/**
 * Between Marcy & Nostrand Publishing - Main Stylesheet
 * Mobile-first, responsive design with NYC brownstone/subway tile color palette
 */

/* ===== CSS Variables ===== */
:root {
    /* Color Palette - NYC Brownstone & Subway Tiles */
    --color-primary: #8B4513; /* Brownstone */
    --color-secondary: #D4A574; /* Warm tan */
    --color-accent: #2C5F7C; /* Subway blue */
    --color-accent-light: #4A8BAD;
    --color-dark: #1A1A1A; /* Deep charcoal */
    --color-dark-bg: #1F1F1F; /* Dark background */
    --color-light: #F5F5F0; /* Off-white */
    --color-white: #FFFFFF;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-text-on-dark: #E5E5E5;
    --color-border: #E0E0E0;
    --color-green-accent: #4A7C59; /* Street sign green */
    
    /* Typography */
    --font-primary: 'Georgia', 'Times New Roman', serif;
    --font-secondary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    /* Layout */
    --container-max-width: 1200px;
    --border-radius: 4px;
    --border-radius-lg: 12px;
    --border-radius-pill: 50px;
    
    /* Animations */
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    color: var(--color-text);
    line-height: 1.7;
    background-color: var(--color-white);
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(212, 165, 116, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(44, 95, 124, 0.03) 0%, transparent 50%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

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

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: linear-gradient(to bottom, rgba(0,0,0,0.45) 0%, rgba(0,0,0,0.35) 50%, rgba(31,31,31,0.9) 85%, #1F1F1F 100%),
                url('../img/header-bg.png') center center / cover no-repeat;
    padding: var(--spacing-sm) 0;
}

.header-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.logo {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.logo-image {
    height: 80px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    display: block;
    transition: transform 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.5));
}

.logo-tagline {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.95);
    text-shadow: 0 1px 3px rgba(0,0,0,0.8), 0 0 8px rgba(0,0,0,0.5);
    font-style: normal;
    letter-spacing: 0.05em;
    margin-bottom: 0;
    margin-top: var(--spacing-xs);
}

.logo a {
    color: inherit;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.logo a:hover {
    color: var(--color-secondary);
}
.logo a:hover .logo-tagline {
    color: var(--color-white);
}

.logo a:hover .logo-image {
    transform: scale(1.03);
}

/* Navigation */
.main-nav {
    position: relative;
}

.nav-toggle {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    margin-left: auto;
    flex-direction: column;
    gap: 4px;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-white);
    box-shadow: 0 0 4px rgba(0,0,0,0.5);
    transition: all 0.3s ease;
}

.nav-menu {
    list-style: none;
    display: none;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.nav-menu.active {
    display: flex;
}

.nav-menu li a {
    display: block;
    padding: var(--spacing-sm);
    color: var(--color-white);
    text-shadow: 0 1px 3px rgba(0,0,0,0.8), 0 0 6px rgba(0,0,0,0.5);
    background-color: rgba(0,0,0,0.35);
    border-radius: var(--border-radius-pill);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    background-color: rgba(0,0,0,0.55);
    color: var(--color-white);
    text-shadow: 0 1px 4px rgba(0,0,0,0.9);
}

.cart-link {
    font-weight: 600;
    color: var(--color-secondary) !important;
    text-shadow: 0 1px 3px rgba(0,0,0,0.8);
}

/* ===== Main Content ===== */
.main-content {
    flex: 1;
    padding: 0 0 var(--spacing-lg) 0;
}

/* ===== Hero Section (Legacy - for other pages) ===== */
.hero {
    background: linear-gradient(135deg, var(--color-light) 0%, rgba(212, 165, 116, 0.1) 50%, var(--color-white) 100%);
    padding: var(--spacing-xl) 0;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(139, 69, 19, 0.03) 10px, rgba(139, 69, 19, 0.03) 20px);
    pointer-events: none;
}

.hero > .container {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
    text-shadow: 0 2px 4px rgba(0,0,0,0.05);
    letter-spacing: -0.02em;
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: center;
}

