/**
 * Attendance Tracker Styles
 * 
 * Mobile-first design for classroom attendance tracking
 */

/* ================================
   Variables
   ================================ */
:root {
    --attendance-primary: #4f46e5;
    --attendance-primary-hover: #4338ca;
    --attendance-success: #22c55e;
    --attendance-success-light: #dcfce7;
    --attendance-danger: #ef4444;
    --attendance-danger-light: #fee2e2;
    --attendance-warning: #f59e0b;
    --attendance-gray-100: #f3f4f6;
    --attendance-gray-200: #e5e7eb;
    --attendance-gray-300: #d1d5db;
    --attendance-gray-400: #9ca3af;
    --attendance-gray-500: #6b7280;
    --attendance-gray-600: #4b5563;
    --attendance-gray-700: #374151;
    --attendance-gray-800: #1f2937;
    --attendance-gray-900: #111827;
    --attendance-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --attendance-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --attendance-radius: 0.5rem;
    --attendance-radius-lg: 0.75rem;
}

/* ================================
   Tracker Layout (base - overridden by tracker-specific rules below)
   ================================ */

.attendance-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: white;
    border-bottom: 1px solid var(--attendance-gray-200);
    position: sticky;
    top: 0;
    z-index: 100;
}

.attendance-header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.attendance-back-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border: none;
    background: var(--attendance-gray-100);
    border-radius: var(--attendance-radius);
    color: var(--attendance-gray-600);
    cursor: pointer;
    transition: all 0.15s ease;
}

.attendance-back-btn:hover {
    background: var(--attendance-gray-200);
}

.attendance-header h1 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--attendance-gray-800);
    margin: 0;
}

.attendance-header-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.attendance-stats {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.875rem;
}

.attendance-stat {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.375rem 0.625rem;
    border-radius: var(--attendance-radius);
    font-weight: 500;
}

.attendance-stat-present {
    background: var(--attendance-success-light);
    color: #166534;
}

.attendance-stat-absent {
    background: var(--attendance-danger-light);
    color: #991b1b;
}

.attendance-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border: none;
    background: var(--attendance-gray-100);
    border-radius: var(--attendance-radius);
    color: var(--attendance-gray-600);
    cursor: pointer;
    transition: all 0.15s ease;
}

.attendance-menu-btn:hover {
    background: var(--attendance-gray-200);
}

/* ================================
   Main Content
   ================================ */
.attendance-main {
    flex: 1;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* ================================
   Quick Count Section
   ================================ */
.quick-count-section {
    background: white;
    border-radius: var(--attendance-radius-lg);
    padding: 1rem;
    box-shadow: var(--attendance-shadow);
}

.quick-count-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.quick-count-header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--attendance-gray-700);
    margin: 0;
}

.quick-count-total {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--attendance-gray-500);
}

.quick-count-total-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--attendance-primary);
}

.quick-count-groups {
    display: flex;
    gap: 1rem;
}

.quick-count-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--attendance-gray-100);
    border-radius: var(--attendance-radius);
}

.quick-count-group-boys {
    background: #eff6ff;
}

.quick-count-group-girls {
    background: #fdf2f8;
}

.quick-count-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--attendance-gray-500);
}

.quick-count-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--attendance-gray-800);
    line-height: 1;
}

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

.quick-count-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border: none;
    border-radius: var(--attendance-radius);
    font-size: 1.25rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}

.quick-count-btn-plus {
    background: var(--attendance-success);
    color: white;
}

.quick-count-btn-plus:hover {
    background: #16a34a;
}

.quick-count-btn-minus {
    background: var(--attendance-gray-300);
    color: var(--attendance-gray-700);
}

.quick-count-btn-minus:hover {
    background: var(--attendance-gray-400);
}

.quick-count-btn.btn-pressed {
    transform: scale(0.95);
}

/* ================================
   Desk Grid Section
   ================================ */
.desk-grid-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: white;
    border-radius: var(--attendance-radius-lg);
    padding: 1rem;
    box-shadow: var(--attendance-shadow);
}

.desk-grid-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.desk-grid-header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--attendance-gray-700);
    margin: 0;
}

.desk-grid-actions {
    display: flex;
    gap: 0.5rem;
}

.desk-grid-action-btn {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--attendance-gray-300);
    background: white;
    border-radius: var(--attendance-radius);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--attendance-gray-600);
    cursor: pointer;
    transition: all 0.15s ease;
}

