@font-face {
    font-family: "Days One";
    src: url("./fonts/DaysOne-Regular.ttf") format("truetype");
    font-display: swap;
}

:root {
    --bg: #0b0c0a;
    --surface: #131511;
    --surface-2: #1a1d17;
    --border: rgba(255, 255, 255, 0.08);
    --text: #f2f3ee;
    --muted: #9a9d92;
    --accent: #dad726;
    --accent-ink: #14140a;
    --radius: 22px;
    --header-h: 68px;
    --maxw: 1180px;
    --font-display: "Space Grotesk", "Days One", system-ui, sans-serif;
    --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    color-scheme: dark;
}

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

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }

html, body { overflow-x: clip; }
body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
strong { color: var(--text); font-weight: 600; }

h1, h2, h3 { font-family: var(--font-display); line-height: 1.1; letter-spacing: -0.02em; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

/* ---------- Header ---------- */
.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    height: var(--header-h);
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 max(24px, calc((100vw - var(--maxw)) / 2));
    background: rgba(11, 12, 10, 0.65);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    border-bottom: 1px solid var(--border);
}
.brand img { height: 22px; width: auto; }

.nav { display: flex; align-items: center; gap: 6px; }
.nav a:not(.btn) {
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 0.92rem;
    color: var(--muted);
    transition: color .2s, background .2s;
}
.nav a:not(.btn):hover { color: var(--text); background: rgba(255,255,255,.06); }
.nav .btn { margin-left: 10px; }

.menu-toggle { display: none; background: none; border: 0; width: 44px; height: 44px; cursor: pointer; position: relative; }
.menu-toggle span {
    position: absolute; left: 11px; right: 11px; height: 2px; background: var(--text); border-radius: 2px;
    transition: transform .25s, top .25s;
}
.menu-toggle span:first-child { top: 17px; }
.menu-toggle span:last-child { top: 25px; }
.menu-toggle.active span:first-child { top: 21px; transform: rotate(45deg); }
.menu-toggle.active span:last-child { top: 21px; transform: rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 14px 26px;
    background: var(--accent);
    color: var(--accent-ink);
    font-weight: 600; font-size: 0.98rem;
    border-radius: 999px;
    border: 1px solid transparent;
    transition: transform .2s, box-shadow .2s, background .2s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 30px -8px rgba(218, 215, 38, .55); }
.btn-sm { padding: 9px 18px; font-size: 0.9rem; }
.btn-ghost { background: transparent; color: var(--text); border-color: rgba(255,255,255,.18); }
.btn-ghost:hover { background: rgba(255,255,255,.06); box-shadow: none; }

/* ---------- Shared ---------- */
.eyebrow {
    display: inline-flex; align-items: center; gap: 10px;
    font-size: 0.8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted);
    font-weight: 500;
}
.eyebrow i { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.accent { color: var(--accent); }

.section { max-width: var(--maxw); margin: 0 auto; padding: 110px 24px 0; }
.section-head { margin-bottom: 48px; }
.section-head h2 { font-size: clamp(2rem, 4.5vw, 3.2rem); margin-top: 16px; }

/* ---------- Hero ---------- */
.hero {
    position: relative;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: calc(var(--header-h) + 70px) 24px 20px;
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 56px;
    align-items: center;
    min-height: 100vh;
    min-height: 100svh;
}
.hero-glow {
    position: absolute; z-index: -1; right: 0; top: 10%; width: 620px; height: 620px;
    background: radial-gradient(circle, rgba(218,215,38,.20), transparent 65%);
    filter: blur(20px);
    pointer-events: none;
}
.hero h1 { font-size: clamp(2.6rem, 6.2vw, 5rem); margin: 22px 0 22px; letter-spacing: -0.035em; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.25rem); color: var(--muted); max-width: 520px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }

