/* ===================================
   Lore Leys Buchwerkstatt - Main CSS
   Warm, persönlich, professionell
   =================================== */

/* === CSS Variables === */
:root {
    /* Colors */
    --color-primary: #8B9D83;        /* Salbeigrün - Ruhe & Kraft */
    --color-secondary: #E8DCC4;      /* Warmes Beige - Erdung */
    --color-accent: #C87941;         /* Terrakotta - Lebendigkeit */
    --color-gold: #D4A574;           /* Sanftes Gold - Wertschätzung */
    --color-dark: #4A4238;           /* Warmes Dunkelbraun */
    --color-text: #333333;
    --color-text-light: #666666;
    --color-bg: #F5F1E8;             /* Cremiges Beige */
    --color-bg-light: #EDE6D6;       /* Helles Beige */
    --color-border: #D4C4A8;
    
    /* Typography */
    --font-heading: 'Cormorant Garamond', serif;
    --font-body: 'Lato', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Transitions */
    --transition: all 0.3s ease;
}

/* === Reset & Base === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }

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

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

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

/* === Container === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, #7A8A73 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(139, 157, 131, 0.4);
    color: white;
}

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

.btn-secondary:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

.btn-disabled {
    background: #cccccc;
    color: #666666;
    cursor: not-allowed;
    opacity: 0.7;
}

.btn-disabled:hover {
    transform: none;
    box-shadow: none;
}

/* === Navigation === */
.navbar {
    background: linear-gradient(135deg, #F5F1E8 0%, #E8DCC4 100%);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(139, 157, 131, 0.15);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

.nav-brand {
    text-align: left;
}

.brand-name {
    font-size: 1.75rem;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.brand-tagline {
    font-size: 0.875rem;
    color: var(--color-text-light);
    font-style: italic;
    margin: 0;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
    align-items: center;
}

.nav-link {
    font-weight: 600;
    color: var(--color-text);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    background: var(--color-secondary);
    color: var(--color-primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 3px;
    transition: var(--transition);
}

/* === Hero Section === */
.hero {
    background: linear-gradient(135deg, var(--color-secondary) 0%, #F5F1E8 50%, var(--color-bg) 100%);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 2.75rem;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

.hero-divider {
    font-size: 3rem;
    color: var(--color-accent);
    margin: var(--spacing-sm) 0;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--color-text-light);
    font-style: italic;
    margin-bottom: var(--spacing-md);
}

.hero-text {
    text-align: left;
    margin: var(--spacing-lg) auto;
    padding: var(--spacing-md);
    background: rgba(245, 241, 232, 0.9);
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(139, 157, 131, 0.1);
}

.hero-text p {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.hero-signature {
    color: var(--color-primary);
    font-weight: 600;
}

/* === Section Titles === */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 3px;
}

.section-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    font-size: 1.125rem;
    color: var(--color-text-light);
}

/* === Books Section === */
.books-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-light);
}

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

.book-card {
    background: var(--color-bg);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(139, 157, 131, 0.15);
    transition: var(--transition);
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.book-card:nth-child(1) { animation-delay: 0.1s; }
.book-card:nth-child(2) { animation-delay: 0.2s; }
.book-card:nth-child(3) { animation-delay: 0.3s; }

.book-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(139, 157, 131, 0.25);
}

.book-card-new {
    border: 3px solid var(--color-accent);
}

.book-cover {
    position: relative;
    overflow: hidden;
    background: var(--color-secondary);
    flex-shrink: 0;
}

.book-cover img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.book-card:hover .book-cover img {
    transform: scale(1.05);
}

.book-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--color-primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.book-badge-creative {
    background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
}

.book-badge-new {
    background: linear-gradient(135deg, var(--color-gold), var(--color-accent));
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.book-info {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.book-title {
    font-size: 1.75rem;
    color: var(--color-dark);
    margin-bottom: 0.5rem;
}

.book-subtitle {
    font-size: 1rem;
    color: var(--color-text-light);
    font-style: italic;
    margin-bottom: var(--spacing-sm);
}

.book-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.book-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: auto;
}

.book-actions .btn {
    flex: 1;
    min-width: 140px;
    justify-content: center;
}

/* === About Teaser === */
.about-teaser {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--color-bg-light) 0%, var(--color-secondary) 100%);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.about-content .btn {
    margin-top: var(--spacing-md);
}

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

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-brand h3 {
    color: var(--color-secondary);
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-style: italic;
}

.footer-links h4 {
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    font-size: 1.125rem;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--color-secondary);
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.25rem;
    transition: var(--transition);
    padding-left: 0 !important;
}

.social-icon:hover {
    background: var(--color-secondary);
    color: var(--color-dark);
    transform: translateY(-3px);
    padding-left: 0 !important;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    margin: 0;
}

/* === Back to Top Button === */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-primary);
    transform: translateY(-5px);
}

/* === Animations === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === Responsive Design === */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--color-bg);
        flex-direction: column;
        justify-content: flex-start;
        padding: var(--spacing-md);
        box-shadow: 0 5px 20px rgba(139, 157, 131, 0.2);
        transition: left 0.3s ease;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-text p {
        font-size: 1rem;
    }
    
    .books-grid {
        grid-template-columns: 1fr;
    }
    
    .book-actions {
        flex-direction: column;
    }
    
    .book-actions .btn {
        width: 100%;
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    :root {
        --spacing-xl: 2.5rem;
        --spacing-lg: 2rem;
    }
    
    .brand-name {
        font-size: 1.25rem;
    }
    
    .hero {
        padding: var(--spacing-md) 0;
    }
}