* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --bg: #1e1e2e;
  --surface: rgba(45, 45, 65, 0.7);
  --overlay: rgba(100, 100, 130, 0.3);
  --text: #e6e6fa;
  --subtext: #b0b0d0;
  --accent: #1abc9c;
  --green: #40a02b;
  --red: #d20f39;
  --yellow: #df8e1d;

  /* =============================================
     BACKGROUND THEME — uncomment one option only
     ============================================= */

  /* 1. FLAT DARK — plain dark base */
  /* --bg-style: #1e1e2e; */

  /* 2. SOFT GRADIENT — diagonal pastel blend using drawing palette colours */
  /* --bg-style: linear-gradient(135deg, #f8b4b4 0%, #e0aaff 20%, #a0c4ff 40%, #80edd0 60%, #b5ead7 80%, #ffe066 100%); */

  /* 3. COLORFUL GRADIENT — pink → lavender → sky, more expressive */
  /* --bg-style: linear-gradient(135deg, #f5c2e7 0%, #cba6f7 35%, #89b4fa 100%); */

  /* 4. DOT GRID — sketchbook graph-paper feel */
  /* --bg-style: radial-gradient(circle, #ccd0da 1px, transparent 1px);
     --bg-size: 24px 24px; */

  /* 5. NOISE / GRAIN — paper-like texture via SVG filter (see body rule below) */
  /* --bg-style: #1e1e2e; */

  /* ↓ ACTIVE SELECTION ↓ */
  --bg-style: #1e1e2e;
  --bg-size: auto;
}
html { height: 100%; }
body { min-height: 100%; background: var(--bg-style); background-size: var(--bg-size, auto); background-attachment: fixed; color: var(--text); font-family: system-ui, -apple-system, sans-serif; }

/* Noise/grain overlay — only visible when option 5 is active.
   To enable: uncomment option 5 above, then uncomment the body::after block below.
body::after {
  content: '';
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  opacity: 0.4;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px 200px;
}
*/

/* Nav */
nav { background: var(--surface); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--overlay); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; max-width: 1200px; margin: 0 auto; padding: 0.75rem 1.5rem; }
.nav-brand { display: flex; align-items: center; text-decoration: none; }
.nav-logo { height: 28px; width: auto; filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3)); }
.nav-links { display: flex; gap: 1rem; }
.nav-links a { color: var(--subtext); text-decoration: none; font-size: 0.9rem; }
.nav-links a.active, .nav-links a:hover { color: var(--accent); }

/* Flash messages */
.flash { padding: 0.6rem 1rem; font-size: 0.9rem; }
.flash-error { background: rgba(210,15,57,0.1); color: var(--red); }
.flash-success { background: rgba(64,160,43,0.1); color: var(--green); }
.flash-invite_url { background: rgba(26,188,156,0.1); color: var(--accent); word-break: break-all; }

/* Layout */
.container { max-width: 1200px; margin: 0 auto; padding: 2rem 1.5rem; }
.container.center { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: calc(100vh - 50px); text-align: center; }
h1 { font-size: 1.5rem; font-weight: 300; letter-spacing: 0.05em; margin-bottom: 0.5rem; }
.page-logo { height: 48px; width: auto; margin-bottom: 1rem; }
h2 { font-size: 1.2rem; font-weight: 400; margin-bottom: 1rem; }
.subtext { color: var(--subtext); font-size: 0.9rem; margin-bottom: 1rem; }
.accent { color: var(--accent); }
.code-display { font-size: 2rem; font-weight: 700; letter-spacing: 0.2em; color: var(--accent); margin: 1rem 0; }

/* Forms */
.container.center form { width: 100%; max-width: 400px; }
input, select { width: 100%; padding: 0.75rem 1rem; border: 1px solid var(--surface); border-radius: 8px; background: var(--surface); color: var(--text); font-size: 1rem; margin-bottom: 0.75rem; outline: none; }
input:focus, select:focus { border-color: var(--accent); }
.pw-wrap { position: relative; width: 100%; margin-bottom: 0.75rem; }
.pw-wrap input { padding-right: 3rem; margin-bottom: 0; }
.pw-toggle { position: absolute; right: 0.75rem; top: 50%; transform: translateY(-50%); background: none; border: none; font-size: 1.1rem; cursor: pointer; padding: 0.25rem; line-height: 1; color: var(--subtext); }
.btn { display: inline-block; width: 100%; padding: 0.75rem; border: none; border-radius: 8px; background: var(--accent); color: var(--bg); font-size: 1rem; font-weight: 600; cursor: pointer; margin-bottom: 0.75rem; text-align: center; }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn-secondary { background: var(--surface); color: var(--text); }
.btn-sm { padding: 0.4rem 0.75rem; font-size: 0.85rem; width: auto; margin: 0; }
.btn-danger { background: var(--red); color: var(--bg); }
.link { color: var(--subtext); font-size: 0.85rem; cursor: pointer; text-decoration: underline; }

/* Cards */
.card { background: var(--surface); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-radius: 10px; padding: 1rem; margin-bottom: 0.75rem; }
.card-title { font-weight: 600; margin-bottom: 0.2rem; }
.card-sub { font-size: 0.8rem; color: var(--subtext); margin-bottom: 0.75rem; }
.card-actions { display: flex; flex-direction: column; gap: 0.5rem; }

/* Contributors list */
.contributors { margin-top: 0.75rem; border-top: 1px solid var(--overlay); padding-top: 0.75rem; }
.contributors-title { font-size: 0.8rem; color: var(--subtext); margin-bottom: 0.5rem; text-transform: uppercase; letter-spacing: 0.05em; }
.contributor-row { display: flex; align-items: center; justify-content: space-between; padding: 0.4rem 0; }
.contributor-row.revoked { opacity: 0.5; }
.contributor-info { display: flex; flex-direction: column; }
.contributor-name { font-size: 0.9rem; }
.contributor-role { font-size: 0.75rem; color: var(--subtext); }

.hidden { display: none; }

/* ---- Desktop / wide screens ---- */
@media (min-width: 768px) {
  .container { padding: 2.5rem 2rem; }
  nav { padding: 0.75rem 2rem; }
  .nav-logo { height: 34px; }
  .nav-links { gap: 1.5rem; }
  .nav-links a { font-size: 1rem; }
  .page-logo { height: 60px; margin-bottom: 1.25rem; }
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.4rem; }
  .card { padding: 1.25rem; margin-bottom: 1rem; }
  .card-title { font-size: 1.05rem; }
  .btn { padding: 0.85rem; font-size: 1.05rem; }
  .btn-sm { padding: 0.45rem 0.85rem; font-size: 0.9rem; }
  input, select { padding: 0.85rem 1rem; font-size: 1.05rem; }
}