/* =============================================
   CLICK - Sistema de Ofertas Comerciales
   Estilos principales
   ============================================= */

:root {
    --primary: #350863;
    --primary-light: #4a1a7a;
    --primary-dark: #2a0550;
    --secondary: #07DAAD;
    --secondary-dark: #06c49b;
    --secondary-light: #5eefd0;
    --text: #2D2D2D;
    --text-light: #4A4A68;
    --text-muted: #6B7280;
    --bg-light: #F8F9FC;
    --bg-card: #FFFFFF;
    --border: #E5E7EB;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #3B82F6;
    --shadow: 0 4px 20px rgba(53, 8, 99, 0.08);
    --shadow-lg: 0 10px 40px rgba(53, 8, 99, 0.12);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg-light);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--primary);
}

h1 { font-size: clamp(28px, 5vw, 42px); }
h2 { font-size: clamp(24px, 4vw, 32px); }
h3 { font-size: clamp(20px, 3vw, 24px); }
h4 { font-size: 18px; }

p {
    color: var(--text-light);
    margin-bottom: 16px;
}

a {
    color: var(--secondary-dark);
    text-decoration: none;
    transition: var(--transition);
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-narrow {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, var(--primary-dark) 100%);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-text {
    font-size: 32px;
    font-weight: 800;
    color: white;
    letter-spacing: -1px;
}

.logo-tagline {
    color: var(--secondary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.header-badge {
    background: rgba(7, 218, 173, 0.2);
    border: 1px solid var(--secondary);
    color: var(--secondary);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    padding: 60px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(7, 218, 173, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    color: white;
    margin-bottom: 8px;
}

.hero-subtitle {
    color: var(--secondary);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
}

.hero p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 17px;
    max-width: 600px;
}

.offer-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 10px 20px;
    border-radius: 50px;
    color: white;
    font-size: 14px;
    margin-top: 20px;
}

.offer-badge .code {
    color: var(--secondary);
    font-weight: 700;
}

/* Sections */
.section {
    padding: 60px 0;
}

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

.section-header h2 {
    margin-bottom: 12px;
}

.section-header p {
    max-width: 600px;
    margin: 0 auto;
}

.section-label {
    display: inline-block;
    color: var(--secondary-dark);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 32px;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--bg-light);
}

.card-title {
    font-size: 20px;
    color: var(--primary);
}

/* Quote Table */
.quote-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.quote-table th {
    background: var(--primary);
    color: white;
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 14px;
}

.quote-table th:first-child {
    border-radius: var(--radius) 0 0 0;
}

.quote-table th:last-child {
    border-radius: 0 var(--radius) 0 0;
    text-align: right;
}

.quote-table td {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    font-size: 15px;
}

.quote-table tr:hover td {
    background: var(--bg-light);
}

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

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

.quote-table .item-desc {
    color: var(--text);
    font-weight: 500;
}

.quote-table .item-iva {
    font-size: 11px;
    color: var(--text-muted);
    display: block;
    margin-top: 4px;
}

/* Quote Summary */
.quote-summary {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 24px;
    margin-top: 24px;
}

.quote-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    font-size: 15px;
}

.quote-row.total {
    border-top: 2px solid var(--primary);
    margin-top: 12px;
    padding-top: 16px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
}

.quote-row .label {
    color: var(--text-light);
}

.quote-row .value {
    font-weight: 600;
    color: var(--text);
}

.quote-row.discount .value {
    color: var(--success);
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.service-card {
    background: white;
    border-radius: var(--radius);
    padding: 28px;
    text-align: center;
    border: 2px solid transparent;
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--secondary);
    transform: translateY(-4px);
}

.service-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 28px;
}

.service-card h4 {
    margin-bottom: 8px;
}

.service-card p {
    font-size: 14px;
    margin: 0;
}

/* Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 32px;
}

.gallery-item {
    border-radius: var(--radius);
    overflow: hidden;
    aspect-ratio: 4/3;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-item.large {
    grid-column: span 2;
    grid-row: span 2;
}

/* Conditions */
.conditions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.condition-card {
    background: white;
    border-radius: var(--radius);
    padding: 24px;
    border-left: 4px solid var(--secondary);
}

.condition-card h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 16px;
}

.condition-card h4 .icon {
    color: var(--secondary);
}

.condition-card p, .condition-card ul {
    font-size: 14px;
    color: var(--text-light);
    margin: 0;
}

.condition-card ul {
    list-style: none;
    padding: 0;
}

.condition-card li {
    padding: 6px 0;
    padding-left: 20px;
    position: relative;
}

.condition-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: bold;
}

/* Alert Box */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius);
    margin: 20px 0;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.alert-warning {
    background: #FEF3C7;
    border-left: 4px solid var(--warning);
    color: #92400E;
}

.alert-info {
    background: #DBEAFE;
    border-left: 4px solid var(--info);
    color: #1E40AF;
}

.alert-success {
    background: #D1FAE5;
    border-left: 4px solid var(--success);
    color: #065F46;
}

.alert-icon {
    flex-shrink: 0;
    margin-top: 2px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-decoration: none;
}

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

.btn-primary {
    background: var(--secondary);
    color: var(--primary);
}

.btn-primary:hover {
    background: var(--secondary-dark);
    color: var(--primary);
}

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

.btn-secondary:hover {
    background: var(--primary-light);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

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

.btn-lg {
    padding: 18px 36px;
    font-size: 18px;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 14px;
}

.btn-block {
    width: 100%;
}

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

.btn-danger:hover {
    background: #DC2626;
}

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

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

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

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 15px;
    transition: var(--transition);
    background: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 4px rgba(7, 218, 173, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-check input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--secondary);
}

