/* 
 * HopeHQ Handyman Student Management System
 * Premium Custom Styling Sheet - Light Theme
 */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-main: #f8fafc;
    --bg-card: #ffffff;
    --bg-card-hover: #ffffff;
    --border-color: #e2e8f0;
    --border-focus: #3b82f6;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --accent: #2563eb;
    --accent-glow: rgba(37, 99, 235, 0.15);
    --accent-success: #10b981;
    --accent-success-bg: #ecfdf5;
    --accent-success-border: #a7f3d0;
    --accent-success-text: #065f46;
    
    --accent-error: #ef4444;
    --accent-error-bg: #fef2f2;
    --accent-error-border: #fca5a5;
    --accent-error-text: #991b1b;
    
    --accent-warning: #f59e0b;
    --accent-warning-bg: #fef3c7;
    --accent-warning-border: #fde68a;
    --accent-warning-text: #92400e;
    
    --accent-info: #06b6d4;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 2px 4px -1px rgba(15, 23, 42, 0.03);
    --shadow-lg: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
}

/* Base resets & scrollbars */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100vh;
    line-height: 1.6;
    background-image: 
        radial-gradient(at 0% 0%, rgba(37, 99, 235, 0.03) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.02) 0px, transparent 50%);
    background-attachment: fixed;
    overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1.25;
}

h1 { font-size: 2.25rem; margin-bottom: 1.5rem; }
h2 { font-size: 1.75rem; margin-bottom: 1.25rem; }
h3 { font-size: 1.25rem; margin-bottom: 1rem; }
a {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition-fast);
}
a:hover {
    color: #1d4ed8;
}

/* Page Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1rem;
}

/* Card Style */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.25rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}
.card:hover {
    transform: translateY(-1px);
    border-color: rgba(15, 23, 42, 0.15);
    box-shadow: var(--shadow-lg);
}

/* Mobile overflow guard: grid/flex items default to min-width:auto, which lets a
   wide table push the whole page sideways instead of scrolling inside its own
   .table-responsive. Forcing min-width:0 lets the inner scroll container work. */
.courses-layout, .admin-grid-layout, .students-layout,
.student-grid-layout, .student-portal-layout, .card {
    min-width: 0;
}
.table-responsive {
    max-width: 100%;
}

/* Navigation Bar */
.navbar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    position: sticky;
    top: 0.5rem;
    z-index: 100;
    margin: 0.5rem auto 1.5rem auto;
    width: calc(100% - 2rem);
    max-width: 1200px;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

/* Sub-navigation tabs */
.sub-nav-tabs {
    display: flex;
    gap: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
    margin-bottom: 2rem;
    margin-top: 0.5rem;
}
.sub-nav-link {
    font-weight: 700;
    font-size: 0.9rem;
    padding: 0.45rem 0.9rem;
    border-radius: 8px;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition-fast);
}
.sub-nav-link:hover {
    color: var(--text-primary);
    background: rgba(15, 23, 42, 0.04);
}
.sub-nav-link.active {
    color: var(--accent);
    background: rgba(37, 99, 235, 0.08);
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.75rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.logo-icon {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-info) 100%);
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: #fff;
    font-size: 1.25rem;
}
.logo-text {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}
.logo-subtitle {
    font-size: 0.75rem;
    color: var(--accent-info);
    font-weight: 600;
    display: block;
    margin-top: -4px;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}
.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    transition: var(--transition-fast);
}
.nav-link:hover {
    color: var(--text-primary);
    background: rgba(15, 23, 42, 0.05);
}
.nav-link.active {
    color: var(--accent);
    background: rgba(37, 99, 235, 0.08);
}
.nav-link.logout {
    color: var(--accent-error);
}
.nav-link.logout:hover {
    background: rgba(239, 68, 68, 0.08);
}
.user-profile-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(15, 23, 42, 0.03);
    padding: 0.4rem 0.8rem;
    border-radius: 99px;
    border: 1px solid var(--border-color);
}
.avatar-nav {
    width: 24px;
    height: 24px;
    background: var(--accent);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}
.user-name-nav {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 600;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.65rem 1.25rem;
    border-radius: 10px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition-fast);
}
.btn-primary {
    background: var(--accent);
    color: #ffffff;
    box-shadow: 0 4px 14px var(--accent-glow);
}
.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--accent-glow);
}
.btn-secondary {
    background: #ffffff;
    color: var(--text-secondary);
    border-color: #cbd5e1;
}
.btn-secondary:hover {
    background: #f1f5f9;
    color: var(--text-primary);
}
.btn-danger {
    background: var(--accent-error);
    color: #ffffff;
}
.btn-danger:hover {
    background: #dc2626;
}
.btn-success {
    background: var(--accent-success);
    color: #ffffff;
}
.btn-success:hover {
    background: #059669;
}
.btn-warning {
    background: var(--accent-warning);
    color: #ffffff;
}
.btn-warning:hover {
    background: #d97706;
}
.btn-info {
    background: var(--accent-info);
    color: #ffffff;
}
.btn-info:hover {
    background: #0891b2;
}
.btn-sm {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
    border-radius: 8px;
}
.btn-block {
    display: flex;
    width: 100%;
}

