/* ============================================
   DOCUMENTATION PAGE - Premium Design
   ============================================ */

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #0f0f18;
    --bg-tertiary: #16162a;
    --bg-card: #1a1a2e;
    
    --accent-primary: #00d4aa;
    --accent-secondary: #00b894;
    --accent-gradient: linear-gradient(135deg, #00d4aa, #00b894, #00cec9);
    --accent-purple: #6c5ce7;
    --accent-blue: #0984e3;
    --accent-orange: #f39c12;
    
    --text-primary: #ffffff;
    --text-secondary: #b0b0c0;
    --text-muted: #6b6b8b;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(0, 212, 170, 0.4);
    
    --font-primary: 'Outfit', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

/* ============================================
   Navigation
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 16px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 1.3rem;
    font-weight: 600;
}

.logo-icon {
    font-size: 1.8rem;
}

.logo-text .accent {
    color: var(--accent-primary);
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent-primary);
}

.nav-actions {
    display: flex;
    gap: 12px;
}

.btn-nav {
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.btn-nav:hover {
    color: var(--text-primary);
}

.btn-nav.btn-primary {
    background: var(--accent-primary);
    color: #000;
}

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

/* ============================================
   Hero Section
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 30% 30%, rgba(0, 212, 170, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(108, 92, 231, 0.1) 0%, transparent 50%),
        linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    padding: 40px;
}

.hero-badge {
    display: inline-block;
    padding: 10px 24px;
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid var(--accent-primary);
    border-radius: 30px;
    font-size: 0.9rem;
    color: var(--accent-primary);
    margin-bottom: 32px;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.3rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 48px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
}

.hero-stats .stat {
    text-align: center;
}

.hero-stats .stat span {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-primary);
    font-family: var(--font-mono);
}

/* ============================================
   Table of Contents
   ============================================ */

.toc-section {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.toc-section h2 {
    font-size: 2rem;
    margin-bottom: 48px;
    text-align: center;
}

.toc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.toc-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    text-decoration: none;
    transition: all 0.3s;
}

.toc-item:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(0, 212, 170, 0.1);
}

.toc-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--accent-primary);
    opacity: 0.3;
    margin-bottom: 16px;
}

.toc-title {
    display: block;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.toc-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ============================================
   Documentation Sections
   ============================================ */

.doc-section {
    padding: 100px 0;
}

.doc-section.alt-bg {
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-number {
    display: inline-block;
    font-size: 1rem;
    font-family: var(--font-mono);
    color: var(--accent-primary);
    padding: 6px 16px;
    background: rgba(0, 212, 170, 0.1);
    border-radius: 20px;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

/* Content Grid */

.content-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
}

.content-main h3 {
    font-size: 1.5rem;
    margin: 48px 0 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.content-main h3:first-child {
    margin-top: 0;
}

.content-main p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.content-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
}

.info-card h4 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--accent-primary);
}

.info-card ul {
    list-style: none;
}

.info-card li {
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-color);
}

.info-card li:last-child {
    border-bottom: none;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.stat-row:last-child {
    border-bottom: none;
}

.stat-row span {
    color: var(--text-secondary);
}

.stat-row strong {
    color: var(--accent-primary);
}

/* Architecture Diagram */

.architecture-diagram {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    margin: 32px 0;
}

.arch-layer {
    display: flex;
    align-items: center;
    gap: 24px;
}

.layer-label {
    min-width: 120px;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.arch-boxes {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.arch-boxes.agents {
    flex: 1;
}

.arch-box {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 16px 24px;
    border-radius: 8px;
    font-size: 0.9rem;
    text-align: center;
}

.arch-box.highlight {
    border-color: var(--accent-primary);
    background: rgba(0, 212, 170, 0.1);
}

.arch-box.small {
    padding: 10px 16px;
    font-size: 0.8rem;
}

.arch-arrow {
    text-align: center;
    font-size: 1.5rem;
    color: var(--accent-primary);
    padding: 16px 0;
}

