/* ========================================
   CSS Variables
   ======================================== */
:root {
    --primary: #0f172a;
    --primary-light: #1e293b;
    --accent-blue: #2563eb;
    --accent-blue-light: #3b82f6;
    --accent-blue-soft: #dbeafe;
    --accent-yellow: #f59e0b;
    --accent-yellow-light: #fbbf24;
    --accent-yellow-soft: #fef3c7;
    --success: #10b981;
    --success-soft: #d1fae5;
    --danger: #ef4444;
    --danger-soft: #fee2e2;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --shadow-xl: 0 25px 50px rgba(0,0,0,0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #f0f9ff 0%, #f8fafc 50%, #fffbeb 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 24px 100px;
}

/* ========================================
   Header
   ======================================== */
header {
    text-align: center;
    margin-bottom: 40px;
}

.logo-wrapper {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-bottom: 24px;
}

.logo {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--primary) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md), 0 4px 20px rgba(37, 99, 235, 0.3);
}

.logo svg {
    width: 26px;
    height: 26px;
    color: white;
}

.logo-accent {
    width: 12px;
    height: 52px;
    background: linear-gradient(180deg, var(--accent-yellow) 0%, var(--accent-yellow-light) 100%);
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

header h1 {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.75px;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

header p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    font-weight: 400;
    max-width: 480px;
    margin: 0 auto;
}

.watermark-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
    padding: 10px 20px;
    background: linear-gradient(135deg, var(--accent-yellow-soft) 0%, #fff7ed 100%);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    color: #b45309;
    border: 2px solid var(--accent-yellow);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.2);
}

.watermark-badge svg {
    width: 16px;
    height: 16px;
    color: var(--accent-yellow);
}

/* ========================================
   Progress Section
   ======================================== */
.progress-wrapper {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
    margin-bottom: 32px;
    border: 2px solid var(--border);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.progress-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-blue) 0%, var(--accent-yellow) 100%);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.progress-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.progress-value {
    font-size: 1rem;
    font-weight: 800;
    color: var(--accent-blue);
}

.progress-bar {
    background: var(--bg-tertiary);
    border-radius: 100px;
    height: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-blue) 0%, var(--accent-blue-light) 50%, var(--accent-yellow) 100%);
    width: 0%;
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 100px;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.3) 50%, transparent 100%);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-stats {
    display: flex;
    gap: 16px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-light);
}

.progress-stat {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.progress-stat span {
    font-weight: 700;
    color: var(--text-secondary);
}

/* ========================================
   Sections
   ======================================== */
.section {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 32px;
    margin-bottom: 20px;
    border: 2px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 32px;
    right: 32px;
    height: 3px;
    background: transparent;
    border-radius: 0 0 4px 4px;
    transition: background 0.3s ease;
}

.section:hover {
    border-color: var(--accent-blue-light);
    box-shadow: var(--shadow-md), 0 0 0 4px var(--accent-blue-soft);
}

.section:hover::before {
    background: linear-gradient(90deg, var(--accent-blue) 0%, var(--accent-yellow) 100%);
}

.section.completed {
    border-color: var(--success);
}

.section.completed::before {
    background: var(--success);
}

.section-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}

.section-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-blue-soft) 0%, #eff6ff 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: 2px solid var(--accent-blue-light);
    position: relative;
}

.section-icon span {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--accent-blue);
}

.section-icon.accent-yellow {
    background: linear-gradient(135deg, var(--accent-yellow-soft) 0%, #fffbeb 100%);
    border-color: var(--accent-yellow);
}

.section-icon.accent-yellow span {
    color: var(--accent-yellow);
}

.section-title-group {
    flex: 1;
}

.section-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 400;
}

.section-required {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--accent-blue);
    background: var(--accent-blue-soft);
    padding: 4px 10px;
    border-radius: 100px;
    margin-left: auto;
}

/* ========================================
   Guide & Example Boxes
   ======================================== */
.guide-box {
    background: linear-gradient(135deg, #eff6ff 0%, #f0f9ff 100%);
    padding: 18px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    border: 1px solid var(--accent-blue-light);
    border-left: 4px solid var(--accent-blue);
}

.guide-box-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.guide-box-header svg {
    width: 18px;
    height: 18px;
    color: var(--accent-blue);
}

.guide-box-header span {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.guide-box p {
    color: #1e40af;
    font-size: 0.9rem;
    line-height: 1.6;
}

