/* ===================================
   Admin Portal - Modern UI/UX Design
   Professional & Mobile Responsive
   =================================== */

/* ===================================
   CSS Variables
   =================================== */
:root {
    /* Colors */
    --admin-primary: #667eea;
    --admin-primary-dark: #5a67d8;
    --admin-secondary: #764ba2;
    --admin-accent: #00f2fe;
    --admin-success: #10b981;
    --admin-warning: #f59e0b;
    --admin-danger: #ef4444;
    --admin-info: #3b82f6;

    /* Backgrounds */
    --admin-bg: #0f0c29;
    --admin-surface: #1a1744;
    --admin-card: rgba(255, 255, 255, 0.05);
    --admin-glass: rgba(255, 255, 255, 0.08);

    /* Text */
    --admin-text: #ffffff;
    --admin-text-muted: #94a3b8;
    --admin-text-subtle: #64748b;

    /* Borders */
    --admin-border: rgba(255, 255, 255, 0.1);
    --admin-border-focus: rgba(102, 126, 234, 0.5);

    /* Shadows */
    --admin-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --admin-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --admin-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --admin-glow: 0 0 20px rgba(102, 126, 234, 0.4);

    /* Gradients */
    --admin-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --admin-gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --admin-gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    --admin-gradient-warning: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);

    /* Spacing */
    --admin-gap-xs: 0.25rem;
    --admin-gap-sm: 0.5rem;
    --admin-gap-md: 1rem;
    --admin-gap-lg: 1.5rem;
    --admin-gap-xl: 2rem;

    /* Radius */
    --admin-radius-sm: 6px;
    --admin-radius-md: 10px;
    --admin-radius-lg: 16px;
    --admin-radius-xl: 24px;
    --admin-radius-full: 9999px;

    /* Sidebar */
    --sidebar-width: 280px;
    --sidebar-collapsed: 70px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    overflow-x: hidden;
    max-width: 100vw;
}

body.admin-body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--admin-bg);
    color: var(--admin-text);
    line-height: 1.6;
    overflow-x: hidden;
    max-width: 100vw;
    position: relative;
}

/* ===================================
   Admin Layout Structure
   =================================== */
.admin-layout {
    display: flex;
    min-height: 100vh;
    position: relative;
}

/* ===================================
   Sidebar Navigation - Enhanced
   =================================== */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--admin-surface) 0%, rgba(15, 12, 41, 0.98) 100%);
    border-right: 1px solid var(--admin-border);
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-normal), width var(--transition-normal);
    overflow: hidden;
}

.sidebar::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: var(--admin-gradient);
    opacity: 0.1;
    pointer-events: none;
}

/* Sidebar Scrollable Area */
.sidebar-scroll {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding-bottom: var(--admin-gap-lg);
}

.sidebar-scroll::-webkit-scrollbar {
    width: 4px;
}

.sidebar-scroll::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar-scroll::-webkit-scrollbar-thumb {
    background: var(--admin-primary);
    border-radius: 2px;
}

/* Sidebar Header */
.sidebar-header {
    padding: var(--admin-gap-lg);
    text-align: center;
    border-bottom: 1px solid var(--admin-border);
    flex-shrink: 0;
    position: relative;
}

.sidebar-logo {
    width: 70px;
    height: 70px;
    margin: 0 auto var(--admin-gap-sm);
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--admin-primary);
    box-shadow: var(--admin-glow);
    transition: transform var(--transition-normal);
}

.sidebar-logo:hover {
    transform: scale(1.05);
}

.sidebar-school-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--admin-text);
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-school-id {
    font-size: 0.8rem;
    color: var(--admin-text-muted);
    padding: 0.25rem 0.75rem;
    background: var(--admin-glass);
    border-radius: var(--admin-radius-full);
    display: inline-block;
}

/* Sidebar Navigation */
.sidebar-nav {
    list-style: none;
    padding: var(--admin-gap-md) 0;
    margin: 0;
}

.sidebar-nav-item {
    margin: 2px var(--admin-gap-sm);
}

.sidebar-nav-link {
    display: flex;
    align-items: center;
    gap: var(--admin-gap-md);
    padding: 0.75rem var(--admin-gap-md);
    color: var(--admin-text-muted);
    text-decoration: none;
    border-radius: var(--admin-radius-md);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.sidebar-nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: var(--admin-gradient);
    transform: scaleY(0);
    transition: transform var(--transition-fast);
    border-radius: 0 2px 2px 0;
}

.sidebar-nav-link:hover {
    color: var(--admin-text);
    background: rgba(102, 126, 234, 0.1);
}

.sidebar-nav-link:hover::before {
    transform: scaleY(1);
}

.sidebar-nav-link.active {
    color: var(--admin-text);
    background: rgba(102, 126, 234, 0.15);
}

.sidebar-nav-link.active::before {
    transform: scaleY(1);
}

.sidebar-nav-icon {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}

/* Sidebar Section Headers */
.sidebar-section {
    padding: var(--admin-gap-md) var(--admin-gap-lg) var(--admin-gap-sm);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--admin-text-subtle);
}

