/* ============================================
   School Management System - Admin Theme
   Premium Modern Admin Panel CSS
   Inspired by Notion, Linear, Laravel Nova, Filament
   ============================================ */

/* ----- CSS Variables ----- */
:root {
    --primary: #2563EB;
    --primary-light: #3B82F6;
    --primary-dark: #1D4ED8;
    --primary-50: #EFF6FF;
    --primary-100: #DBEAFE;
    --primary-200: #BFDBFE;
    --primary-300: #93C5FD;
    --primary-400: #60A5FA;
    --primary-500: #3B82F6;
    --primary-600: #2563EB;
    --primary-700: #1D4ED8;
    --primary-800: #1E40AF;
    --primary-900: #1E3A8A;

    --success: #16A34A;
    --success-light: #22C55E;
    --success-dark: #15803D;
    --success-50: #F0FDF4;
    --success-100: #DCFCE7;
    --success-500: #22C55E;
    --success-600: #16A34A;
    --success-700: #15803D;

    --warning: #F59E0B;
    --warning-light: #FBBF24;
    --warning-dark: #D97706;
    --warning-50: #FFFBEB;
    --warning-100: #FEF3C7;
    --warning-500: #F59E0B;
    --warning-600: #D97706;
    --warning-700: #B45309;

    --danger: #DC2626;
    --danger-light: #EF4444;
    --danger-dark: #B91C1C;
    --danger-50: #FEF2F2;
    --danger-100: #FEE2E2;
    --danger-500: #EF4444;
    --danger-600: #DC2626;
    --danger-700: #B91C1C;

    --info: #0EA5E9;
    --info-light: #38BDF8;
    --info-dark: #0284C7;
    --info-50: #F0F9FF;
    --info-100: #E0F2FE;
    --info-500: #0EA5E9;
    --info-600: #0284C7;
    --info-700: #0369A1;

    --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;

    --sidebar-width: 260px;
    --sidebar-collapsed-width: 70px;
    --header-height: 64px;
    --footer-height: 48px;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --border-radius-sm: 6px;
    --border-radius: 10px;
    --border-radius-lg: 14px;
    --border-radius-xl: 18px;
    --border-radius-full: 9999px;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

    --sidebar-bg: #FFFFFF;
    --sidebar-text: var(--gray-600);
    --sidebar-text-active: var(--primary);
    --sidebar-hover-bg: var(--gray-50);
    --sidebar-active-bg: var(--primary-50);
    --sidebar-border: var(--gray-200);

    --header-bg: rgba(255, 255, 255, 0.85);
    --header-border: var(--gray-200);

    --body-bg: var(--gray-50);
    --card-bg: #FFFFFF;
    --card-border: var(--gray-200);

    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-500);
    --text-muted: var(--gray-400);

    --input-bg: #FFFFFF;
    --input-border: var(--gray-200);
    --input-focus-border: var(--primary);
    --input-focus-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);

    --scrollbar-track: var(--gray-100);
    --scrollbar-thumb: var(--gray-300);
}

/* ----- Dark Mode Variables ----- */
[data-bs-theme="dark"],
body.dark-mode {
    --primary: #3B82F6;
    --primary-light: #60A5FA;
    --primary-dark: #2563EB;
    --primary-50: #1E3A5F;
    --primary-100: #1E3A8A;

    --gray-50: #0F172A;
    --gray-100: #1E293B;
    --gray-200: #334155;
    --gray-300: #475569;
    --gray-400: #64748B;
    --gray-500: #94A3B8;
    --gray-600: #CBD5E1;
    --gray-700: #E2E8F0;
    --gray-800: #F1F5F9;
    --gray-900: #F8FAFC;

    --sidebar-bg: #0F172A;
    --sidebar-text: var(--gray-400);
    --sidebar-text-active: var(--primary-light);
    --sidebar-hover-bg: rgba(255, 255, 255, 0.04);
    --sidebar-active-bg: rgba(59, 130, 246, 0.1);
    --sidebar-border: var(--gray-200);

    --header-bg: rgba(15, 23, 42, 0.85);
    --header-border: var(--gray-200);

    --body-bg: #0F172A;
    --card-bg: #1E293B;
    --card-border: var(--gray-200);

