/* ============================================================
   Waldfest am Teufelsberg – Stylesheet
   Dunkelgrünes Waldfest-Design, mobile-first & responsive
   ============================================================ */

:root {
    /* Grüntöne (Waldfest-Grün) */
    --green-darkest: #08180e;
    --green-darker:  #0c2415;
    --green-dark:    #0f3320;   /* Haupt-Hintergrund */
    --green-mid:     #14512a;
    --green:         #1d6b34;
    --green-accent:  #6cba2c;   /* Logo-Grün */
    --green-accent2: #8ad13c;

    /* Akzente */
    --red:    #d32f2f;          /* FF-Rot */
    --cream:  #f3f7ef;
    --muted:  #b9ccb6;
    --line:   rgba(255,255,255,0.10);

    --shadow:  0 10px 30px rgba(0,0,0,0.35);
    --radius:  14px;

    --font-head: 'Oswald', 'Arial Narrow', sans-serif;
    --font-body: 'Roboto', system-ui, sans-serif;

    --maxw: 1140px;
}

/* ── Reset / Basis ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--cream);
    background: var(--green-dark);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }

a { color: var(--green-accent2); text-decoration: none; transition: color .2s; }
a:hover { color: var(--cream); }

h1, h2, h3 {
    font-family: var(--font-head);
    font-weight: 600;
    line-height: 1.1;
    margin: 0 0 .5em;
    letter-spacing: .5px;
}

h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); text-transform: uppercase; }
h3 { font-size: 1.4rem; }

.skip-link {
    position: absolute; left: -999px; top: 0;
    background: var(--green-accent); color: #04160a; padding: .6rem 1rem; z-index: 200;
}
.skip-link:focus { left: 0; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem; }
.text-center { text-align: center; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
    display: inline-block;
    font-family: var(--font-head);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: .85rem 1.8rem;
    border-radius: 50px;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    transition: transform .15s, background .2s, color .2s, box-shadow .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
    background: var(--green-accent);
    color: #06210d;
    box-shadow: 0 6px 18px rgba(108,186,44,0.35);
}
.btn-primary:hover { background: var(--green-accent2); color: #06210d; }
.btn-ghost {
    background: transparent;
    color: var(--cream);
    border-color: var(--green-accent);
}
.btn-ghost:hover { background: var(--green-accent); color: #06210d; }
.btn-block { width: 100%; }

/* ── Navigation ──────────────────────────────────────────── */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(8,24,14,0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
}
.navbar {
    max-width: var(--maxw); margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    padding: .6rem 1.25rem;
}
.nav-brand { display: flex; align-items: center; }
.nav-logo { height: 42px; width: auto; }

.nav-menu {
    list-style: none; display: flex; gap: .35rem;
    margin: 0; padding: 0; align-items: center;
}
.nav-menu a {
    color: var(--cream);
    font-family: var(--font-head);
    text-transform: uppercase;
    font-size: .92rem;
    letter-spacing: .5px;
    padding: .5rem .75rem;
    border-radius: 8px;
    transition: background .2s, color .2s;
}
.nav-menu a:hover, .nav-menu a.active { background: var(--green-mid); color: #fff; }
.nav-menu a.nav-cta {
    background: var(--green-accent); color: #06210d; font-weight: 600;
}
.nav-menu a.nav-cta:hover { background: var(--green-accent2); }

.nav-toggle {
    display: none;
    flex-direction: column; gap: 5px;
    background: none; border: 0; cursor: pointer; padding: 8px;
}
.nav-toggle span {
    width: 26px; height: 3px; background: var(--cream); border-radius: 2px;
    transition: transform .3s, opacity .3s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ── Hero ────────────────────────────────────────────────── */
.hero {
    position: relative;
    min-height: calc(100vh - 64px);
    display: flex; align-items: center; justify-content: center;
    text-align: center;
    background: url('../img/header-bg.jpg') center/cover no-repeat;
    padding: 3rem 1.25rem;
    overflow: hidden;
}
.hero-video {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    z-index: 0;
    pointer-events: none;
}
.hero-overlay {
    position: absolute; inset: 0; z-index: 1;
    background: linear-gradient(180deg, rgba(8,24,14,0.72) 0%, rgba(12,36,21,0.82) 55%, var(--green-dark) 100%);
}
.hero-content { position: relative; z-index: 2; max-width: 800px; }