.desk-grid-action-btn:hover {
    background: var(--attendance-gray-100);
    border-color: var(--attendance-gray-400);
}

.desk-grid-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 200px;
}

#desk-grid {
    flex: 1;
    display: grid;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--attendance-gray-100);
    border-radius: var(--attendance-radius);
}

/* ================================
   Desk Styles (used in layout editor)
   ================================ */
.desk {
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid transparent;
    border-radius: var(--attendance-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.1s ease;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.desk-present {
    background: var(--attendance-success);
    color: white;
    border-color: #16a34a;
}

.desk-present:hover {
    background: #16a34a;
}

.desk-absent {
    background: var(--attendance-danger-light);
    color: var(--attendance-danger);
    border-color: var(--attendance-danger);
}

.desk-absent:hover {
    background: #fecaca;
}

.desk-inactive {
    background: var(--attendance-gray-200);
    color: var(--attendance-gray-400);
    border-color: transparent;
    cursor: not-allowed;
    opacity: 0.5;
}

.desk:active:not(.desk-inactive) {
    transform: scale(0.95);
}

/* ================================
   Desk Grid Legend
   ================================ */
.desk-grid-legend {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--attendance-gray-200);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.75rem;
    color: var(--attendance-gray-500);
}

.legend-color {
    width: 1rem;
    height: 1rem;
    border-radius: 0.25rem;
    border: 1px solid var(--attendance-gray-300);
}

.legend-color-present {
    background: var(--attendance-success);
    border-color: #16a34a;
}

.legend-color-absent {
    background: var(--attendance-danger-light);
    border-color: var(--attendance-danger);
}

.legend-color-inactive {
    background: var(--attendance-gray-200);
    border-color: var(--attendance-gray-300);
}

/* ================================
   Footer
   ================================ */
.attendance-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    background: white;
    border-top: 1px solid var(--attendance-gray-200);
}

.attendance-footer-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--attendance-radius);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

.attendance-footer-btn-primary {
    background: var(--attendance-primary);
    color: white;
}

.attendance-footer-btn-primary:hover {
    background: var(--attendance-primary-hover);
}

.attendance-footer-btn-secondary {
    background: var(--attendance-gray-100);
    color: var(--attendance-gray-700);
}

.attendance-footer-btn-secondary:hover {
    background: var(--attendance-gray-200);
}

/* ================================
   Modal Base Styles
   ================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 1rem;
}

.modal-container {
    background: white;
    border-radius: var(--attendance-radius-lg);
    width: 100%;
    max-width: 40rem;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--attendance-shadow-lg);
}

.modal-container-small {
    max-width: 24rem;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--attendance-gray-200);
}

.modal-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--attendance-gray-800);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border: none;
    background: var(--attendance-gray-100);
    border-radius: var(--attendance-radius);
    color: var(--attendance-gray-500);
    cursor: pointer;
    transition: all 0.15s ease;
}

.modal-close:hover {
    background: var(--attendance-gray-200);
    color: var(--attendance-gray-700);
}

.modal-body {
    flex: 1;
    padding: 1.25rem;
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: 1rem 1.25rem;
    border-top: 1px solid var(--attendance-gray-200);
    background: var(--attendance-gray-100);
}

.modal-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    padding: 0.625rem 1rem;
    border: none;
    border-radius: var(--attendance-radius);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

.modal-btn-primary {
    background: var(--attendance-primary);
    color: white;
}

.modal-btn-primary:hover {
    background: var(--attendance-primary-hover);
}

.modal-btn-secondary {
    background: white;
    color: var(--attendance-gray-700);
    border: 1px solid var(--attendance-gray-300);
}

.modal-btn-secondary:hover {
    background: var(--attendance-gray-100);
}

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

.modal-btn-danger:hover {
    background: #dc2626;
}

/* ================================
   Layout Editor Modal
   ================================ */
.layout-editor-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--attendance-gray-200);
}

.layout-control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.layout-control-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--attendance-gray-600);
}

.layout-control-group select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--attendance-gray-300);
    border-radius: var(--attendance-radius);
    font-size: 0.875rem;
    color: var(--attendance-gray-700);
    background: white;
}

.layout-apply-btn {
    padding: 0.5rem 1rem;
    background: var(--attendance-primary);
    color: white;
    border: none;
    border-radius: var(--attendance-radius);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