/* Sidebar Dropdown Menu */
.sidebar-dropdown {
    position: relative;
}

.sidebar-dropdown-toggle {
    justify-content: flex-start;
}

.sidebar-dropdown-arrow {
    margin-left: auto;
    font-size: 0.6rem;
    transition: transform 0.3s ease;
    opacity: 0.6;
}

.sidebar-dropdown-toggle.open .sidebar-dropdown-arrow {
    transform: rotate(180deg);
}

.sidebar-dropdown-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    background: rgba(0, 0, 0, 0.15);
    border-radius: var(--admin-radius-md);
    margin-top: 0.25rem;
}

.sidebar-dropdown-menu.open {
    max-height: 600px;
    padding: 0.5rem 0;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-dropdown-menu.open::-webkit-scrollbar {
    width: 6px;
}

.sidebar-dropdown-menu.open::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar-dropdown-menu.open::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
}

.sidebar-dropdown-menu.open::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

.sidebar-submenu-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem 0.5rem 2.5rem;
    color: var(--admin-text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.2s ease;
    border-radius: var(--admin-radius-sm);
    margin: 0 0.5rem;
}

.sidebar-submenu-link:hover {
    color: var(--admin-text);
    background: rgba(102, 126, 234, 0.1);
}

.sidebar-submenu-link.active {
    color: var(--admin-primary);
    background: rgba(102, 126, 234, 0.15);
}

.sidebar-submenu-link span {
    font-size: 0.9rem;
}

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

/* ===================================
   Main Content Area
   =================================== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    background: var(--admin-bg);
    transition: margin-left var(--transition-normal);
    display: flex;
    flex-direction: column;
    max-width: calc(100vw - var(--sidebar-width));
    overflow-x: hidden;
}

/* ===================================
   Header / Top Bar - Enhanced
   =================================== */
.admin-header {
    background: linear-gradient(180deg, rgba(26, 23, 68, 0.98) 0%, rgba(26, 23, 68, 0.95) 100%);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(102, 126, 234, 0.15);
    padding: 0.75rem var(--admin-gap-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    flex-shrink: 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    overflow: visible;
}

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

.sidebar-toggle {
    display: none;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: var(--admin-text);
    font-size: 1.3rem;
    cursor: pointer;
    transition: all 0.25s ease;
    align-items: center;
    justify-content: center;
}

.sidebar-toggle:hover {
    background: rgba(102, 126, 234, 0.15);
    border-color: rgba(102, 126, 234, 0.4);
    color: var(--admin-primary);
}

.sidebar-toggle:active {
    transform: scale(0.95);
}

.header-school-brand {
    display: flex;
    align-items: center;
    gap: var(--admin-gap-md);
    padding: 8px 16px;
    background: var(--admin-glass);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-lg);
}

.header-school-logo {
    width: 42px;
    height: 42px;
    border-radius: var(--admin-radius-md);
    object-fit: cover;
    border: 2px solid var(--admin-primary);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.25);
}

.header-school-logo-placeholder {
    width: 42px;
    height: 42px;
    border-radius: var(--admin-radius-md);
    background: var(--admin-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.25);
}

.header-school-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow: hidden;
    max-width: 200px;
}

.header-school-name {
    font-size: 1rem;
    font-weight: 700;
    background: var(--admin-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    white-space: nowrap;
}

/* Marquee animation for long school names */
@keyframes marquee-scroll {
    0% {
        transform: translateX(0);
    }

    10% {
        transform: translateX(0);
    }

    90% {
        transform: translateX(calc(-100% + 120px));
    }

    100% {
        transform: translateX(calc(-100% + 120px));
    }
}

.header-school-name.marquee {
    animation: marquee-scroll 6s ease-in-out infinite alternate;
}

.header-school-tagline {
    font-size: 0.75rem;
    color: var(--admin-text-muted);
    font-weight: 500;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--admin-gap-md);
    overflow: visible;
    position: relative;
}

/* Header Center - Portal Title */
.header-center {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.header-portal-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin: 0;
    background: var(--admin-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.5px;
}

/* Dropdown Header */
.dropdown-header {
    padding: 0.75rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.dropdown-header strong {
    color: var(--admin-text);
    font-size: 0.95rem;
}

.dropdown-header small {
    color: var(--admin-text-muted);
    font-size: 0.8rem;
}

/* Notification Bell */
.header-notifications {
    position: relative;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--admin-glass);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.header-notifications:hover {
    background: rgba(102, 126, 234, 0.2);
    border-color: var(--admin-primary);
}

.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 18px;
    height: 18px;
    background: var(--admin-danger);
    border-radius: 50%;
    font-size: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

/* Admin Profile - Enhanced */
.header-admin-profile {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1rem 0.5rem 0.5rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.25s ease;
}

.header-admin-profile:hover {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.2) 0%, rgba(118, 75, 162, 0.2) 100%);
    border-color: var(--admin-primary);
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.25);
    transform: translateY(-1px);
}

