/* ============================================================
   event.breubeer.de — Modernes Design
   Theme: System (Dark/Light), Glassmorphism, Inter-Font
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --bg-1: #eef2ff;
  --bg-2: #fce7f3;
  --bg-3: #e0f2fe;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-border: rgba(255, 255, 255, 0.8);
  --surface-solid: #ffffff;
  --text: #0f172a;
  --text-muted: #475569;
  --text-faint: #94a3b8;
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-bg: rgba(99, 102, 241, 0.08);
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.1);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --border: rgba(15, 23, 42, 0.08);
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 60px rgba(15, 23, 42, 0.12);
  --radius: 18px;
  --radius-sm: 10px;
  --radius-lg: 24px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-1: #0b1020;
    --bg-2: #1a1035;
    --bg-3: #0a1f33;
    --surface: rgba(30, 41, 59, 0.55);
    --surface-border: rgba(148, 163, 184, 0.12);
    --surface-solid: #1e293b;
    --text: #f1f5f9;
    --text-muted: #cbd5e1;
    --text-faint: #64748b;
    --primary: #818cf8;
    --primary-dark: #6366f1;
    --primary-bg: rgba(129, 140, 248, 0.12);
    --success: #34d399;
    --success-bg: rgba(52, 211, 153, 0.12);
    --danger: #f87171;
    --danger-bg: rgba(248, 113, 113, 0.12);
    --warning: #fbbf24;
    --warning-bg: rgba(251, 191, 36, 0.12);
    --border: rgba(148, 163, 184, 0.14);
    --shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 30px 80px rgba(0, 0, 0, 0.5);
  }
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-1);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Animierter Hintergrund-Gradient */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 10% 10%, var(--bg-2) 0%, transparent 45%),
    radial-gradient(circle at 90% 20%, var(--bg-3) 0%, transparent 50%),
    radial-gradient(circle at 50% 90%, var(--bg-2) 0%, transparent 45%);
  opacity: 0.35;
  z-index: -3;
  animation: gradientShift 20s ease-in-out infinite alternate;
}

@keyframes gradientShift {
  from { transform: scale(1) rotate(0deg); }
  to { transform: scale(1.1) rotate(3deg); }
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

.container.narrow { max-width: 640px; }

/* ---- Nav ---- */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
}
.nav .logo {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav .logo .logo-mark {
  height: 32px;
  width: auto;
  object-fit: contain;
  display: block;
  transition: transform 0.2s ease;
}
.nav .logo:hover .logo-mark {
  transform: scale(1.08) rotate(-2deg);
}
@media (prefers-color-scheme: dark) {
  .nav .logo .logo-mark { filter: brightness(0) invert(1); }
}

.hero-logo {
  display: block;
  height: 140px;
  width: auto;
  margin: 0 auto 20px;
  object-fit: contain;
  animation: heroLogoIn 0.7s ease backwards;
}
@media (prefers-color-scheme: dark) {
  .hero-logo { filter: brightness(0) invert(1); }
}
@media (max-width: 600px) {
  .hero-logo { height: 100px; margin-bottom: 16px; }
}
@keyframes heroLogoIn {
  from { opacity: 0; transform: translateY(-8px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.nav-links { display: flex; gap: 18px; font-size: 0.9rem; }
.nav-links a { color: var(--text-muted); text-decoration: none; transition: color 0.2s; }
.nav-links a:hover { color: var(--primary); }

/* ---- Hero (Landing) ---- */
.hero {
  text-align: center;
  margin-bottom: 48px;
  padding: 16px 0;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p {
  color: var(--text);
  font-size: 1.08rem;
  max-width: 560px;
  margin: 0 auto;
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(10px) saturate(140%);
  -webkit-backdrop-filter: blur(10px) saturate(140%);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 999px;
  box-shadow: 0 2px 18px rgba(15, 23, 42, 0.05);
  display: inline-block;
}
@media (prefers-color-scheme: dark) {
  .hero p {
    background: rgba(30, 41, 59, 0.5);
    border-color: rgba(148, 163, 184, 0.2);
    color: var(--text-muted);
  }
}