.hero-visual {
    position: relative;
    border-radius: 28px;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 40px 80px -30px rgba(0,0,0,.8), 0 0 0 1px rgba(218,215,38,.05);
    aspect-ratio: 4 / 3.4;
    transform: rotate(1.5deg);
    transition: transform .5s;
}
.hero-visual:hover { transform: rotate(0deg) scale(1.01); }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; }
.hero-visual::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(11,12,10,.65), transparent 45%);
}
.hero-visual figcaption {
    position: absolute; left: 18px; bottom: 16px; z-index: 2;
    display: inline-flex; align-items: center; gap: 10px;
    padding: 8px 14px; font-size: .82rem; border-radius: 999px;
    background: rgba(11,12,10,.6); backdrop-filter: blur(10px);
    border: 1px solid var(--border);
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: #5dff7a; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(93,255,122,.6); } 50% { box-shadow: 0 0 0 6px rgba(93,255,122,0); } }

/* ---------- Stats ---------- */
.stats {
    max-width: var(--maxw);
    margin: 40px auto 0;
    padding: 0 24px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
}
.stats > div {
    display: flex; flex-direction: column; gap: 4px; padding: 28px 24px;
    background: var(--surface); border: 1px solid var(--border);
}
.stats > div:first-child { border-radius: var(--radius) 0 0 var(--radius); }
.stats > div:last-child { border-radius: 0 var(--radius) var(--radius) 0; }
.stats strong { font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3rem); color: var(--accent); line-height: 1; }
.stats span { color: var(--muted); font-size: .92rem; }

/* ---------- Bento cards ---------- */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.card {
    position: relative; overflow: hidden;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    display: flex; flex-direction: column;
    transition: border-color .3s, transform .3s;
}
.card:hover { border-color: rgba(218,215,38,.35); transform: translateY(-4px); }
.card h3 { font-size: clamp(1.4rem, 2.2vw, 1.8rem); margin-bottom: 12px; }
.card p { color: var(--muted); }
.card-body { padding: 28px; }
.tag {
    display: inline-block; align-self: flex-start; margin-bottom: 14px; padding: 4px 12px;
    font-size: .75rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
    color: var(--accent); background: rgba(218,215,38,.1); border: 1px solid rgba(218,215,38,.25);
    border-radius: 999px;
}

.card-vision {
    grid-column: span 6; padding: 48px;
    background:
        radial-gradient(600px 220px at 100% 0%, rgba(218,215,38,.14), transparent 70%),
        var(--surface);
}
.card-vision h3 { font-size: clamp(1.8rem, 4vw, 3rem); max-width: 18ch; }
.card-vision p { font-size: 1.15rem; max-width: 52ch; }

.card-head, .card-body-part { grid-column: span 3; }
.card-head img, .card-body-part img { width: 100%; aspect-ratio: 16 / 11; object-fit: cover; }
.card-head img { object-position: center 40%; filter: saturate(.9); }
.card-body-part img { object-position: center 40%; }

.card-legs { grid-column: span 6; flex-direction: row; align-items: stretch; }
.card-legs .viewer-wrap { position: relative; flex: 1.3; min-height: 380px; background: radial-gradient(circle at 50% 40%, #23261d, var(--surface)); }
.card-legs model-viewer { width: 100%; height: 100%; min-height: 380px; --poster-color: transparent; }
.viewer-hint {
    position: absolute; left: 16px; bottom: 14px; font-size: .78rem; color: var(--muted);
    padding: 6px 12px; border-radius: 999px; background: rgba(11,12,10,.6); border: 1px solid var(--border);
    pointer-events: none;
}
.card-legs .card-body { flex: 1; display: flex; flex-direction: column; justify-content: center; padding: 48px; }

/* ---------- Events ---------- */
.events { list-style: none; border-top: 1px solid var(--border); }
.events li {
    display: flex; align-items: center; gap: 28px;
    padding: 28px 8px; border-bottom: 1px solid var(--border);
    transition: padding .3s, background .3s;
}
.events li:hover { padding-left: 24px; background: linear-gradient(90deg, rgba(218,215,38,.06), transparent); }
.events .num { font-family: var(--font-display); font-size: 1rem; color: var(--accent); min-width: 2ch; }
.events h3 { font-size: clamp(1.3rem, 2.6vw, 2rem); }
.events p { color: var(--muted); margin-top: 6px; }
.events a { text-decoration: underline; text-decoration-color: rgba(218,215,38,.5); text-underline-offset: 3px; }
.events a:hover { color: var(--accent); }