/* Forms & Inputs */
.form-group {
    margin-bottom: 1.25rem;
}
.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}
.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 10px;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition-fast);
}
.form-control:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}
textarea.form-control {
    min-height: 100px;
    resize: vertical;
}
select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' 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/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1.25rem;
    padding-right: 2.5rem;
}

/* Login Page Specific */
.login-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
    padding: 1rem;
}
.login-card {
    width: 100%;
    max-width: 420px;
    padding: 2.5rem;
    background: #ffffff;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}
.login-header {
    text-align: center;
    margin-bottom: 2rem;
}
.login-header .logo-icon {
    margin: 0 auto 1rem auto;
    width: 50px;
    height: 50px;
    font-size: 1.75rem;
}

/* Dashboard Summary Grid */
.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}
a.stat-card {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}
.stat-card:hover, a.stat-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
}
.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}
.stat-icon.primary { background: rgba(37, 99, 235, 0.1); color: var(--accent); }
.stat-icon.success { background: rgba(16, 185, 129, 0.1); color: var(--accent-success); }
.stat-icon.warning { background: rgba(245, 158, 11, 0.1); color: var(--accent-warning); }
.stat-icon.error { background: rgba(239, 68, 68, 0.1); color: var(--accent-error); }

.stat-details h3 {
    font-size: 1.75rem;
    margin-bottom: 0.1rem;
}
.stat-details p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Tables */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}
.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    background: #ffffff;
}
.table th, .table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}
.table th {
    background-color: #f1f5f9;
    font-weight: 700;
    color: var(--text-secondary);
    font-family: var(--font-heading);
    letter-spacing: 0.02em;
    font-size: 0.85rem;
    text-transform: uppercase;
}
.table tr:last-child td {
    border-bottom: none;
}
.table tr:hover td {
    background-color: #f8fafc;
}

/* Badges / Pill Tags */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 99px;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}
.badge-admin { background: #f3e8ff; color: #7e22ce; }
.badge-student { background: #dbeafe; color: #1d4ed8; }
.badge-present { background: #d1fae5; color: #047857; }
.badge-absent { background: #fee2e2; color: #b91c1c; }
.badge-excused { background: #e5e7eb; color: #4b5563; }
.badge-late { background: #fef3c7; color: #b45309; }

/* Quick Utilities */
.alert {
    padding: 1rem;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid transparent;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.alert-success {
    background-color: var(--accent-success-bg);
    border-color: var(--accent-success-border);
    color: var(--accent-success-text);
}
.alert-danger {
    background-color: var(--accent-error-bg);
    border-color: var(--accent-error-border);
    color: var(--accent-error-text);
}
.flex-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}
.text-center { text-align: center; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }

/* Grid Dashboard Menu */
.action-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}
.action-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-md);
}
.action-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-focus);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.08);
}
.action-icon {
    font-size: 2.25rem;
    color: var(--accent);
}

/* Attendance sheet layout */
.attendance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1.25rem;
    margin-top: 1rem;
}
.attendance-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition-fast);
}
.attendance-card:hover {
    border-color: rgba(15, 23, 42, 0.15);
}
.attendance-options {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 0.75rem;
}
.attendance-radio {
    display: none;
}
.attendance-label {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid #cbd5e1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}
.attendance-label:hover {
    background: #f1f5f9;
}
/* Present colors */
.attendance-radio[value="present"]:checked + .attendance-label {
    background-color: var(--accent-success);
    color: white;
    border-color: var(--accent-success);
}
/* Absent colors */
.attendance-radio[value="absent"]:checked + .attendance-label {
    background-color: var(--accent-error);
    color: white;
    border-color: var(--accent-error);
}
/* Late colors */
.attendance-radio[value="late"]:checked + .attendance-label {
    background-color: var(--accent-warning);
    color: white;
    border-color: var(--accent-warning);
}
/* Excused colors */
.attendance-radio[value="excused"]:checked + .attendance-label {
    background-color: #64748b;
    color: white;
    border-color: #64748b;
}

