/* supplychain.wiki - Watercolor Supply Chain Encyclopedia */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --washi-white: #FAF8F3;
    --clay-wash: #E8D8C0;
    --steel-wash: #C8D0D8;
    --ocean-wash: #C0D8E0;
    --sage-wash: #C8D8C8;
    --navy-anchor: #1A2744;
    --trade-copper: #B87333;
    --deep-ink: #1A1A1A;
    --soft-wash: #6A7A7A;
}
body {
    background: var(--washi-white);
    color: var(--deep-ink);
    font-family: 'Bitter', serif;
    font-size: 1rem;
    line-height: 1.8;
    font-weight: 400;
    overflow-x: hidden;
    overflow-y: hidden;
}

/* Horizontal Scroll */
.scroll-container {
    display: flex;
    width: 500vw;
    height: 100vh;
    transition: transform 0.5s ease;
}

/* Panels */
.panel {
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    flex-shrink: 0;
}
.panel-intro {
    background: var(--washi-white);
}
.panel-raw {
    background:
        radial-gradient(ellipse at 30% 50%, rgba(232,216,192,0.6) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 30%, rgba(232,216,192,0.4) 0%, transparent 50%),
        var(--washi-white);
}
.panel-mfg {
    background:
        radial-gradient(ellipse at 40% 60%, rgba(200,208,216,0.6) 0%, transparent 55%),
        radial-gradient(ellipse at 60% 20%, rgba(200,208,216,0.4) 0%, transparent 50%),
        var(--washi-white);
}
.panel-ship {
    background:
        radial-gradient(ellipse at 50% 40%, rgba(192,216,224,0.6) 0%, transparent 55%),
        radial-gradient(ellipse at 20% 70%, rgba(192,216,224,0.4) 0%, transparent 50%),
        var(--washi-white);
}
.panel-dist {
    background:
        radial-gradient(ellipse at 60% 50%, rgba(200,216,200,0.6) 0%, transparent 55%),
        radial-gradient(ellipse at 30% 80%, rgba(200,216,200,0.4) 0%, transparent 50%),
        var(--washi-white);
}
.panel-content {
    max-width: 700px;
    padding: 2rem;
}

/* Typography */
.hero-title {
    font-family: 'Bitter', serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--navy-anchor);
    text-align: center;
    border-bottom: 3px solid var(--trade-copper);
    padding-bottom: 0.5rem;
    display: inline-block;
}
.hero-subtitle {
    font-size: 1.1rem;
    color: var(--soft-wash);
    text-align: center;
    margin-top: 0.5rem;
}
.panel-title {
    font-family: 'Bitter', serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--navy-anchor);
    margin-bottom: 1.5rem;
}
.panel-body {
    font-size: 1rem;
    color: var(--deep-ink);
    margin-bottom: 1rem;
}

/* References */
.ref {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.65rem;
    color: var(--trade-copper);
    border: 1px solid var(--trade-copper);
    border-radius: 50%;
    padding: 0 3px;
    margin-left: 2px;
    cursor: default;
}

/* Chain Navigation */
.chain-nav {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.5rem;
    z-index: 10;
}
.chain-link {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.7rem;
    color: var(--soft-wash);
    padding: 0.3rem 0.75rem;
    border: 1px solid var(--soft-wash);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.chain-link.active {
    background: var(--navy-anchor);
    color: var(--washi-white);
    border-color: var(--navy-anchor);
}

/* Footer */
#footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    text-align: center;
    padding: 0.5rem;
    z-index: 5;
}
.footer-text {
    font-size: 0.75rem;
    color: var(--soft-wash);
}

/* Section animation */
.section {
    opacity: 0;
    transition: opacity 0.6s ease;
}
.section.visible {
    opacity: 1;
}