/* Watercolor Basics - Stylesheet */
:root {
    --primary-color: #2E6B8A;
    --primary-dark: #1E4A5F;
    --primary-light: #4A90A9;
    --accent-color: #C4785A;
    --accent-light: #D49A82;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #FAFAF8;
    --bg-warm: #FDF8F4;
    --card-bg: #fff;
    --border-color: #E5E1DC;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-hover: 0 4px 16px rgba(0,0,0,0.12);
    --radius: 8px;
    --transition: 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--bg-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header / Hero */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: #fff;
    padding: 60px 20px;
    text-align: center;
}

.hero h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
}

.hero .tagline {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Navigation */
.main-nav {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.main-nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    padding: 12px 0;
}

.main-nav a {
    color: var(--text-color);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-weight: 500;
    transition: all var(--transition);
}

.main-nav a:hover {
    background: var(--primary-color);
    color: #fff;
}

/* Content Sections */
.content-section {
    padding: 60px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.content-section h2 {
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 3px solid var(--accent-color);
    display: inline-block;
}

.content-section h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin: 30px 0 15px;
}

.content-section h4 {
    font-size: 1.1rem;
    color: var(--text-color);
    margin: 20px 0 10px;
}

.content-section p {
    margin-bottom: 15px;
    color: var(--text-light);
}

.content-section a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition);
}

.content-section a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* Supply Grid */
.supply-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 30px;
}

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

.supply-card h3 {
    margin-top: 0;
    color: var(--primary-dark);
    font-size: 1.2rem;
}

.supply-card ul {
    margin-left: 20px;
    color: var(--text-light);
}

.supply-card li {
    margin-bottom: 6px;
}

/* Tables */
.info-table-container {
    overflow-x: auto;
    margin: 20px 0;
}

.info-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
    overflow: hidden;
}

.info-table th,
.info-table td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.info-table th {
    background: var(--primary-color);
    color: #fff;
    font-weight: 600;
}

.info-table tbody tr:hover {
    background: var(--bg-warm);
}

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

/* Texture Cards */
.texture-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.texture-card {
    background: var(--card-bg);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--accent-color);
}

.texture-card h4 {
    margin-top: 0;
    color: var(--primary-dark);
}

.texture-best {
    font-size: 0.9rem;
    font-style: italic;
    color: var(--primary-color);
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

/* Brush Grid */
.brush-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin: 20px 0;
}

.brush-card {
    background: var(--bg-warm);
    padding: 20px;
    border-radius: var(--radius);
    text-align: center;
}

.brush-card h4 {
    margin-top: 0;
    color: var(--primary-dark);
}

.brush-card p {
    font-size: 0.9rem;
}

/* Tip List */
.tip-list {
    margin: 15px 0 15px 20px;
    color: var(--text-light);
}

.tip-list li {
    margin-bottom: 10px;
    line-height: 1.6;
}

/* Technique Grid */
.technique-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
    margin-top: 30px;
}

.technique-card {
    background: var(--card-bg);
    padding: 28px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border-top: 4px solid var(--primary-color);
}

.technique-card h3 {
    margin-top: 0;
    font-size: 1.3rem;
}

.technique-card ol {
    margin: 15px 0 15px 20px;
    color: var(--text-light);
}

.technique-card ol li {
    margin-bottom: 8px;
}

.technique-use {
    background: var(--bg-warm);
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    color: var(--primary-dark);
    margin-top: 15px;
}

/* Color Wheel Section */
.color-wheel-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin: 20px 0;
}

.color-category {
    background: var(--card-bg);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.color-category h4 {
    margin-top: 0;
}

.color-swatches {
    display: flex;
    gap: 12px;
    margin-top: 15px;
}

.swatch {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.15);
}

.primary-red { background: #C0392B; }
.primary-yellow { background: #F1C40F; }
.primary-blue { background: #2980B9; }
.secondary-orange { background: #E67E22; }
.secondary-green { background: #27AE60; }
.secondary-violet { background: #8E44AD; }