/* ===== Full-Screen Cinematic Hero ===== */
.hero-fullscreen {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--color-dark-bg) 0%, #2A2A2A 50%, var(--color-dark-bg) 100%);
    position: relative;
    display: flex;
    align-items: center;
    padding: var(--spacing-xl) 0;
    overflow: hidden;
}

.hero-fullscreen::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(139, 69, 19, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(74, 124, 173, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    position: relative;
    z-index: 1;
    width: 100%;
}

.hero-text {
    text-align: center;
    animation: fadeInUp 0.8s ease-out;
}

.hero-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-secondary);
}

.hero-headline {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subhead {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text-on-dark);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: center;
    margin-top: var(--spacing-lg);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 1s ease-out 0.3s both;
}

.book-stack {
    position: relative;
    perspective: 1000px;
}

.stack-cover {
    width: 100%;
    max-width: 300px;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.1);
    transition: var(--transition-smooth);
    transform: rotateY(-5deg) rotateX(2deg);
}

.stack-cover:hover {
    transform: rotateY(0deg) rotateX(0deg) scale(1.02);
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.15);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-smooth);
    text-decoration: none;
    font-family: var(--font-secondary);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

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

.btn-primary:hover {
    background-color: var(--color-accent-light);
    color: var(--color-white);
    box-shadow: 0 4px 8px rgba(44, 95, 124, 0.3);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 4px 8px rgba(139, 69, 19, 0.3);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--color-accent);
    color: var(--color-accent);
    box-shadow: none;
}

.btn-outline:hover {
    background-color: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 4px 8px rgba(44, 95, 124, 0.2);
    transform: translateY(-2px);
}

/* Premium Hero Buttons */
.btn-hero-primary {
    background-color: var(--color-secondary);
    color: var(--color-dark);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.05rem;
    border-radius: var(--border-radius-pill);
    box-shadow: 0 4px 12px rgba(212, 165, 116, 0.3);
    font-weight: 700;
}

.btn-hero-primary:hover {
    background-color: var(--color-white);
    color: var(--color-dark);
    box-shadow: 0 6px 20px rgba(212, 165, 116, 0.4);
    transform: translateY(-3px);
}

.btn-hero-secondary {
    background-color: transparent;
    color: var(--color-white);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.05rem;
    border: 2px solid var(--color-white);
    border-radius: var(--border-radius-pill);
    font-weight: 700;
    box-shadow: none;
}

.btn-hero-secondary:hover {
    background-color: var(--color-white);
    color: var(--color-dark);
    box-shadow: 0 6px 20px rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

.btn-featured {
    background-color: var(--color-dark);
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.9rem;
    border-radius: var(--border-radius-pill);
    font-weight: 600;
    margin-top: var(--spacing-sm);
}

.btn-featured:hover {
    background-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(139, 69, 19, 0.3);
}

.btn-teaser {
    background-color: var(--color-secondary);
    color: var(--color-dark);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.05rem;
    border-radius: var(--border-radius-pill);
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(212, 165, 116, 0.3);
}

.btn-teaser:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 6px 20px rgba(139, 69, 19, 0.4);
    transform: translateY(-3px);
}

/* ===== Sections ===== */
.section {
    margin-bottom: var(--spacing-xl);
}

.section-alt {
    background-color: rgba(245, 245, 240, 0.4);
    padding: var(--spacing-xl) 0;
    margin-left: calc(var(--spacing-md) * -1);
    margin-right: calc(var(--spacing-md) * -1);
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
    border-radius: 8px;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-secondary), transparent);
}

.section-label {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-secondary);
    text-align: center;
}

/* ===== Featured Works Strip ===== */
.featured-works {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-white);
    animation: fadeInUp 0.8s ease-out;
}

.featured-books-strip {
    display: flex;
    gap: var(--spacing-lg);
    overflow-x: auto;
    padding: var(--spacing-md) 0;
    scroll-snap-type: x mandatory;
    scrollbar-width: thin;
    -webkit-overflow-scrolling: touch;
}

