/* Modern Minimal Design for Alterna: Ultimate Separation Book Website */

:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #ffffff;
    --bg-light: #f8f9fa;
    --border-color: #e0e0e0;
    --max-width: 1200px;
    --spacing: 1.5rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

a {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    touch-action: manipulation;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Header and Navigation */
header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    -webkit-overflow-scrolling: touch;
}

nav {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing);
}

nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: rgba(255, 255, 255, 0.2);
    touch-action: manipulation;
    min-height: 44px;
}

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

@media (hover: hover) {
    nav a:hover {
        background-color: rgba(255, 255, 255, 0.1);
    }
}

/* Main Content */
main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing);
    min-height: calc(100vh - 200px);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 3rem 0;
    background: linear-gradient(135deg, var(--bg-light) 0%, var(--bg-color) 100%);
    margin: -var(--spacing) -var(--spacing) var(--spacing) -var(--spacing);
    border-bottom: 1px solid var(--border-color);
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.hero .subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.book-cover-container {
    margin: 2rem 0;
}

.book-cover {
    max-width: 300px;
    width: 100%;
    height: auto;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    border-radius: 4px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    background-color: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    transition: background-color 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    min-height: 44px;
    min-width: 44px;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    touch-action: manipulation;
    -webkit-appearance: none;
    appearance: none;
}

@media (hover: hover) {
    .btn:hover {
        background-color: #2980b9;
        transform: translateY(-2px);
    }
}

.btn:active {
    background-color: #21618c;
    transform: scale(0.98);
}

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

.btn-secondary:hover {
    background-color: #2c3e50;
}

/* Sections */
section {
    margin-bottom: 3rem;
}

section h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 0.5rem;
}

section h3 {
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

/* Content Cards */
.content-card {
    background-color: var(--bg-light);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Two Column Layout */
.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

/* Purchase Links */
.purchase-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.purchase-link-card {
    background-color: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    border: 2px solid var(--border-color);
    transition: border-color 0.3s ease;
    touch-action: manipulation;
}

@media (hover: hover) {
    .purchase-link-card:hover {
        border-color: var(--accent-color);
        transform: translateY(-4px);
    }
}

.purchase-link-card:active {
    border-color: var(--accent-color);
    transform: scale(0.98);
}

.purchase-link-card h3 {
    margin-top: 0;
    color: var(--primary-color);
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 2rem auto;
    background-color: var(--bg-light);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-error {
    color: #e74c3c;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.form-success {
    background-color: #2ecc71;
    color: white;
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    text-align: center;
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    padding: 2rem var(--spacing);
    margin-top: 4rem;
}

footer p {
    margin: 0.5rem 0;
}

/* Author Photo */
.author-photo {
    max-width: 300px;
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    margin: 1rem 0;
}

/* iOS Safari specific fixes */
@supports (-webkit-touch-callout: none) {
    body {
        -webkit-text-size-adjust: 100%;
    }
    
    input, textarea, select {
        font-size: 16px !important;
    }
}

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

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

    .two-column {
        grid-template-columns: 1fr;
    }

    nav ul {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }

    nav a {
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
        min-height: 44px;
        font-size: 0.9rem;
        padding: 0.5rem 0.75rem;
    }

    main {
        padding: 1rem;
    }

    section h2 {
        font-size: 1.75rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 2rem 0;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .book-cover {
        max-width: 200px;
    }
}

/* Print Styles */
@media print {
    header,
    footer,
    nav {
        display: none;
    }

    main {
        max-width: 100%;
        padding: 0;
    }
}