.layout-apply-btn:hover {
    background: var(--attendance-primary-hover);
}

#layout-grid {
    display: grid;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--attendance-gray-100);
    border-radius: var(--attendance-radius);
    margin-bottom: 1rem;
    min-height: 200px;
}

.layout-desk {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
    min-width: 2rem;
    min-height: 2rem;
    border: 2px dashed var(--attendance-gray-300);
    border-radius: var(--attendance-radius);
    font-size: 0.625rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    user-select: none;
}

.layout-desk-active {
    background: var(--attendance-success-light);
    border-color: var(--attendance-success);
    border-style: solid;
    color: #166534;
}

.layout-desk-inactive {
    background: var(--attendance-gray-200);
    border-color: var(--attendance-gray-300);
    color: var(--attendance-gray-400);
}

.layout-desk:hover {
    transform: scale(1.05);
}

.layout-quick-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.layout-quick-action-btn {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--attendance-gray-300);
    background: white;
    border-radius: var(--attendance-radius);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--attendance-gray-600);
    cursor: pointer;
    transition: all 0.15s ease;
}

.layout-quick-action-btn:hover {
    background: var(--attendance-gray-100);
    border-color: var(--attendance-gray-400);
}

/* ================================
   Student ID Modal
   ================================ */
.student-id-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

/* ================================
   Options Menu
   ================================ */
.options-menu {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: none;
    align-items: flex-end;
    justify-content: center;
}

.options-menu.active {
    display: flex;
}

.options-menu-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
}

.options-menu-content {
    position: relative;
    width: 100%;
    max-width: 24rem;
    background: white;
    border-radius: var(--attendance-radius-lg) var(--attendance-radius-lg) 0 0;
    overflow: hidden;
    animation: slideUp 0.2s ease;
}

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

.options-menu-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--attendance-gray-200);
}

.options-menu-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--attendance-gray-800);
    margin: 0;
}

.options-menu-items {
    padding: 0.5rem;
}

.options-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.875rem 1rem;
    border: none;
    background: white;
    border-radius: var(--attendance-radius);
    font-size: 0.9375rem;
    color: var(--attendance-gray-700);
    cursor: pointer;
    transition: all 0.15s ease;
    text-align: left;
}

.options-item:hover {
    background: var(--attendance-gray-100);
}

.options-item i {
    width: 1.25rem;
    text-align: center;
    color: var(--attendance-gray-500);
}

.options-item-danger {
    color: var(--attendance-danger);
}

.options-item-danger i {
    color: var(--attendance-danger);
}

.options-item-danger:hover {
    background: var(--attendance-danger-light);
}

.options-divider {
    height: 1px;
    background: var(--attendance-gray-200);
    margin: 0.5rem 0;
}

.options-menu-footer {
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--attendance-gray-200);
    background: var(--attendance-gray-100);
}

.options-upgrade {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: linear-gradient(135deg, #f59e0b, #f97316);
    color: white;
    border-radius: var(--attendance-radius);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.15s ease;
}

.options-upgrade:hover {
    filter: brightness(1.05);
}

/* ================================
   Form Styles
   ================================ */
.form-group {
    margin-bottom: 1rem;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--attendance-gray-700);
    margin-bottom: 0.375rem;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group select {
    width: 100%;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--attendance-gray-300);
    border-radius: var(--attendance-radius);
    font-size: 0.9375rem;
    color: var(--attendance-gray-700);
    transition: all 0.15s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--attendance-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* ================================
   Delete Warning
   ================================ */
.delete-warning {
    padding: 1rem;
    background: var(--attendance-danger-light);
    border-radius: var(--attendance-radius);
    color: #991b1b;
    font-size: 0.9375rem;
    line-height: 1.5;
    margin: 0;
}

/* ================================
   Responsive Adjustments
   ================================ */
@media (min-width: 640px) {
    .quick-count-section {
        padding: 1.5rem;
    }
    
    .desk-grid-section {
        padding: 1.5rem;
    }
}

@media (min-width: 1024px) {
    .quick-count-section {
        width: 280px;
        flex-shrink: 0;
    }
    
    .quick-count-groups {
        flex-direction: column;
    }
    
    .desk-grid-section {
        flex: 1;
    }
}

/* ================================
   Landing Page Styles
   ================================ */
.attendance-landing {
    min-height: 100vh;
}

.landing-section {
    padding: 3rem 1rem;
}

.landing-hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative;
}

.hero-layout {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

@media (min-width: 1024px) {
    .hero-layout {
        flex-direction: row;
        align-items: center;
        gap: 4rem;
    }
    