.featured-books-strip::-webkit-scrollbar {
    height: 6px;
}

.featured-books-strip::-webkit-scrollbar-track {
    background: var(--color-light);
    border-radius: 3px;
}

.featured-books-strip::-webkit-scrollbar-thumb {
    background: var(--color-secondary);
    border-radius: 3px;
}

.featured-book-card {
    flex: 0 0 calc(100% - var(--spacing-md));
    max-width: 350px;
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    transition: var(--transition-smooth);
    scroll-snap-align: start;
    display: flex;
    flex-direction: column;
}

.featured-book-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

.featured-cover {
    width: 100%;
    height: 400px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--color-light) 0%, rgba(212, 165, 116, 0.2) 100%);
}

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

.featured-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
    line-height: 1.3;
}

.featured-subtitle {
    font-size: 0.95rem;
    color: var(--color-text-light);
    font-style: italic;
    margin-bottom: var(--spacing-sm);
}

.featured-teaser {
    font-size: 0.9rem;
    color: var(--color-text);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

/* ===== About 3uro De la Ghetto Minimal ===== */
.about-gee-minimal {
    padding: var(--spacing-xxl) 0;
    background-color: var(--color-light);
    animation: fadeInUp 0.8s ease-out;
}

.about-gee-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

.about-gee-text {
    text-align: center;
}

.about-gee-bio {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
}

.about-gee-link {
    display: inline-block;
    font-weight: 600;
    color: var(--color-accent);
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

.about-gee-link:hover {
    color: var(--color-primary);
    transform: translateX(4px);
}

.about-gee-image {
    display: flex;
    justify-content: center;
}

.gee-portrait {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    object-position: center 25%;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    border: 4px solid var(--color-white);
    transition: var(--transition-smooth);
}

.gee-portrait:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

/* ===== Custom Storybooks Teaser ===== */
.custom-storybooks-teaser {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-light) 100%);
    animation: fadeInUp 0.8s ease-out;
}

.teaser-headline {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    color: var(--color-dark);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.teaser-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.teaser-features {
    list-style: none;
    margin-bottom: var(--spacing-lg);
    text-align: left;
    display: inline-block;
}

.teaser-features li {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-md);
    position: relative;
}

.teaser-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-weight: 700;
}

.teaser-features li strong {
    color: var(--color-dark);
    font-weight: 700;
}

/* ===== Book Grid ===== */
.books-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.book-card {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.book-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    border-color: var(--color-accent-light);
}

.book-cover {
    width: 100%;
    height: 300px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--color-light) 0%, rgba(212, 165, 116, 0.2) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

.book-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.book-cover::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(45deg, transparent, transparent 20px, rgba(139, 69, 19, 0.05) 20px, rgba(139, 69, 19, 0.05) 40px);
    z-index: 0;
}

.book-card-content {
    padding: var(--spacing-md);
    background-color: var(--color-white);
}

.book-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-dark);
}

.book-card .subtitle {
    font-size: 0.9rem;
    color: var(--color-text-light);
    font-style: italic;
    margin-bottom: var(--spacing-sm);
}

.book-card .description {
    font-size: 0.9rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.book-price {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.book-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

/* ===== Filter Tabs ===== */
.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.filter-tab {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.filter-tab:hover,
.filter-tab.active {
    background-color: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-dark);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group input[type="date"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: var(--font-secondary);
    transition: border-color 0.3s ease;
}

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

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

.form-group .checkbox-group,
.form-group .radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-xs);
}

.form-group input[type="checkbox"],
.form-group input[type="radio"] {
    width: auto;
    margin-right: var(--spacing-xs);
}

.checkbox-label,
.radio-label {
    display: flex;
    align-items: center;
    font-weight: normal;
    cursor: pointer;
}

/* ===== Alert Messages ===== */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* ===== Cart ===== */
.cart-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.cart-item:last-child {
    border-bottom: none;
}

.cart-item-details {
    flex: 1;
}

.cart-item-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.cart-total {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--color-border);
    text-align: right;
}

.cart-total .total-amount {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-accent);
}