/* ---- Event-Grid (Landing) ---- */
.event-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.event-card {
  background: var(--surface);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  animation: fadeUp 0.5s ease backwards;
}
.event-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.event-card .thumb {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #6366f1, #ec4899);
  background-size: cover; background-position: center;
  position: relative;
}
.event-card .thumb::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.35));
}
.event-card .body {
  padding: 20px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.event-card .date-chip {
  display: inline-flex;
  align-items: center; gap: 6px;
  padding: 5px 11px;
  background: var(--primary-bg);
  color: var(--primary);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  align-self: flex-start;
  margin-bottom: 4px;
}
.event-card h3 {
  font-size: 1.2rem; font-weight: 700; letter-spacing: -0.02em;
  line-height: 1.3;
}
.event-card .meta { color: var(--text-muted); font-size: 0.92rem; }
.event-card .footer {
  margin-top: auto; padding-top: 14px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.86rem; color: var(--text-faint);
}
.event-card .badge {
  font-size: 0.75rem; font-weight: 600;
  padding: 4px 9px; border-radius: 6px;
}
.event-card .badge.full { background: var(--danger-bg); color: var(--danger); }
.event-card .badge.closed { background: var(--warning-bg); color: var(--warning); }
.event-card .badge.open { background: var(--success-bg); color: var(--success); }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}
.event-card:nth-child(1) { animation-delay: 0ms; }
.event-card:nth-child(2) { animation-delay: 80ms; }
.event-card:nth-child(3) { animation-delay: 160ms; }
.event-card:nth-child(4) { animation-delay: 240ms; }
.event-card:nth-child(5) { animation-delay: 320ms; }
.event-card:nth-child(n+6) { animation-delay: 400ms; }

/* Empty state */
.empty-state {
  text-align: center; padding: 80px 20px;
  color: var(--text-muted);
}
.empty-state .icon { font-size: 3rem; margin-bottom: 16px; opacity: 0.4; }

/* ---- Event-Detail-Page ---- */
.event-hero {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 32px;
  box-shadow: var(--shadow);
  background: var(--surface);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  border: 1px solid var(--surface-border);
}
.event-hero .image {
  aspect-ratio: 16 / 8;
  background-size: cover; background-position: center;
  background-color: #6366f1;
  background-image: linear-gradient(135deg, #6366f1, #ec4899);
}
.event-hero .body { padding: 32px; }
.event-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 10px;
}
.event-hero .subtitle { color: var(--text-muted); font-size: 1.1rem; margin-bottom: 20px; }

.event-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  list-style: none;
  margin: 20px 0 24px;
}
.event-meta li {
  background: var(--primary-bg);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
}
.event-meta .label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  font-weight: 600;
  margin-bottom: 4px;
}
.event-meta .value { font-weight: 600; }

.event-description {
  line-height: 1.75;
  color: var(--text-muted);
  white-space: pre-wrap;
  margin-bottom: 8px;
}

.event-actions-bar {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-top: 20px;
}

/* ---- Card ---- */
.card {
  background: var(--surface);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.card h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.card.success {
  border-color: var(--success);
  background: linear-gradient(135deg, var(--success-bg), var(--surface));
}

/* ---- Form ---- */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}
.field > span, .answer-field legend {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text);
}
.req { color: var(--danger); margin-left: 3px; }
.optional { color: var(--text-faint); font-weight: 500; font-size: 0.85em; margin-left: 4px; }
.field .hint-muted {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.field .hint-muted a { color: var(--primary); }
.mail-note {
  display: inline-block;
  margin-top: 8px;
  padding: 6px 12px;
  background: var(--success-bg);
  color: var(--success);
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
}
input[type="text"], input[type="email"], input[type="number"], input[type="date"], input[type="time"], input[type="url"], textarea, select {
  font: inherit; color: inherit;
  background: var(--surface-solid);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-bg);
}
textarea { resize: vertical; min-height: 100px; font-family: inherit; }