/* Bei „Bewegung reduzieren" das Video ausblenden – Poster/Bild bleibt */
@media (prefers-reduced-motion: reduce) {
    .hero-video { display: none; }
}
.hero-logo {
    width: min(85vw, 620px); margin: 0 auto 1.5rem;
    border-radius: var(--radius);
    border: 1px solid rgba(255,255,255,0.12);
    box-shadow: 0 12px 36px rgba(0,0,0,0.6);
}
.hero-date {
    font-family: var(--font-head);
    font-size: clamp(1.5rem, 5vw, 2.6rem);
    font-weight: 700;
    color: var(--green-accent2);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin: 0 0 .25rem;
    text-shadow: 0 2px 12px rgba(0,0,0,0.6);
}
.hero-sub {
    font-size: 1.1rem; color: var(--cream); letter-spacing: 1px;
    margin: 0 0 2rem; text-transform: uppercase;
}
.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.hero-scroll {
    display: inline-block; margin-top: 2.5rem;
    font-size: 2rem; color: var(--green-accent2);
    animation: bounce 2s infinite;
}
@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(10px); }
}

/* ── Sections ────────────────────────────────────────────── */
.section { padding: 5rem 0; }
.section-dark { background: var(--green-darker); }
.section-intro { background: var(--green-dark); }

.eyebrow {
    display: inline-block;
    font-family: var(--font-head);
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--green-accent);
    font-size: .95rem;
    margin-bottom: .5rem;
}
.lead { font-size: 1.15rem; color: var(--cream); max-width: 760px; }
.section-intro-text { color: var(--muted); max-width: 680px; margin-bottom: 2rem; }
.text-center .section-intro-text { margin-left: auto; margin-right: auto; }
.hint { color: var(--muted); font-size: .9rem; margin-top: 1.5rem; }

/* ── Feature-Grid ────────────────────────────────────────── */
.feature-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 1.5rem; margin-top: 2.5rem;
}
.feature-card {
    background: var(--green-darker);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    text-align: center;
    transition: transform .2s, border-color .2s;
}
.feature-card:hover { transform: translateY(-5px); border-color: var(--green-accent); }
.feature-icon { font-size: 2.6rem; display: block; margin-bottom: .75rem; }
.feature-card h3 { color: var(--green-accent2); }
.feature-card p { color: var(--muted); margin: 0; font-size: .98rem; }

/* ── Tabs (Programm & Galerie) ───────────────────────────── */
.tabs {
    display: flex; flex-wrap: wrap; gap: .75rem; margin: 2rem 0;
}
.tab-btn {
    flex: 1 1 180px;
    background: var(--green-dark);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    color: var(--cream);
    padding: 1rem 1.25rem;
    cursor: pointer;
    text-align: left;
    transition: background .2s, border-color .2s, transform .15s;
}
.tab-btn:hover { border-color: var(--green-accent); transform: translateY(-2px); }
.tab-btn.active {
    background: var(--green-mid);
    border-color: var(--green-accent);
}
.tab-day {
    display: block; font-family: var(--font-head);
    font-size: 1.3rem; font-weight: 600; text-transform: uppercase;
}
.tab-date { display: block; color: var(--muted); font-size: .9rem; }
.tab-btn.active .tab-date { color: var(--green-accent2); }

.tab-panel { display: none; animation: fade .35s ease; }
.tab-panel.active { display: block; }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ── Timetable ───────────────────────────────────────────── */
.timetable { list-style: none; margin: 0; padding: 0; }
.tt-row {
    display: flex; align-items: center; gap: 1.25rem;
    padding: 1.1rem 1.25rem;
    border-radius: var(--radius);
    background: var(--green-dark);
    border-left: 4px solid var(--green-accent);
    margin-bottom: .75rem;
    transition: transform .15s, background .2s;
}
.tt-row:hover { transform: translateX(4px); background: var(--green-mid); }
.tt-photo {
    width: 64px; height: 64px; flex-shrink: 0;
    border-radius: 50%; object-fit: cover;
    border: 2px solid var(--green-accent);
}
.tt-info { display: flex; flex-direction: column; }
.tt-act { font-family: var(--font-head); font-size: 1.2rem; text-transform: uppercase; letter-spacing: .5px; }
.tt-desc { color: var(--muted); font-size: .95rem; }

