/* prototype.st - Mid-Century Modern Industrial Design */

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

:root {
    --walnut-dark: #3A2A1A;
    --walnut-mid: #2A1F14;
    --sand-warm: #C8B89A;
    --sand-light: #D4C8B8;
    --terracotta: #C4654A;
    --sage-green: #7A8B6A;
    --stone-gray: #7A6E5A;
    --cream-white: #FAFAF5;
}

body {
    background-color: var(--cream-white);
    color: var(--walnut-mid);
    font-family: 'Source Serif 4', Georgia, serif;
    font-size: 1.05rem;
    line-height: 1.8;
    overflow: hidden;
    height: 100vh;
}

/* Split Layout */
#split-layout {
    display: flex;
    height: 100vh;
    position: relative;
}

/* Showcase Zone */
#showcase-zone {
    width: 55%;
    height: 100vh;
    position: relative;
    overflow: hidden;
}

.showcase-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.showcase-slide.active {
    opacity: 1;
}

/* Material Textures */
.material-walnut {
    background:
        repeating-linear-gradient(
            25deg,
            rgba(58, 42, 26, 0.03) 0px,
            rgba(58, 42, 26, 0.06) 2px,
            transparent 2px,
            transparent 8px
        ),
        linear-gradient(180deg, #4A3828, #3A2A1A);
}

.material-aluminum {
    background:
        repeating-linear-gradient(
            0deg,
            rgba(255, 255, 255, 0.03) 0px,
            rgba(255, 255, 255, 0.01) 1px,
            transparent 1px,
            transparent 4px
        ),
        linear-gradient(135deg, #8A8A8A, #6A6A6A, #8A8A8A);
}

.material-clay {
    background:
        linear-gradient(180deg, #C4654A, #B85A42);
}

/* Showcase Content */
.showcase-content {
    text-align: center;
    z-index: 2;
}

.showcase-title {
    font-family: 'Libre Franklin', sans-serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--cream-white);
    text-transform: uppercase;
}

.showcase-label {
    font-family: 'Libre Franklin', sans-serif;
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--sand-warm);
    letter-spacing: 0.1em;
}

.showcase-heading {
    font-family: 'Libre Franklin', sans-serif;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--cream-white);
    text-transform: uppercase;
}

/* Object Cards */
.showcase-object {
    margin-top: 3rem;
    z-index: 2;
}

.object-card {
    width: 120px;
    height: 120px;
    background: rgba(250, 250, 245, 0.1);
    border: 1px solid rgba(250, 250, 245, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 16px 16px 48px rgba(42, 26, 20, 0.15);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.object-card:hover {
    transform: scale(1.05);
    box-shadow: 20px 20px 60px rgba(42, 26, 20, 0.2);
}

.object-circle {
    border-radius: 50%;
}

.object-arch {
    border-radius: 60px 60px 0 0;
}

.object-number {
    font-family: 'Libre Franklin', sans-serif;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--cream-white);
    opacity: 0.6;
}

/* Split Divider */
#split-divider {
    width: 1px;
    background-color: rgba(200, 184, 154, 0.25);
    z-index: 10;
}

/* Content Zone */
#content-zone {
    width: 45%;
    height: 100vh;
    overflow-y: auto;
    padding: 0;
    background-color: var(--cream-white);
}

.content-section {
    padding: 4rem 3rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border-bottom: 1px solid rgba(200, 184, 154, 0.2);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.content-section.visible {
    opacity: 1;
    transform: translateY(0);
}

.section-date {
    font-family: 'Libre Franklin', sans-serif;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--terracotta);
    margin-bottom: 1rem;
}

.section-title {
    font-family: 'Libre Franklin', sans-serif;
    font-size: clamp(1.5rem, 2.5vw, 2.2rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--walnut-mid);
    margin-bottom: 1.5rem;
}

.section-body {
    font-family: 'Source Serif 4', Georgia, serif;
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--stone-gray);
    margin-bottom: 2rem;
    max-width: 480px;
}

.section-meta {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.meta-label {
    font-family: 'Libre Franklin', sans-serif;
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--sage-green);
}

.meta-value {
    font-family: 'Source Serif 4', Georgia, serif;
    font-size: 0.95rem;
    color: var(--walnut-mid);
}

/* Scrollbar */
#content-zone::-webkit-scrollbar {
    width: 4px;
}

#content-zone::-webkit-scrollbar-track {
    background: transparent;
}

#content-zone::-webkit-scrollbar-thumb {
    background: var(--sand-warm);
    border-radius: 2px;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        overflow: auto;
        height: auto;
    }

    #split-layout {
        flex-direction: column;
        height: auto;
    }

    #showcase-zone {
        width: 100%;
        height: 60vh;
    }

    #split-divider {
        width: 100%;
        height: 1px;
    }

    #content-zone {
        width: 100%;
        height: auto;
        overflow: visible;
    }

    .content-section {
        min-height: auto;
        padding: 3rem 1.5rem;
    }
}