/* Main CSS - School Management System */
/* Color Scheme */
:root {
    /* Light Mode Colors */
    --primary-blue: #2D5BFF;
    --secondary-purple: #6C5CE7;
    --accent-orange: #FFA726;
    --accent-yellow: #FFD93D;
    --success-green: #00D68F;
    --danger-red: #FF3D71;
    --warning-orange: #FFAA00;
    --info-blue: #0095FF;
    
    --bg-primary: #F8F9FA;
    --bg-secondary: #FFFFFF;
    --bg-card: #FFFFFF;
    --text-primary: #2E3A59;
    --text-secondary: #8F9BB3;
    --border-color: #E4E9F2;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.12);
}

[data-theme="dark"] {
    /* Dark Mode Colors */
    --bg-primary: #0A0E27;
    --bg-secondary: #151A30;
    --bg-card: #1A1F36;
    --text-primary: #FFFFFF;
    --text-secondary: #8F9BB3;
    --border-color: #2E3A59;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 4px 20px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

a {
    text-decoration: none;
    color: var(--primary-blue);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--secondary-purple);
}

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-hover);
}

.theme-toggle i {
    font-size: 20px;
    color: var(--accent-orange);
}

/* Login Page Styles */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.login-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 1200px;
    width: 90%;
    background: var(--bg-card);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-hover);
}

.login-box {
    padding: 60px 50px;
}

.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.login-header .logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.login-header .logo i {
    font-size: 40px;
    color: white;
}

.login-header h1 {
    font-size: 28px;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert i {
    font-size: 18px;
}

.alert-error {
    background: rgba(255, 61, 113, 0.1);
    color: var(--danger-red);
    border: 1px solid var(--danger-red);
}

.alert-success {
    background: rgba(0, 214, 143, 0.1);
    color: var(--success-green);
    border: 1px solid var(--success-green);
}

.alert-warning {
    background: rgba(255, 170, 0, 0.1);
    color: var(--warning-orange);
    border: 1px solid var(--warning-orange);
}

.alert-info {
    background: rgba(0, 149, 255, 0.1);
    color: var(--info-blue);
    border: 1px solid var(--info-blue);
}

/* Form Styles */
.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
}

.form-group label i {
    margin-right: 5px;
    color: var(--primary-blue);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(45, 91, 255, 0.1);
}

.password-input {
    position: relative;
}

.toggle-password {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: var(--text-secondary);
}

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

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
}

.remember-me input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

.forgot-password {
    font-size: 14px;
    color: var(--primary-blue);
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(45, 91, 255, 0.3);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

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

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

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

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

.btn-sm {
    padding: 8px 16px;
    font-size: 12px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

/* Login Footer */
.login-footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.login-footer p {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 5px;
}

.login-footer strong {
    color: var(--primary-blue);
}

.copyright {
    font-size: 12px !important;
}

/* Login Illustration */
.login-illustration {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    padding: 60px 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.illustration-content {
    text-align: center;
}

.illustration-content h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.illustration-content > p {
    font-size: 16px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.feature-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.feature-item i {
    font-size: 30px;
    margin-bottom: 10px;
    display: block;
}

.feature-item span {
    font-size: 14px;
    display: block;
}

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

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--bg-card);
    border-right: 1px solid var(--border-color);
    padding: 20px 0;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: all 0.3s ease;
}

.sidebar-header {
    padding: 0 20px 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.sidebar-logo-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-logo-icon i {
    font-size: 24px;
    color: white;
}

.sidebar-logo-text h2 {
    font-size: 18px;
    margin-bottom: 2px;
}

.sidebar-logo-text p {
    font-size: 12px;
    color: var(--text-secondary);
}

.sidebar-menu {
    padding: 20px 0;
}

.menu-section {
    margin-bottom: 30px;
}

.menu-title {
    padding: 0 20px;
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.menu-item {
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    cursor: pointer;
}

.menu-item:hover {
    background: rgba(45, 91, 255, 0.1);
    color: var(--primary-blue);
}

.menu-item.active {
    background: linear-gradient(90deg, rgba(45, 91, 255, 0.1), transparent);
    color: var(--primary-blue);
    border-left: 3px solid var(--primary-blue);
}