.header-admin-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--admin-primary);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.header-admin-info {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.header-admin-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--admin-text);
    line-height: 1.2;
}

.header-admin-role {
    font-size: 0.7rem;
    color: var(--admin-primary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Logout Button */
.btn-logout {
    padding: 0.6rem 1.25rem;
    background: var(--admin-gradient-danger);
    color: white;
    border: none;
    border-radius: var(--admin-radius-md);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-logout:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
}

/* Header Center - Search Enhanced */
.header-center {
    flex: 1;
    max-width: 450px;
    margin: 0 var(--admin-gap-xl);
}

.header-search {
    position: relative;
    display: flex;
    align-items: center;
}

.header-search .search-icon {
    position: absolute;
    left: 16px;
    font-size: 1.1rem;
    opacity: 0.5;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.header-search:focus-within .search-icon {
    opacity: 0.8;
}

.header-search-input {
    width: 100%;
    padding: 0.85rem 1.25rem 0.85rem 3rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    color: var(--admin-text);
    font-size: 0.9rem;
    font-weight: 400;
    outline: none;
    transition: all 0.25s ease;
}

.header-search-input:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.12);
}

.header-search-input:focus {
    background: rgba(102, 126, 234, 0.08);
    border-color: rgba(102, 126, 234, 0.5);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1), 0 4px 20px rgba(0, 0, 0, 0.2);
}

.header-search-input::placeholder {
    color: var(--admin-text-subtle);
    font-weight: 400;
}

/* Header Breadcrumb - Enhanced */
.header-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.9rem;
    color: var(--admin-text-muted);
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.breadcrumb-home {
    font-size: 1.1rem;
    cursor: default;
}

.breadcrumb-separator {
    opacity: 0.3;
    font-size: 0.85rem;
}

.breadcrumb-current {
    color: var(--admin-text);
    font-weight: 600;
    background: linear-gradient(135deg, var(--admin-primary), var(--admin-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Header Actions - Enhanced */
.header-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.header-action-btn {
    position: relative;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    color: var(--admin-text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.25s ease;
}

.header-action-btn:hover {
    background: rgba(102, 126, 234, 0.15);
    border-color: rgba(102, 126, 234, 0.4);
    color: var(--admin-text);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.2);
}

.header-action-btn:active {
    transform: translateY(0) scale(0.95);
}

.action-badge {
    position: absolute;
    top: 6px;
    right: 6px;
    min-width: 8px;
    height: 8px;
    background: var(--admin-danger);
    border-radius: 50%;
    display: none;
    box-shadow: 0 0 8px rgba(239, 68, 68, 0.6);
    animation: pulse-badge 2s infinite;
}

.action-badge:not(:empty) {
    display: block;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    font-size: 9px;
    font-weight: 700;
    color: white;
    top: 2px;
    right: 2px;
    border-radius: var(--admin-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

@keyframes pulse-badge {

    0%,
    100% {
        box-shadow: 0 0 8px rgba(239, 68, 68, 0.6);
    }

    50% {
        box-shadow: 0 0 16px rgba(239, 68, 68, 0.9);
    }
}

/* Header Divider */
.header-divider {
    width: 1px;
    height: 28px;
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    margin: 0 0.5rem;
}

/* Profile Dropdown Arrow */
.profile-dropdown-arrow {
    font-size: 0.55rem;
    color: var(--admin-text-muted);
    transition: all 0.25s ease;
    margin-left: 0.25rem;
    opacity: 0.7;
}

.header-admin-profile:hover .profile-dropdown-arrow,
.header-admin-profile.active .profile-dropdown-arrow {
    color: var(--admin-primary);
    opacity: 1;
}

.header-admin-profile.active .profile-dropdown-arrow {
    transform: rotate(180deg);
}

/* Profile Dropdown Menu - Enhanced */
.profile-dropdown {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    min-width: 220px;
    background: linear-gradient(180deg, rgba(26, 23, 68, 0.98) 0%, rgba(15, 12, 41, 0.98) 100%);
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.05);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) scale(0.95);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    z-index: 9999;
    padding: 0.5rem 0;
}

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

/* Dropdown arrow pointer */
.profile-dropdown::before {
    content: '';
    position: absolute;
    top: -6px;
    right: 20px;
    width: 12px;
    height: 12px;
    background: rgba(26, 23, 68, 0.98);
    border-left: 1px solid rgba(102, 126, 234, 0.2);
    border-top: 1px solid rgba(102, 126, 234, 0.2);
    transform: rotate(45deg);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    color: var(--admin-text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
    position: relative;
}

.dropdown-item:hover {
    background: rgba(102, 126, 234, 0.15);
    color: var(--admin-text);
    padding-left: 1.5rem;
}

.dropdown-item span:first-child {
    font-size: 1.1rem;
    width: 24px;
    text-align: center;
}

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

.dropdown-item.text-danger:hover {
    background: rgba(239, 68, 68, 0.15);
    color: #ff6b6b;
}