/* ── Atemschutzchallenge ─────────────────────────────────── */
.section-challenge {
    background:
        linear-gradient(rgba(8,24,14,0.86), rgba(12,36,21,0.92)),
        radial-gradient(circle at 80% 20%, rgba(211,47,47,0.25), transparent 55%);
    border-top: 3px solid var(--red);
    border-bottom: 3px solid var(--red);
}
.challenge-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; margin-top: 2rem;
    align-items: start;
}
.check-list { list-style: none; padding: 0; margin: 1.5rem 0 0; }
.check-list li {
    padding: .5rem 0 .5rem 2rem; position: relative; color: var(--cream);
}
.check-list li::before {
    content: "✓"; position: absolute; left: 0;
    color: var(--green-accent2); font-weight: 700; font-size: 1.2rem;
}
/* Info-Karten der Challenge */
.info-cards {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem; margin: 2.5rem 0;
}
.info-card {
    background: var(--green-darker);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: border-color .2s, transform .2s;
}
.info-card:hover { border-color: var(--green-accent); transform: translateY(-4px); }
.info-icon { font-size: 2rem; display: block; margin-bottom: .5rem; }
.info-card h3 { color: var(--green-accent2); margin-bottom: .75rem; }
.info-card > p { color: var(--muted); margin: 0 0 .75rem; }
.info-list { list-style: none; margin: 0; padding: 0; }
.info-list li {
    position: relative; padding: .4rem 0 .4rem 1.4rem; color: var(--cream);
    font-size: .98rem; line-height: 1.5;
}
.info-list li::before {
    content: "›"; position: absolute; left: 0; top: .35rem;
    color: var(--green-accent); font-weight: 700; font-size: 1.1rem;
}
.station-list li::before { content: "🔧"; font-size: .85rem; top: .55rem; }
.iban {
    display: inline-block; margin-top: .25rem;
    font-family: monospace; font-size: .95rem;
    background: var(--green-dark); border: 1px solid var(--line);
    border-radius: 8px; padding: .35rem .6rem; color: var(--green-accent2);
    letter-spacing: .5px; word-break: break-all;
}

/* YouTube-Teaser (responsiv 16:9) */
.video-teaser {
    position: relative;
    width: 100%;
    max-width: 900px;
    margin: 1.5rem auto 2.5rem;
    aspect-ratio: 16 / 9;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    background: #000;
}
.video-teaser iframe {
    position: absolute; inset: 0;
    width: 100%; height: 100%; border: 0;
}

/* Link zu vergangenen Fotos */
.past-photos-link { margin: 0 0 2.5rem; }

.challenge-form-wrap {
    background: var(--green-darker);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    max-width: 760px; margin: 0 auto;
}
.challenge-form-wrap h3 { color: var(--green-accent2); margin-bottom: 1.25rem; }

/* Truppmitglieder-Felder */
.member-fieldset {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1rem 1.25rem 1.25rem;
    margin: 0 0 1.25rem;
}
.member-fieldset legend {
    font-family: var(--font-head);
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--green-accent2);
    padding: 0 .5rem;
    font-size: 1rem;
}
.member-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1.1rem; }
.member-grid .form-row { margin-bottom: 0; }

/* Captcha-Zeile */
.captcha-row label { text-transform: none; letter-spacing: normal; font-size: 1rem; color: var(--cream); }
.captcha-row input { max-width: 160px; }

/* Checkbox-Zeile (Leihgerät) */
.check-row {
    display: flex; align-items: center; gap: .6rem;
    margin-bottom: 1.1rem; cursor: pointer;
    text-transform: none; font-family: var(--font-body);
    letter-spacing: normal; font-size: 1rem; color: var(--cream);
}
.check-row input[type="checkbox"] {
    width: 20px; height: 20px; flex-shrink: 0; accent-color: var(--green-accent);
    margin: 0;
}
.check-row span { color: var(--cream); }

