/* ========================================
   ArdenPetro - Terrain-Integrated Design
   ======================================== */

/* CSS Variables - Color Palette */
:root {
    --color-primary: #0A1F18;        /* Deep earth green */
    --color-bg-light: #E6ECE7;       /* Soft field grey */
    --color-accent: #B56B34;         /* Warm soil copper */
    --color-sage: #5F8877;           /* Natural sage */
    --color-white: #FFFFFF;
    --color-text: #2C3E37;
    --color-text-light: #5A6B62;
    --color-border: #C4D1C7;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-heading: Georgia, 'Times New Roman', serif;
    
    /* Transitions */
    --transition-base: 0.3s ease;
}

/* ========================================
   Reset & Base Styles
   ======================================== */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: var(--color-sage);
    transition: var(--transition-base);
}

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

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

h1 {
    font-size: 2.5rem;
    font-weight: 600;
}

h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

h4 {
    font-size: 1.25rem;
    font-weight: 600;
}

p {
    margin-bottom: var(--spacing-sm);
}

/* ========================================
   Layout Components
   ======================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section-intro {
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
    text-align: center;
    font-size: 1.125rem;
    color: var(--color-text-light);
}

.section-subtitle {
    max-width: 700px;
    margin: 0 auto var(--spacing-md);
    text-align: center;
    color: var(--color-text-light);
}

.bg-light {
    background-color: var(--color-bg-light);
}

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

.main-nav {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

.logo a {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.5px;
}

.logo a:hover {
    color: var(--color-bg-light);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-links a {
    color: var(--color-white);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    transition: var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-bg-light);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-white);
    margin: 3px 0;
    transition: var(--transition-base);
}

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

.hero {
    position: relative;
    background: linear-gradient(135deg, var(--color-primary) 0%, #1a3a2e 100%);
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
    min-height: 500px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 100px,
            rgba(255, 255, 255, 0.02) 100px,
            rgba(255, 255, 255, 0.02) 101px
        );
    pointer-events: none;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(10, 31, 24, 0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero h1 {
    color: var(--color-white);
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-bg-light);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 4px;
    transition: var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: #9f5a2a;
    border-color: #9f5a2a;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(181, 107, 52, 0.3);
}

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

.btn-secondary:hover {
    background-color: #4e7264;
    border-color: #4e7264;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(95, 136, 119, 0.3);
}

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

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

/* ========================================
   Page Header
   ======================================== */

.page-header {
    background: linear-gradient(135deg, var(--color-sage) 0%, #4e7264 100%);
    color: var(--color-white);
    padding: var(--spacing-lg) 0;
    text-align: center;
    background-size: cover;
    background-position: center;
    position: relative;
}

.page-header h1 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    font-size: 1.125rem;
    color: var(--color-bg-light);
    max-width: 700px;
    margin: 0 auto;
}

/* ========================================
   Content Sections
   ======================================== */

.content-section,
.overview,
.feature-section,
.placement-section,
.logistics-section,
.terrain-section,
.analysis-section,
.system-detail,
.insights-section,
.contact-section,
.legal-section {
    padding: var(--spacing-xl) 0;
}

.intro-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.intro-content h2 {
    margin-bottom: var(--spacing-md);
}

.intro-content p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

/* ========================================
   Card Components
   ======================================== */

.section-grid,
.areas-grid,
.feature-grid,
.principles-grid,
.concept-grid,
.integration-grid,
.management-grid,
.moisture-grid,
.routing-grid,
.seasonal-grid,
.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.section-card,
.area-card,
.feature-item,
.principle-card,
.concept-card,
.integration-card,
.management-card,
.moisture-card,
.routing-card,
.season-card,
.insight-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    transition: var(--transition-base);
}

.section-card:hover,
.area-card:hover,
.principle-card:hover,
.insight-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
    border-color: var(--color-sage);
}

.card-icon,
.principle-icon {
    width: 60px;
    height: 60px;
    background-color: var(--color-bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.card-icon svg,
.principle-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-sage);
}

.card-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    color: var(--color-sage);
    font-weight: 600;
    transition: var(--transition-base);
}

.card-link:hover {
    color: var(--color-accent);
    transform: translateX(4px);
}

/* ========================================
   Research Focus Section
   ======================================== */

.research-focus {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-light);
}

.focus-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.focus-list {
    list-style: none;
    margin-top: var(--spacing-md);
}

.focus-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
}

.focus-list li:last-child {
    border-bottom: none;
}

.focus-list strong {
    color: var(--color-primary);
}

/* Terrain Diagram */
.terrain-diagram {
    background: linear-gradient(to bottom, 
        var(--color-sage) 0%,
        #7a9e8f 25%,
        #8a7a5f 50%,
        #6b5d4f 75%,
        var(--color-primary) 100%
    );
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.diagram-layer {
    background-color: rgba(255, 255, 255, 0.9);
    padding: var(--spacing-sm);
    margin: var(--spacing-sm) 0;
    border-radius: 4px;
    border-left: 4px solid var(--color-accent);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
}