    .hero-form-side,
    .hero-copy-side {
        flex: 1;
    }
}

.hero-form-side {
    order: 1;
}

.hero-copy-side {
    order: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--attendance-primary);
    color: white;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--attendance-gray-900);
    line-height: 1.1;
    margin: 0 0 1.5rem 0;
}

@media (min-width: 640px) {
    .hero-title {
        font-size: 3.5rem;
    }
}

.text-gradient {
    background: linear-gradient(135deg, var(--attendance-primary), #06b6d4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--attendance-gray-600);
    line-height: 1.6;
    margin: 0 0 2rem 0;
}

.hero-preview-grid {
    background: white;
    border-radius: var(--attendance-radius-lg);
    padding: 1rem;
    box-shadow: var(--attendance-shadow-lg);
    margin-bottom: 2rem;
}

.preview-grid-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
}

.preview-label {
    font-weight: 600;
    color: var(--attendance-gray-700);
}

.preview-count {
    color: var(--attendance-success);
    font-weight: 500;
}

.preview-mini-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.375rem;
}

.preview-desk {
    aspect-ratio: 1;
    border-radius: 0.25rem;
}

.preview-desk.present {
    background: var(--attendance-success);
}

.preview-desk.absent {
    background: var(--attendance-danger-light);
    border: 1px solid var(--attendance-danger);
}

.hero-features-mini {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.hero-feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.9375rem;
    color: var(--attendance-gray-700);
}

.hero-feature-item i {
    color: var(--attendance-success);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--attendance-gray-400);
    font-size: 0.75rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-8px); }
}

/* ================================
   Setup Form Card
   ================================ */
.setup-form-card {
    background: white;
    border-radius: var(--attendance-radius-lg);
    padding: 2rem;
    box-shadow: var(--attendance-shadow-lg);
    border: 1px solid var(--attendance-gray-200);
}

.setup-form-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.setup-form-header i {
    font-size: 1.5rem;
    color: var(--attendance-primary);
}

.setup-form-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--attendance-gray-800);
    margin: 0;
}

.setup-form .form-group {
    margin-bottom: 1.25rem;
}

.setup-form label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--attendance-gray-700);
    margin-bottom: 0.5rem;
}

.setup-form label i {
    color: var(--attendance-gray-400);
    font-size: 0.875rem;
}

.setup-form input,
.setup-form select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--attendance-gray-300);
    border-radius: var(--attendance-radius);
    font-size: 1rem;
    color: var(--attendance-gray-700);
    transition: all 0.15s ease;
}

.setup-form input:focus,
.setup-form select:focus {
    outline: none;
    border-color: var(--attendance-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

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

.form-preview {
    background: var(--attendance-gray-100);
    border-radius: var(--attendance-radius);
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.form-preview .preview-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--attendance-gray-500);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.total-seats-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    background: var(--attendance-primary);
    color: white;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: none;
}

.preview-mini-layout {
    display: grid;
    gap: 0.25rem;
    width: 100%;
}

.preview-desk-mini {
    aspect-ratio: 1;
    background: var(--attendance-gray-300);
    border-radius: 0.125rem;
}

.preview-ellipsis {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--attendance-gray-400);
    font-size: 0.75rem;
}

.setup-submit-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--attendance-primary);
    color: white;
    border: none;
    border-radius: var(--attendance-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
}

.setup-submit-btn:hover {
    background: var(--attendance-primary-hover);
}

.setup-note {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 1rem 0 0 0;
    padding: 0.75rem;
    background: #eff6ff;
    border-radius: var(--attendance-radius);
    font-size: 0.8125rem;
    color: #1e40af;
}

.setup-note i {
    flex-shrink: 0;
}

/* Existing Classroom Section */
.setup-existing {
    margin-top: 1.5rem;
}

.existing-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.existing-divider::before,
.existing-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--attendance-gray-200);
}

.existing-divider span {
    font-size: 0.75rem;
    color: var(--attendance-gray-400);
    text-transform: uppercase;
}

.existing-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: var(--attendance-success-light);
    border: 1px solid var(--attendance-success);
    border-radius: var(--attendance-radius);
}

.existing-info h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: #166534;
    margin: 0 0 0.25rem 0;
}

.existing-info p {
    font-size: 0.8125rem;
    color: #15803d;
    margin: 0;
}