/* Process List */

.process-list {
    list-style: none;
    counter-reset: process;
}

.process-list li {
    counter-increment: process;
    padding: 16px 0 16px 60px;
    position: relative;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.process-list li::before {
    content: counter(process);
    position: absolute;
    left: 0;
    top: 14px;
    width: 36px;
    height: 36px;
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid var(--accent-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-primary);
}

/* ============================================
   Territories
   ============================================ */

.territories-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 64px;
}

.territories-intro p {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.territories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 64px;
}

.territory-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
}

.territory-header {
    padding: 24px;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    gap: 16px;
}

.territory-flag {
    font-size: 3rem;
}

.territory-header h3 {
    font-size: 1.3rem;
    margin-bottom: 4px;
}

.territory-code {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.territory-body {
    padding: 24px;
}

.tax-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.tax-item {
    background: var(--bg-tertiary);
    padding: 16px;
    border-radius: 10px;
}

.tax-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.tax-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-primary);
}

.territory-details h4 {
    font-size: 0.9rem;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.territory-details ul {
    list-style: none;
}

.territory-details li {
    padding: 8px 0;
    font-size: 0.9rem;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
}

.territory-details li:last-child {
    border-bottom: none;
}

/* Calculation Example */

.calculation-example {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
}

.calculation-example h3 {
    font-size: 1.5rem;
    margin-bottom: 32px;
}

.calc-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 40px;
}

.calc-input {
    background: var(--bg-tertiary);
    padding: 24px;
    border-radius: 12px;
}

.calc-input h4 {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.calc-input p {
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.calc-price {
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.calc-price strong {
    color: var(--accent-primary);
    font-size: 1.3rem;
}

.calc-steps {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.calc-step {
    display: flex;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-radius: 8px;
}

.step-label {
    color: var(--text-secondary);
}

.step-value {
    font-family: var(--font-mono);
    color: var(--text-primary);
}

.calc-step.total {
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid var(--accent-primary);
    margin-top: 16px;
}

.calc-step.total .step-label,
.calc-step.total .step-value {
    font-weight: 700;
    color: var(--accent-primary);
}

/* ============================================
   Suppliers
   ============================================ */

.import-methods {
    display: grid;
    gap: 24px;
    margin: 32px 0;
}

.import-method {
    display: flex;
    gap: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
}

.method-icon {
    font-size: 2.5rem;
}

.method-content h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.method-content p {
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.method-content ul {
    list-style: none;
}

.method-content li {
    font-size: 0.9rem;
    color: var(--text-muted);
    padding: 4px 0;
}

.method-content li::before {
    content: "•";
    color: var(--accent-primary);
    margin-right: 8px;
}

.suppliers-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 32px;
}

.supplier-type {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
}

.supplier-type h4 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.supplier-type p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.supplier-badge {
    display: inline-block;
    padding: 6px 12px;
    background: rgba(0, 212, 170, 0.1);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--accent-primary);
}

/* ============================================
   Catalog
   ============================================ */

.catalog-structure {
    margin-bottom: 64px;
}

.hierarchy-diagram {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 48px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.hierarchy-level {
    display: flex;
    gap: 16px;
}

.hierarchy-level.multi {
    gap: 20px;
}

.hier-item {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 32px;
    text-align: center;
}

.hier-item.main {
    border-color: var(--accent-primary);
    background: rgba(0, 212, 170, 0.1);
}

.hier-item.options {
    border-style: dashed;
}

.hier-label {
    display: block;
    font-weight: 600;
    margin-bottom: 4px;
}

.hier-example {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.hier-connector {
    width: 2px;
    height: 20px;
    background: var(--accent-primary);
}

.variants-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 32px;
}

.variant-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
}

.variant-card h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.variant-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.variant-card ul {
    list-style: none;
}

.variant-card li {
    padding: 6px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.variant-card li::before {
    content: "→";
    color: var(--accent-primary);
    margin-right: 8px;
}

.display-rules {
    margin-top: 64px;
}

.display-rules h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

.display-rules > p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.rules-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.rule-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 16px;
}

.rule-item.active {
    border-color: var(--accent-primary);
    background: rgba(0, 212, 170, 0.05);
}

.rule-icon {
    font-size: 1.2rem;
}

.rule-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ============================================
   Pricing
   ============================================ */