/* ========================================
   Detail Layouts
   ======================================== */

.content-layout,
.detail-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.content-main,
.detail-content {
    max-width: 800px;
}

.detail-list,
.criteria-list,
.check-list {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.detail-list li,
.criteria-list li,
.check-list li {
    padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-md);
    border-left: 3px solid var(--color-sage);
    margin-bottom: var(--spacing-sm);
}

.check-list li::before {
    content: '✓';
    color: var(--color-sage);
    font-weight: bold;
    margin-right: var(--spacing-xs);
}

/* Sidebar */
.content-sidebar,
.detail-sidebar {
    position: sticky;
    top: 100px;
    align-self: start;
}

.sidebar-card,
.sidebar-highlight {
    background-color: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--color-accent);
}

.sidebar-highlight h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.sidebar-highlight ul {
    list-style: none;
}

.sidebar-highlight ul li {
    padding: 0.375rem 0;
}

.sidebar-highlight ul li a {
    color: var(--color-sage);
    font-weight: 500;
}

/* ========================================
   Team & Methodology
   ======================================== */

.team-structure,
.methodology-flow {
    display: grid;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.team-area,
.feature-item {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    border: 1px solid var(--color-border);
}

.feature-number {
    display: inline-block;
    width: 50px;
    height: 50px;
    background-color: var(--color-sage);
    color: var(--color-white);
    border-radius: 50%;
    text-align: center;
    line-height: 50px;
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.method-step {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    border-left: 4px solid var(--color-accent);
    display: flex;
    gap: var(--spacing-md);
    align-items: start;
}

.step-icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background-color: var(--color-bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-sage);
}

/* ========================================
   Responsibility & Principles
   ======================================== */

.responsibility-statement {
    max-width: 1000px;
    margin: 0 auto;
}

.statement-content {
    margin-top: var(--spacing-md);
}

.principles-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    margin-top: var(--spacing-lg);
}

.principle {
    background-color: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: 8px;
}

.principle h4 {
    color: var(--color-sage);
    margin-bottom: var(--spacing-xs);
}

/* ========================================
   Terrain Sections
   ======================================== */

.terrain-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.terrain-card {
    background-color: var(--color-white);
    border-left-color: var(--color-sage);
}

.terrain-card h4 {
    color: var(--color-sage);
}

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

.terrain-card ul li {
    padding: 0.375rem 0;
    padding-left: var(--spacing-md);
    border-left: 2px solid var(--color-bg-light);
}

/* ========================================
   Soil Layers
   ======================================== */

.layer-analysis {
    margin-top: var(--spacing-lg);
}

.soil-layer {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.layer-header {
    background: linear-gradient(90deg, var(--color-sage) 0%, #4e7264 100%);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
}

.layer-label {
    font-weight: 600;
    font-size: 1.125rem;
}

.layer-body {
    padding: var(--spacing-md);
}

.layer-body p {
    margin-bottom: var(--spacing-sm);
}

/* ========================================
   Erosion & Processes
   ======================================== */

.erosion-content {
    display: grid;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.erosion-process {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    border-left: 4px solid var(--color-accent);
}

/* ========================================
   Approach & Corridor Design
   ======================================== */

.approach-layout,
.corridor-content,
.buffer-layout,
.protection-content {
    margin-top: var(--spacing-lg);
}

.approach-item,
.corridor-aspect,
.buffer-type,
.protection-category {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-md);
}

.approach-details h4 {
    color: var(--color-sage);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

/* ========================================
   Long-term & Management
   ======================================== */

.longterm-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    margin-top: var(--spacing-lg);
}

.longterm-item {
    background-color: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: 8px;
}

/* ========================================
   Insights
   ======================================== */

.insights-grid {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.insight-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.insight-category {
    display: inline-block;
    background-color: var(--color-sage);
    color: var(--color-white);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    align-self: flex-start;
}

.insight-meta {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: auto;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

.meta-item {
    font-size: 0.875rem;
    color: var(--color-text-light);
    font-weight: 500;
}

.approach-content {
    display: grid;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* ========================================
   Contact Page
   ======================================== */

.contact-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.contact-form {
    max-width: 600px;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-sage);
    box-shadow: 0 0 0 3px rgba(95, 136, 119, 0.1);
}

.form-message {
    padding: var(--spacing-sm);
    border-radius: 4px;
    margin-top: var(--spacing-sm);
    display: none;
}

.form-message.success {
    display: block;
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    display: block;
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.info-card {
    background-color: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
}

.info-card h3 {
    color: var(--color-sage);
    margin-bottom: var(--spacing-sm);
}

.info-card address {
    font-style: normal;
    line-height: 1.8;
}

.focus-areas {
    list-style: none;
}

.focus-areas li {
    padding: 0.375rem 0;
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--color-sage);
    margin-bottom: var(--spacing-xs);
}

/* Map Section */
.map-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-light);
}

.map-placeholder {
    background-color: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-xl);
    text-align: center;
    margin-top: var(--spacing-md);
}

