/* R4C — Run for Charity · public site styles. Prefix: r4c- */

:root {
    --r4c-bg: #0a0a0d;
    --r4c-bg-alt: #111114;
    --r4c-surface: #17171c;
    --r4c-border: rgba(255,255,255,0.08);
    --r4c-text: #f2f0ee;
    --r4c-text-dim: #a8a5a2;
    --r4c-accent: #ff4d1c;
    --r4c-accent-2: #ffb020;
    --r4c-accent-grad: linear-gradient(135deg, #ff4d1c 0%, #ffb020 100%);
}

* { box-sizing: border-box; }

.r4c-body {
    margin: 0;
    background: var(--r4c-bg);
    color: var(--r4c-text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

.r4c-wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

a { color: inherit; text-decoration: none; }

/* ── Header ─────────────────────────────────────────────────────────── */
.r4c-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(10,10,13,0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--r4c-border);
}
.r4c-header__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.r4c-logo { font-weight: 900; font-size: 22px; letter-spacing: -0.02em; }
.r4c-logo__dot { color: var(--r4c-accent); }
.r4c-nav { display: flex; align-items: center; gap: 28px; font-size: 14.5px; font-weight: 500; }
.r4c-nav a { color: var(--r4c-text-dim); transition: color .15s; }
.r4c-nav a:hover { color: var(--r4c-text); }
.r4c-nav__cta {
    background: var(--r4c-accent-grad); color: #0a0a0d !important;
    padding: 10px 20px; border-radius: 999px; font-weight: 700;
}
.r4c-navtoggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.r4c-navtoggle span { width: 22px; height: 2px; background: var(--r4c-text); }

/* ── Hero ───────────────────────────────────────────────────────────── */
.r4c-hero { position: relative; padding: 140px 0 100px; overflow: hidden; text-align: center; }
.r4c-hero__bg {
    position: absolute; inset: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(255,77,28,0.25), transparent 45%),
        radial-gradient(circle at 80% 10%, rgba(255,176,32,0.18), transparent 40%),
        var(--r4c-bg);
    z-index: -1;
}
.r4c-hero__eyebrow {
    display: inline-block; text-transform: uppercase; letter-spacing: 0.15em;
    font-size: 12.5px; font-weight: 700; color: var(--r4c-accent-2); margin-bottom: 18px;
}
.r4c-hero__title {
    font-size: clamp(42px, 8vw, 84px); font-weight: 900; letter-spacing: -0.03em;
    margin: 0 0 18px; background: var(--r4c-accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.r4c-hero__subtitle { font-size: clamp(17px, 2.4vw, 22px); color: var(--r4c-text-dim); max-width: 640px; margin: 0 auto 14px; }
.r4c-hero__date { color: var(--r4c-text-dim); font-weight: 600; margin-bottom: 40px; }
.r4c-hero__cta { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

.r4c-btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 15px 30px; border-radius: 999px; font-weight: 700; font-size: 15px;
    transition: transform .15s, opacity .15s; cursor: pointer; border: none;
}
.r4c-btn--primary { background: var(--r4c-accent-grad); color: #0a0a0d; }
.r4c-btn--ghost { background: transparent; border: 1.5px solid var(--r4c-border); color: var(--r4c-text); }
.r4c-btn--text { background: transparent; color: var(--r4c-text-dim); padding: 15px 10px; }
.r4c-btn:hover { transform: translateY(-2px); }

/* ── Sections ───────────────────────────────────────────────────────── */
.r4c-section { padding: 90px 0; }
.r4c-section--first { padding-top: 150px; }
.r4c-section--alt { background: var(--r4c-bg-alt); }
.r4c-section__tag {
    display: inline-block; text-transform: uppercase; letter-spacing: 0.14em;
    font-size: 12px; font-weight: 700; color: var(--r4c-accent); margin-bottom: 12px;
}
.r4c-section__title { font-size: clamp(28px, 4vw, 42px); font-weight: 800; letter-spacing: -0.02em; margin: 0 0 22px; }
.r4c-section__text { color: var(--r4c-text-dim); font-size: 17px; max-width: 760px; }

/* ── Charity cards ──────────────────────────────────────────────────── */
.r4c-charity-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.r4c-charity-card {
    background: var(--r4c-surface); border: 1px solid var(--r4c-border);
    border-radius: 18px; padding: 30px;
}
.r4c-charity-card h3 { margin: 0 0 12px; font-size: 19px; }
.r4c-charity-card p { color: var(--r4c-text-dim); margin: 0; }