/* Quiz Design (Take Test) */
.quiz-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.25rem;
    margin-bottom: 1.5rem;
}
.progress-bar-container {
    width: 100%;
    height: 6px;
    background: #e2e8f0;
    border-radius: 10px;
    overflow: hidden;
    margin-top: 1rem;
}
.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent) 0%, var(--accent-info) 100%);
    width: 0%;
    transition: width var(--transition-smooth);
}
.question-item {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.question-text {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}
.options-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.option-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 0.85rem 1.25rem;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}
.option-label:hover {
    background: #f1f5f9;
    border-color: #cbd5e1;
    color: var(--text-primary);
}
.option-radio {
    appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid #cbd5e1;
    border-radius: 50%;
    outline: none;
    transition: var(--transition-fast);
    position: relative;
}
.option-radio:checked {
    border-color: var(--border-focus);
}
.option-radio:checked::before {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    background-color: var(--border-focus);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
.option-label:has(.option-radio:checked) {
    background: #eff6ff;
    border-color: var(--border-focus);
    color: var(--text-primary);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}
.animated-fade {
    animation: fadeIn 0.35s ease-out forwards;
}

/* Responsiveness tweaks */
@media (max-width: 768px) {
    body {
        background-attachment: scroll;
    }
    .container {
        padding: 1rem 0.75rem;
    }
    .nav-container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 0.65rem 1rem;
        gap: 0.5rem;
    }
    .nav-links {
        width: auto;
        display: flex;
        align-items: center;
        gap: 0.75rem;
        justify-content: flex-end;
    }
    .nav-text {
        display: none;
    }
    .nav-link {
        padding: 0.45rem;
        font-size: 1.1rem;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 8px;
    }
    .user-profile-nav {
        padding: 0;
        background: none;
        border: none;
    }
    .user-name-nav {
        display: none;
    }
    .flex-header {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
        margin-bottom: 1.25rem;
    }
    .flex-header .btn {
        width: 100%;
    }
    h1 {
        font-size: 1.75rem;
    }
    h2 {
        font-size: 1.35rem;
    }
    .card {
        padding: 1.25rem;
        border-radius: 12px;
        margin-bottom: 1.25rem;
    }
    .login-card {
        padding: 1.5rem;
        border-radius: 16px;
    }
    .summary-grid {
        gap: 1rem;
        margin-bottom: 1.5rem;
    }
    .stat-card {
        padding: 1rem;
        gap: 0.75rem;
    }
    .table th, .table td {
        padding: 0.75rem 0.85rem;
        font-size: 0.8rem;
    }
    .attendance-options {
        gap: 0.25rem;
    }
    .attendance-label {
        width: 28px;
        height: 28px;
        font-size: 0.7rem;
    }
    /* Stack filter/search bars so they never overflow on narrow screens */
    .card form[action="attendance.php"],
    .card form[action="attendance_report.php"] {
        grid-template-columns: 1fr !important;
    }
    .option-label {
        padding: 0.65rem 0.85rem;
        font-size: 0.85rem;
    }
    /* Mobile offset for sticky quiz header under stacked nav */
    .quiz-header {
        top: 105px !important;
        padding: 1rem;
    }
}