.map-content svg {
    width: 80px;
    height: 80px;
    color: var(--color-sage);
    margin: 0 auto var(--spacing-md);
}

/* ========================================
   Legal Pages
   ======================================== */

.legal-content {
    max-width: 900px;
    margin: 0 auto;
}

.legal-content h2 {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--color-border);
}

.legal-content h2:first-of-type {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.legal-content h3 {
    margin-top: var(--spacing-md);
    color: var(--color-sage);
}

.legal-content ul {
    margin: var(--spacing-sm) 0 var(--spacing-md) var(--spacing-md);
}

.legal-content ul li {
    margin-bottom: var(--spacing-xs);
}

.last-updated {
    color: var(--color-text-light);
    font-style: italic;
    margin-bottom: var(--spacing-md);
}

.policy-footer {
    background-color: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    margin-top: var(--spacing-lg);
}

/* ========================================
   CTA Section
   ======================================== */

.cta-section {
    background: linear-gradient(135deg, var(--color-sage) 0%, #4e7264 100%);
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.cta-content h2 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 1.125rem;
    color: var(--color-bg-light);
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-section .btn-outline {
    background-color: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.cta-section .btn-outline:hover {
    background-color: var(--color-white);
    color: var(--color-sage);
}

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

.main-footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3,
.footer-section h4 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.footer-section p {
    color: var(--color-bg-light);
    font-size: 0.9375rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
    color: var(--color-bg-light);
    transition: var(--transition-base);
}

.footer-section ul li a:hover {
    color: var(--color-white);
    padding-left: var(--spacing-xs);
}

.footer-section address {
    font-style: normal;
    color: var(--color-bg-light);
    line-height: 1.8;
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.footer-bottom p {
    color: var(--color-bg-light);
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer-links a {
    color: var(--color-bg-light);
    font-size: 0.875rem;
}

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

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

@media (max-width: 1024px) {
    .focus-content,
    .content-layout,
    .detail-layout,
    .terrain-layout,
    .contact-layout {
        grid-template-columns: 1fr;
    }
    
    .content-sidebar,
    .detail-sidebar,
    .terrain-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-xl: 3rem;
        --spacing-lg: 2rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .hero h1 {
        font-size: 2.25rem;
    }
    
    .nav-links {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        flex-direction: column;
        background-color: var(--color-primary);
        padding: var(--spacing-md);
        transition: left 0.3s ease;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .hero {
        min-height: 400px;
        padding: var(--spacing-lg) 0;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .section-grid,
    .areas-grid,
    .feature-grid,
    .principles-grid,
    .concept-grid,
    .integration-grid,
    .moisture-grid,
    .routing-grid,
    .seasonal-grid,
    .insights-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    .hero h1 {
        font-size: 1.875rem;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
}

/* ========================================
   Utility Classes
   ======================================== */

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

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ========================================
   FAQ Section
   ======================================== */

.faq-section {
    padding: var(--spacing-xl) 0;
}

.faq-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-xl);
}

.faq-category {
    max-width: 900px;
    margin: 0 auto var(--spacing-xl);
}

.faq-category > h2 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 3px solid var(--color-accent);
}

.faq-item {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
    transition: var(--transition-base);
}

.faq-item:hover {
    border-color: var(--color-sage);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    padding: var(--spacing-md);
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    transition: var(--transition-base);
}

.faq-question:hover {
    color: var(--color-sage);
}

.faq-icon {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: var(--spacing-md);
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer.active {
    max-height: 2000px;
}

.faq-answer > div {
    padding: 0 var(--spacing-md) var(--spacing-md);
    color: var(--color-text);
}

.faq-answer p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.faq-answer ul {
    margin: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-md);
    list-style-type: disc;
}

.faq-answer ul li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
}

/* ========================================
   Cookie Banner
   ======================================== */

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-md);
    box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.2);
    z-index: 9999;
    transform: translateY(100%);
    transition: transform 0.4s ease;
}

.cookie-banner.show {
    transform: translateY(0);
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.cookie-text {
    flex: 1;
    min-width: 250px;
}

.cookie-text p {
    margin-bottom: var(--spacing-xs);
    color: var(--color-bg-light);
}

.cookie-text a {
    color: var(--color-white);
    text-decoration: underline;
}

.cookie-text a:hover {
    color: var(--color-accent);
}

.cookie-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.cookie-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-base);
}

.cookie-btn-accept {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.cookie-btn-accept:hover {
    background-color: #9f5a2a;
}

.cookie-btn-decline {
    background-color: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

.cookie-btn-decline:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

@media (max-width: 768px) {
    .cookie-content {
        flex-direction: column;
        align-items: stretch;
    }
    
    .cookie-buttons {
        justify-content: stretch;
    }
    
    .cookie-btn {
        flex: 1;
        text-align: center;
    }
}

/* Print Styles */
@media print {
    .main-nav,
    .hero,
    .cta-section,
    .main-footer,
    .cookie-banner {
        display: none;
    }
    
    body {
        font-size: 12pt;
        color: #000;
    }
    
    a {
        text-decoration: underline;
        color: #000;
    }
}