    --text-primary: #F8FAFC;
    --text-secondary: var(--gray-400);
    --text-muted: var(--gray-500);

    --input-bg: #1E293B;
    --input-border: var(--gray-200);

    --scrollbar-track: #1E293B;
    --scrollbar-thumb: #334155;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

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

html {
    font-size: 15px;
    scroll-behavior: smooth;
}

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

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

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

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

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

/* ----- Admin Wrapper ----- */
.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

/* ----- Sidebar ----- */
.admin-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    display: flex;
    flex-direction: column;
    z-index: 1040;
    transition: width var(--transition), transform var(--transition);
    overflow: hidden;
}

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

.sidebar-brand {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 18px;
    border-bottom: 1px solid var(--sidebar-border);
    min-height: 64px;
    flex-shrink: 0;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    overflow: hidden;
    white-space: nowrap;
}

.brand-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.brand-text {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 6px;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

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

.sidebar-user {
    padding: 14px 18px;
    border-bottom: 1px solid var(--sidebar-border);
    flex-shrink: 0;
    overflow: hidden;
    white-space: nowrap;
}

.sidebar-user .avatar-sm {
    width: 36px;
    height: 36px;
    border-radius: var(--border-radius-full);
    overflow: hidden;
    flex-shrink: 0;
    border: 2px solid var(--primary-200);
}

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

.sidebar-user-info {
    overflow: hidden;
}

.sidebar-user-info .user-name {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.2;
}

.sidebar-user-info .user-role {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

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

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

.nav-section {
    padding: 16px 20px 6px;
}

.nav-section-title {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    display: block;
    overflow: hidden;
    white-space: nowrap;
}

.nav-item {
    padding: 0 10px;
    margin-bottom: 2px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 9px 14px;
    border-radius: var(--border-radius);
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    position: relative;
}

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

.nav-link.active {
    background: var(--sidebar-active-bg);
    color: var(--sidebar-text-active);
    font-weight: 600;
}

.nav-link.active::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    background: var(--primary);
    border-radius: 0 3px 3px 0;
}

.nav-icon {
    font-size: 1rem;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.nav-link:hover .nav-icon,
.nav-link.active .nav-icon {
    color: var(--primary);
}

.nav-label {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

.submenu-icon {
    font-size: 0.7rem;
    transition: transform var(--transition-fast);
    color: var(--text-muted);
}

.submenu-icon.rotated {
    transform: rotate(90deg);
}

.submenu {
    list-style: none;
    padding: 0;
    margin: 2px 0 4px 36px;
}

.sub-link {
    display: block;
    padding: 6px 14px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sub-link:hover {
    color: var(--text-primary);
    background: var(--sidebar-hover-bg);
}

.sub-link.active {
    color: var(--primary);
    font-weight: 600;
}

/* Collapsed Sidebar Overrides */
.sidebar-collapsed .brand-text,
.sidebar-collapsed .sidebar-user-info,
.sidebar-collapsed .nav-label,
.sidebar-collapsed .nav-section-title,
.sidebar-collapsed .submenu,
.sidebar-collapsed .submenu-icon,
.sidebar-collapsed .sidebar-footer .nav-label {
    display: none;
}

.sidebar-collapsed .sidebar-nav {
    padding: 12px 0;
}

.sidebar-collapsed .nav-item {
    padding: 0 8px;
}

.sidebar-collapsed .nav-link {
    padding: 9px;
    justify-content: center;
}

.sidebar-collapsed .nav-icon {
    margin: 0;
    font-size: 1.15rem;
}

.sidebar-collapsed .sidebar-brand {
    justify-content: center;
    padding: 16px 10px;
}

.sidebar-collapsed .brand-link {
    justify-content: center;
}

.sidebar-collapsed .sidebar-toggle {
    display: none;
}

.sidebar-collapsed .sidebar-user {
    display: flex;
    justify-content: center;
    padding: 14px 10px;
}

.sidebar-collapsed .sidebar-footer .nav-link {
    justify-content: center;
}

/* ----- Sidebar Footer ----- */
.sidebar-footer {
    padding: 10px;
    border-top: 1px solid var(--sidebar-border);
    flex-shrink: 0;
}