/* Temperature Grid */
.temp-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.temp-card {
    padding: 24px;
    border-radius: var(--radius);
}

.temp-card.warm {
    background: linear-gradient(135deg, #FDE8D7 0%, #FADCCC 100%);
    border-left: 4px solid #E67E22;
}

.temp-card.cool {
    background: linear-gradient(135deg, #D6EAF8 0%, #C9E0F5 100%);
    border-left: 4px solid #3498DB;
}

.temp-card h4 {
    margin-top: 0;
}

/* Palette List */
.palette-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
    margin: 20px 0;
}

.palette-color {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--card-bg);
    padding: 12px 16px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.palette-swatch {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.2);
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin: 30px 0;
}

.product-card {
    background: var(--card-bg);
    padding: 28px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: transform var(--transition), box-shadow var(--transition);
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.product-card h3 {
    font-size: 0.9rem;
    color: var(--accent-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0 0 8px;
}

.product-card h4 {
    font-size: 1.2rem;
    color: var(--primary-dark);
    margin: 0 0 12px;
}

.product-card ul {
    margin: 15px 0 20px 18px;
    color: var(--text-light);
}

.product-card li {
    margin-bottom: 6px;
    font-size: 0.95rem;
}

.product-link {
    display: inline-block;
    background: var(--accent-color);
    color: #fff !important;
    padding: 12px 24px;
    border-radius: var(--radius);
    text-decoration: none !important;
    font-weight: 600;
    transition: background var(--transition);
}

.product-link:hover {
    background: var(--accent-light);
}

/* Starter Kit Box */
.starter-kit-box {
    background: linear-gradient(135deg, var(--bg-warm) 0%, #FDF5EF 100%);
    padding: 30px;
    border-radius: var(--radius);
    border: 2px solid var(--accent-color);
    margin-top: 40px;
}

.starter-kit-box h3 {
    color: var(--primary-dark);
    margin-top: 0;
}

.starter-kit-box ol {
    margin: 20px 0 20px 24px;
}

.starter-kit-box li {
    margin-bottom: 10px;
    color: var(--text-color);
}

/* Tips Grid */
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.tip-card {
    background: var(--card-bg);
    padding: 24px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary-color);
}

.tip-card h3 {
    margin-top: 0;
    font-size: 1.1rem;
    color: var(--primary-dark);
}

/* FAQ Section */
.faq-list {
    margin-top: 20px;
}

.faq-item {
    background: var(--card-bg);
    padding: 24px;
    margin-bottom: 16px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.faq-item h3 {
    color: var(--primary-dark);
    font-size: 1.1rem;
    margin: 0 0 12px;
}

.faq-item p {
    margin-bottom: 0;
}

/* Footer */
footer {
    background: var(--primary-dark);
    color: #fff;
    padding: 40px 20px;
    text-align: center;
    margin-top: 40px;
}

footer p {
    margin-bottom: 10px;
    opacity: 0.9;
}

.affiliate-disclosure {
    font-size: 0.85rem;
    opacity: 0.7;
    max-width: 600px;
    margin: 0 auto;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero .tagline {
        font-size: 1rem;
    }

    .main-nav ul {
        gap: 4px;
    }

    .main-nav a {
        padding: 6px 12px;
        font-size: 0.85rem;
    }

    .content-section {
        padding: 40px 0;
    }

    .content-section h2 {
        font-size: 1.6rem;
    }

    .supply-grid,
    .technique-grid,
    .product-grid,
    .tips-grid {
        grid-template-columns: 1fr;
    }

    .texture-cards,
    .brush-grid,
    .temp-grid,
    .color-wheel-info {
        grid-template-columns: 1fr;
    }

    .palette-list {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 40px 15px;
    }

    .container {
        padding: 0 15px;
    }

    .palette-list {
        grid-template-columns: 1fr;
    }

    .info-table th,
    .info-table td {
        padding: 10px 12px;
        font-size: 0.9rem;
    }
}