:root {
    /* Color Palette - Updated for WCAG 2.1 AA Contrast (4.5:1) */
    --primary: #D61A4C;
    /* Darkened Pink */
    --primary-hover: #B5123D;
    --secondary: #007DA3;
    /* Darkened Blue */
    --secondary-hover: #006685;
    --accent: #ecb210;
    /* Darkened Yellow for text-level contrast */
    --dark: #2A2A2A;
    --light: #F9F9F9;
    --white: #FFFFFF;
    --gray: #666666;
    /* Darkened from #888888 for better contrast */
    --gray-light: #E0E0E0;

    /* Typo */
    --font-heading: 'Fredoka', sans-serif;
    /* Soft, rounded, fun */
    --font-body: 'Outfit', sans-serif;
    /* Clean, modern */

    /* Spacing */
    --container-width: 1200px;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;

    /* Radii */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-pill: 50px;
}

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

body {
    font-family: var(--font-body);
    background-color: transparent;
    /* Changed from var(--light) so canvas BG is visible */
    color: var(--dark);
    line-height: 1.6;
}

h1,
h2,
h3,
h4,
.btn,
.nav-link {
    font-family: var(--font-heading);
}

img {
    max-width: 100%;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s;
}

/* Accessibility: Focus Indicators */
a:focus,
button:focus,
input:focus,
a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 3px solid var(--secondary) !important;
    outline-offset: 3px !important;
    border-radius: 4px;
}

/* Skip to Content Link */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: 1rem;
    z-index: 9999;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

ul {
    list-style: none;
}

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

/* Typography */
h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1rem;
    color: var(--dark);
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

p {
    margin-bottom: 1rem;
    color: #444;
    /* Darkened from #555 */
}

.highlight {
    color: var(--primary);
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 8px;
    background: var(--accent);
    opacity: 0.3;
    z-index: -1;
    border-radius: 4px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
    border: none;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(255, 51, 102, 0.3);
}

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

.btn-secondary {
    background-color: var(--white);
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.btn-amazon {
    background-color: #FF9900;
    color: var(--dark);
    width: 100%;
    text-align: center;
}

.btn-amazon:hover {
    background-color: #e68a00;
}

.btn-sm {
    padding: 0.5rem 1.2rem;
    font-size: 0.9rem;
}

/* Header */
.site-header {
    background: rgba(255, 255, 255, 0.9);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 0.8rem 0;
}

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

.logo {
    height: 50px;
    width: auto;
}

.main-nav ul {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.main-nav a.active {
    color: var(--primary);
    font-weight: 600;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

/* Hero */
.hero {
    padding: var(--spacing-lg) 0;
    overflow: hidden;
    background: linear-gradient(135deg, #FFDEE9 0%, #B5FFFC 100%);
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--spacing-lg);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

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

.floating-book {
    max-width: 400px;
    border-radius: var(--radius-sm);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
    transform: rotate(var(--rot, -5deg));
    transition: transform 0.5s ease-in-out, opacity 0.5s ease-in-out;
}

.floating-book.fade-out {
    opacity: 0;
}

.floating-book:hover {
    transform: rotate(0deg) scale(1.02);
}

/* Featured Books */
.featured-section {
    padding: 6rem 0;
}

.book-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.book-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
    position: relative;
    display: flex;
    flex-direction: column;
}

.book-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.book-badge {
    position: absolute;
    top: -10px;
    right: -10px;
    background: var(--accent);
    color: #000000;
    /* WCAG AAA Contrast against var(--accent) */
    font-weight: 700;
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-pill);
    font-size: 0.8rem;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.book-badge.badge-primary {
    background: var(--primary);
    color: var(--white);
    /* WCAG AA Contrast against var(--primary) */
}

.book-cover {
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.book-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.book-desc {
    flex-grow: 1;
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

/* Newsletter */
.newsletter-section {
    padding: 6rem 0 8rem;
    text-align: center;
}

.newsletter-box {
    background: var(--dark);
    color: var(--white);
    padding: 4rem 2rem;
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.newsletter-box::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: var(--primary);
    filter: blur(80px);
    top: -100px;
    left: -100px;
    opacity: 0.3;
    border-radius: 50%;
}

.newsletter-box::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: var(--secondary);
    filter: blur(80px);
    bottom: -100px;
    right: -100px;
    opacity: 0.3;
    border-radius: 50%;
}

.newsletter-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
}

.newsletter-content h2,
.newsletter-content p {
    color: var(--white);
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    justify-content: center;
}

.newsletter-form input {
    padding: 0.8rem 1.5rem;
    border-radius: var(--radius-pill);
    border: none;
    font-size: 1rem;
    flex-grow: 1;
    max-width: 300px;
}

.patreon-link {
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: var(--gray-light);
}

.link-patreon {
    color: var(--accent);
    font-weight: bold;
    margin-left: 0.5rem;
}

/* Footer */
.site-footer {
    padding: 2rem 0;
    background: var(--white);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.footer-logo img {
    height: 30px;
}

.footer-logo p {
    margin: 0;
    font-size: 0.9rem;
}

.footer-links a {
    margin-left: 2rem;
    font-size: 0.9rem;
    color: var(--gray);
}

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

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    /* Hidden on desktop */
}

/* Responsiveness */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .main-nav {
        display: none;
    }

    /* TODO: Implement JS Toggle */

    .mobile-menu-toggle {
        display: block;
        background: none;
        border: none;
        cursor: pointer;
    }

    .mobile-menu-toggle span {
        display: block;
        width: 25px;
        height: 3px;
        background: var(--dark);
        margin: 5px 0;
    }

    .newsletter-form {
        flex-direction: column;
        align-items: center;
    }

    .footer-inner {
        flex-direction: column;
        gap: 1rem;
    }

    .footer-links a {
        margin: 0 1rem;
    }

    /* Mobile Menu Active State */
    .main-nav.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        padding: 2rem;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        z-index: 99;
    }

    .main-nav.active ul {
        flex-direction: column;
        width: 100%;
    }

    /* Hamburger Animation */
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
    }

    .mobile-menu-toggle span {
        transition: transform 0.3s, opacity 0.3s;
    }
}

/* Cookie Consent Banner */
.cookie-banner {
    position: fixed;
    bottom: 30px;
    right: 30px;
    max-width: 380px;
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    display: none;
    /* Hidden by default */
    flex-direction: column;
    gap: 1.2rem;
    animation: slideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.cookie-banner.active {
    display: flex;
}

.cookie-header {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.cookie-icon {
    font-size: 1.5rem;
}

.cookie-banner h4 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--dark);
    margin: 0;
}

.cookie-banner p {
    font-size: 0.95rem;
    color: #555;
    margin: 0;
    line-height: 1.5;
}

.cookie-buttons {
    display: flex;
    gap: 1rem;
}

.cookie-buttons .btn {
    flex: 1;
    padding: 0.7rem 1rem;
    font-size: 1rem;
    text-align: center;
}

.btn-decline {
    background-color: var(--gray-light) !important;
    color: var(--dark) !important;
    box-shadow: none !important;
}

.btn-decline:hover {
    background-color: #d0d0d0 !important;
    transform: translateY(-2px);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@media (max-width: 480px) {
    .cookie-banner {
        bottom: 20px;
        right: 20px;
        left: 20px;
        max-width: none;
        padding: 1.5rem;
    }
}