.sidebar-footer .nav-link {
    margin: 0;
}

/* ----- Sidebar Overlay ----- */
.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1035;
    backdrop-filter: blur(2px);
}

/* ----- Admin Main Content Area ----- */
.admin-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left var(--transition);
}

.sidebar-collapsed .admin-main {
    margin-left: var(--sidebar-collapsed-width);
}

/* ----- Header / Top Navbar ----- */
.admin-header {
    position: sticky;
    top: 0;
    z-index: 1030;
    height: var(--header-height);
    background: var(--header-bg);
    border-bottom: 1px solid var(--header-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
}

.header-sidebar-toggler {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    display: none;
}

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

.header-search {
    position: relative;
    max-width: 420px;
    width: 100%;
}

.header-search .search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.85rem;
    pointer-events: none;
}

.header-search .form-control {
    padding-left: 38px;
    height: 40px;
    font-size: 0.85rem;
    border-radius: var(--border-radius-full);
    background: var(--body-bg);
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.header-search .form-control:focus {
    background: var(--card-bg);
    border-color: var(--input-focus-border);
    box-shadow: var(--input-focus-shadow);
}

.header-search .form-control::placeholder {
    color: var(--text-muted);
    font-size: 0.82rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 4px;
}

.header-action-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    font-size: 1.05rem;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.notification-dot {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    background: var(--danger);
    border-radius: 50%;
    border: 2px solid var(--header-bg);
}

.avatar-xs {
    width: 32px;
    height: 32px;
    border-radius: var(--border-radius-full);
    overflow: hidden;
    flex-shrink: 0;
}

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

/* ----- Notification Dropdown ----- */
.notification-btn {
    position: relative;
}

.notification-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 360px;
    background: var(--card-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--card-border);
    z-index: 1050;
    overflow: hidden;
}

.dropdown-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--card-border);
}

.dropdown-header h6 {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 700;
}

.dropdown-header a {
    font-size: 0.78rem;
    color: var(--primary);
}

.dropdown-body {
    max-height: 320px;
    overflow-y: auto;
}

.notification-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 18px;
    text-decoration: none;
    color: var(--text-primary);
    transition: background var(--transition-fast);
    border-bottom: 1px solid var(--card-border);
}

.notification-item:last-child {
    border-bottom: none;
}

.notification-item:hover {
    background: var(--sidebar-hover-bg);
}

.notification-item.unread {
    background: var(--primary-50);
}

.notification-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.85rem;
    flex-shrink: 0;
}

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

.notification-content p {
    margin: 0;
    font-size: 0.82rem;
    font-weight: 500;
    line-height: 1.3;
}

.notification-content span {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.dropdown-footer {
    padding: 10px 18px;
    text-align: center;
    border-top: 1px solid var(--card-border);
}

.dropdown-footer a {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--primary);
}

/* ----- Profile Dropdown ----- */
.profile-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 260px;
    background: var(--card-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--card-border);
    z-index: 1050;
    overflow: hidden;
}

.dropdown-user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 18px;
}

.avatar-md {
    width: 44px;
    height: 44px;
    border-radius: var(--border-radius-full);
    overflow: hidden;
    flex-shrink: 0;
}

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

.dropdown-user-info h6 {
    margin: 0;
    font-size: 0.88rem;
    font-weight: 700;
}

.dropdown-user-info span {
    font-size: 0.76rem;
    color: var(--text-secondary);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    font-size: 0.84rem;
    color: var(--text-primary);
    transition: background var(--transition-fast);
}

.dropdown-item i {
    width: 18px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

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

.dropdown-item.text-danger i {
    color: var(--danger);
}

.dropdown-divider {
    margin: 0;
    border-top-color: var(--card-border);
}

/* ----- Main Content ----- */
.admin-content {
    flex: 1;
    padding: 24px;
    max-width: 100%;
}

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

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    margin: 0;
    line-height: 1.3;
}

.breadcrumb {
    margin: 4px 0 0;
    padding: 0;
    background: none;
}

.breadcrumb-item {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.breadcrumb-item a {
    color: var(--text-secondary);
}

.breadcrumb-item.active {
    color: var(--text-muted);
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--text-muted);
    opacity: 0.5;
}

