:root {
  color-scheme: light dark;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  --accent: #c8102e;
  --bg: #f4f4f5;
  --card: #ffffff;
  --text: #18181b;
  --muted: #71717a;
  --error: #dc2626;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #09090b;
    --card: #18181b;
    --text: #fafafa;
    --muted: #a1a1aa;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--bg);
  color: var(--text);
  padding: 24px;
}

.card {
  width: min(100%, 420px);
  background: var(--card);
  border-radius: 20px;
  padding: 28px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 0.85rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

h1 {
  margin: 0 0 8px;
  font-size: 1.6rem;
}

.subtitle {
  margin: 0 0 20px;
  color: var(--muted);
}

form {
  display: grid;
  gap: 16px;
}

label {
  display: grid;
  gap: 6px;
  font-weight: 600;
  font-size: 0.95rem;
}

.optional {
  font-weight: 400;
  color: var(--muted);
}

input {
  width: 100%;
  border: 1px solid #d4d4d8;
  border-radius: 12px;
  padding: 12px 14px;
  font: inherit;
  background: transparent;
  color: inherit;
}

button {
  margin-top: 4px;
  border: 0;
  border-radius: 12px;
  padding: 14px 16px;
  font: inherit;
  font-weight: 600;
  background: var(--accent);
  color: white;
  cursor: pointer;
}

button:disabled {
  opacity: 0.6;
  cursor: wait;
}

.error {
  margin: 0;
  color: var(--error);
  font-size: 0.92rem;
}

.success h2,
.closed h2 {
  margin-top: 0;
}

.photo-preview {
  display: grid;
  place-items: center;
}

.photo-preview img {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
}

.group-photo-wrap {
  display: grid;
  place-items: center;
  margin-bottom: 16px;
}

.group-photo {
  width: 112px;
  height: 112px;
  border-radius: 20px;
  object-fit: cover;
  border: 3px solid var(--accent);
  box-shadow: 0 8px 24px rgba(200, 16, 46, 0.18);
}