/* The lab's look: near-black, frosted-glass card, crisp sans type, bat mark. */
:root {
  --bg: #0f0f10;
  --glass: rgba(30, 30, 33, 0.52);
  --line: rgba(241, 238, 230, 0.09);
  --ink: #f1eee6;
  --muted: #9a978f;
  --faint: #6c6a65;
  --lavender: #a296c8;
  --sans: ui-sans-serif, -apple-system, "SF Pro Text", "Segoe UI", Inter, Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --blur: blur(14px) saturate(1.1);
}

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

html,
body {
  min-height: 100%;
}

body {
  min-height: 100vh;
  /* A faint glow standing in for the lab's ink background. */
  background: radial-gradient(ellipse at 50% 35%, #19191b 0%, var(--bg) 60%) fixed;
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  display: grid;
  place-items: center;
  padding: 24px 16px;
}

main {
  width: 100%;
  max-width: 360px;
  text-align: center;
}

.mark {
  display: block;
  width: 52px;
  height: 34px;
  margin: 0 auto 20px;
  fill: #fff;
  stroke: #fff;
  stroke-width: 0.8;
  stroke-linejoin: round;
}

h1 {
  font-weight: 700;
  font-size: 2rem;
  letter-spacing: -0.02em;
}

.kicker {
  margin: 8px 0 28px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
}

.card {
  text-align: left;
  background: var(--glass);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
  display: grid;
  gap: 16px;
}
.card[hidden] {
  display: none;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--muted);
}

input:not([type="checkbox"]) {
  width: 100%;
  font: inherit;
  font-size: 1rem;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(241, 238, 230, 0.12);
  border-radius: 10px;
  padding: 11px 12px;
  outline: none;
  transition: border-color 0.15s, background 0.15s;
}
input:not([type="checkbox"]):focus {
  border-color: var(--lavender);
  background: rgba(255, 255, 255, 0.06);
}

.check {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  cursor: pointer;
}
.check input {
  width: 16px;
  height: 16px;
  accent-color: var(--lavender);
}

button,
.button {
  font: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  text-align: center;
  text-decoration: none;
  color: #17161c;
  background: var(--lavender);
  border: 0;
  border-radius: 10px;
  padding: 12px;
  cursor: pointer;
  transition: opacity 0.15s;
}
button:hover,
.button:hover {
  opacity: 0.9;
}
button:disabled {
  opacity: 0.5;
  cursor: wait;
}
button.quiet {
  color: var(--muted);
  background: transparent;
  border: 1px solid rgba(241, 238, 230, 0.12);
}

.message {
  min-height: 1.2em;
  font-size: 0.85rem;
  color: #e7a39a;
  text-align: center;
}

#signed-in p {
  color: var(--muted);
  text-align: center;
}
#signed-in strong {
  color: var(--ink);
}

/* The invite page (invite.html). */
.note {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
}
.note strong {
  color: var(--ink);
}
.hint {
  margin-top: -8px;
  font-size: 0.75rem;
  color: var(--faint);
}
input.secret {
  font-family: var(--mono);
  letter-spacing: 0.04em;
}