/* Accept Section */
.accept-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    padding: 60px 0;
    text-align: center;
}

.accept-section h2 {
    color: white;
    margin-bottom: 12px;
}

.accept-section p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 32px;
}

.accept-form {
    background: white;
    border-radius: var(--radius-lg);
    padding: 40px;
    max-width: 500px;
    margin: 0 auto;
    text-align: left;
}

.accept-form h3 {
    text-align: center;
    margin-bottom: 24px;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.modal {
    background: white;
    border-radius: var(--radius-lg);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: var(--transition);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    padding: 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--text-muted);
    transition: var(--transition);
}

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

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 24px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* Success Message */
.success-message {
    text-align: center;
    padding: 40px;
}

.success-icon {
    width: 80px;
    height: 80px;
    background: var(--success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: white;
    font-size: 40px;
}

/* Footer */
.footer {
    background: var(--primary-dark);
    color: white;
    padding: 40px 0 20px;
    margin-top: 60px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-logo {
    font-size: 24px;
    font-weight: 800;
}

.footer-contact {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-contact a:hover {
    color: var(--secondary);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 24px;
    padding-top: 20px;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

/* =============================================
   ADMIN STYLES
   ============================================= */

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

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--primary);
    color: white;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
    font-size: 28px;
    font-weight: 800;
}

.sidebar-subtitle {
    font-size: 12px;
    color: var(--secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-size: 15px;
}

.nav-item:hover, .nav-item.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.nav-item.active {
    border-left: 3px solid var(--secondary);
}

.nav-item .icon {
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    background: var(--bg-light);
    min-height: 100vh;
}

.main-header {
    background: white;
    padding: 20px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 50;
}

.main-header h1 {
    font-size: 24px;
    margin: 0;
}

.main-body {
    padding: 32px;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.stat-card {
    background: white;
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.stat-icon.purple {
    background: rgba(53, 8, 99, 0.1);
    color: var(--primary);
}

.stat-icon.teal {
    background: rgba(7, 218, 173, 0.1);
    color: var(--secondary-dark);
}

.stat-icon.orange {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning);
}

.stat-icon.green {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.stat-info h3 {
    font-size: 28px;
    margin-bottom: 4px;
}

.stat-info p {
    font-size: 14px;
    color: var(--text-muted);
    margin: 0;
}

/* Table */
.table-container {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.table-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.data-table th {
    background: var(--bg-light);
    padding: 14px 16px;
    text-align: left;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table td {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

.data-table tr:hover td {
    background: var(--bg-light);
}

.data-table .actions {
    display: flex;
    gap: 8px;
}

.data-table .actions button {
    padding: 8px;
    border: none;
    background: var(--bg-light);
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-muted);
    transition: var(--transition);
}

.data-table .actions button:hover {
    background: var(--secondary);
    color: var(--primary);
}

/* Status Badge */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.status-badge.pending {
    background: #FEF3C7;
    color: #92400E;
}

.status-badge.accepted {
    background: #D1FAE5;
    color: #065F46;
}

.status-badge.rejected {
    background: #FEE2E2;
    color: #991B1B;
}

.status-badge.expired {
    background: #E5E7EB;
    color: #4B5563;
}

/* Calendar */
.calendar-container {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.calendar-nav {
    display: flex;
    gap: 8px;
}

.calendar-nav button {
    padding: 8px 16px;
    border: 1px solid var(--border);
    background: white;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.calendar-nav button:hover {
    background: var(--bg-light);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.calendar-day-header {
    padding: 12px;
    text-align: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
}

.calendar-day {
    aspect-ratio: 1;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.calendar-day:hover {
    background: var(--bg-light);
}

.calendar-day.today {
    border-color: var(--secondary);
    background: rgba(7, 218, 173, 0.1);
}

.calendar-day.other-month {
    opacity: 0.4;
}

.calendar-day .day-number {
    font-size: 14px;
    font-weight: 600;
}

.calendar-day .event-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
}

.calendar-day .event-dot.confirmed {
    background: var(--success);
}

.calendar-day .event-dot.pending {
    background: var(--warning);
}

/* Item Builder */
.item-row {
    display: grid;
    grid-template-columns: 2fr 100px 150px 150px 80px 50px;
    gap: 12px;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.item-row .remove-btn {
    padding: 8px;
    border: none;
    background: none;
    color: var(--danger);
    cursor: pointer;
    opacity: 0.6;
    transition: var(--transition);
}

.item-row .remove-btn:hover {
    opacity: 1;
}

.add-item-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px;
    border: 2px dashed var(--border);
    background: none;
    border-radius: var(--radius);
    width: 100%;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    margin-top: 16px;
    transition: var(--transition);
}

.add-item-btn:hover {
    border-color: var(--secondary);
    color: var(--secondary);
}

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

.login-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 48px;
    width: 100%;
    max-width: 420px;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.login-card h1 {
    font-size: 36px;
    margin-bottom: 8px;
}

.login-card .subtitle {
    color: var(--secondary);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 32px;
}

.login-card .form-group {
    text-align: left;
}

/* Responsive */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: var(--transition);
        z-index: 100;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .item-row {
        grid-template-columns: 1fr;
        gap: 8px;
    }
}

@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-item.large {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-contact {
        justify-content: center;
    }
    
    .quote-table {
        font-size: 13px;
    }
    
    .quote-table th, .quote-table td {
        padding: 10px 8px;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-in {
    animation: fadeIn 0.5s ease forwards;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.hidden { display: none; }