:root {
    /* Color Palette */
    --color-black: #0a0a0a;
    --color-green: #1a332a;
    --color-green-light: #2c4a3e;
    --color-white: #f5f5f5;
    --color-gold: #c5a059;
    /* Accent gold for subtle luxury feel */
    --color-text-dark: #111;
    --color-text-light: #eee;

    /* Typography */
    --font-heading: 'Cinzel', serif;
    --font-subheading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
}

html {
    scroll-behavior: smooth;
}

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

body {
    background-color: var(--color-black);
    color: var(--color-white);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3 {
    font-family: var(--font-heading);
    font-weight: 400;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

/* Navigation */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background-color: rgba(10, 10, 10, 0.8);
    /* Slight transparency */
    backdrop-filter: blur(10px);
    /* Glassmorphism */
    position: fixed;
    /* Fixed header for access */
    width: 100%;
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s ease;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-family: var(--font-heading);
    font-size: 1.2rem;
    letter-spacing: 2px;
}

.logo img {
    height: 45px;
    /* Slightly larger */
    transition: transform 0.5s ease;
}

.logo:hover img {
    transform: rotate(5deg) scale(1.05);
}

.nav-links {
    display: flex;
    gap: 3rem;
    list-style: none;
}

.nav-links a {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.7;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -5px;
    left: 0;
    background-color: var(--color-gold);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    opacity: 1;
    color: var(--color-gold);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    background: radial-gradient(circle at center, #1a332a 0%, #0a0a0a 90%);
    overflow: hidden;
}

/* Subtle pulse animation for background */
.hero::before {
    content: '';
    position: absolute;
    width: 150%;
    height: 150%;
    background: radial-gradient(circle, rgba(26, 51, 42, 0.4) 0%, rgba(0, 0, 0, 0) 70%);
    animation: pulseGlow 8s infinite alternate;
}

@keyframes pulseGlow {
    0% {
        transform: scale(1);
        opacity: 0.5;
    }

    100% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

.hero-content {
    z-index: 2;
    max-width: 800px;
    padding: 0 2rem;
    transform: translateY(0);
    transition: transform 0.1s ease-out;
    /* For parallax hint */
}

.hero h1 {
    font-size: 4.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    letter-spacing: 0.2rem;
    text-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.hero p {
    font-size: 1.3rem;
    font-family: var(--font-subheading);
    font-style: italic;
    opacity: 0.9;
    margin-bottom: 3rem;
    font-weight: 300;
}

.cta-button {
    display: inline-block;
    padding: 1.2rem 3.5rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 3px;
    font-size: 0.8rem;
    background: linear-gradient(45deg, transparent 50%, var(--color-white) 50%);
    background-size: 250%;
    transition: all 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.cta-button:hover {
    background-position: 100%;
    color: var(--color-black);
    border-color: var(--color-white);
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

/* Product Section */
.product-section {
    background-color: var(--color-white);
    color: var(--color-text-dark);
    padding: var(--spacing-xl) 5%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    /* Helps with clean edges */
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.product-image-container {
    position: relative;
    height: 600px;
    background: radial-gradient(circle at center, #f5f5f5, #e0e0e0);
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    border-radius: 2px;
    /* Slight softening */
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    transition: transform 0.5s ease;
}

.product-image-container:hover {
    transform: translateY(-5px);
}

.image-wrapper img {
    max-width: 85%;
    max-height: 85%;
    object-fit: contain;
    transition: transform 0.8s cubic-bezier(0.2, 1, 0.3, 1), opacity 0.5s ease;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.2));
}

.image-wrapper img:hover {
    transform: scale(1.08) rotate(1deg);
}

/* Book Spine Customization Overlays REMOVED */

.product-details .eyebrow {
    display: block;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 4px;
    color: var(--color-green);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.product-details h2 {
    font-size: 3.5rem;
    margin-bottom: 2rem;
    color: var(--color-black);
    line-height: 1.1;
}

.product-details .description {
    font-size: 1.15rem;
    color: #444;
    margin-bottom: 3.5rem;
    max-width: 480px;
    line-height: 1.8;
}

.color-selection h3 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1.5rem;
    font-family: var(--font-body);
    font-weight: 600;
}

.color-options {
    display: flex;
    gap: 1.2rem;
    margin-bottom: 0.8rem;
}

.color-btn {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 1.5, 0.5, 1);
    position: relative;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.color-btn:hover {
    transform: scale(1.15);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

.color-btn.active::after {
    content: '';
    position: absolute;
    top: -6px;
    left: -6px;
    right: -6px;
    bottom: -6px;
    border-radius: 50%;
    border: 1px solid var(--color-black);
    animation: spinSelection 10s linear infinite;
    /* Subtle rotation if border was dashed, here just static */
    opacity: 0.6;
}

#selected-color-name {
    font-size: 0.95rem;
    margin-top: 0.8rem;
    color: #666;
    font-family: var(--font-subheading);
    font-style: italic;
    min-height: 1.5em;
    /* Prevent layout shift */
}

.price-action {
    display: flex;
    align-items: center;
    gap: 4rem;
    margin-top: 3.5rem;
    border-top: 1px solid #ddd;
    padding-top: 2.5rem;
}

.price {
    font-size: 2.2rem;
    font-family: var(--font-heading);
    color: var(--color-black);
}

.add-to-cart {
    background-color: var(--color-black);
    color: var(--color-white);
    border: none;
    padding: 1.2rem 3.5rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.add-to-cart:hover {
    background-color: var(--color-green);
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(26, 51, 42, 0.3);
}