.page-header-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

/* ----- Footer ----- */
.admin-footer {
    height: var(--footer-height);
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--card-border);
    font-size: 0.78rem;
    color: var(--text-muted);
    background: var(--card-bg);
    flex-shrink: 0;
}

/* ----- Cards ----- */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xs);
    transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.card:hover {
    box-shadow: var(--shadow);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--card-border);
    padding: 16px 20px;
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--text-primary);
}

.card-header:first-child {
    border-radius: calc(var(--border-radius-lg) - 1px) calc(var(--border-radius-lg) - 1px) 0 0;
}

.card-body {
    padding: 20px;
}

.card-footer {
    background: transparent;
    border-top: 1px solid var(--card-border);
    padding: 12px 20px;
}

.card-footer:last-child {
    border-radius: 0 0 calc(var(--border-radius-lg) - 1px) calc(var(--border-radius-lg) - 1px);
}

/* ----- Dashboard Stat Cards ----- */
.stat-card {
    padding: 20px;
    border-radius: var(--border-radius-lg);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-xs);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #fff;
    margin-bottom: 16px;
}

.stat-card .stat-icon.icon-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.stat-card .stat-icon.icon-success {
    background: linear-gradient(135deg, var(--success), var(--success-dark));
    box-shadow: 0 4px 12px rgba(22, 163, 74, 0.3);
}

.stat-card .stat-icon.icon-warning {
    background: linear-gradient(135deg, var(--warning), var(--warning-dark));
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.stat-card .stat-icon.icon-danger {
    background: linear-gradient(135deg, var(--danger), var(--danger-dark));
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
}

.stat-card .stat-icon.icon-info {
    background: linear-gradient(135deg, var(--info), var(--info-dark));
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-top: 4px;
}

.stat-change {
    font-size: 0.78rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: var(--border-radius-full);
    margin-top: 8px;
}

.stat-change.up {
    color: var(--success);
    background: var(--success-50);
}

.stat-change.down {
    color: var(--danger);
    background: var(--danger-50);
}

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

.table {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.table thead th {
    background: var(--gray-50);
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    padding: 12px 16px;
    border-bottom: 1px solid var(--card-border);
    white-space: nowrap;
    vertical-align: middle;
}

.table tbody td {
    padding: 12px 16px;
    vertical-align: middle;
    border-bottom: 1px solid var(--card-border);
}

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

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

.table tbody tr:hover {
    background: var(--gray-50);
}

.table tbody tr.clickable {
    cursor: pointer;
}

.table-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.table-actions .btn-sm {
    padding: 4px 10px;
    font-size: 0.75rem;
}

/* ----- Forms ----- */
.form-label {
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-control,
.form-select {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 0.88rem;
    padding: 9px 14px;
    transition: all var(--transition-fast);
    box-shadow: none;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--input-focus-border);
    box-shadow: var(--input-focus-shadow);
    background: var(--input-bg);
    color: var(--text-primary);
}

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

.form-control.is-invalid {
    border-color: var(--danger);
}

.form-control.is-valid {
    border-color: var(--success);
}

.form-select {
    cursor: pointer;
}

.form-text {
    font-size: 0.76rem;
    color: var(--text-muted);
}

.input-group-text {
    background: var(--gray-50);
    border: 1px solid var(--input-border);
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.form-check-input {
    border-color: var(--input-border);
    border-radius: 4px;
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.form-switch .form-check-input {
    border-radius: 2em;
    width: 2.5em;
}

.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.form-floating > .form-control:focus ~ label::after,
.form-floating > .form-control:not(:placeholder-shown) ~ label::after {
    background: var(--input-bg);
}

/* ----- Buttons ----- */
.btn {
    font-size: 0.88rem;
    font-weight: 600;
    padding: 9px 20px;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border-width: 1px;
    letter-spacing: 0.01em;
}

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

.btn:active {
    transform: translateY(0);
}

.btn:focus {
    box-shadow: none;
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.btn-success {
    background: var(--success);
    border-color: var(--success);
    color: #fff;
}

.btn-success:hover {
    background: var(--success-dark);
    border-color: var(--success-dark);
    color: #fff;
    box-shadow: 0 4px 12px rgba(22, 163, 74, 0.35);
}