/* ── Timeline ───────────────────────────────────────────────────────── */
.r4c-timeline { display: flex; flex-direction: column; gap: 0; border-left: 2px solid var(--r4c-border); margin-left: 8px; }
.r4c-timeline__item { display: grid; grid-template-columns: 110px 1fr; gap: 20px; padding: 20px 0 20px 28px; position: relative; }
.r4c-timeline__item::before {
    content: ''; position: absolute; left: -7px; top: 26px; width: 12px; height: 12px;
    border-radius: 50%; background: var(--r4c-accent-grad);
}
.r4c-timeline__time { font-weight: 700; color: var(--r4c-accent-2); font-size: 14.5px; padding-top: 3px; }
.r4c-timeline__body h4 { margin: 6px 0 4px; font-size: 17px; }
.r4c-timeline__body p { margin: 0; color: var(--r4c-text-dim); font-size: 14.5px; }
.r4c-badge {
    display: inline-block; font-size: 11px; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.06em; padding: 4px 10px; border-radius: 999px; background: var(--r4c-border);
}
.r4c-badge--gaming { background: rgba(255,77,28,0.18); color: #ff8a5c; }
.r4c-badge--musik { background: rgba(255,176,32,0.18); color: var(--r4c-accent-2); }
.r4c-badge--halbzeitshow { background: rgba(160,100,255,0.18); color: #b98aff; }
.r4c-badge--charity { background: rgba(255,90,140,0.18); color: #ff85ac; }
.r4c-badge--community { background: rgba(90,200,255,0.18); color: #7cd4ff; }

/* ── Artist / giveaway cards ────────────────────────────────────────── */
.r4c-artist-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 22px; }
.r4c-artist-card {
    background: var(--r4c-surface); border: 1px solid var(--r4c-border);
    border-radius: 18px; overflow: hidden; transition: transform .15s;
}
.r4c-artist-card:hover { transform: translateY(-4px); }
.r4c-artist-card__image {
    height: 180px; background: var(--r4c-bg-alt) center/cover no-repeat;
    background-image: linear-gradient(135deg, rgba(255,77,28,0.15), rgba(255,176,32,0.1));
}
.r4c-artist-card__body { padding: 20px; }
.r4c-artist-card__body h3 { margin: 0 0 6px; font-size: 18px; }
.r4c-artist-card__cat { display: inline-block; font-size: 12px; color: var(--r4c-accent-2); font-weight: 600; margin-bottom: 8px; }
.r4c-artist-card__body p { color: var(--r4c-text-dim); font-size: 14.5px; margin: 0 0 10px; }
.r4c-artist-card__social { display: flex; gap: 10px; flex-wrap: wrap; }
.r4c-artist-card__social a { font-size: 13px; color: var(--r4c-text-dim); border: 1px solid var(--r4c-border); padding: 4px 10px; border-radius: 999px; }
.r4c-artist-card__social a:hover { color: var(--r4c-accent-2); }

/* ── Logo grid ──────────────────────────────────────────────────────── */
.r4c-logo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 18px; }
.r4c-logo-grid__item {
    display: flex; align-items: center; justify-content: center; height: 90px;
    background: var(--r4c-surface); border: 1px solid var(--r4c-border); border-radius: 14px;
    padding: 16px; filter: grayscale(1) opacity(0.7); transition: filter .15s;
}
.r4c-logo-grid__item:hover { filter: grayscale(0) opacity(1); }
.r4c-logo-grid__item img { max-width: 100%; max-height: 100%; object-fit: contain; }
.r4c-logo-grid__item span { font-weight: 700; color: var(--r4c-text-dim); }

/* ── FAQ ─────────────────────────────────────────────────────────────── */
.r4c-faq { max-width: 780px; display: flex; flex-direction: column; gap: 10px; }
.r4c-faq__item {
    background: var(--r4c-surface); border: 1px solid var(--r4c-border);
    border-radius: 14px; padding: 18px 22px;
}
.r4c-faq__item summary { cursor: pointer; font-weight: 700; list-style: none; }
.r4c-faq__item summary::-webkit-details-marker { display: none; }
.r4c-faq__item summary::after { content: '+'; float: right; color: var(--r4c-accent); font-size: 20px; }
.r4c-faq__item[open] summary::after { content: '−'; }
.r4c-faq__item p { color: var(--r4c-text-dim); margin: 12px 0 0; }