.dropdown-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.3), transparent);
    margin: 0.5rem 1rem;
}

/* ===================================
   Content Container
   =================================== */
.content-container {
    padding: var(--admin-gap-lg);
    flex: 1;
    overflow-x: hidden;
    max-width: 100%;
}

/* Scrollable wrapper for tables and wide cards */
.scroll-wrapper {
    overflow-x: auto;
    max-width: 100%;
}

/* Page Header */
.page-header {
    margin-bottom: var(--admin-gap-xl);
}

.page-title {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: var(--admin-gap-xs);
    display: flex;
    align-items: center;
    gap: var(--admin-gap-sm);
}

.page-title-icon {
    font-size: 1.5rem;
}

.page-subtitle {
    color: var(--admin-text-muted);
    font-size: 0.95rem;
}

.page-actions {
    display: flex;
    gap: var(--admin-gap-sm);
    flex-wrap: wrap;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--admin-text-muted);
    margin-bottom: var(--admin-gap-sm);
}

.breadcrumb a {
    color: var(--admin-primary);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb-separator {
    opacity: 0.5;
}

/* ===================================
   Dashboard Cards - Modern Grid
   =================================== */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--admin-gap-lg);
    margin-bottom: var(--admin-gap-xl);
}

.stat-card {
    background: var(--admin-glass);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-lg);
    padding: var(--admin-gap-lg);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--admin-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--admin-primary);
    box-shadow: var(--admin-shadow-lg);
}

.stat-card:hover::before {
    transform: scaleX(1);
}

.stat-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--admin-gap-md);
}

.stat-card-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--admin-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: var(--admin-gradient);
    box-shadow: var(--admin-glow);
}

.stat-card-icon.success {
    background: var(--admin-gradient-success);
}

.stat-card-icon.warning {
    background: var(--admin-gradient-warning);
}

.stat-card-icon.danger {
    background: var(--admin-gradient-danger);
}

.stat-card-trend {
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
    border-radius: var(--admin-radius-sm);
    font-weight: 600;
}

.stat-card-trend.up {
    background: rgba(16, 185, 129, 0.2);
    color: var(--admin-success);
}

.stat-card-trend.down {
    background: rgba(239, 68, 68, 0.2);
    color: var(--admin-danger);
}

.stat-card-body {
    margin-bottom: var(--admin-gap-sm);
}

.stat-card-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--admin-text);
    line-height: 1.2;
    margin-bottom: 0.25rem;
}

.stat-card-label {
    color: var(--admin-text-muted);
    font-size: 1rem;
    font-weight: 500;
}

.stat-card-footer {
    padding-top: var(--admin-gap-sm);
    border-top: 1px solid var(--admin-border);
    font-size: 0.85rem;
    color: var(--admin-text-subtle);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ===================================
   Cards - General
   =================================== */
.card {
    background: var(--admin-glass);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: rgba(102, 126, 234, 0.3);
}

.card-header {
    padding: var(--admin-gap-md) var(--admin-gap-lg);
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--admin-gap-sm);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.card-footer {
    padding: var(--admin-gap-md) var(--admin-gap-lg);
    border-top: 1px solid var(--admin-border);
    background: rgba(0, 0, 0, 0.2);
}

/* ===================================
   Data Tables - Enhanced
   =================================== */
.table-wrapper {
    background: var(--admin-glass);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-lg);
    overflow: hidden;
    margin-bottom: var(--admin-gap-lg);
}

.table-header {
    padding: var(--admin-gap-md) var(--admin-gap-lg);
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--admin-gap-md);
}

.table-title {
    font-size: 1.1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.table-responsive {
    overflow-x: auto;
}

@supports (scrollbar-width: thin) {
    .table-responsive {
        scrollbar-width: thin;
        scrollbar-color: var(--admin-primary) rgba(255, 255, 255, 0.1);
    }
}

.table-responsive::-webkit-scrollbar {
    height: 8px;
}

.table-responsive::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

.table-responsive::-webkit-scrollbar-thumb {
    background: var(--admin-primary);
    border-radius: 4px;
}

.table-responsive::-webkit-scrollbar-thumb:hover {
    background: var(--admin-secondary);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.data-table thead {
    background: rgba(102, 126, 234, 0.1);
}

.data-table th {
    padding: var(--admin-gap-md);
    text-align: left;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--admin-text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
    border-bottom: 2px solid var(--admin-border);
}

.data-table td {
    padding: var(--admin-gap-md);
    border-bottom: 1px solid var(--admin-border);
    color: var(--admin-text-muted);
    font-size: 0.9rem;
    vertical-align: middle;
}

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

.data-table tbody tr:hover {
    background: rgba(102, 126, 234, 0.08);
}

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

/* Table Cell Variants */
.table-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--admin-border);
}

.table-user {
    display: flex;
    align-items: center;
    gap: var(--admin-gap-sm);
}

.table-user-info {
    display: flex;
    flex-direction: column;
}

.table-user-name {
    font-weight: 600;
    color: var(--admin-text);
}

.table-user-email {
    font-size: 0.8rem;
    color: var(--admin-text-subtle);
}

