/* ============================================
   KHAWAJA FAREED HIGHER SECONDARY SCHOOL - Main Styles
   ============================================ */

:root {
    --primary-color: #1e3c72;
    --primary-dark: #152b54;
    --primary-light: #2a5298;
    --secondary-color: #3b82f6;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #06b6d4;
    --light-gray: #f9fafb;
    --border-color: #e5e7eb;
    --text-dark: #111827;
    --text-gray: #6b7280;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: var(--text-dark);
    min-height: 100vh;
}

/* ============================================
   LOGIN PAGE
   ============================================ */

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    max-width: 400px;
    width: 100%;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 28px;
}

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

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

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

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 14px;
    transition: all 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: white;
    width: 100%;
}

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

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

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

.btn-secondary {
    background: var(--text-gray);
    color: white;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

/* ============================================
   DASHBOARD LAYOUT
   ============================================ */

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

.sidebar {
    width: 200px;
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
}

.sidebar-header {
    padding: 20px 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h2 {
    font-size: 18px;
    margin-bottom: 5px;
}

.sidebar-header p {
    font-size: 11px;
    opacity: 0.8;
}

.sidebar-menu {
    list-style: none;
    padding: 20px 0;
}

.sidebar-menu li {
    margin-bottom: 5px;
}

.sidebar-menu a {
    display: block;
    padding: 12px 15px;
    color: white;
    text-decoration: none;
    transition: all 0.3s;
    border-left: 3px solid transparent;
    font-size: 14px;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
    background: rgba(255, 255, 255, 0.1);
    border-left-color: var(--success-color);
}

/* Icon styles removed - no icons in menu */

.main-content {
    margin-left: 200px;
    flex: 1;
    padding: 30px;
    background: var(--light-gray);
}

.top-bar {
    background: white;
    padding: 20px 30px;
    margin: -30px -30px 30px -30px;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
}

.top-bar h1 {
    font-size: 24px;
    color: var(--primary-color);
    flex: 1;
    margin: 0;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

/* ============================================
   STATS CARDS
   ============================================ */

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

.stat-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    border-left: 4px solid;
    text-align: center;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.stat-card.primary {
    border-left-color: var(--primary-color);
}

.stat-card.success {
    border-left-color: var(--success-color);
}

.stat-card.warning {
    border-left-color: var(--warning-color);
}

.stat-card.danger {
    border-left-color: var(--danger-color);
}

.stat-card.info {
    border-left-color: var(--info-color);
}

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

.stat-title {
    color: var(--text-gray);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-dark);
}

/* ============================================
   CARDS & TABLES
   ============================================ */

.card {
    background: white;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.card-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(to right, #f9fafb 0%, white 100%);
}

.card-header h3 {
    font-size: 18px;
    color: var(--primary-color);
    margin: 0;
}

.card-body {
    padding: 20px;
}

.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

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

.table-responsive::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

.table-responsive::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
}

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

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

table thead {
    background: var(--light-gray);
}

table th,
table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

table th {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 14px;
}

table td {
    font-size: 14px;
}

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

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background: #d1fae5;
    color: var(--success-color);
}

.badge-danger {
    background: #fee2e2;
    color: var(--danger-color);
}

.badge-warning {
    background: #fef3c7;
    color: #d97706;
}

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

/* ============================================
   SEARCH & FILTERS
   ============================================ */

.search-filters {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.search-box {
    flex: 1;
    min-width: 250px;
}

.search-box input {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
}

/* ============================================
   MODALS
   ============================================ */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 10px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-header h3 {
    font-size: 18px;
    color: var(--primary-color);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.close {
    cursor: pointer;
    font-size: 24px;
    color: var(--text-gray);
}

/* ============================================
   ALERTS
   ============================================ */

.alert {
    padding: 15px 20px;
    border-radius: 5px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.alert-success {
    background: #d1fae5;
    color: var(--success-color);
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: #fee2e2;
    color: var(--danger-color);
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background: #fef3c7;
    color: #d97706;
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background: #dbeafe;
    color: var(--info-color);
    border-left: 4px solid var(--info-color);
}

/* ============================================
   STUDENT CARDS
   ============================================ */

.students-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.student-card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    border-left: 4px solid var(--primary-color);
}

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

.student-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.student-avatar {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    font-weight: 600;
}

.student-info h4 {
    margin-bottom: 5px;
    color: var(--primary-color);
}

.student-info p {
    font-size: 13px;
    color: var(--text-gray);
}

.student-stats {
    margin: 15px 0;
    padding: 15px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.student-stat-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 14px;
}

.student-stat-row:last-child {
    margin-bottom: 0;
}

.student-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

/* ============================================
   RESPONSIVE
   ============================================ */

/* Hamburger Menu Button */
.menu-toggle {
    display: none;
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 10px 12px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 20px;
    z-index: 1001;
    position: relative;
}

.menu-toggle:hover {
    background: var(--primary-dark);
}

/* Mobile Overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
}

.sidebar-overlay.show {
    display: block;
}

/* Sidebar Toggle State */
.sidebar.mobile-open {
    transform: translateX(0);
    z-index: 999;
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 999;
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 15px;
    }
    
    .top-bar {
        padding: 15px;
        position: relative;
        z-index: 1000;
        flex-wrap: wrap;
    }
    
    .top-bar h1 {
        font-size: 18px;
        flex: 1;
        min-width: 0;
    }
    
    .user-info {
        font-size: 12px;
    }
    
    .user-info > div:first-child > div:first-child {
        font-size: 12px !important;
    }
    
    .user-info > div:first-child > div:last-child {
        font-size: 10px !important;
    }
    
    .user-avatar {
        width: 32px !important;
        height: 32px !important;
        font-size: 12px !important;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .students-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

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

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

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

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

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

.mt-10 {
    margin-top: 10px;
}

.mt-20 {
    margin-top: 20px;
}

.mb-10 {
    margin-bottom: 10px;
}

.mb-20 {
    margin-bottom: 20px;
}

.d-flex {
    display: flex;
}

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

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

.gap-10 {
    gap: 10px;
}

.gap-20 {
    gap: 20px;
}