.btn-warning {
    background: var(--warning);
    border-color: var(--warning);
    color: #fff;
}

.btn-warning:hover {
    background: var(--warning-dark);
    border-color: var(--warning-dark);
    color: #fff;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.35);
}

.btn-danger {
    background: var(--danger);
    border-color: var(--danger);
    color: #fff;
}

.btn-danger:hover {
    background: var(--danger-dark);
    border-color: var(--danger-dark);
    color: #fff;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.35);
}

.btn-info {
    background: var(--info);
    border-color: var(--info);
    color: #fff;
}

.btn-info:hover {
    background: var(--info-dark);
    border-color: var(--info-dark);
    color: #fff;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.35);
}

.btn-outline-primary {
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline-primary:hover {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
}

.btn-outline-secondary {
    color: var(--text-secondary);
    border-color: var(--input-border);
}

.btn-outline-secondary:hover {
    background: var(--sidebar-hover-bg);
    color: var(--text-primary);
    border-color: var(--gray-300);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.8rem;
    border-radius: var(--border-radius-sm);
}

.btn-lg {
    padding: 12px 28px;
    font-size: 1rem;
    border-radius: var(--border-radius);
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
}

.btn-icon.btn-sm {
    width: 30px;
    height: 30px;
    font-size: 0.75rem;
}

.btn-group .btn {
    border-radius: 0;
}

.btn-group .btn:first-child {
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.btn-group .btn:last-child {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

/* ----- Badges ----- */
.badge {
    font-size: 0.72rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: var(--border-radius-full);
    letter-spacing: 0.02em;
}

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

/* ----- Alerts (Custom) ----- */
.alert-custom {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 18px;
    border-radius: var(--border-radius);
    border: 1px solid transparent;
    margin-bottom: 16px;
    position: relative;
}

.alert-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-top: 1px;
}

.alert-content {
    flex: 1;
    font-size: 0.85rem;
}

.alert-content strong {
    font-weight: 700;
}

.alert-success-custom {
    background: var(--success-50);
    border-color: var(--success-100);
    color: var(--success-700);
}

.alert-success-custom .alert-icon { color: var(--success); }

.alert-danger-custom {
    background: var(--danger-50);
    border-color: var(--danger-100);
    color: var(--danger-700);
}

.alert-danger-custom .alert-icon { color: var(--danger); }

.alert-warning-custom {
    background: var(--warning-50);
    border-color: var(--warning-100);
    color: var(--warning-700);
}

.alert-warning-custom .alert-icon { color: var(--warning); }

.alert-info-custom {
    background: var(--info-50);
    border-color: var(--info-100);
    color: var(--info-700);
}

.alert-info-custom .alert-icon { color: var(--info); }

.alert-custom .btn-close {
    font-size: 0.7rem;
    padding: 6px;
    opacity: 0.5;
}

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

/* ----- Pagination ----- */
.pagination-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    padding: 16px 0;
}

.pagination-info {
    font-size: 0.84rem;
    color: var(--text-muted);
}

.pagination {
    margin: 0;
    gap: 4px;
}

.page-link {
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    color: var(--text-secondary);
    font-size: 0.84rem;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: var(--border-radius) !important;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 4px;
}

.page-link:hover {
    background: var(--sidebar-hover-bg);
    color: var(--text-primary);
    border-color: var(--gray-300);
}

.page-item.active .page-link {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.page-item.disabled .page-link {
    background: var(--card-bg);
    color: var(--text-muted);
    opacity: 0.5;
    pointer-events: none;
}

/* ----- Glass Effect ----- */
.glass {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--border-radius-lg);
}

.glass-card {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
}

[data-bs-theme="dark"] .glass-card {
    background: rgba(30, 41, 59, 0.7);
    border-color: rgba(255, 255, 255, 0.08);
}

/* ----- Guest Layout ----- */
.guest-layout {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--gray-50) 50%, var(--primary-50) 100%);
    padding: 20px;
}

[data-bs-theme="dark"] .guest-layout {
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0F172A 100%);
}