/* Table Filters */
.table-filters {
    display: flex;
    gap: var(--admin-gap-sm);
    flex-wrap: wrap;
    align-items: center;
}

.table-search {
    position: relative;
}

.table-search input {
    padding: 0.6rem 1rem 0.6rem 2.5rem;
    background: var(--admin-glass);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-md);
    color: var(--admin-text);
    font-size: 0.9rem;
    min-width: 200px;
    transition: all var(--transition-fast);
}

.table-search input:focus {
    outline: none;
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.table-search input::placeholder {
    color: var(--admin-text-subtle);
}

.table-search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--admin-text-subtle);
}

/* ===================================
   Buttons - Enhanced
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    border: none;
    border-radius: var(--admin-radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--admin-gradient);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--admin-glow);
}

.btn-secondary {
    background: var(--admin-glass);
    color: var(--admin-text);
    border: 1px solid var(--admin-border);
}

.btn-secondary:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: var(--admin-primary);
}

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

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

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

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
}

.btn-warning {
    background: var(--admin-gradient-warning);
    color: white;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--admin-primary);
    color: var(--admin-primary);
}

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

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 0.85rem 1.75rem;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

/* Icon Buttons (Action Buttons) */
.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--admin-radius-sm);
    transition: all var(--transition-fast);
}

.btn-icon.btn-edit {
    background: rgba(59, 130, 246, 0.15);
    color: var(--admin-info);
}

.btn-icon.btn-edit:hover {
    background: var(--admin-info);
    color: white;
}

.btn-icon.btn-delete {
    background: rgba(239, 68, 68, 0.15);
    color: var(--admin-danger);
}

.btn-icon.btn-delete:hover {
    background: var(--admin-danger);
    color: white;
}

.btn-icon.btn-view {
    background: rgba(102, 126, 234, 0.15);
    color: var(--admin-primary);
}

.btn-icon.btn-view:hover {
    background: var(--admin-primary);
    color: white;
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
}

/* ===================================
   Forms - Modern Styling
   =================================== */
.form-group {
    margin-bottom: var(--admin-gap-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--admin-gap-sm);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--admin-text);
}

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

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--admin-glass);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-md);
    color: var(--admin-text);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--admin-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
    background: rgba(102, 126, 234, 0.05);
}

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

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1.25rem;
    padding-right: 2.5rem;
}

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

.form-hint {
    font-size: 0.8rem;
    color: var(--admin-text-subtle);
    margin-top: 0.5rem;
}

.form-error {
    font-size: 0.8rem;
    color: var(--admin-danger);
    margin-top: 0.5rem;
}

/* Form Grid */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--admin-gap-lg);
}

.form-row-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.form-row-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.form-row-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

/* Form label enhancement */
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--admin-text);
}

/* Form hint styling */
.form-hint {
    display: block;
    font-size: 0.8rem;
    color: var(--admin-text-subtle);
    margin-top: 0.35rem;
}

/* Form section title */
.form-section-title {
    margin: 2rem 0 1.5rem;
    padding-bottom: 0.75rem;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--admin-text);
    border-bottom: 1px solid var(--admin-border);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-section-title:first-child {
    margin-top: 0;
}

/* Form actions */
.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--admin-border);
}

/* Student info bar */
.student-info-bar {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: rgba(102, 126, 234, 0.1);
    border-radius: var(--admin-radius-md);
    border: 1px solid rgba(102, 126, 234, 0.2);
    font-size: 0.95rem;
}

/* Checkbox & Radio */
.form-checkbox,
.form-radio {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.form-checkbox input,
.form-radio input {
    width: 18px;
    height: 18px;
    accent-color: var(--admin-primary);
}

/* File Input */
.form-file {
    position: relative;
}

.form-file-input {
    display: none;
}

.form-file-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--admin-glass);
    border: 2px dashed var(--admin-border);
    border-radius: var(--admin-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    justify-content: center;
}

.form-file-label:hover {
    border-color: var(--admin-primary);
    background: rgba(102, 126, 234, 0.05);
}

/* ===================================
   Badges
   =================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.3rem 0.75rem;
    border-radius: var(--admin-radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-primary {
    background: rgba(102, 126, 234, 0.2);
    color: var(--admin-primary);
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--admin-success);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--admin-danger);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--admin-warning);
}

.badge-info {
    background: rgba(59, 130, 246, 0.2);
    color: var(--admin-info);
}

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

.alert-success {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--admin-success);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--admin-danger);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.3);
    color: var(--admin-warning);
}

.alert-info {
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: var(--admin-info);
}

/* ===================================
   Tabs Navigation
   =================================== */
.tabs-container {
    display: flex;
    gap: var(--admin-gap-xs);
    margin-bottom: var(--admin-gap-xl);
    border-bottom: 2px solid var(--admin-border);
    flex-wrap: wrap;
}

