

.btn-success:hover {
    box-shadow: 0 6px 20px rgba(56, 239, 125, 0.35);
    transform: translateY(-1px);
}

.btn-warning {
    background: var(--gradient-warning);
    color: #000;
}

.btn-danger {
    background: var(--gradient-danger);
    color: #fff;
    box-shadow: 0 4px 15px rgba(244, 92, 67, 0.2);
}

.btn-danger:hover {
    box-shadow: 0 6px 20px rgba(244, 92, 67, 0.35);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(102, 126, 234, 0.05);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    padding: 8px 12px;
}

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

.btn-xs {
    padding: 4px 10px;
    font-size: 11px;
    white-space: nowrap;
    border-radius: var(--radius-sm);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
    white-space: nowrap;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 15px;
}

.text-nowrap {
    white-space: nowrap !important;
}

.btn-block {
    width: 100%;
}

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

.btn-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* ---------- Alerts ---------- */
.alert {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    animation: slideDown 0.3s ease;
    border: 1px solid;
}

.alert-success {
    background: rgba(56, 239, 125, 0.08);
    border-color: rgba(56, 239, 125, 0.2);
    color: var(--color-success);
}

.alert-error {
    background: rgba(244, 92, 67, 0.08);
    border-color: rgba(244, 92, 67, 0.2);
    color: var(--color-danger);
}

.alert-warning {
    background: rgba(242, 201, 76, 0.08);
    border-color: rgba(242, 201, 76, 0.2);
    color: var(--color-warning);
}

.alert-info {
    background: rgba(109, 213, 237, 0.08);
    border-color: rgba(109, 213, 237, 0.2);
    color: var(--color-info);
}

.alert-icon {
    font-size: 16px;
    flex-shrink: 0;
    margin-top: 1px;
}

.alert-content {
    flex: 1;
    font-size: 13px;
    line-height: 1.5;
}

.alert-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.alert-list li {
    padding: 2px 0;
}

.alert-close {
    background: none;
    border: none;
    color: inherit;
    opacity: 0.5;
    cursor: pointer;
    padding: 4px;
    font-size: 14px;
    flex-shrink: 0;
}

.alert-close:hover {
    opacity: 1;
}

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

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

.table th {
    background: var(--bg-tertiary);
    padding: 12px 16px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    text-align: left;
    white-space: nowrap;
}

.table td {
    padding: 12px 16px;
    font-size: 13px;
    border-top: 1px solid var(--border-color);
    color: var(--text-primary);
}

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

/* ---------- Badges ---------- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
}

.badge-success {
    background: rgba(56, 239, 125, 0.12);
    color: var(--color-success);
}

.badge-danger {
    background: rgba(244, 92, 67, 0.12);
    color: var(--color-danger);
}

.badge-warning {
    background: rgba(242, 201, 76, 0.12);
    color: var(--color-warning);
}

.badge-info {
    background: rgba(109, 213, 237, 0.12);
    color: var(--color-info);
}

.badge-primary {
    background: rgba(102, 126, 234, 0.12);
    color: var(--color-primary);
}

.badge-muted {
    background: var(--bg-tertiary);
    color: var(--text-muted);
}

/* ---------- Tabs ---------- */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 24px;
    overflow-x: auto;
}

.tab-item {
    padding: 12px 20px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    font-family: var(--font-family);
}

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

.tab-item.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* ---------- Progress ---------- */
.progress-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: 4px;
    transition: width var(--transition-slow);
    background: var(--gradient-primary);
}

.progress-fill.success { background: var(--gradient-success); }
.progress-fill.warning { background: var(--gradient-warning); }
.progress-fill.danger { background: var(--gradient-danger); }

/* ---------- Pagination ---------- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: 24px;
}

.pagination a, .pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 8px;
    font-size: 13px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: var(--transition-fast);
    text-decoration: none;
}

.pagination a:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.pagination .active {
    background: var(--gradient-primary);
    color: #fff;
    font-weight: 600;
}

.pagination .disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* ---------- Animations ---------- */
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

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

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

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

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.animate-fadeIn { animation: fadeIn 0.5s ease; }
.animate-slideDown { animation: slideDown 0.3s ease; }

/* Loading spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    display: inline-block;
}

/* ---------- Overlay ---------- */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    backdrop-filter: blur(4px);
}

/* ---------- Empty State ---------- */
.empty-state {
    text-align: center;
    padding: 48px 24px;
}

.empty-state i {
    font-size: 48px;
    color: var(--text-muted);
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 20px;
}

/* ---------- Grid ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }
.text-primary { color: var(--color-primary); }
.font-bold { font-weight: 700; }
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .header-search { display: none; }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .sidebar.mobile-open ~ .sidebar-overlay {
        display: block;
    }
    
    .main-area {
        margin-left: 0 !important;
    }
    
    .header {
        left: 0 !important;
    }
    
    .main-content {
        padding: 16px;
        padding-top: calc(var(--header-height) + 16px);
    }
    
    .stat-cards { grid-template-columns: 1fr; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .page-header { flex-direction: column; align-items: flex-start; }
    .footer-content { flex-direction: column; gap: 4px; text-align: center; }
    .header-user-name { display: none; }
}

/* Flex Utilities */
.flex-column { flex-direction: column !important; }
.align-items-start { align-items: flex-start !important; }
.gap-2 { gap: 8px !important; }
.gap-3 { gap: 16px !important; }