.answer-field {
  border: none;
  margin-bottom: 18px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.answer-field legend { margin-bottom: 10px; }
.radio-group { display: flex; gap: 10px; flex-wrap: wrap; width: 100%; }
.radio {
  flex: 1;
  min-width: 140px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: var(--surface-solid);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
}
.radio:hover { border-color: var(--primary); }
.radio input { margin: 0; accent-color: var(--primary); }
.radio:has(input:checked) {
  border-color: var(--primary);
  background: var(--primary-bg);
  box-shadow: 0 0 0 4px var(--primary-bg);
}
.radio.yes:has(input:checked) {
  border-color: var(--success);
  background: var(--success-bg);
  box-shadow: 0 0 0 4px var(--success-bg);
}
.radio.no:has(input:checked) {
  border-color: var(--danger);
  background: var(--danger-bg);
  box-shadow: 0 0 0 4px var(--danger-bg);
}

.consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  background: var(--primary-bg);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.consent input { margin-top: 3px; accent-color: var(--primary); }
.consent a { color: var(--primary); font-weight: 500; }

/* ---- Buttons ---- */
button, .btn {
  font: inherit;
  font-weight: 600;
  padding: 13px 22px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
}
.btn-primary, button[type="submit"] {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
  width: 100%;
}
.btn-primary:hover, button[type="submit"]:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 22px rgba(99, 102, 241, 0.42);
}
.btn-primary:disabled, button[type="submit"]:disabled {
  opacity: 0.55; cursor: not-allowed; transform: none;
  box-shadow: none;
}
.btn-secondary {
  background: var(--surface-solid);
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  padding: 8px 12px;
}
.btn-ghost:hover { color: var(--primary); background: var(--primary-bg); }
.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
}
.btn-danger:hover { background: var(--danger); color: white; }
.btn-sm { padding: 8px 14px; font-size: 0.88rem; }

/* ---- Error / Success ---- */
.error {
  color: var(--danger);
  background: var(--danger-bg);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-top: 10px;
  font-size: 0.92rem;
}

.withdraw-box {
  margin-top: 24px;
  padding: 20px;
  background: var(--warning-bg);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--warning);
}
.withdraw-box .withdraw-link {
  display: block;
  word-break: break-all;
  padding: 10px;
  background: var(--surface-solid);
  border-radius: 6px;
  margin: 10px 0 4px;
  font-family: 'SF Mono', Menlo, monospace;
  font-size: 0.82rem;
  color: var(--primary);
  text-decoration: none;
}
.withdraw-box .hint { font-size: 0.85rem; color: var(--text-muted); margin-top: 6px; }

/* ---- Footer ---- */
.footer {
  text-align: center;
  margin-top: 60px;
  color: var(--text-faint);
  font-size: 0.9rem;
}
.footer a { color: var(--text-muted); text-decoration: none; margin: 0 10px; }
.footer a:hover { color: var(--primary); }

/* ---- Loading ---- */
.skeleton {
  background: linear-gradient(90deg, var(--border) 25%, var(--surface-solid) 50%, var(--border) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer {
  from { background-position: 200% 0; }
  to { background-position: -200% 0; }
}

/* ---- Utilities ---- */
.center { text-align: center; }
.muted { color: var(--text-muted); }
[hidden] { display: none !important; }

@media (max-width: 600px) {
  .container { padding: 20px 16px 60px; }
  .card { padding: 22px; }
  .event-hero .body { padding: 24px 20px; }
  .radio { min-width: 100%; }
}

/* ============================================================
   Brain Layer – Neuronen-Canvas (unter dem Shape-Layer)
   ============================================================ */
.brain-layer {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  pointer-events: none;
  opacity: 1;
}
@media (prefers-color-scheme: dark) {
  .brain-layer { opacity: 0.9; }
}
@media (prefers-reduced-motion: reduce) {
  .brain-layer { opacity: 0.6; }
}