.guide-box strong {
    font-weight: 700;
}

.guide-box ul {
    margin: 8px 0 0 0;
    padding-left: 20px;
    color: #1e40af;
    font-size: 0.875rem;
}

.guide-box li {
    margin-bottom: 4px;
}

.example-box {
    background: linear-gradient(135deg, var(--accent-yellow-soft) 0%, #fffbeb 100%);
    padding: 16px 18px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    border: 1px solid var(--accent-yellow);
    border-left: 4px solid var(--accent-yellow);
}

.example-box-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.example-box-header svg {
    width: 16px;
    height: 16px;
    color: var(--accent-yellow);
}

.example-box-header span {
    font-size: 0.8rem;
    font-weight: 700;
    color: #b45309;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.example-box p {
    color: #92400e;
    font-size: 0.875rem;
    font-style: italic;
    line-height: 1.5;
}

/* ========================================
   Form Elements
   ======================================== */
.form-group {
    margin-bottom: 20px;
}

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

.form-label-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

label {
    display: block;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
}

.label-optional {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

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

input[type="text"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: all 0.2s ease;
}

input[type="text"]:hover,
input[type="number"]:hover,
textarea:hover,
select:hover {
    border-color: #cbd5e1;
}

input[type="text"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 4px var(--accent-blue-soft);
}

input.filled,
textarea.filled,
select.filled {
    border-color: var(--success);
    background: linear-gradient(135deg, #f0fdf4 0%, #ffffff 100%);
}

textarea {
    min-height: 100px;
    resize: vertical;
    line-height: 1.6;
}

input::placeholder,
textarea::placeholder {
    color: var(--text-muted);
}

select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 48px;
}

.input-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 6px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

@media (max-width: 600px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Channel Selection
   ======================================== */
.channel-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

@media (max-width: 540px) {
    .channel-grid {
        grid-template-columns: 1fr;
    }
}

.channel-item {
    display: flex;
    align-items: center;
    padding: 16px 18px;
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.25s ease;
    user-select: none;
}

.channel-item:hover {
    border-color: var(--accent-blue-light);
    background: var(--accent-blue-soft);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.channel-item.selected {
    background: linear-gradient(135deg, var(--accent-blue) 0%, #1d4ed8 100%);
    border-color: var(--accent-blue);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.channel-item.selected span {
    color: #ffffff;
}

.channel-item.selected .check-box {
    background: rgba(255,255,255,0.25);
    border-color: transparent;
}

.channel-item.selected .check-box::after {
    opacity: 1;
}

.check-box {
    width: 22px;
    height: 22px;
    border: 2px solid #cbd5e1;
    border-radius: 6px;
    margin-right: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.check-box::after {
    content: '✓';
    color: #ffffff;
    font-size: 12px;
    font-weight: 700;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.channel-item span {
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
}

.channel-status {
    margin-top: 16px;
    padding: 14px 18px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--border);
}

.channel-status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: all 0.3s ease;
}

.channel-status.active .channel-status-dot {
    background: var(--success);
    box-shadow: 0 0 0 4px var(--success-soft);
}

.channel-status-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* ========================================
   Target Cards
   ======================================== */
.target-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

@media (max-width: 700px) {
    .target-grid {
        grid-template-columns: 1fr;
    }
}

.target-card {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 2px solid var(--border);
    transition: all 0.3s ease;
}

.target-card:hover {
    border-color: var(--accent-blue-light);
}

.target-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.target-card-badge {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: white;
}

.target-card h4 {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
}

.target-card textarea {
    background: var(--bg-primary);
    min-height: 90px;
}

/* ========================================
   Warning Note
   ======================================== */
.warning-note {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px 18px;
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border-radius: var(--radius-md);
    margin-top: 20px;
    border: 1px solid #fecaca;
    border-left: 4px solid var(--danger);
}

.warning-note-icon {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    color: var(--danger);
}

.warning-note span {
    color: #991b1b;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ========================================
   Buttons
   ======================================== */
.btn-container {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 48px;
}

.btn {
    padding: 16px 32px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue) 0%, #1d4ed8 100%);
    color: #ffffff;
    box-shadow: var(--shadow-md), 0 4px 16px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), 0 8px 24px rgba(37, 99, 235, 0.4);
}

.btn-primary:active {
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-blue-light);
    color: var(--accent-blue);
}

