:root {
  --blueprint-900: #0F2338;
  --blueprint-800: #16324F;
  --blueprint-700: #1E4468;
  --line: rgba(214, 226, 237, 0.14);
  --paper: #F4F1EA;
  --paper-dim: rgba(244, 241, 234, 0.68);
  --brass: #D9A441;
  --brass-dim: rgba(217, 164, 65, 0.16);
  --ok: #6FBF8B;
  --danger: #E17B6A;
  --radius: 3px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--blueprint-900);
  color: var(--paper);
  font-family: var(--font-body);
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 20px;
  position: relative;
  overflow-x: hidden;
}

/* Fondo tipo plano técnico: grilla fina */
.blueprint-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: radial-gradient(ellipse at 50% 20%, black 0%, transparent 75%);
  pointer-events: none;
}

.frame {
  width: 100%;
  max-width: 460px;
  position: relative;
  z-index: 1;
}

.frame__header {
  margin-bottom: 28px;
}

.mark {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.mark__tick {
  width: 10px;
  height: 10px;
  background: var(--brass);
}

.mark__text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.06em;
}

.eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--paper-dim);
}

.card {
  background: var(--blueprint-800);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
}

.hidden { display: none !important; }

.title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  line-height: 1.3;
  margin: 0 0 12px;
}

.subtitle {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  margin: 0 0 8px;
}

.body-text {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--paper-dim);
  margin: 0 0 24px;
}

.body-text--muted {
  margin-bottom: 16px;
}

.btn {
  width: 100%;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14.5px;
  padding: 13px 18px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: filter 0.15s ease, background 0.15s ease;
}

.btn--primary {
  background: var(--brass);
  color: var(--blueprint-900);
}
.btn--primary:hover:not(:disabled) { filter: brightness(1.08); }
.btn--primary:disabled { opacity: 0.5; cursor: default; }

.btn--ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--paper-dim);
  width: auto;
}
.btn--ghost:hover { border-color: var(--paper-dim); color: var(--paper); }

.btn--small {
  padding: 8px 12px;
  font-size: 13px;
}

.btn:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 2px;
}

.user-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.user-name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
}

.user-upn {
  margin: 2px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--paper-dim);
}

.divider {
  height: 1px;
  background: var(--line);
  margin: 22px 0;
}

.status-block {
  margin-bottom: 24px;
}

.status-block__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.seats-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.label {
  font-size: 13px;
  color: var(--paper-dim);
}

.pill {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 999px;
  letter-spacing: 0.03em;
}

.pill--on {
  background: rgba(111, 191, 139, 0.16);
  color: var(--ok);
}

.pill--off {
  background: rgba(244, 241, 234, 0.1);
  color: var(--paper-dim);
}

.seats__label {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--paper-dim);
  margin-bottom: 8px;
}

.mono { font-family: var(--font-mono); color: var(--paper); }

.seats__bar {
  display: flex;
  gap: 4px;
  height: 10px;
  margin-bottom: 24px;
}

.seats__cell {
  flex: 1;
  background: rgba(244, 241, 234, 0.1);
  border-radius: 2px;
}

.seats__cell.filled {
  background: var(--brass);
}

.seat-list {
  list-style: none;
  margin: 0 0 4px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.seat {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: rgba(244, 241, 234, 0.04);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.seat--taken {
  justify-content: space-between;
}

.seat__info { min-width: 0; }

.seat__name {
  margin: 0;
  font-size: 13.5px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.seat__email {
  margin: 2px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--paper-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.seat--free {
  border-style: dashed;
  flex-wrap: wrap;
}

.seat__search {
  position: relative;
  flex: 1 1 180px;
  min-width: 0;
}

.seat__input {
  width: 100%;
  background: rgba(244, 241, 234, 0.06);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 13px;
  padding: 8px 10px;
}

.seat__input:focus {
  outline: none;
  border-color: var(--brass);
}

.seat__dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  z-index: 5;
  list-style: none;
  margin: 0;
  padding: 4px;
  background: var(--blueprint-700);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  max-height: 180px;
  overflow-y: auto;
}

.seat__dropdown li {
  padding: 8px 10px;
  font-size: 13px;
  border-radius: 2px;
  cursor: pointer;
}

.seat__dropdown li:hover {
  background: rgba(244, 241, 234, 0.08);
}

.seat__action {
  width: auto;
  flex-shrink: 0;
}

.seat__me {
  width: auto;
  flex-shrink: 0;
}

.msg {
  min-height: 18px;
  font-size: 13px;
  margin: 12px 0 0;
  color: var(--danger);
}

.msg.msg--ok { color: var(--ok); }

.holder-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.holder-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 13.5px;
  padding: 10px 12px;
  background: rgba(244, 241, 234, 0.05);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.holder-list li span:last-child {
  font-family: var(--font-mono);
  color: var(--paper-dim);
  font-size: 12.5px;
}

#view-admin {
  margin-top: 16px;
}

@media (max-width: 480px) {
  .card { padding: 24px; }
}