/* ── Contact ────────────────────────────────────────────────────────── */
.r4c-contact { text-align: center; }
.r4c-contact__details { display: flex; gap: 20px; justify-content: center; margin-top: 10px; font-weight: 600; }
.r4c-contact__details a { color: var(--r4c-accent-2); }

/* ── Footer ─────────────────────────────────────────────────────────── */
.r4c-footer { border-top: 1px solid var(--r4c-border); padding: 50px 0; background: var(--r4c-bg-alt); }
.r4c-footer__inner { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; align-items: center; }
.r4c-footer__logo { font-weight: 800; font-size: 18px; margin: 0 0 6px; }
.r4c-footer__claim { color: var(--r4c-text-dim); font-size: 14px; margin: 0; }
.r4c-footer__links { display: flex; gap: 22px; font-size: 14px; color: var(--r4c-text-dim); }
.r4c-footer__links a:hover { color: var(--r4c-text); }

/* ── Ticket purchase ────────────────────────────────────────────────── */
.r4c-ticket-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 18px; margin-bottom: 34px; }
.r4c-ticket-card { display: block; cursor: pointer; }
.r4c-ticket-card input { position: absolute; opacity: 0; pointer-events: none; }
.r4c-ticket-card__body {
    background: var(--r4c-surface); border: 2px solid var(--r4c-border); border-radius: 16px;
    padding: 24px; transition: border-color .15s;
}
.r4c-ticket-card input:checked + .r4c-ticket-card__body { border-color: var(--r4c-accent); }
.r4c-ticket-card input:disabled + .r4c-ticket-card__body { opacity: 0.45; cursor: not-allowed; }
.r4c-ticket-card__body h3 { margin: 0 0 8px; font-size: 18px; }
.r4c-ticket-card__body p { color: var(--r4c-text-dim); font-size: 14px; margin: 0 0 14px; }
.r4c-ticket-card__price { font-size: 22px; font-weight: 800; color: var(--r4c-accent-2); }

.r4c-checkout { max-width: 460px; background: var(--r4c-surface); border: 1px solid var(--r4c-border); border-radius: 18px; padding: 30px; }
.r4c-field { margin-bottom: 16px; }
.r4c-field label { display: block; font-size: 13px; font-weight: 600; color: var(--r4c-text-dim); margin-bottom: 6px; }
.r4c-input {
    width: 100%; padding: 13px 16px; border-radius: 10px; border: 1px solid var(--r4c-border);
    background: var(--r4c-bg); color: var(--r4c-text); font-size: 15px; font-family: inherit;
}
.r4c-input:focus { outline: none; border-color: var(--r4c-accent); }
.r4c-error { color: #ff6b6b; font-size: 13.5px; margin-top: 10px; min-height: 18px; }

/* ── Digital ticket ─────────────────────────────────────────────────── */
.r4c-ticket-digital { text-align: center; }
.r4c-ticket-digital__card {
    background: var(--r4c-surface); border: 1px solid var(--r4c-border); border-radius: 20px;
    padding: 34px; margin: 26px 0;
}
.r4c-ticket-digital__label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--r4c-text-dim); margin: 14px 0 2px; }
.r4c-ticket-digital__label:first-child { margin-top: 0; }
.r4c-ticket-digital__number { font-family: monospace; font-size: 17px; font-weight: 700; color: var(--r4c-accent-2); margin: 0; }
.r4c-ticket-digital__name { font-size: 19px; font-weight: 700; margin: 0; }
.r4c-ticket-digital__qr { width: 220px; height: 220px; margin: 22px auto 0; border-radius: 12px; background: #fff; padding: 10px; }

/* ── Responsive ─────────────────────────────────────────────────────── */
@media (max-width: 860px) {
    .r4c-nav { position: fixed; inset: 72px 0 0 0; background: var(--r4c-bg); flex-direction: column; padding: 30px 24px; gap: 20px; transform: translateX(100%); transition: transform .2s; }
    .r4c-nav.is-open { transform: translateX(0); }
    .r4c-navtoggle { display: flex; }
    .r4c-timeline__item { grid-template-columns: 1fr; }
}