.tab-link {
    position: relative;
    padding: 1rem 1.5rem;
    text-decoration: none;
    color: var(--admin-text-muted);
    font-weight: 600;
    font-size: 0.95rem;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--admin-gap-sm);
}

.tab-link:hover {
    color: var(--admin-text);
    background: rgba(102, 126, 234, 0.05);
}

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

.tab-badge {
    position: absolute;
    top: 0.5rem;
    right: 0;
    background: var(--admin-danger);
    color: white;
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: var(--admin-radius-full);
    font-weight: 700;
    min-width: 18px;
    text-align: center;
}

/* Tab Content */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Flex Utilities */
.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--admin-gap-md);
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-start {
    display: flex;
    align-items: flex-start;
}

/* ===================================
   Modals
   =================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    -webkit-backdrop-filter: blur(5px);
    backdrop-filter: blur(5px);
    z-index: 10000;
    align-items: center;
    justify-content: center;
    padding: var(--admin-gap-lg);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--admin-surface);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-20px);
    }

    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

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

.modal-title {
    font-size: 1.2rem;
    font-weight: 700;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--admin-glass);
    border: none;
    border-radius: var(--admin-radius-sm);
    color: var(--admin-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--admin-danger);
    color: white;
}

.modal-body {
    padding: var(--admin-gap-lg);
}

.modal-footer {
    padding: var(--admin-gap-lg);
    border-top: 1px solid var(--admin-border);
    display: flex;
    justify-content: flex-end;
    gap: var(--admin-gap-sm);
}

/* ===================================
   Empty State
   =================================== */
.empty-state {
    text-align: center;
    padding: var(--admin-gap-xl) var(--admin-gap-lg);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: var(--admin-gap-md);
    opacity: 0.4;
}

.empty-state-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--admin-text);
    margin-bottom: var(--admin-gap-sm);
}

.empty-state-text {
    color: var(--admin-text-muted);
    margin-bottom: var(--admin-gap-lg);
}

/* ===================================
   Pagination
   =================================== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: var(--admin-gap-lg);
}

.pagination-btn {
    min-width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--admin-glass);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-sm);
    color: var(--admin-text-muted);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pagination-btn:hover,
.pagination-btn.active {
    background: var(--admin-primary);
    border-color: var(--admin-primary);
    color: white;
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===================================
   Tabs
   =================================== */
.tabs {
    display: flex;
    gap: var(--admin-gap-xs);
    border-bottom: 1px solid var(--admin-border);
    margin-bottom: var(--admin-gap-lg);
    overflow-x: auto;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--admin-text-muted);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--admin-text);
}

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

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ===================================
   Sidebar Overlay (Mobile)
   =================================== */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    -webkit-backdrop-filter: blur(4px);
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1050;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

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

    to {
        transform: rotate(360deg);
    }
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

/* Animation Classes */
.animate-fade-in {
    animation: fadeIn 0.3s ease-out;
}

.animate-fade-up {
    animation: fadeInUp 0.4s ease-out;
}

.animate-fade-down {
    animation: fadeInDown 0.4s ease-out;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

.animate-spin {
    animation: spin 1s linear infinite;
}

/* Loading Spinner */
.loading-spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--admin-border);
    border-top-color: var(--admin-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-spinner-lg {
    width: 40px;
    height: 40px;
    border-width: 4px;
}

/* Loading Overlay */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 12, 41, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    border-radius: inherit;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, var(--admin-glass) 25%, rgba(255, 255, 255, 0.1) 50%, var(--admin-glass) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--admin-radius-sm);
}

@keyframes skeleton-loading {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
}

.skeleton-title {
    height: 1.5em;
    width: 60%;
    margin-bottom: 1em;
}

.skeleton-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.skeleton-card {
    height: 150px;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1200px) {
    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        max-width: 100vw;
    }

    .sidebar-toggle {
        display: flex;
    }

    /* Ensure header doesn't cause horizontal scroll */
    .admin-header {
        max-width: 100vw;
        overflow: visible;
    }
}

@media (max-width: 768px) {
    :root {
        --admin-gap-lg: 1rem;
        --admin-gap-xl: 1.5rem;
    }

    .admin-header {
        padding: var(--admin-gap-sm) var(--admin-gap-md);
    }

    /* Header responsive */
    .header-portal-title {
        font-size: 1.2rem;
    }

    .header-admin-info {
        display: none;
    }

    .header-admin-avatar {
        width: 38px;
        height: 38px;
    }

    /* Hide profile dropdown arrow on mobile */
    .profile-dropdown-arrow {
        display: none;
    }

    .content-container {
        padding: var(--admin-gap-md);
    }

    /* Dashboard cards responsive */
    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: var(--admin-gap-md);
    }

    .stat-card {
        padding: var(--admin-gap-lg);
    }

    .stat-card-value {
        font-size: 2rem;
    }

    .stat-card-label {
        font-size: 0.95rem;
    }

    .page-title {
        font-size: 1.4rem;
    }

    .page-header.flex-between {
        flex-direction: column;
        align-items: stretch;
    }