/* Story Section */
.story-section {
    padding: var(--spacing-xl) 5%;
    background-color: var(--color-black);
    color: var(--color-white);
}

.story-block {
    display: flex;
    align-items: center;
    gap: 6rem;
    margin-bottom: 8rem;
}

.story-block.reverse {
    flex-direction: row-reverse;
}

.story-text {
    flex: 1;
    max-width: 500px;
}

.story-text .eyebrow {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-gold);
    margin-bottom: 1rem;
}

.story-text h3 {
    font-size: 2.8rem;
    margin-bottom: 2rem;
    line-height: 1.2;
}

.story-text p {
    font-size: 1.1rem;
    opacity: 0.8;
    margin-bottom: 1.5rem;
    font-weight: 300;
    text-align: justify;
}

.story-image {
    flex: 1;
    height: 500px;
    border-radius: 4px;
    overflow: hidden;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Specific Visual Placeholders - Gradients for now (Deprecated) */
/* .origin-visual, .philosophy-visual, .evolution-visual styles removed or kept for fallbacks */

.story-visual-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.6s ease;
}

.story-visual-img:hover {
    transform: scale(1.05);
}

/* Identity / Logo Section */
.identity-section {
    padding: 6rem 5%;
    background-color: #050505;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.identity-content {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.footer-logo-showcase {
    height: 80px;
    width: auto;
    max-width: 200px;
    opacity: 0.8;
    /* Removed invert filter if user has their own logo */
}

.identity-content p {
    font-family: var(--font-subheading);
    font-size: 1.2rem;
    font-style: italic;
    color: #888;
}

@media (max-width: 900px) {

    .story-block,
    .story-block.reverse {
        flex-direction: column;
        gap: 3rem;
        margin-bottom: 5rem;
    }

    .story-image {
        width: 100%;
        height: 300px;
    }
}

footer {
    background-color: #050505;
    padding: 6rem 5%;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3rem;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.contact-links h3 {
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1rem;
    color: var(--color-gold);
}

.contact-link {
    font-size: 1.1rem;
    opacity: 0.8;
    transition: all 0.3s ease;
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.contact-link span {
    color: #666;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-link:hover {
    opacity: 1;
    color: var(--color-gold);
    transform: translateY(-2px);
}

.footer-bottom p {
    font-size: 0.8rem;
    opacity: 0.4;
    letter-spacing: 1px;
    margin-top: 2rem;
}

/* Animations */
.fade-in {
    opacity: 0;
    animation: fadeInUp 1s forwards;
}

.fade-in-delay {
    opacity: 0;
    animation: fadeInUp 1s 0.3s forwards;
}

.fade-in-delay-2 {
    opacity: 0;
    animation: fadeInUp 1s 0.6s forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

/* Responsive */
@media (max-width: 900px) {
    .product-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .feature-row {
        flex-direction: column-reverse;
        gap: 3rem;
    }

    .hero h1 {
        font-size: 3rem;
    }

    .navbar {
        padding: 1rem 5%;
    }

    .price-action {
        flex-direction: column;
        gap: 1.5rem;
        align-items: flex-start;
    }

    /* Integrated Interactive Story */
    .interactive-container {
        position: relative;
        overflow: hidden;
        border-radius: 4px;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        background-color: #000;
    }

    .black-backdrop-story {
        background-color: #050505;
        width: 100%;
        height: 100%;
        position: relative;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Interactive Lamp (Hover Effect) */
    .interactive-lamp {
        width: 100%;
        height: 100%;
        object-fit: contain;
        transition: all 0.6s cubic-bezier(0.25, 1, 0.5, 1);
        filter: brightness(0.4) grayscale(0.6);
        /* Default: dimmed/off */
        cursor: pointer;
    }

    .interactive-lamp:hover {
        filter: brightness(1.1) grayscale(0);
        /* Hover: lit/on */
    }

    /* 2. CTA Overlay */
    .reveal-cta {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: opacity 0.8s ease;
        z-index: 10;
    }

    /* Origin Section Media Split */
    .origin-media-container {
        display: flex;
        gap: 1rem;
        height: 100%;
        width: 100%;
    }

    .origin-split-item {
        flex: 1;
        height: 100%;
        width: 100%;
        object-fit: cover;
        border-radius: 4px;
    }

    /* Specific tweak for the lamp image in split view to keep contains */
    img.origin-split-item {
        object-fit: contain;
    }

    .reveal-cta h4 {
        color: var(--color-white);
        font-family: var(--font-heading);
        font-size: 1.2rem;
        text-align: center;
        margin-bottom: 2rem;
        letter-spacing: 3px;
        line-height: 1.6;
        text-transform: uppercase;
        text-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
    }

    .power-btn {
        width: 60px;
        height: 60px;
        border-radius: 50%;
        border: 1px solid rgba(255, 255, 255, 0.3);
        background: transparent;
        color: var(--color-gold);
        font-size: 1.5rem;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
    }

    .power-btn:hover {
        border-color: var(--color-gold);
        box-shadow: 0 0 30px rgba(197, 160, 89, 0.3);
        transform: scale(1.1);
    }

    /* 3. Text Reveal Logic (Left Side) */
    #story-text-origin {
        opacity: 0.05;
        /* Barely visible in 'darkness' */
        filter: blur(3px);
        transform: translateY(10px);
        transition: all 2s ease;
    }

    #story-text-origin.illuminated {
        opacity: 1;
        filter: blur(0);
        transform: translateY(0);
    }


    @media (max-width: 900px) {
        .reveal-grid {
            grid-template-columns: 1fr;
            text-align: center;
        }

        .red-backdrop {
            width: 100%;
            max-width: 350px;
        }
    }