/* ============================================================
   Shape Layer – animierte geometrische Formen
   ============================================================ */
.shape-layer {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}
.shape {
  transform-box: fill-box;
  transform-origin: center;
  will-change: transform, opacity;
}
.shape--blob-a { opacity: 0.28; animation: drift-a 60s ease-in-out infinite alternate; }
.shape--blob-b { opacity: 0.22; animation: drift-b 80s ease-in-out infinite alternate; }
.shape--ring {
  fill: none;
  stroke: rgba(99, 102, 241, 0.4);
  stroke-width: 1;
  stroke-dasharray: 4 8;
  animation: breathe 90s ease-in-out infinite alternate;
}
.shape--hex {
  fill: none;
  stroke: rgba(236, 72, 153, 0.38);
  stroke-width: 1.2;
  animation: spin-hex 55s linear infinite;
}
.shape--tri {
  fill: rgba(99, 102, 241, 0.1);
  stroke: rgba(99, 102, 241, 0.25);
  stroke-width: 0.8;
  animation: spin-tri 45s linear infinite;
}

@keyframes drift-a {
  from { transform: translate(-3%, 2%) scale(1); }
  to   { transform: translate(4%, -4%) scale(1.08); }
}
@keyframes drift-b {
  from { transform: translate(2%, -2%) scale(1); }
  to   { transform: translate(-5%, 5%) scale(1.12); }
}
@keyframes breathe {
  from { transform: scale(1); opacity: 0.25; }
  to   { transform: scale(1.08); opacity: 0.45; }
}
@keyframes spin-hex {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
@keyframes spin-tri {
  from { transform: rotate(0deg); }
  to   { transform: rotate(-360deg); }
}

@media (prefers-color-scheme: dark) {
  .shape--blob-a { opacity: 0.32; mix-blend-mode: screen; }
  .shape--blob-b { opacity: 0.28; mix-blend-mode: screen; }
  .shape--ring   { stroke: rgba(129, 140, 248, 0.5); }
  .shape--hex    { stroke: rgba(244, 114, 182, 0.45); }
  .shape--tri    { fill: rgba(129, 140, 248, 0.14); stroke: rgba(129, 140, 248, 0.38); }
}

.shape-layer.subtle .shape { opacity: 0.55; }
.shape-layer.subtle .shape--blob-a { opacity: 0.32; }
.shape-layer.subtle .shape--blob-b { opacity: 0.25; }

@media (prefers-reduced-motion: reduce) {
  .shape { animation: none !important; }
}

/* ============================================================
   Legal Pages (Impressum / Datenschutz)
   ============================================================ */
.legal-article {
  padding: 36px 40px 42px;
}
.legal-article .back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.92rem;
  text-decoration: none;
  margin-bottom: 20px;
  transition: color 0.2s;
}
.legal-article .back-link:hover { color: var(--primary); }
.legal-article h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 10px;
  background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.legal-article .lead {
  color: var(--text-muted);
  font-size: 1.02rem;
  margin-bottom: 28px;
}
.legal-article .stand {
  color: var(--text-faint);
  font-size: 0.88rem;
  margin-top: 32px;
}
.legal-article section {
  margin: 30px 0;
}
.legal-article section h2 {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  color: var(--text);
}
.legal-article section h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 18px 0 8px;
  color: var(--text);
}
.legal-article p {
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 10px;
}
.legal-article ul {
  list-style: disc;
  padding-left: 22px;
  margin: 8px 0 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.legal-article ul li { margin-bottom: 4px; }
.legal-article strong { color: var(--text); font-weight: 600; }
.legal-article address {
  font-style: normal;
  background: var(--primary-bg);
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  line-height: 1.75;
}
.legal-article a { color: var(--primary); text-decoration: none; }
.legal-article a:hover { text-decoration: underline; }

@media (max-width: 600px) {
  .legal-article { padding: 26px 22px 32px; }
}