/* ── Formulare ───────────────────────────────────────────── */
.form { margin-top: .5rem; }
.form-narrow { max-width: 680px; }
.form-row { margin-bottom: 1.1rem; }
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.form label {
    display: block; margin-bottom: .4rem;
    font-family: var(--font-head); letter-spacing: .5px;
    text-transform: uppercase; font-size: .9rem; color: var(--muted);
}
.form input, .form textarea {
    width: 100%;
    background: var(--green-dark);
    border: 1px solid var(--line);
    border-radius: 10px;
    color: var(--cream);
    padding: .8rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color .2s, box-shadow .2s;
}
.form input:focus, .form textarea:focus {
    outline: none;
    border-color: var(--green-accent);
    box-shadow: 0 0 0 3px rgba(108,186,44,0.2);
}
.form textarea { resize: vertical; }

/* Honeypot verstecken */
.hp { position: absolute; left: -9999px; height: 0; overflow: hidden; }

/* ── Alerts ──────────────────────────────────────────────── */
.alert {
    padding: 1rem 1.25rem; border-radius: 10px; margin-bottom: 1.5rem;
    font-weight: 500;
}
.alert-success { background: rgba(108,186,44,0.18); border: 1px solid var(--green-accent); color: var(--cream); }
.alert-error   { background: rgba(211,47,47,0.18); border: 1px solid var(--red); color: var(--cream); }

/* ── Anfahrt ─────────────────────────────────────────────── */
.anfahrt-grid {
    display: grid; grid-template-columns: 1fr 1.4fr; gap: 2.5rem;
    margin-top: 2rem; align-items: stretch;
}
.anfahrt-info .address { font-size: 1.2rem; line-height: 1.7; margin-bottom: 1.5rem; }
.map-wrap {
    min-height: 380px; border-radius: var(--radius); overflow: hidden;
    border: 1px solid var(--line); box-shadow: var(--shadow);
}
.map-wrap iframe { display: block; min-height: 380px; }

/* ── Veranstalter ────────────────────────────────────────── */
.veranstalter-card {
    display: flex; gap: 2.5rem; align-items: center;
    background: var(--green-dark);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 2.5rem;
    margin-top: 2rem;
}
.veranstalter-logo { width: 180px; flex-shrink: 0; background: #fff; border-radius: var(--radius); padding: 1rem; }
.veranstalter-body h3 { color: var(--green-accent2); }
.veranstalter-body p { color: var(--cream); }
.veranstalter-links { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 1.5rem; }

/* ── Galerie ─────────────────────────────────────────────── */
.section-galerie-head { background: var(--green-darker); padding: 4rem 0 2rem; }
.section-galerie-head h1 { font-size: clamp(2.2rem, 6vw, 3.5rem); text-transform: uppercase; }
.galerie-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
}
.galerie-item {
    display: block; border-radius: var(--radius); overflow: hidden;
    aspect-ratio: 4/3; border: 1px solid var(--line);
}
.galerie-item img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform .4s;
}
.galerie-item:hover img { transform: scale(1.07); }
.galerie-empty {
    text-align: center; color: var(--muted); padding: 3rem 1rem;
    background: var(--green-dark); border-radius: var(--radius); border: 1px dashed var(--line);
}
.galerie-item { cursor: zoom-in; }

/* ── Lightbox (Foto-Vorschau) ────────────────────────────── */
.lightbox {
    position: fixed; inset: 0; z-index: 1000;
    display: none; align-items: center; justify-content: center;
    background: rgba(4, 12, 7, 0.95);
    padding: 1.5rem;
}
.lightbox.open { display: flex; animation: fade .2s ease; }
.lb-stage {
    margin: 0; display: flex; flex-direction: column; align-items: center;
    max-width: 92vw; max-height: 88vh;
}
.lb-img {
    max-width: 92vw; max-height: 82vh; object-fit: contain;
    border-radius: 8px; box-shadow: 0 12px 44px rgba(0,0,0,.6);
    cursor: pointer; background: var(--green-darkest);
}
.lb-counter {
    color: var(--cream); margin-top: .85rem;
    font-family: var(--font-head); letter-spacing: 1.5px; font-size: 1rem;
}
.lb-close, .lb-prev, .lb-next {
    position: fixed; z-index: 1001;
    background: rgba(0,0,0,.45); border: 1px solid var(--line); color: #fff;
    cursor: pointer; border-radius: 50%;
    width: 54px; height: 54px; line-height: 1;
    display: flex; align-items: center; justify-content: center;
    transition: background .2s, transform .15s, color .2s;
}
.lb-close { top: 1.25rem; right: 1.25rem; font-size: 2rem; }
.lb-prev  { left: 1.25rem; top: 50%; transform: translateY(-50%); font-size: 2.2rem; }
.lb-next  { right: 1.25rem; top: 50%; transform: translateY(-50%); font-size: 2.2rem; }
.lb-close:hover { background: var(--green-accent); color: #06210d; }
.lb-prev:hover  { background: var(--green-accent); color: #06210d; transform: translateY(-50%) scale(1.08); }
.lb-next:hover  { background: var(--green-accent); color: #06210d; transform: translateY(-50%) scale(1.08); }

