/* Reset and Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-wood-dark: #5D4037;
    --color-wood-medium: #8D6E63;
    --color-wood-light: #D7CCC8;
    --color-cream: #FFF8E7;
    --color-white: #FFFFFF;
    --color-text: #3E2723;
    --color-text-light: #5D4037;
    --color-accent: #4CAF50;
    --color-accent-dark: #388E3C;
    --color-warning: #FF9800;
    --color-excellent: #4CAF50;
    --color-good: #8BC34A;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.15);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4 {
    line-height: 1.3;
    color: var(--color-wood-dark);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--color-wood-light);
}

h3 {
    font-size: 1.4rem;
    margin: 1.5rem 0 1rem;
}

h4 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}

p {
    margin-bottom: 1rem;
}

a {
    color: var(--color-accent-dark);
    text-decoration: none;
    transition: color 0.2s;
}

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

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

.hero h1 {
    color: var(--color-white);
    font-size: 3rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.tagline {
    font-size: 1.25rem;
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto;
}

/* Navigation */
.main-nav {
    background: var(--color-wood-dark);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.main-nav ul {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    list-style: none;
    padding: 0;
    gap: 5px;
}

.main-nav a {
    display: block;
    color: var(--color-cream);
    padding: 15px 18px;
    font-weight: 500;
    transition: background-color 0.2s;
}

.main-nav a:hover {
    background-color: var(--color-wood-medium);
    text-decoration: none;
}

/* Sections */
.section {
    background: var(--color-white);
    padding: 40px;
    margin: 30px 0;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-top: 25px;
}

.info-card {
    background: var(--color-cream);
    padding: 25px;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-accent);
}

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

/* Steps List */
.steps-list {
    margin: 20px 0;
    padding-left: 0;
    counter-reset: step;
    list-style: none;
}

.steps-list li {
    position: relative;
    padding: 15px 15px 15px 60px;
    margin-bottom: 10px;
    background: var(--color-cream);
    border-radius: var(--radius-md);
    counter-increment: step;
}

.steps-list li::before {
    content: counter(step);
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    background: var(--color-accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

/* Warning Box */
.warning-box {
    background: #FFF3E0;
    border: 1px solid var(--color-warning);
    border-left: 4px solid var(--color-warning);
    padding: 20px 25px;
    border-radius: var(--radius-md);
    margin: 25px 0;
}

.warning-box h4 {
    color: #E65100;
    margin-bottom: 10px;
}

.warning-box ul {
    margin: 0;
    padding-left: 20px;
}

.warning-box li {
    margin-bottom: 5px;
}

/* Method Cards */
.method-card {
    background: var(--color-cream);
    padding: 25px;
    border-radius: var(--radius-md);
    margin: 20px 0;
    border: 1px solid var(--color-wood-light);
}

.method-card h4 {
    color: var(--color-wood-dark);
    margin-bottom: 10px;
}

.method-card p {
    margin-bottom: 0;
}

/* Frequency Guide */
.frequency-guide {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 25px;
}

.frequency-item {
    background: linear-gradient(to bottom right, var(--color-cream), var(--color-white));
    padding: 25px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-wood-light);
}

.frequency-item h4 {
    color: var(--color-accent-dark);
    margin-bottom: 10px;
}

.frequency-item p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* Problem Cards */
.problem-card {
    background: var(--color-white);
    border: 1px solid var(--color-wood-light);
    border-radius: var(--radius-md);
    padding: 25px;
    margin: 20px 0;
    box-shadow: var(--shadow-sm);
}

.problem-card h3 {
    color: var(--color-wood-dark);
    margin-top: 0;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-wood-light);
}

.problem-card p {
    margin-bottom: 10px;
}

.problem-card p:last-child {
    margin-bottom: 0;
}

/* Wood Grid */
.wood-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin: 25px 0;
}

.wood-card {
    background: var(--color-white);
    border: 1px solid var(--color-wood-light);
    border-radius: var(--radius-md);
    padding: 25px;
    position: relative;
    overflow: hidden;
}

.wood-card h3 {
    margin-top: 0;
    margin-bottom: 10px;
}

.wood-card .rating {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    text-transform: uppercase;
    margin-bottom: 15px;
}

.wood-card.excellent .rating {
    background: var(--color-excellent);
    color: white;
}

.wood-card.good .rating {
    background: var(--color-good);
    color: white;
}

.wood-card p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* Comparison Table */
.comparison-table {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin: 25px 0;
}

.comparison-column {
    background: var(--color-cream);
    padding: 25px;
    border-radius: var(--radius-md);
}

.comparison-column h4 {
    color: var(--color-wood-dark);
    font-size: 1.3rem;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-wood-light);
}

.comparison-column ul {
    list-style: none;
    padding: 0;
}

.comparison-column li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
}

.comparison-column li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 25px;
}

.product-card {
    background: var(--color-cream);
    border: 1px solid var(--color-wood-light);
    border-radius: var(--radius-md);
    padding: 25px;
    display: flex;
    flex-direction: column;
}

.product-card h3 {
    color: var(--color-accent-dark);
    font-size: 0.9rem;
    text-transform: uppercase;
    margin: 0 0 5px 0;
    letter-spacing: 0.5px;
}

.product-card h4 {
    color: var(--color-wood-dark);
    margin-bottom: 15px;
}

.product-card p {
    flex-grow: 1;
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.btn {
    display: inline-block;
    background: var(--color-accent);
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-align: center;
    transition: background-color 0.2s, transform 0.2s;
}

.btn:hover {
    background: var(--color-accent-dark);
    text-decoration: none;
    transform: translateY(-2px);
}

/* FAQ Section */
.faq-section {
    background: linear-gradient(to bottom, var(--color-white), var(--color-cream));
}

.faq-item {
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid var(--color-wood-light);
}

.faq-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.faq-item h3 {
    color: var(--color-wood-dark);
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.faq-item p {
    margin-bottom: 0;
    color: var(--color-text-light);
}

/* Footer */
footer {
    background: var(--color-wood-dark);
    color: var(--color-cream);
    padding: 30px 20px;
    text-align: center;
    margin-top: 40px;
}

footer p {
    margin-bottom: 10px;
}

footer .affiliate-disclosure {
    font-size: 0.85rem;
    opacity: 0.8;
    max-width: 600px;
    margin: 10px auto 0;
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 40px 20px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1.1rem;
    }

    .main-nav ul {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding: 0 10px;
    }

    .main-nav a {
        padding: 12px 14px;
        font-size: 0.9rem;
        white-space: nowrap;
    }

    .section {
        padding: 25px 20px;
        margin: 20px 10px;
    }

    h2 {
        font-size: 1.6rem;
    }

    h3 {
        font-size: 1.2rem;
    }

    .steps-list li {
        padding-left: 50px;
    }

    .steps-list li::before {
        width: 28px;
        height: 28px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.75rem;
    }

    .container {
        padding: 0 15px;
    }

    .info-grid,
    .frequency-guide,
    .wood-grid,
    .products-grid,
    .comparison-table {
        grid-template-columns: 1fr;
    }
}