/* ---------- Team ---------- */
.team { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.member {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 14px 14px 22px; display: flex; flex-direction: column; gap: 18px;
    transition: border-color .3s, transform .3s;
}
.member:hover { border-color: rgba(218,215,38,.35); transform: translateY(-4px); }
.member img, .avatar { width: 100%; aspect-ratio: 1; border-radius: 14px; object-fit: cover; }
.member img { filter: grayscale(.25) contrast(1.02); transition: filter .3s; }
.member:hover img { filter: none; }
.avatar {
    display: grid; place-items: center;
    font-family: var(--font-display); font-size: 2.6rem; color: var(--accent);
    background: repeating-linear-gradient(135deg, var(--surface-2) 0 12px, #161812 12px 24px);
    border: 1px dashed rgba(255,255,255,.1);
}
.member > div:last-child { padding: 0 8px; }
.member h3 { font-size: 1.2rem; margin-bottom: 4px; }
.school { color: var(--muted); font-size: .9rem; }
.role {
    display: inline-block; margin-bottom: 6px; font-size: .75rem; font-weight: 600;
    letter-spacing: .06em; text-transform: uppercase; color: var(--accent-ink);
    background: var(--accent); padding: 2px 10px; border-radius: 999px;
}
.lead-member { border-color: rgba(218,215,38,.3); }

/* ---------- Contact ---------- */
.contact {
    display: grid; grid-template-columns: 1.6fr 1fr; gap: 32px;
    background:
        radial-gradient(700px 300px at 0% 100%, rgba(218,215,38,.16), transparent 70%),
        var(--surface);
    border: 1px solid var(--border); border-radius: 32px; padding: clamp(28px, 5vw, 64px);
}
.contact h2 { font-size: clamp(1.8rem, 3.8vw, 2.8rem); margin: 16px 0 28px; max-width: 20ch; }
.mail {
    display: inline-block; font-family: var(--font-display); font-size: clamp(1.1rem, 2.6vw, 1.7rem);
    color: var(--accent); border-bottom: 2px solid rgba(218,215,38,.35); padding-bottom: 4px;
    transition: border-color .2s;
    word-break: break-word;
}
.mail:hover { border-color: var(--accent); }
.mail span { display: inline-block; transition: transform .2s; }
.mail:hover span { transform: translateX(6px); }
.address { display: flex; align-items: center; gap: 10px; margin-top: 24px; color: var(--muted); }
.address svg { color: var(--accent); flex-shrink: 0; }
.sponsor {
    align-self: end; justify-self: end; width: 100%; max-width: 280px;
    display: flex; flex-direction: column; gap: 14px; padding: 22px;
    background: #fff; border-radius: 18px; color: #555; font-size: .75rem;
    letter-spacing: .1em; text-transform: uppercase; font-weight: 600;
    transition: transform .2s;
}
.sponsor:hover { transform: translateY(-3px); }
.sponsor img { max-height: 64px; width: auto; object-fit: contain; align-self: flex-start; }

/* ---------- Footer ---------- */
.site-footer {
    max-width: var(--maxw); margin: 110px auto 0; padding: 40px 24px 48px;
    border-top: 1px solid var(--border);
    display: grid; grid-template-columns: 1fr auto 1fr; gap: 24px; align-items: center;
    font-size: .9rem; color: var(--muted);
}
.footer-brand { display: flex; flex-direction: column; gap: 8px; }
.footer-brand img { height: 20px; width: auto; align-self: flex-start; }
.site-footer nav { display: flex; gap: 22px; flex-wrap: wrap; justify-content: center; }
.site-footer a:hover { color: var(--accent); }
.footer-links { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }

/* ---------- Reveal on scroll ---------- */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.in { opacity: 1; transform: none; }
.js .card.reveal.in:hover { transform: translateY(-4px); }
.js .member.reveal.in:hover { transform: translateY(-4px); }