.menu-item i {
    font-size: 18px;
    width: 20px;
}

.menu-item span {
    font-size: 14px;
    font-weight: 500;
}

.menu-badge {
    margin-left: auto;
    background: var(--danger-red);
    color: white;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
}

/* Main Content */
.main-content {
    margin-left: 280px;
    flex: 1;
    background: var(--bg-primary);
    min-height: 100vh;
}

/* Header */
.header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left h1 {
    font-size: 24px;
    margin-bottom: 5px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

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

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

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.search-box {
    position: relative;
}

.search-box input {
    padding: 10px 40px 10px 15px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    width: 300px;
    transition: all 0.3s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-blue);
    width: 350px;
}

.search-box i {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.header-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
}

.header-icon:hover {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
}

.header-icon:hover i {
    color: white;
}

.header-icon i {
    font-size: 18px;
    color: var(--text-secondary);
}

.notification-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--danger-red);
    color: white;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    font-size: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 10px;
    transition: all 0.3s ease;
}

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

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    overflow: hidden;
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
}

.user-info h4 {
    font-size: 14px;
    margin-bottom: 2px;
}

.user-info p {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Content Area */
.content {
    padding: 30px;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: 15px;
    padding: 25px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-blue), var(--secondary-purple));
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-icon.blue {
    background: rgba(45, 91, 255, 0.1);
    color: var(--primary-blue);
}

.stat-icon.purple {
    background: rgba(108, 92, 231, 0.1);
    color: var(--secondary-purple);
}

.stat-icon.orange {
    background: rgba(255, 167, 38, 0.1);
    color: var(--accent-orange);
}

.stat-icon.green {
    background: rgba(0, 214, 143, 0.1);
    color: var(--success-green);
}

.stat-icon.red {
    background: rgba(255, 61, 113, 0.1);
    color: var(--danger-red);
}

.stat-trend {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 6px;
}

.stat-trend.up {
    background: rgba(0, 214, 143, 0.1);
    color: var(--success-green);
}

.stat-trend.down {
    background: rgba(255, 61, 113, 0.1);
    color: var(--danger-red);
}

.stat-body h3 {
    font-size: 28px;
    margin-bottom: 5px;
}

.stat-body p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: 15px;
    padding: 25px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
    font-size: 18px;
}

.card-actions {
    display: flex;
    gap: 10px;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

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

table thead {
    background: var(--bg-secondary);
}

table th {
    padding: 15px;
    text-align: left;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

table td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

table tbody tr {
    transition: all 0.3s ease;
}

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

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: rgba(0, 214, 143, 0.1);
    color: var(--success-green);
}

.badge-danger {
    background: rgba(255, 61, 113, 0.1);
    color: var(--danger-red);
}

.badge-warning {
    background: rgba(255, 170, 0, 0.1);
    color: var(--warning-orange);
}

.badge-info {
    background: rgba(0, 149, 255, 0.1);
    color: var(--info-blue);
}

.badge-primary {
    background: rgba(45, 91, 255, 0.1);
    color: var(--primary-blue);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .sidebar {
        width: 70px;
    }
    
    .sidebar-logo-text,
    .menu-title,
    .menu-item span {
        display: none;
    }
    
    .main-content {
        margin-left: 70px;
    }
    
    .login-container {
        grid-template-columns: 1fr;
    }
    
    .login-illustration {
        display: none;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .search-box input {
        width: 200px;
    }
    
    .search-box input:focus {
        width: 250px;
    }
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-purple));
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    cursor: pointer;
    box-shadow: var(--shadow-hover);
    z-index: 1001;
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }
}

/* Loading Spinner */
.spinner {
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-blue);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }
.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }
.p-1 { padding: 10px; }
.p-2 { padding: 20px; }
.p-3 { padding: 30px; }
.d-flex { display: flex; }
.align-items-center { align-items: center; }
.justify-content-between { justify-content: space-between; }
.gap-1 { gap: 10px; }
.gap-2 { gap: 20px; }
.gap-3 { gap: 30px; }