    /* Form responsive - stack columns on tablet */
    .form-row,
    .form-row-2,
    .form-row-3,
    .form-row-4 {
        grid-template-columns: 1fr;
    }

    .form-group {
        margin-bottom: 1rem;
    }

    .form-input,
    .form-select,
    .form-textarea {
        padding: 0.875rem 1rem;
        font-size: 1rem;
    }

    .form-group label {
        font-size: 0.95rem;
        margin-bottom: 0.5rem;
    }

    .form-hint {
        font-size: 0.85rem;
    }

    /* Form actions responsive */
    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
        justify-content: center;
    }

    /* Form section title responsive */
    .form-section-title {
        font-size: 1rem;
        margin: 1.5rem 0 1rem;
    }

    /* Student info bar responsive */
    .student-info-bar {
        font-size: 0.85rem;
        padding: 0.75rem;
    }
}

/* Fee items responsive */
.fee-item {
    grid-template-columns: 1fr !important;
    gap: 0.5rem;
}

.fee-cards-container {
    grid-template-columns: 1fr !important;
}

/* Grid roster responsive */
.grid-roster {
    grid-template-columns: 1fr !important;
    gap: 0.5rem;
    padding: 1rem;
}

.grid-roster.grid-header {
    display: none;
}

.roster-row {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1rem;
    margin-bottom: 0.5rem;
    border-radius: var(--admin-radius-md);
    background: rgba(255, 255, 255, 0.03);
}

.roster-row .form-input-clean {
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius-sm);
}

/* Mobile form field labels */
.roster-row::before {
    content: none;
}

.mobile-label {
    display: block;
    font-size: 0.75rem;
    color: var(--admin-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.stat-card-value {
    font-size: 1.75rem;
}

.form-row {
    grid-template-columns: 1fr;
}

.table-header {
    flex-direction: column;
    align-items: stretch;
}

.table-filters {
    width: 100%;
}

.table-search input {
    width: 100%;
}

.btn-logout span {
    display: none;
}

.card-header {
    flex-direction: column;
    align-items: stretch;
}

.modal-content {
    margin: var(--admin-gap-md);
    max-height: calc(100vh - 2rem);
}

/* Tabs responsive */
.tabs-container {
    overflow-x: auto;
    flex-wrap: nowrap;
    gap: 0;
}

.tab-link {
    padding: 0.75rem 1rem;
    white-space: nowrap;
    font-size: 0.85rem;
}

/* Sidebar dropdowns responsive - increase height and enable scrolling on mobile */
.sidebar-dropdown-menu.open {
    max-height: 70vh;
    overflow-y: auto;
}

/* Nested dropdowns should stack properly */
.sidebar-nav-item.sidebar-dropdown[style*="margin-left"] .sidebar-dropdown-menu.open {
    max-height: 60vh;
}
}

@media (max-width: 480px) {

    /* Header responsive */
    .header-portal-title {
        font-size: 1.1rem;
    }

    .header-admin-info {
        display: none;
    }

    .header-admin-avatar {
        width: 36px;
        height: 36px;
    }

    .admin-header {
        padding: var(--admin-gap-xs) var(--admin-gap-sm);
        max-width: 100vw;
        overflow: visible;
    }

    .header-left {
        min-width: 0;
        flex: 1;
    }

    .header-right {
        flex-shrink: 0;
    }

    .header-admin-profile {
        padding: 0.25rem 0.5rem;
    }

    /* Glass card mobile padding */
    .glass-card {
        padding: 1rem;
        border-radius: var(--admin-radius-md);
    }

    /* Form inputs touch friendly */
    .form-input,
    .form-select,
    .form-textarea {
        padding: 1rem;
        font-size: 16px;
        /* Prevents zoom on iOS */
    }

    /* Content container mobile fixes */
    .content-container {
        padding: var(--admin-gap-sm);
        max-width: 100vw;
        overflow-x: hidden;
    }

    /* Dashboard grid cards - allow horizontal scroll if needed */
    .dashboard-grid {
        max-width: 100%;
        gap: var(--admin-gap-sm);
    }

    .stat-card {
        padding: var(--admin-gap-md);
        max-width: 100%;
    }

    .stat-card-value {
        font-size: 1.75rem;
    }

    .stat-card-label {
        font-size: 0.9rem;
    }

    .stat-card-icon {
        width: 44px;
        height: 44px;
        font-size: 1.25rem;
    }

    .action-buttons {
        flex-wrap: wrap;
    }

    .page-actions {
        width: 100%;
        flex-direction: column;
    }

    .page-actions .btn {
        width: 100%;
        justify-content: center;
    }

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

    .page-title-icon {
        font-size: 1.1rem;
    }

    /* Sidebar mobile fullscreen */
    .sidebar {
        width: 85vw;
        max-width: 300px;
    }

    .sidebar-header {
        padding: var(--admin-gap-md);
    }

    .sidebar-logo {
        width: 60px;
        height: 60px;
    }

    .sidebar-school-name {
        font-size: 0.9rem;
    }

    /* Cards stack on mobile */
    .card {
        border-radius: var(--admin-radius-md);
    }