.guest-wrapper {
    position: relative;
    width: 100%;
    max-width: 460px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.guest-bg-shapes {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.15;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -100px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: var(--success);
    bottom: -80px;
    left: -80px;
    animation: float 10s ease-in-out infinite reverse;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: var(--warning);
    bottom: 30%;
    right: -40px;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.05); }
}

.guest-container {
    position: relative;
    z-index: 1;
    width: 100%;
}

.guest-header {
    margin-bottom: 24px !important;
}

.guest-logo {
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.guest-logo .logo-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 24px;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
}

.guest-logo h2 {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -0.03em;
}

.guest-card {
    position: relative;
}

.guest-card-inner {
    background: var(--card-bg);
    border-radius: var(--border-radius-xl);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-xl);
    padding: 36px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

[data-bs-theme="dark"] .guest-card-inner {
    background: rgba(30, 41, 59, 0.85);
    backdrop-filter: blur(20px);
}

.guest-footer p {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin: 0;
}

/* ----- Skeleton Loading ----- */
.skeleton-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    margin-bottom: 16px;
}

.skeleton-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.skeleton-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gray-200);
    animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.skeleton-lines {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.skeleton-line {
    height: 12px;
    border-radius: 4px;
    background: var(--gray-200);
    animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.skeleton-body {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skeleton-footer {
    display: flex;
    justify-content: space-between;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--card-border);
}

.skeleton-table {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.skeleton-table-header,
.skeleton-table-row {
    display: grid;
    gap: 16px;
    padding: 14px 20px;
    border-bottom: 1px solid var(--card-border);
}

.skeleton-table-header {
    background: var(--gray-50);
}

.skeleton-table-header .skeleton-line {
    height: 10px;
}

.skeleton-table-row .skeleton-line {
    height: 12px;
}

.skeleton-table-row:last-child {
    border-bottom: none;
}

.skeleton-text-wrapper {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 12px;
}

.skeleton-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--gray-200);
    animation: skeleton-pulse 1.5s ease-in-out infinite;
    flex-shrink: 0;
}

.skeleton-chart {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-lg);
    padding: 24px;
}

.skeleton-chart-bars {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    height: 180px;
    padding-bottom: 20px;
}

.skeleton-bar {
    flex: 1;
    border-radius: 4px 4px 0 0;
    background: var(--gray-200);
    animation: skeleton-pulse 1.5s ease-in-out infinite;
}

.skeleton-chart-labels {
    display: flex;
    gap: 12px;
}

.skeleton-chart-labels .skeleton-line {
    flex: 1;
    height: 8px;
}

.skeleton-stat {
    display: flex;
    align-items: center;
    gap: 16px;
}

.skeleton-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius);
    background: var(--gray-200);
    animation: skeleton-pulse 1.5s ease-in-out infinite;
    flex-shrink: 0;
}

.skeleton-stat-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

@keyframes skeleton-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-16px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ----- Progress Bars ----- */
.progress {
    background: var(--gray-100);
    border-radius: var(--border-radius-full);
    height: 8px;
    overflow: hidden;
}

.progress-bar {
    background: var(--primary);
    border-radius: var(--border-radius-full);
    transition: width 0.6s ease;
}

/* ----- Modals ----- */
.modal-content {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
}

.modal-header {
    border-bottom: 1px solid var(--card-border);
    padding: 18px 24px;
}

.modal-header .modal-title {
    font-weight: 700;
    font-size: 1.05rem;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    border-top: 1px solid var(--card-border);
    padding: 14px 24px;
}

.modal-backdrop.show {
    opacity: 0.4;
}

.modal .btn-close {
    background: transparent;
    opacity: 0.4;
    font-size: 0.8rem;
}

.modal .btn-close:hover {
    opacity: 0.8;
}

/* ----- Dropdowns ----- */
.dropdown-menu {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 6px;
}

.dropdown-menu .dropdown-item {
    border-radius: var(--border-radius-sm);
    padding: 8px 14px;
    font-size: 0.84rem;
}

.dropdown-menu .dropdown-item:hover {
    background: var(--sidebar-hover-bg);
}

.dropdown-menu .dropdown-divider {
    border-top-color: var(--card-border);
}

/* ----- Nav Tabs ----- */
.nav-tabs {
    border-bottom: 1px solid var(--card-border);
    gap: 4px;
}