/* Premium Modal System */
.modal-overlay {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
    padding: 1rem;
    box-sizing: border-box;
}
.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    width: 100%;
    max-height: 90vh;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    position: relative;
    display: flex;
    flex-direction: column;
    animation: modalSlideUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    padding: 2rem;
    box-sizing: border-box;
}
.modal-header {
    margin-bottom: 1.25rem;
    position: relative;
    padding-right: 2rem;
}
.modal-body {
    overflow-y: auto;
    flex: 1;
    padding-right: 0.5rem;
    margin-bottom: 1.5rem;
}
.modal-footer {
    display: flex;
    gap: 0.75rem;
    margin-top: auto;
}
.modal-close {
    position: absolute;
    right: 0;
    top: -0.25rem;
    font-size: 1.75rem;
    cursor: pointer;
    color: var(--text-muted);
    font-weight: 300;
    transition: var(--transition-fast);
}
.modal-close:hover {
    color: var(--accent-error);
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@media (max-width: 768px) {
    .modal-overlay {
        padding: 0;
        align-items: flex-end;
        background-color: rgba(15, 23, 42, 0.6);
    }
    .modal-content {
        padding: 1.25rem 1.25rem 2rem 1.25rem;
        border-radius: 20px 20px 0 0;
        max-height: 92vh;
        margin: 0;
        width: 100%;
        border-bottom: none;
        border-left: none;
        border-right: none;
        animation: modalSlideUpMobile 0.25s cubic-bezier(0.32, 0.94, 0.6, 1) forwards;
    }
    .modal-body {
        margin-bottom: 1rem;
        padding-right: 0;
    }
    .modal-footer {
        flex-direction: column-reverse;
        gap: 0.5rem;
        width: 100%;
        padding-top: 0.5rem;
    }
    .modal-footer .btn {
        width: 100% !important;
        margin: 0;
        padding: 0.75rem;
        font-size: 0.9rem;
    }
    .modal-header {
        margin-bottom: 1rem;
        padding-bottom: 0.75rem;
        border-bottom: 1px solid var(--border-color);
    }
    .modal-close {
        right: 0.25rem;
        top: -0.15rem;
        font-size: 2rem;
    }
    .modal-grid,
    .subj-expander-grid {
        grid-template-columns: 1fr !important;
        gap: 1.25rem !important;
    }
    
    /* Make document upload form wrap cleanly on mobile */
    form[action="courses.php"][enctype="multipart/form-data"] {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 0.5rem !important;
    }
    form[action="courses.php"][enctype="multipart/form-data"] input[type="text"],
    form[action="courses.php"][enctype="multipart/form-data"] input[type="file"],
    form[action="courses.php"][enctype="multipart/form-data"] button {
        width: 100% !important;
        max-width: 100% !important;
    }
}

@keyframes modalSlideUpMobile {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

/* Row Hover Highlight */
.student-row {
    transition: var(--transition-fast);
}
.student-row:hover {
    background: rgba(15, 23, 42, 0.02) !important;
}

/* Viewport Lock for Login Screen */
body.login-page {
    overflow: hidden !important;
    height: 100vh !important;
    max-height: 100vh !important;
    margin: 0 !important;
    padding: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}
body.login-page .container {
    padding: 0 !important;
    margin: 0 auto !important;
    width: 100% !important;
    max-width: 420px !important;
    height: auto !important;
}
body.login-page footer {
    display: none !important;
}
body.login-page .login-wrapper {
    padding: 0 1rem;
    width: 100%;
    box-sizing: border-box;
}

/* Mobile Stacking Table (No horizontal scroll) */
@media (max-width: 768px) {
    table.mobile-stack-table, 
    table.mobile-stack-table thead, 
    table.mobile-stack-table tbody, 
    table.mobile-stack-table th, 
    table.mobile-stack-table td, 
    table.mobile-stack-table tr { 
        display: block !important; 
    }
    table.mobile-stack-table thead {
        display: none !important;
    }
    table.mobile-stack-table tr {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: 12px;
        padding: 0.75rem 1rem;
        margin-bottom: 0.75rem;
        box-shadow: var(--shadow-sm);
    }
    table.mobile-stack-table td {
        padding: 0.5rem 0 !important;
        border-bottom: 1px dashed var(--border-color);
        display: flex !important;
        justify-content: space-between;
        align-items: center;
        text-align: right !important;
    }
    table.mobile-stack-table td:last-child {
        border-bottom: none;
    }
    table.mobile-stack-table td::before {
        content: attr(data-label);
        font-weight: 700;
        color: var(--text-secondary);
        float: left;
        text-align: left;
    }
}

/* Mobile Toggle Button */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border-color);
    padding: 0.45rem 0.75rem;
    border-radius: 8px;
    font-size: 1.2rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition-fast);
}
.mobile-menu-toggle:hover {
    background: rgba(15, 23, 42, 0.05);
}

