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

:root {
    --color-primary: #2c5282;
    --color-primary-dark: #1a365d;
    --color-secondary: #553c9a;
    --color-accent: #805ad5;
    --color-text: #2d3748;
    --color-text-light: #718096;
    --color-background: #ffffff;
    --color-background-alt: #f7fafc;
    --color-border: #e2e8f0;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-family-heading: 'Georgia', serif;
    --max-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    --border-radius: 8px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --transition: 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

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

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

a:hover {
    color: var(--color-primary-dark);
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    border: 2px solid transparent;
}

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

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

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

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

/* Header */
.site-header {
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-sm) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo a {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-family-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

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

.logo-icon {
    font-size: 1.75rem;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.main-nav a {
    color: var(--color-text);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition);
}

.main-nav a:hover::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-text);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    color: white;
    padding: var(--spacing-xxl) 0;
    text-align: center;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

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

.hero .btn-primary {
    background-color: white;
    color: var(--color-primary-dark);
}

.hero .btn-primary:hover {
    background-color: var(--color-background-alt);
}

.hero .btn-secondary {
    border-color: white;
    color: white;
}

.hero .btn-secondary:hover {
    background-color: white;
    color: var(--color-primary-dark);
}

/* Features Section */
.features {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-background-alt);
}

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

.feature-card {
    background-color: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-xs);
}

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

/* Ink Reviews Section */
.ink-reviews {
    padding: var(--spacing-xxl) 0;
}

.section-intro {
    text-align: center;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

.ink-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.ink-card {
    background-color: var(--color-background);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition), box-shadow var(--transition);
}

.ink-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.ink-swatch {
    height: 120px;
    position: relative;
}

.ink-swatch::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 30px;
    background: linear-gradient(to top, rgba(0,0,0,0.1), transparent);
}

.ink-info {
    padding: var(--spacing-md);
}

.ink-info h3 {
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.ink-brand {
    color: var(--color-text-light);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.ink-properties {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.property {
    background-color: var(--color-background-alt);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--color-text-light);
}

.ink-excerpt {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: 0;
}

.section-cta {
    text-align: center;
    margin-top: var(--spacing-xl);
    color: var(--color-text-light);
    font-style: italic;
}

/* Guides Section */
.guides {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-background-alt);
}

.guides-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.guide-card {
    background-color: var(--color-background);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-primary);
    transition: transform var(--transition), box-shadow var(--transition);
}

.guide-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.guide-card h3 {
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-xs);
}

.guide-card p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.guide-tag {
    display: inline-block;
    background-color: var(--color-secondary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Newsletter Section */
.newsletter {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
    color: white;
    text-align: center;
}

.newsletter h2 {
    margin-bottom: var(--spacing-xs);
}

.newsletter p {
    opacity: 0.9;
}

.coming-soon {
    font-style: italic;
    opacity: 0.8;
}

/* About Section */
.about {
    padding: var(--spacing-xxl) 0;
}

/* Affiliate Products Section */
.affiliate-products {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-background-alt);
}

.affiliate-products h2 {
    text-align: center;
    margin-bottom: var(--spacing-xs);
}

.affiliate-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.affiliate-card {
    display: block;
    background-color: var(--color-background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
    text-decoration: none;
    color: inherit;
}

.affiliate-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    color: inherit;
}

.affiliate-info {
    padding: var(--spacing-lg);
}

.affiliate-info h3 {
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-xs);
    font-size: 1.1rem;
}

.affiliate-info p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.affiliate-cta {
    display: inline-block;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.875rem;
}

.about h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.about p {
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
    text-align: center;
    color: var(--color-text-light);
}

/* Footer */
.site-footer {
    background-color: var(--color-primary-dark);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.footer-brand .logo-icon {
    font-size: 2rem;
}

.footer-brand .logo-text {
    font-family: var(--font-family-heading);
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-brand p {
    margin-top: var(--spacing-sm);
    opacity: 0.8;
}

.footer-links h4 {
    margin-bottom: var(--spacing-sm);
    font-size: 1rem;
}

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

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

.footer-links a {
    color: white;
    opacity: 0.8;
    transition: opacity var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: var(--spacing-md);
    text-align: center;
    opacity: 0.8;
    font-size: 0.875rem;
}

.footer-bottom p {
    margin-bottom: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }

    .hero h1 {
        font-size: 2.25rem;
    }

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

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-background);
        border-bottom: 1px solid var(--color-border);
        padding: var(--spacing-md);
    }

    .main-nav.active {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .ink-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }
}