:root {
  --bg: #0f172a;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --brand: #2d8cff;
  --brand-dark: #1f6fe0;
  --danger: #dc2626;
  --ok: #16a34a;
  --line: #e5e7eb;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 50% -10%, #1e3a8a 0%, var(--bg) 60%);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 16px;
  line-height: 1.5;
}

.card {
  background: var(--card);
  width: 100%;
  max-width: 440px;
  border-radius: 16px;
  padding: 28px 26px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.card.wide { max-width: 760px; }

h1 {
  font-size: 1.45rem;
  margin: 0 0 4px;
}

.topic {
  color: var(--brand-dark);
  font-weight: 600;
  margin: 0 0 18px;
}

.form { display: grid; gap: 14px; }

label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
}

input[type="text"],
input[type="email"],
input[type="password"] {
  width: 100%;
  margin-top: 6px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 9px;
  font-size: 1rem;
  background: #fff;
}

input:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(45, 140, 255, 0.15);
}

select {
  width: 100%;
  margin-top: 6px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 9px;
  font-size: 1rem;
  background: #fff;
}

code {
  background: #f1f5f9;
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 0.85em;
}

.req { color: var(--danger); }

.btn {
  display: inline-block;
  text-align: center;
  text-decoration: none;
  background: var(--brand);
  color: #fff;
  border: none;
  border-radius: 9px;
  padding: 12px 16px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 4px;
}

.btn:hover { background: var(--brand-dark); }

.btn.ghost {
  background: transparent;
  color: var(--brand-dark);
  border: 1px solid var(--line);
}

.btn.danger { background: var(--danger); }

.row { display: flex; gap: 10px; flex-wrap: wrap; }
.row .btn { margin-top: 0; }

.notice {
  background: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
  padding: 10px 12px;
  border-radius: 9px;
  margin-bottom: 16px;
  font-size: 0.92rem;
}

.error {
  background: #fef2f2;
  color: #991b1b;
  border: 1px solid #fecaca;
  padding: 10px 12px;
  border-radius: 9px;
  margin-bottom: 16px;
  font-size: 0.92rem;
}

.muted { color: var(--muted); }
.small { font-size: 0.82rem; }
.muted.small { margin-top: 14px; text-align: center; }

/* Pantalla de carga de la reunión */
#loading {
  position: fixed;
  inset: 0;
  background: var(--bg);
  color: #e5e7eb;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  text-align: center;
  padding: 20px;
}

.spinner {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 5px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--brand);
  animation: spin 0.9s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

#loading p { font-size: 1.05rem; margin: 0; }

.err .btn { margin-top: 10px; }

/* Panel de administración */
.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 0.86rem;
}
.table th, .table td {
  border-bottom: 1px solid var(--line);
  padding: 8px 6px;
  text-align: left;
}
.table th { color: var(--muted); font-weight: 600; }

.mt0 { margin-top: 0; }
.muted a { color: var(--brand-dark); }