@media (max-width: 560px) {
    .lb-close, .lb-prev, .lb-next { width: 44px; height: 44px; }
    .lb-prev { left: .5rem; }
    .lb-next { right: .5rem; }
    .lb-close { top: .75rem; right: .75rem; }
}

/* ── Impressum / Rechtstexte ─────────────────────────────── */
.legal { max-width: 820px; }
.legal h2 {
    font-size: 1.3rem; color: var(--green-accent2);
    text-transform: none; letter-spacing: .5px;
    margin: 2rem 0 .5rem;
}
.legal p { color: var(--cream); margin: 0 0 .5rem; }

/* ── Footer ──────────────────────────────────────────────── */
.site-footer { background: var(--green-darkest); border-top: 1px solid var(--line); padding-top: 3rem; }
.footer-inner {
    max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem 2rem;
    display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 2rem;
}
.footer-logo { width: 200px; background: #fff; border-radius: 10px; padding: .75rem; margin-bottom: 1rem; }
.footer-veranstalter { color: var(--muted); }
.footer-col h3 { color: var(--green-accent2); font-size: 1.1rem; text-transform: uppercase; }
.footer-col p { color: var(--muted); margin: .25rem 0; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: .4rem; }
.footer-bottom {
    border-top: 1px solid var(--line); text-align: center;
    padding: 1.25rem; color: var(--muted); font-size: .9rem;
}
.footer-bottom a { color: var(--green-accent2); }

/* ════════════════════════════════════════════════════════
   RESPONSIVE / MOBILE
   ════════════════════════════════════════════════════════ */
@media (max-width: 860px) {
    .nav-toggle { display: flex; }
    .nav-menu {
        position: fixed; inset: 64px 0 auto 0;
        flex-direction: column; align-items: stretch;
        background: rgba(8,24,14,0.98);
        padding: 0 1.25rem;
        gap: .25rem;
        max-height: 0; overflow: hidden;
        transition: max-height .35s ease, padding .35s ease;
        border-bottom: 0 solid var(--line);
    }
    .nav-menu.open {
        max-height: 80vh; overflow-y: auto;
        padding: 1rem 1.25rem 2rem;
        border-bottom-width: 1px;
    }
    .nav-menu a { display: block; padding: .9rem 1rem; font-size: 1.05rem; }
    .nav-menu a.nav-cta { text-align: center; margin-top: .5rem; }

    .challenge-grid, .anfahrt-grid { grid-template-columns: 1fr; gap: 2rem; }
    .veranstalter-card { flex-direction: column; text-align: center; padding: 2rem 1.5rem; }
    .veranstalter-links { justify-content: center; }
    .footer-inner { grid-template-columns: 1fr; text-align: center; }
    .footer-logo, .veranstalter-logo { margin-left: auto; margin-right: auto; }
}

@media (max-width: 560px) {
    .section { padding: 3.5rem 0; }
    .form-grid-2 { grid-template-columns: 1fr; }
    .member-grid { grid-template-columns: 1fr; gap: 1.1rem; }
    .hero { min-height: 88vh; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; }
    .tt-row { gap: 1rem; padding: 1rem; }
    .tt-time { min-width: 60px; font-size: 1.15rem; }
    .challenge-form-wrap { padding: 1.5rem; }
}

/* Reduzierte Bewegung respektieren */
@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; scroll-behavior: auto; transition: none !important; }
}