/* Fountain Pen Guide - Styles */

:root {
    --primary-color: #1a365d;
    --secondary-color: #2c5282;
    --accent-color: #3182ce;
    --accent-light: #63b3ed;
    --gold-color: #d69e2e;
    --text-dark: #1a202c;
    --text-medium: #4a5568;
    --text-light: #718096;
    --bg-light: #f7fafc;
    --bg-cream: #fffbf0;
    --border-color: #e2e8f0;
    --white: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

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

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

.hero h1 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: -0.5px;
}

.hero .tagline {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

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

.main-nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 5px;
    padding: 15px 0;
}

.main-nav a {
    color: var(--text-medium);
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
}

.main-nav a:hover {
    color: var(--accent-color);
    background: var(--bg-light);
}

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

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

.content-section h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    position: relative;
}

.content-section h3 {
    font-size: 1.35rem;
    color: var(--secondary-color);
    margin: 35px 0 15px;
}

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

.content-section p {
    color: var(--text-medium);
    margin-bottom: 15px;
    font-size: 1.05rem;
}

.content-section ul,
.content-section ol {
    margin: 15px 0 20px 25px;
    color: var(--text-medium);
}

.content-section li {
    margin-bottom: 10px;
}

/* Benefits Grid */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.benefit-card {
    background: var(--bg-light);
    padding: 25px;
    border-radius: 10px;
    border-left: 4px solid var(--accent-color);
}

.benefit-card h3 {
    margin-top: 0;
    font-size: 1.15rem;
}

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

/* Nib List */
.nib-list {
    background: var(--bg-cream);
    padding: 25px 25px 25px 45px;
    border-radius: 8px;
    margin: 20px 0;
}

.nib-list li {
    margin-bottom: 12px;
}

.tip {
    background: linear-gradient(135deg, #ebf8ff 0%, #e6fffa 100%);
    padding: 15px 20px;
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
    margin: 25px 0;
}

/* Fill Systems */
.fill-systems {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.fill-card {
    background: var(--white);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.fill-card h4 {
    color: var(--secondary-color);
}

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

/* Product Grid */
.featured {
    background: var(--bg-light);
    margin: 0 -20px;
    padding: 60px 20px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.product-card {
    background: var(--white);
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--shadow-md);
    position: relative;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.product-badge {
    position: absolute;
    top: -10px;
    left: 20px;
    background: var(--gold-color);
    color: var(--white);
    padding: 5px 12px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.product-card h3 {
    margin-top: 15px;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.product-card .price {
    color: var(--accent-color);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 15px;
}

.product-card > p {
    font-size: 0.95rem;
    flex-grow: 1;
}

.product-features {
    list-style: none;
    margin: 15px 0;
    padding: 0;
}

.product-features li {
    padding: 5px 0 5px 20px;
    position: relative;
    font-size: 0.9rem;
    color: var(--text-medium);
}

.product-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* CTA Buttons */
.cta-button {
    display: inline-block;
    background: var(--accent-color);
    color: var(--white);
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    text-align: center;
    margin-top: auto;
}

.cta-button:hover {
    background: var(--secondary-color);
    transform: translateY(-1px);
}

.cta-button.primary {
    background: var(--gold-color);
    padding: 15px 35px;
    font-size: 1.1rem;
}

.cta-button.primary:hover {
    background: #b7791f;
}

.cta-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
}

.cta-link:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* Ink Section */
.ink-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.ink-card {
    background: var(--bg-light);
    padding: 25px;
    border-radius: 10px;
}

.ink-card h4 {
    color: var(--secondary-color);
    margin-bottom: 10px;
}

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

.ink-recommendations {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 25px;
}

.ink-rec-card {
    background: var(--white);
    padding: 25px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.ink-color {
    width: 100%;
    height: 60px;
    border-radius: 6px;
    margin-bottom: 15px;
}

.ink-rec-card h4 {
    color: var(--primary-color);
}

.ink-rec-card p {
    font-size: 0.95rem;
}

/* Paper Section */
.paper-features {
    background: var(--bg-cream);
    padding: 25px 25px 25px 45px;
    border-radius: 8px;
    margin: 20px 0;
}

.paper-recommendation {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    border: 2px solid var(--accent-light);
    margin: 25px 0;
}

.paper-recommendation h4 {
    font-size: 1.3rem;
    color: var(--primary-color);
}

.paper-recommendation ul {
    margin-bottom: 20px;
}

.paper-tip {
    background: var(--bg-light);
    padding: 25px;
    border-radius: 10px;
    margin-top: 25px;
}

.paper-tip h4 {
    color: var(--secondary-color);
}

.paper-tip p {
    margin-bottom: 0;
}

/* Maintenance Section */
.maintenance-steps {
    background: var(--white);
    padding: 25px 25px 25px 45px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    margin: 20px 0;
}

.maintenance-steps li {
    margin-bottom: 15px;
    padding-left: 10px;
}

.storage-tips {
    background: var(--bg-cream);
    padding: 25px 25px 25px 45px;
    border-radius: 8px;
}

.issues-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 25px;
}

.issue-card {
    background: var(--bg-light);
    padding: 25px;
    border-radius: 10px;
    border-top: 4px solid var(--accent-color);
}

.issue-card h4 {
    color: var(--secondary-color);
}

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

/* Writing Tips Section */
.technique-tips {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 25px;
}

.tip-card {
    background: var(--white);
    padding: 25px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.tip-card h4 {
    color: var(--secondary-color);
    margin-bottom: 10px;
}

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

/* CTA Section */
.cta-section {
    text-align: center;
    background: linear-gradient(135deg, var(--bg-cream) 0%, #fff5e6 100%);
    border-radius: 12px;
    margin: 40px 0;
    padding: 50px 30px;
}

.cta-section h2 {
    margin-bottom: 15px;
}

.cta-section p {
    max-width: 600px;
    margin: 0 auto 25px;
    font-size: 1.1rem;
}

.starter-kit {
    margin-top: 20px;
}

/* Footer */
footer {
    background: var(--primary-color);
    color: var(--white);
    padding: 40px 20px;
    text-align: center;
}

footer p {
    margin: 10px 0;
    font-size: 0.95rem;
}

.affiliate-disclosure {
    opacity: 0.8;
    font-size: 0.85rem !important;
    max-width: 600px;
    margin: 15px auto 0 !important;
}

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

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

    .hero .tagline {
        font-size: 1.1rem;
    }

    .main-nav ul {
        gap: 0;
    }

    .main-nav a {
        padding: 8px 12px;
        font-size: 0.85rem;
    }

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

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

    .content-section h3 {
        font-size: 1.2rem;
    }

    .featured {
        margin: 0 -20px;
        padding: 40px 20px;
    }

    .product-grid,
    .benefits-grid,
    .ink-types,
    .ink-recommendations,
    .issues-grid,
    .technique-tips {
        grid-template-columns: 1fr;
    }

    .cta-section {
        padding: 35px 20px;
    }
}

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

    .main-nav ul {
        flex-direction: column;
        align-items: center;
    }

    .main-nav a {
        display: block;
        width: 100%;
        text-align: center;
    }

    .product-card,
    .ink-rec-card,
    .paper-recommendation {
        padding: 20px;
    }
}