/* ===== Footer ===== */
.site-footer {
    background-color: var(--color-dark-bg);
    color: var(--color-text-on-dark);
    padding: var(--spacing-xxl) 0 var(--spacing-md);
    margin-top: var(--spacing-xxl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-section h3,
.footer-section h4 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.footer-logo {
    height: 60px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
    margin-bottom: var(--spacing-sm);
    opacity: 0.95;
    /* Removed filter to show logo in original colors - if you want white logo, uncomment: filter: brightness(0) invert(1); */
}

/* If logo doesn't exist, show text fallback */
.footer-section h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

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

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

.footer-section a {
    color: var(--color-light);
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--color-white);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.9rem;
    color: var(--color-light);
}

/* ===== Two Column Layout ===== */
.two-column {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

/* ===== Image Placeholders ===== */
.image-placeholder {
    background: linear-gradient(135deg, var(--color-light) 0%, rgba(212, 165, 116, 0.15) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    font-style: italic;
    min-height: 200px;
    border-radius: var(--border-radius);
    border: 2px dashed var(--color-border);
    position: relative;
    overflow: hidden;
}

.image-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(45deg, transparent, transparent 15px, rgba(139, 69, 19, 0.03) 15px, rgba(139, 69, 19, 0.03) 30px);
}

.image-placeholder-img {
    display: block;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.image-placeholder-img:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.placeholder-image {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.placeholder-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(45deg, transparent, transparent 20px, rgba(0,0,0,0.05) 20px, rgba(0,0,0,0.05) 40px);
}

.placeholder-image span {
    position: relative;
    z-index: 1;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    padding: var(--spacing-sm);
}

.placeholder-image:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* ===== Responsive Design ===== */
@media (min-width: 768px) {
    .header-content {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
    
    .logo {
        text-align: center;
        align-items: center;
    }
    
    .logo a {
        align-items: center;
    }
    
    .logo-image {
        height: 70px;
    }
    
    .logo-tagline {
        text-align: center;
    }
    
    .nav-toggle {
        display: none;
    }
    
    .nav-menu {
        display: flex;
        flex-direction: row;
        margin-top: 0;
        gap: var(--spacing-md);
    }
    
    .nav-menu li a {
        padding: var(--spacing-xs) var(--spacing-sm);
        white-space: nowrap;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
    
    .hero-buttons {
        flex-direction: row;
        justify-content: center;
    }
    
    /* Hero Fullscreen Responsive */
    .hero-content {
        grid-template-columns: 1.2fr 1fr;
        gap: var(--spacing-xxl);
        text-align: left;
    }
    
    .hero-text {
        text-align: left;
    }
    
    .hero-headline {
        font-size: 3.5rem;
        margin-left: 0;
        margin-right: 0;
    }
    
    .hero-subhead {
        margin-left: 0;
        margin-right: 0;
    }
    
    .hero-buttons {
        flex-direction: row;
        justify-content: flex-start;
    }
    
    .stack-cover {
        max-width: 400px;
    }
    
    /* Featured Books Strip */
    .featured-book-card {
        flex: 0 0 calc(50% - var(--spacing-md));
    }
    
    .books-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .book-actions {
        flex-direction: row;
    }
    
    .two-column {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-gee-content {
        grid-template-columns: 1.5fr 1fr;
        text-align: left;
    }
    
    .about-gee-text {
        text-align: left;
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .cart-item {
        flex-direction: row;
        align-items: center;
    }
}

@media (min-width: 1024px) {
    .books-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.75rem; }
    
    /* Hero Fullscreen Large */
    .hero-headline {
        font-size: 4.5rem;
    }
    
    .hero-subhead {
        font-size: 1.25rem;
    }
    
    /* Featured Books Strip Large */
    .featured-book-card {
        flex: 0 0 calc(33.333% - var(--spacing-md));
    }
    
    .featured-books-strip {
        padding: var(--spacing-lg) 0;
    }
    
    .teaser-headline {
        font-size: 3.5rem;
    }
}

/* ===== Utility Classes ===== */
.text-center {
    text-align: center;
}

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

.text-right {
    text-align: right;
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.hidden {
    display: none;
}