/* Mobile Drawer Overlay Container */
.mobile-drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 9999;
    display: none;
    justify-content: flex-end;
    opacity: 0;
    transition: opacity 0.25s ease;
}
.mobile-drawer-overlay.open {
    opacity: 1;
}
.mobile-drawer-content {
    width: 280px;
    height: 100%;
    background: var(--bg-card);
    border-left: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.25s ease;
}
.mobile-drawer-overlay.open .mobile-drawer-content {
    transform: translateX(0);
}
.mobile-drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem;
    border-bottom: 1px solid var(--border-color);
}
.drawer-title {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1rem;
}
.drawer-close {
    background: none;
    border: none;
    font-size: 1.75rem;
    color: var(--text-secondary);
    cursor: pointer;
}
.mobile-drawer-body {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.drawer-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition-fast);
}
.drawer-link:hover {
    color: var(--text-primary);
    background: rgba(15, 23, 42, 0.04);
}
.drawer-link.drawer-logout {
    color: var(--accent-error);
    margin-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    border-radius: 0;
}
.drawer-profile-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(15, 23, 42, 0.03);
    border-radius: 10px;
    margin-top: 1rem;
    border: 1px solid var(--border-color);
}
.avatar-drawer {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
}
.profile-info-drawer {
    text-align: left;
}

@media (max-width: 768px) {
    .desktop-menu {
        display: none !important;
    }
    .mobile-menu-toggle {
        display: block !important;
    }
}

/* Profile Dropdown Styles */
.user-profile-nav-container {
    position: relative;
    display: inline-block;
}
.profile-dropdown-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(15, 23, 42, 0.03);
    padding: 0.4rem 0.8rem;
    border-radius: 99px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    font-family: inherit;
    font-size: 0.85rem;
    color: var(--text-primary);
    transition: var(--transition-fast);
}
.profile-dropdown-btn:hover {
    background: rgba(15, 23, 42, 0.06);
    border-color: rgba(0, 0, 0, 0.15);
}
.profile-dropdown-menu {
    position: absolute;
    top: 120%;
    right: 0;
    width: 220px;
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
    display: none;
    flex-direction: column;
    z-index: 1000;
}
.profile-dropdown-menu.show {
    display: flex;
}
.dropdown-header-info {
    padding: 0.6rem 1rem;
    font-size: 0.8rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0.35rem;
}
.dropdown-divider {
    height: 1px;
    background: var(--border-color);
    margin: 0.35rem 0;
}
.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.85rem;
    text-decoration: none;
    transition: var(--transition-fast);
}
.dropdown-item:hover {
    color: var(--text-primary);
    background: rgba(15, 23, 42, 0.04);
}
.dropdown-item.logout-item {
    color: var(--accent-error);
}


/* Cohort filter chips (students list etc.) */
.cohort-chips { display: flex; gap: 0.45rem; flex-wrap: wrap; margin-bottom: 1rem; }
.cohort-chips a { display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.35rem 0.8rem; border-radius: 99px; border: 1px solid var(--border-color); background: #fff; color: var(--text-secondary); font-size: 0.8rem; font-weight: 700; }
.cohort-chips a:hover { border-color: var(--accent); color: var(--accent); }
.cohort-chips a.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.cohort-chips .count { background: rgba(15,23,42,0.08); border-radius: 99px; padding: 0 0.45rem; font-size: 0.7rem; }
.cohort-chips a.active .count { background: rgba(255,255,255,0.25); }

/* Desktop nav: keep icon + label on one line and fit 7 admin links */
.nav-links.desktop-menu { gap: 0.2rem; }
.nav-links.desktop-menu .nav-link { display: inline-flex; align-items: center; gap: 0.4rem; white-space: nowrap; padding: 0.5rem 0.65rem; }
.nav-links.desktop-menu .user-profile-nav-container { margin-left: 0.5rem; }
.user-name-nav { white-space: nowrap; }
@media (min-width: 769px) and (max-width: 1240px) {
    .user-name-nav { display: none; }
    .nav-links.desktop-menu .nav-link { padding: 0.45rem 0.5rem; font-size: 0.85rem; }
}
@media (min-width: 769px) and (max-width: 1060px) {
    .nav-links.desktop-menu .nav-text { display: none; }
    .nav-links.desktop-menu .nav-link { font-size: 1.05rem; padding: 0.45rem 0.55rem; }
}