.nav-tabs .nav-link {
    border: none;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 10px 18px;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    transition: all var(--transition-fast);
    margin-bottom: -1px;
}

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

.nav-tabs .nav-link.active {
    color: var(--primary);
    background: transparent;
    border-bottom: 2px solid var(--primary);
    font-weight: 600;
}

.tab-content {
    padding-top: 20px;
}

/* ----- Tooltips ----- */
.tooltip-inner {
    background: var(--gray-800);
    color: #fff;
    font-size: 0.78rem;
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
}

.bs-tooltip-auto[data-popper-placement^=top] .tooltip-arrow::before,
.bs-tooltip-top .tooltip-arrow::before {
    border-top-color: var(--gray-800);
}

/* ----- Offcanvas ----- */
.offcanvas {
    background: var(--card-bg);
    border-color: var(--card-border);
}

.offcanvas-header {
    border-bottom: 1px solid var(--card-border);
}

/* ----- List Group ----- */
.list-group-item {
    background: var(--card-bg);
    border-color: var(--card-border);
    color: var(--text-primary);
}

.list-group-item:hover {
    background: var(--sidebar-hover-bg);
}

/* ----- Responsive ----- */
@media (max-width: 1199.98px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }

    .sidebar-collapsed .admin-sidebar {
        transform: translateX(0);
        width: var(--sidebar-width);
    }

    .sidebar-collapsed .brand-text,
    .sidebar-collapsed .sidebar-user-info,
    .sidebar-collapsed .nav-label,
    .sidebar-collapsed .nav-section-title,
    .sidebar-collapsed .submenu,
    .sidebar-collapsed .submenu-icon {
        display: block;
    }

    .sidebar-collapsed .nav-link {
        justify-content: flex-start;
        padding: 9px 14px;
    }

    .sidebar-collapsed .sidebar-brand {
        justify-content: space-between;
        padding: 16px 18px;
    }

    .sidebar-collapsed .sidebar-toggle {
        display: block;
    }

    .sidebar-collapsed .sidebar-user {
        display: block;
        padding: 14px 18px;
    }

    .admin-main {
        margin-left: 0 !important;
    }

    .sidebar-collapsed .admin-main {
        margin-left: 0 !important;
    }

    .header-sidebar-toggler {
        display: flex;
    }

    .header-search {
        max-width: 240px;
    }
}

@media (max-width: 767.98px) {
    html {
        font-size: 14px;
    }

    .admin-header {
        padding: 0 16px;
    }

    .admin-content {
        padding: 16px;
    }

    .header-search {
        display: none;
    }

    .page-header {
        flex-direction: column;
        gap: 12px;
    }

    .page-title {
        font-size: 1.2rem;
    }

    .page-header-right {
        width: 100%;
    }

    .notification-dropdown {
        width: 300px;
        right: -60px;
    }

    .profile-dropdown {
        width: 240px;
    }

    .admin-footer {
        flex-direction: column;
        text-align: center;
        gap: 4px;
        height: auto;
        padding: 12px 16px;
    }

    .pagination-wrapper {
        flex-direction: column;
        align-items: flex-start;
    }

    .guest-card-inner {
        padding: 28px 24px;
    }

    .shape {
        display: none;
    }
}

@media (max-width: 575.98px) {
    .stat-card .stat-value {
        font-size: 1.4rem;
    }

    .table thead th,
    .table tbody td {
        padding: 10px 12px;
    }

    .card-body {
        padding: 16px;
    }
}

/* ----- Print Styles ----- */
@media print {
    .admin-sidebar,
    .admin-header,
    .admin-footer,
    .page-header-right,
    .table-actions,
    .btn {
        display: none !important;
    }

    .admin-main {
        margin-left: 0 !important;
    }

    .admin-content {
        padding: 0 !important;
    }

    .card {
        border: 1px solid #ddd !important;
        box-shadow: none !important;
    }

    .table {
        border: 1px solid #ddd !important;
    }

    table {
        page-break-inside: auto;
    }

    tr {
        page-break-inside: avoid;
        page-break-after: auto;
    }

    thead {
        display: table-header-group;
    }

    tfoot {
        display: table-footer-group;
    }
}