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .js .reveal { opacity: 1; transform: none; transition: none; }
    .dot { animation: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
    .team { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
    .hero { grid-template-columns: 1fr; min-height: auto; gap: 40px; padding-top: calc(var(--header-h) + 40px); }
    .hero-visual { transform: none; }
    .card-head, .card-body-part { grid-column: span 6; }
    .card-legs { flex-direction: column; }
    .card-legs .card-body { padding: 28px; }
    .card-vision { padding: 32px 28px; }
    .contact { grid-template-columns: 1fr; }
    .sponsor { justify-self: start; }
    .site-footer { grid-template-columns: 1fr; }
    .site-footer nav, .footer-links { justify-content: flex-start; align-items: flex-start; }
}

@media (max-width: 768px) {
    .menu-toggle { display: block; }
    .nav {
        position: fixed; top: var(--header-h); left: 0; right: 0;
        flex-direction: column; align-items: stretch; gap: 4px; padding: 16px 24px 24px;
        background: rgba(11,12,10,.96); backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border);
        transform: translateY(-12px); opacity: 0; pointer-events: none;
        transition: opacity .25s, transform .25s;
    }
    .nav.active { transform: none; opacity: 1; pointer-events: auto; }
    .nav a:not(.btn) { padding: 14px 8px; font-size: 1.05rem; border-bottom: 1px solid var(--border); border-radius: 0; }
    .nav .btn { margin: 14px 0 0; padding: 14px; }
    .section { padding-top: 80px; }
    .stats { grid-template-columns: 1fr; gap: 0; }
    .stats > div { flex-direction: row; align-items: baseline; gap: 16px; padding: 20px 24px; }
    .stats > div:first-child { border-radius: var(--radius) var(--radius) 0 0; }
    .stats > div:last-child { border-radius: 0 0 var(--radius) var(--radius); }
    .events li { gap: 16px; }
    .team { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .lead-member { grid-column: span 2; }
    .lead-member img { aspect-ratio: 16 / 10; object-position: center 30%; }
}

/* ---------- Dynamic team ---------- */
.team-status { grid-column: 1 / -1; color: var(--muted); }


/* ---------- Bývalí členové (alumni) ---------- */
.alumni { display: flex; flex-direction: column; align-items: center; margin-top: 28px; }
.alumni[hidden] { display: none; }
.alumni-toggle {
    display: inline-flex; flex-direction: column; align-items: center; gap: 4px;
    background: none; border: 0; color: var(--muted); cursor: pointer; font: inherit;
    padding: 8px 16px; border-radius: 14px; transition: color .2s;
}
.alumni-label { font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; }
.alumni-toggle svg { transition: transform .35s, color .2s; animation: nudge 2.4s ease-in-out infinite; }
.alumni-toggle:hover { color: var(--accent); }
.alumni-toggle[aria-expanded="true"] svg { transform: rotate(180deg); animation: none; }
@keyframes nudge { 0%,100% { translate: 0 0; } 50% { translate: 0 4px; } }

.alumni-panel {
    width: 100%; display: grid; grid-template-rows: 0fr; opacity: 0; visibility: hidden;
    transition: grid-template-rows .5s ease, opacity .4s ease, visibility 0s .5s;
}
.alumni-panel.open { grid-template-rows: 1fr; opacity: 1; visibility: visible; transition-delay: 0s; }
.alumni-inner { overflow: hidden; min-height: 0; }
.alumni-inner h3 { font-size: 1.5rem; text-align: center; margin: 28px 0 6px; color: var(--accent); }
.alumni-sub { text-align: center; color: var(--muted); margin-bottom: 28px; }
.team-alumni { grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); padding-bottom: 8px; }
.team-alumni .member { padding: 10px 10px 16px; gap: 12px; }
.team-alumni .member img { filter: grayscale(.8); }
.team-alumni .member:hover img { filter: none; }
.team-alumni .avatar { font-size: 1.8rem; }
.team-alumni .member h3 { font-size: 1rem; }
.team-alumni .lead-member { grid-column: auto; }
.team-alumni .lead-member img { aspect-ratio: 1; }

@media (prefers-reduced-motion: reduce) {
    .alumni-toggle svg { animation: none; }
    .alumni-panel { transition: none; }
}