.existing-resume-btn {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.625rem 1rem;
    background: var(--attendance-success);
    color: white;
    border: none;
    border-radius: var(--attendance-radius);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
}

.existing-resume-btn:hover {
    background: #16a34a;
}

/* ================================
   Features Section
   ================================ */
.features-section {
    background: white;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--attendance-gray-900);
    text-align: center;
    margin: 0 0 0.75rem 0;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--attendance-gray-500);
    text-align: center;
    margin: 0 0 3rem 0;
}

.features-grid {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 640px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    padding: 1.5rem;
    background: var(--attendance-gray-100);
    border-radius: var(--attendance-radius-lg);
    text-align: center;
}

.feature-icon {
    width: 3.5rem;
    height: 3.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem auto;
    background: var(--attendance-primary);
    color: white;
    border-radius: 50%;
    font-size: 1.25rem;
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--attendance-gray-800);
    margin: 0 0 0.5rem 0;
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--attendance-gray-600);
    line-height: 1.5;
    margin: 0;
}

/* ================================
   Tracker Header (Different from landing)
   ================================ */
.tracker-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    background: white;
    border-bottom: 1px solid var(--attendance-gray-200);
    flex-shrink: 0;
    z-index: 100;
}

.header-back {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    background: var(--attendance-gray-100);
    border-radius: var(--attendance-radius);
    color: var(--attendance-gray-600);
    text-decoration: none;
    transition: all 0.15s ease;
    font-size: 0.75rem;
    flex-shrink: 0;
}

.header-back:hover {
    background: var(--attendance-gray-200);
}

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

.header-info h1.header-title {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--attendance-gray-800);
    margin: 0;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.header-meta {
    font-size: 0.625rem;
    color: var(--attendance-gray-500);
    line-height: 1.2;
}

/* Inline boys/girls counters in header - single horizontal row */
.header-counters {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    margin-left: auto;
    flex-shrink: 0;
}

.header-counter {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.1875rem 0.375rem;
    border-radius: var(--attendance-radius);
}

.header-counter-boys {
    background: #eff6ff;
}

.header-counter-girls {
    background: #fdf2f8;
}

.header-counter-label {
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--attendance-gray-500);
    white-space: nowrap;
}

.header-counter-controls {
    display: flex;
    align-items: center;
    gap: 0.1875rem;
}

.hc-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.25rem;
    height: 1.25rem;
    border: none;
    border-radius: var(--attendance-radius);
    font-size: 0.5625rem;
    cursor: pointer;
    transition: all 0.1s ease;
}

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

.hc-btn-minus {
    background: var(--attendance-gray-300);
    color: var(--attendance-gray-700);
}

.hc-btn:active {
    transform: scale(0.9);
}

.hc-value {
    font-size: 0.8125rem;
    font-weight: 700;
    min-width: 0.875rem;
    text-align: center;
    color: var(--attendance-gray-800);
}

.header-counter-total {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.1875rem 0.5rem;
    background: var(--attendance-primary);
    color: white;
    border-radius: var(--attendance-radius);
}

.header-counter-total-label {
    font-size: 0.625rem;
    font-weight: 600;
    opacity: 0.8;
}

.header-counter-total-value {
    font-size: 0.875rem;
    font-weight: 700;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    flex-shrink: 0;
}

.header-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    border: none;
    background: var(--attendance-gray-100);
    border-radius: var(--attendance-radius);
    color: var(--attendance-gray-600);
    cursor: pointer;
    transition: all 0.15s ease;
    font-size: 0.75rem;
}

.header-btn:hover {
    background: var(--attendance-gray-200);
}

/* ================================
   Tracker Main Content
   ================================ */
.tracker-main {
    flex: 1;
    padding: 0.25rem;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 0;
}

/* Tracker: fills remaining viewport below site header */
.attendance-tracker {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 120px);
    background: var(--attendance-gray-100);
    overflow: hidden;
}

.desk-grid-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    background: white;
    border-radius: var(--attendance-radius);
    padding: 0.25rem;
}

.desk-grid-panel .desk-grid-header {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 0 0.25rem 0.25rem;
    flex-shrink: 0;
}

.desk-grid-panel .desk-grid-header h2 {
    display: none;
}

.grid-actions {
    display: flex;
    gap: 0.375rem;
}

.grid-action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    border: 1px solid var(--attendance-gray-300);
    background: white;
    border-radius: var(--attendance-radius);
    color: var(--attendance-gray-500);
    cursor: pointer;
    transition: all 0.15s ease;
    font-size: 0.625rem;
}

