/* matchumnews.com — Frutiger-Aero Algorithmic Dashboard */

:root {
    --deep-navy: #0f172a;
    --navy: #1e293b;
    --sky-blue: #e0ecf8;
    --slate: #94a3b8;
    --amber: #f59e0b;
    --red: #ef4444;
    --purple: #8b5cf6;
    --green: #22c55e;
    --clean-white: #ffffff;
    --mid-navy: #334d6e;
    --bright-blue: #3b82f6;
    --soft-slate: #7895b0;
    --near-white: #f1f5f9;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--deep-navy);
    color: var(--clean-white);
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 400;
    font-size: clamp(0.95rem, 1.1vw, 1.08rem);
    line-height: 1.7;
    overflow-x: hidden;
}

/* ====================== PRISM HERO ====================== */
.prism-hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(to bottom, var(--deep-navy), #1e3a5f);
    padding: 40px 20px;
    position: relative;
    overflow: hidden;
}

.hero-title {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    color: var(--clean-white);
    letter-spacing: -0.01em;
    margin-bottom: 8px;
    text-align: center;
}

.hero-subtitle {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 400;
    font-size: clamp(0.9rem, 1.2vw, 1.1rem);
    color: var(--slate);
    margin-bottom: 50px;
    text-align: center;
}

.prism-container {
    position: relative;
    width: 200px;
    height: 250px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.prism {
    width: 160px;
    height: 200px;
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    background: conic-gradient(
        from 0deg,
        var(--red),
        var(--amber),
        var(--green),
        var(--purple),
        var(--sky-blue),
        var(--red)
    );
    border: 0.5px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 0 40px rgba(139, 92, 246, 0.3);
    animation: prism-appear 0.8s ease-out forwards;
    opacity: 0;
    transform: scale(0.8);
}

@keyframes prism-appear {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.beam-container {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: -2px;
}

.beam {
    width: 2px;
    height: 0;
    animation: beam-grow 1s ease-out forwards;
    animation-delay: 0.8s;
    border-radius: 0 0 1px 1px;
}

@keyframes beam-grow {
    to { height: 60px; }
}

.beam-1 { background: linear-gradient(to bottom, var(--red), transparent); }
.beam-2 { background: linear-gradient(to bottom, var(--amber), transparent); }
.beam-3 { background: linear-gradient(to bottom, var(--green), transparent); }
.beam-4 { background: linear-gradient(to bottom, var(--purple), transparent); }
.beam-5 { background: linear-gradient(to bottom, var(--sky-blue), transparent); }

.hero-labels {
    display: flex;
    gap: 24px;
    margin-top: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.beam-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    opacity: 0;
    animation: label-fade 0.6s ease forwards;
    animation-delay: 1.8s;
}

@keyframes label-fade {
    to { opacity: 0.7; }
}

.label-1 { color: var(--red); }
.label-2 { color: var(--amber); }
.label-3 { color: var(--green); }
.label-4 { color: var(--purple); }
.label-5 { color: var(--sky-blue); }

/* ====================== GLASS CARD ====================== */
.glass-card {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid rgba(148, 163, 184, 0.15);
    border-radius: 12px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

/* ====================== ALGORITHM SECTION ====================== */
.algo-section {
    padding: 100px 20px;
    background: var(--deep-navy);
}

.section-inner {
    max-width: 1000px;
    margin: 0 auto;
}

.section-title {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    color: var(--clean-white);
    text-align: center;
    letter-spacing: -0.01em;
    margin-bottom: 12px;
}

.section-desc {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 400;
    font-size: 0.95rem;
    color: var(--slate);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 50px;
    line-height: 1.7;
}

.algo-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.algo-card {
    padding: 30px 24px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.3s ease;
}

.algo-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.algo-icon {
    margin-bottom: 16px;
}

.algo-title {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--clean-white);
    margin-bottom: 8px;
}

.algo-desc {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 400;
    font-size: 0.88rem;
    color: var(--slate);
    line-height: 1.7;
}

/* ====================== FEED SECTION ====================== */
.feed-section {
    padding: 100px 20px;
    background: linear-gradient(to bottom, var(--deep-navy), var(--navy));
}

.feed-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.feed-card {
    padding: 24px 20px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.3s ease;
}

.feed-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feed-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem;
    letter-spacing: 0.1em;
    padding: 2px 8px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 10px;
}

.tag-politics {
    background: rgba(239, 68, 68, 0.15);
    color: var(--red);
}

.tag-tech {
    background: rgba(139, 92, 246, 0.15);
    color: var(--purple);
}

.tag-science {
    background: rgba(34, 197, 94, 0.15);
    color: var(--green);
}

.tag-culture {
    background: rgba(245, 158, 11, 0.15);
    color: var(--amber);
}

.feed-headline {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    color: var(--clean-white);
    line-height: 1.4;
    margin-bottom: 8px;
}

.feed-excerpt {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 400;
    font-size: 0.85rem;
    color: var(--slate);
    line-height: 1.6;
    margin-bottom: 14px;
}

.feed-meta {
    display: flex;
    justify-content: space-between;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
}

.feed-score {
    color: var(--green);
}

.feed-time {
    color: var(--slate);
}

/* ====================== FOOTER ====================== */
.site-footer {
    background: var(--navy);
    border-top: 1px solid rgba(148, 163, 184, 0.1);
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 40px 20px;
}

.footer-brand {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--clean-white);
}

.footer-kr {
    font-size: 0.85rem;
    color: var(--slate);
}

.footer-tagline {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--slate);
    letter-spacing: 0.06em;
    margin-top: 8px;
}

/* ====================== RESPONSIVE ====================== */
@media (max-width: 600px) {
    .prism {
        width: 120px;
        height: 150px;
    }

    .hero-labels {
        gap: 14px;
    }

    .algo-cards {
        grid-template-columns: 1fr;
    }

    .feed-grid {
        grid-template-columns: 1fr;
    }
}