.pricing-flow h3 {
    font-size: 1.5rem;
    margin-bottom: 32px;
    text-align: center;
}

.price-components {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 64px;
}

.price-component {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    min-width: 180px;
}

.price-component.total {
    border-color: var(--accent-primary);
    background: rgba(0, 212, 170, 0.1);
}

.comp-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
}

.comp-icon {
    font-size: 2rem;
}

.comp-header h4 {
    font-size: 0.95rem;
}

.price-component p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.comp-example {
    font-family: var(--font-mono);
    color: var(--accent-primary);
    font-weight: 600;
}

.price-plus,
.price-equals {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.margin-rules h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
}

.data-table th,
.data-table td {
    padding: 16px 24px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.data-table td {
    font-family: var(--font-mono);
    color: var(--text-secondary);
}

.data-table tr:last-child td {
    border-bottom: none;
}

/* ============================================
   Logistics
   ============================================ */

.transport-modes {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    margin-top: 32px;
}

.transport-mode {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 32px;
}

.mode-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.transport-mode h4 {
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.transport-mode p {
    color: var(--text-muted);
    margin-bottom: 24px;
}

.transport-mode ul {
    list-style: none;
}

.transport-mode li {
    padding: 8px 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.shipping-routes {
    margin-top: 64px;
}

.shipping-routes h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
}

.routes-table {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
}

.route-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
}

.route-row:last-child {
    border-bottom: none;
}

.route-row.header {
    background: var(--bg-tertiary);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
}

.route-row span {
    color: var(--text-secondary);
}

.delivery-process {
    margin-top: 64px;
}

.delivery-process h3 {
    font-size: 1.5rem;
    margin-bottom: 32px;
}

.process-timeline {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 16px;
}

.timeline-step {
    flex: 1;
    min-width: 180px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    text-align: center;
}

.step-number {
    width: 48px;
    height: 48px;
    background: rgba(0, 212, 170, 0.1);
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin: 0 auto 16px;
}

.step-content h4 {
    font-size: 0.95rem;
    margin-bottom: 8px;
}

.step-content p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.step-time {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--accent-primary);
}

/* ============================================
   Workflow
   ============================================ */

.workflow-stages {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

.stage {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    min-width: 200px;
    flex: 1;
}

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

.stage-icon {
    font-size: 1.5rem;
}

.stage-header h4 {
    font-size: 0.95rem;
}

.stage ul {
    list-style: none;
}

.stage li {
    padding: 4px 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.stage-arrow {
    font-size: 1.5rem;
    color: var(--accent-primary);
    align-self: center;
}

/* ============================================
   Agents Detail
   ============================================ */

.agents-detail-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.agent-detail-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 28px;
    transition: border-color 0.3s;
}

.agent-detail-card:hover {
    border-color: var(--accent-primary);
}

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

.agent-emoji {
    font-size: 2.5rem;
}

.agent-header h4 {
    font-size: 1.2rem;
    margin-bottom: 4px;
}

.agent-role {
    font-size: 0.85rem;
    color: var(--accent-primary);
}

.agent-detail-card > p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 16px;
}

.agent-capabilities {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.agent-capabilities span {
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ============================================
   Footer
   ============================================ */

.footer {
    padding: 60px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

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

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.2rem;
    font-weight: 600;
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.footer-copy {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1200px) {
    .toc-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .territories-grid,
    .agents-detail-grid {
        grid-template-columns: 1fr;
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
    
    .content-sidebar {
        position: static;
    }
    
    .variants-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        gap: 24px;
        flex-wrap: wrap;
    }
    
    .toc-grid,
    .variants-grid,
    .rules-grid,
    .transport-modes,
    .suppliers-list {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        display: none;
    }
    
    .price-components {
        flex-direction: column;
    }
    
    .price-plus,
    .price-equals {
        transform: rotate(90deg);
    }
    
    .calc-container {
        grid-template-columns: 1fr;
    }
    
    .workflow-stages {
        flex-direction: column;
    }
    
    .stage-arrow {
        transform: rotate(90deg);
    }
    
    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}