.grid-action-btn:hover {
    background: var(--attendance-gray-100);
    color: var(--attendance-gray-700);
}

.desk-grid-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 0;
    padding: 0.25rem;
}

.desk-grid {
    display: grid;
    gap: 3px;
    width: 100%;
    height: 100%;
}

.desk-grid .desk {
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid transparent;
    border-radius: var(--attendance-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.1s ease;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    min-width: 0;
    min-height: 0;
    font-size: clamp(0.5rem, 1.5vmin, 0.875rem);
    overflow: hidden;
    text-overflow: ellipsis;
}

.desk-grid-legend {
    display: none;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.6875rem;
    color: var(--attendance-gray-500);
}

.legend-swatch {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 0.125rem;
    border: 1px solid var(--attendance-gray-300);
}

.legend-present {
    background: var(--attendance-success);
    border-color: #16a34a;
}

.legend-absent {
    background: var(--attendance-danger-light);
    border-color: var(--attendance-danger);
}

.legend-inactive {
    background: var(--attendance-gray-200);
}

.desk-grid-hint {
    display: none;
}

/* Quick count in tracker - compact */
.quick-count-panel {
    flex-shrink: 0;
    background: white;
    border-radius: var(--attendance-radius);
    padding: 0.5rem;
}

.quick-count-panel .quick-count-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.375rem;
}

.quick-count-panel .quick-count-header h2 {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--attendance-gray-700);
    margin: 0;
}

.quick-count-row {
    display: flex;
    gap: 0.5rem;
}

.counter-group {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.375rem 0.5rem;
    border-radius: var(--attendance-radius);
    background: var(--attendance-gray-100);
}

.counter-boys {
    background: #eff6ff;
}

.counter-girls {
    background: #fdf2f8;
}

.counter-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--attendance-gray-600);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.counter-controls {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.counter-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.75rem;
    height: 1.75rem;
    border: none;
    border-radius: var(--attendance-radius);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.1s ease;
}

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

.counter-btn-minus {
    background: var(--attendance-gray-300);
    color: var(--attendance-gray-700);
}

.counter-value {
    font-size: 1.125rem;
    font-weight: 700;
    min-width: 1.5rem;
    text-align: center;
    color: var(--attendance-gray-800);
}

.quick-count-total {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 0.375rem;
    padding-top: 0.375rem;
    border-top: 1px solid var(--attendance-gray-200);
    font-size: 0.75rem;
}

.total-label {
    color: var(--attendance-gray-500);
}

.total-value {
    font-weight: 700;
    color: var(--attendance-primary);
    font-size: 0.875rem;
}

/* ================================
   Tracker Footer
   ================================ */
.tracker-footer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 0.25rem 1rem;
    background: white;
    border-top: 1px solid var(--attendance-gray-200);
    flex-wrap: wrap;
    flex-shrink: 0;
}

.footer-stat {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.stat-label {
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--attendance-gray-500);
}

.stat-value {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--attendance-gray-800);
}

.stat-present {
    color: var(--attendance-success);
}

.stat-absent {
    color: var(--attendance-danger);
}

.footer-upgrade {
    flex-basis: 100%;
    text-align: center;
    margin-top: 0.125rem;
}

.footer-upgrade a {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    background: linear-gradient(135deg, #f59e0b, #f97316);
    color: white;
    border-radius: 2rem;
    font-size: 0.6875rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.15s ease;
}

.footer-upgrade a:hover {
    filter: brightness(1.05);
}

/* ================================
   No Classroom Message
   ================================ */
.no-classroom-message {
    position: fixed;
    inset: 0;
    background: var(--attendance-gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
}

.no-classroom-content {
    text-align: center;
    padding: 2rem;
}

.no-classroom-content i {
    font-size: 4rem;
    color: var(--attendance-gray-300);
    margin-bottom: 1.5rem;
}

.no-classroom-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--attendance-gray-800);
    margin: 0 0 0.5rem 0;
}

.no-classroom-content p {
    color: var(--attendance-gray-500);
    margin: 0 0 1.5rem 0;
}

.no-classroom-content .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    background: var(--attendance-primary);
    color: white;
    border-radius: var(--attendance-radius);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.15s ease;
}

.no-classroom-content .btn-primary:hover {
    background: var(--attendance-primary-hover);
}