.btn-warning {
    background: linear-gradient(135deg, var(--accent-yellow) 0%, #d97706 100%);
    color: #ffffff;
    box-shadow: var(--shadow-md), 0 4px 16px rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg), 0 8px 24px rgba(245, 158, 11, 0.4);
}

.btn svg {
    width: 20px;
    height: 20px;
}

/* ========================================
   Modal
   ======================================== */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(8px);
    z-index: 1000;
    overflow-y: auto;
    padding: 40px 20px;
}

.modal-overlay.active {
    display: block;
}

.modal-wrapper {
    max-width: 760px;
    margin: 0 auto;
    position: relative;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.modal-header {
    background: linear-gradient(135deg, var(--primary) 0%, #1e3a5f 100%);
    padding: 48px 40px;
    text-align: center;
    position: relative;
}

.modal-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-blue) 0%, var(--accent-yellow) 100%);
}

.modal-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-yellow) 0%, var(--accent-blue) 100%);
}

.modal-header-label {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent-yellow);
    margin-bottom: 12px;
}

.modal-header .business-name {
    color: #ffffff;
    font-size: 1.85rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.modal-header .owner-name {
    color: rgba(255,255,255,0.7);
    font-size: 1.05rem;
    margin-top: 10px;
    font-weight: 500;
}

.modal-header .date {
    color: rgba(255,255,255,0.5);
    font-size: 0.9rem;
    margin-top: 14px;
    font-weight: 500;
}

.modal-body {
    padding: 40px;
}

.preview-section {
    margin-bottom: 28px;
    padding-bottom: 28px;
    border-bottom: 2px solid var(--border-light);
}

.preview-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.preview-section-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.preview-section-num {
    width: 30px;
    height: 30px;
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--primary) 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    color: white;
}

.preview-section h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
}

.preview-section p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.preview-section ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.preview-section li {
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding: 8px 0;
    padding-left: 22px;
    position: relative;
    border-bottom: 1px solid var(--border-light);
}

.preview-section li:last-child {
    border-bottom: none;
}

.preview-section li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 16px;
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-yellow) 100%);
    border-radius: 50%;
}

.preview-label {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.modal-footer {
    padding: 24px 40px;
    background: var(--bg-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 2px solid var(--border);
}

.modal-watermark {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
}

.modal-watermark svg {
    width: 18px;
    height: 18px;
    color: var(--accent-yellow);
}

.modal-footer-buttons {
    display: flex;
    gap: 12px;
}

.close-btn {
    position: absolute;
    top: -16px;
    right: -16px;
    width: 48px;
    height: 48px;
    background: var(--bg-primary);
    border: 2px solid var(--border);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 1.4rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover {
    background: var(--danger-soft);
    border-color: var(--danger);
    color: var(--danger);
    transform: rotate(90deg);
}

/* ========================================
   Footer
   ======================================== */
.footer-watermark {
    text-align: center;
    padding: 40px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.footer-watermark-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 100px;
    box-shadow: var(--shadow-md);
}

.footer-watermark-badge svg {
    width: 20px;
    height: 20px;
    color: var(--accent-yellow);
}

.footer-watermark-badge span {
    color: white;
    font-size: 0.85rem;
    font-weight: 600;
}

.footer-copyright {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.section {
    animation: fadeIn 0.5s ease forwards;
    opacity: 0;
}

.section:nth-child(1) { animation-delay: 0.1s; }
.section:nth-child(2) { animation-delay: 0.15s; }
.section:nth-child(3) { animation-delay: 0.2s; }
.section:nth-child(4) { animation-delay: 0.25s; }
.section:nth-child(5) { animation-delay: 0.3s; }
.section:nth-child(6) { animation-delay: 0.35s; }
.section:nth-child(7) { animation-delay: 0.4s; }
.section:nth-child(8) { animation-delay: 0.45s; }
.section:nth-child(9) { animation-delay: 0.5s; }

/* ========================================
   Scrollbar
   ======================================== */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--accent-blue-light) 0%, var(--accent-blue) 100%);
    border-radius: 6px;
    border: 3px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--accent-blue) 0%, #1d4ed8 100%);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 600px) {
    header h1 {
        font-size: 1.75rem;
    }

    .section {
        padding: 24px;
    }

    .modal-header {
        padding: 32px 24px;
    }

    .modal-body {
        padding: 24px;
    }

    .modal-footer {
        flex-direction: column;
        gap: 16px;
    }

    .btn-container {
        flex-direction: column;
    }

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