    /* Form elements */
    .form-input,
    .form-select,
    .form-textarea {
        padding: 0.75rem;
        font-size: 0.9rem;
    }

    /* Tables scroll */
    .table-wrapper {
        border-radius: var(--admin-radius-sm);
        max-width: 100%;
        overflow: hidden;
    }

    .table-responsive {
        overflow-x: auto;
    }

    .data-table {
        min-width: 500px;
    }

    /* Glass card mobile scroll */
    .glass-card {
        max-width: 100%;
        overflow-x: auto;
    }

    .glass-card>table,
    .glass-card>.data-table {
        min-width: 500px;
    }

    /* Profile dropdown position */
    .profile-dropdown {
        right: -10px;
        min-width: 180px;
    }
}

/* ===================================
   Print Styles
   =================================== */
@media print {

    .sidebar,
    .admin-header,
    .sidebar-overlay,
    .btn,
    .action-buttons {
        display: none !important;
    }

    .main-content {
        margin: 0 !important;
    }

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

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

    body {
        background: white !important;
        color: black !important;
    }
}

/* ===================================
   Utility Classes
   =================================== */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-muted {
    color: var(--admin-text-muted);
}

.text-success {
    color: var(--admin-success);
}

.text-danger {
    color: var(--admin-danger);
}

.text-warning {
    color: var(--admin-warning);
}

.text-primary {
    color: var(--admin-primary);
}

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: var(--admin-gap-sm);
}

.mb-2 {
    margin-bottom: var(--admin-gap-md);
}

.mb-3 {
    margin-bottom: var(--admin-gap-lg);
}

.mb-4 {
    margin-bottom: var(--admin-gap-xl);
}

.mt-0 {
    margin-top: 0;
}

.mt-1 {
    margin-top: var(--admin-gap-sm);
}

.mt-2 {
    margin-top: var(--admin-gap-md);
}

.mt-3 {
    margin-top: var(--admin-gap-lg);
}

.mt-4 {
    margin-top: var(--admin-gap-xl);
}

.flex {
    display: flex;
}

.flex-wrap {
    flex-wrap: wrap;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-1 {
    gap: var(--admin-gap-sm);
}

.gap-2 {
    gap: var(--admin-gap-md);
}

.gap-3 {
    gap: var(--admin-gap-lg);
}

.hidden {
    display: none !important;
}

.w-full {
    width: 100%;
}

/* ===================================
   Enhanced Mobile Responsive - Tables & Cards
   =================================== */

/* Force horizontal scroll for all tables on mobile */
@media (max-width: 768px) {

    /* Tables should always be scrollable horizontally */
    table {
        display: block;
        width: 100%;
        overflow-x: auto;
    }

    /* Timeline container for syllabus needs horizontal scroll */
    .timeline-container {
        overflow-x: auto;
        padding-bottom: 1rem;
    }

    /* Glass card tables */
    .glass-card table,
    .card table {
        min-width: 500px;
    }

    /* Classes grid responsive */
    .classes-grid {
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
    }

    /* Teachers grid responsive */
    .teachers-grid {
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
    }

    /* Student cards responsive */
    .students-grid,
    .student-cards-grid {
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
    }

    /* Class actions buttons stack better */
    .class-actions {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 0.5rem !important;
    }

    .class-action-btn {
        padding: 0.5rem !important;
        font-size: 0.65rem !important;
    }

    /* Page headers stack vertically */
    .flex-between,
    .page-header-actions {
        flex-direction: column !important;
        gap: 1rem !important;
        align-items: stretch !important;
    }

    .page-header-actions {
        flex-direction: row !important;
        flex-wrap: wrap !important;
    }

    .page-header-actions .btn,
    .page-header-actions a.btn {
        flex: 1 1 auto !important;
        min-width: 100px !important;
        text-align: center !important;
        justify-content: center !important;
    }

    /* Modal responsive */
    .modal-content {
        max-width: 95vw !important;
        max-height: 90vh !important;
        overflow-y: auto !important;
        margin: 1rem !important;
    }

    /* Info grids */
    .class-info {
        grid-template-columns: 1fr !important;
    }

    /* Cards */
    .class-card,
    .teacher-card,
    .student-card {
        padding: 1rem !important;
    }

    /* Lesson list horizontal scroll */
    .lesson-list {
        overflow-x: auto;
    }

    /* Timetable table scroll */
    .tt-table {
        min-width: 600px;
    }

    .table-scroll-wrapper {
        overflow-x: auto;
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    .class-actions {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    .class-action-btn span {
        display: none;
    }

    /* Only show emoji on tiny screens */
    .class-action-btn::before {
        font-size: 1.1rem;
    }

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

    .page-subtitle {
        font-size: 0.85rem !important;
    }

    /* Smaller gaps */
    .content-container {
        padding: 0.75rem !important;
    }

    .glass-card {
        padding: 1rem !important;
    }
}