/* QuoRum — conference room booking */
/* Palette: deep navy base, electric cyan accent, slate midtones */

:root {
  --bg:          #0d1117;
  --surface:     #161b22;
  --surface2:    #21262d;
  --border:      #30363d;
  --text:        #e6edf3;
  --text-muted:  #8b949e;
  --accent:      #00d9ff;
  --accent-dim:  #0ea5c0;
  --success:     #3fb950;
  --warning:     #d29922;
  --danger:      #f85149;
  --radius:      6px;
  --font-mono:   'JetBrains Mono', 'Fira Mono', 'Cascadia Code', monospace;
  --font-ui:     'Inter', 'Segoe UI', system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Typography ─────────────────────────────────────────── */
h1 { font-size: 1.75rem; font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: 1.25rem; font-weight: 600; }
h3 { font-size: 1rem; font-weight: 600; }

.wordmark {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
  text-decoration: none;
}
.wordmark span { color: var(--accent); }

/* ── Layout ─────────────────────────────────────────────── */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.page-header {
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  margin-bottom: 2rem;
}

.page-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

main { padding-bottom: 4rem; }

/* ── Cards ──────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.card-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: opacity 0.15s, background 0.15s;
  font-family: var(--font-ui);
}
.btn:hover { opacity: 0.85; }
.btn:active { opacity: 0.7; }

.btn-primary {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}
.btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--border);
}
.btn-danger {
  background: transparent;
  color: var(--danger);
  border-color: var(--danger);
}
.btn-sm { padding: 0.3rem 0.7rem; font-size: 0.8rem; }
.btn-block { width: 100%; justify-content: center; }

/* ── Forms ───────────────────────────────────────────────── */
.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
input, select, textarea {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
  font-family: var(--font-ui);
  transition: border-color 0.15s;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}
input[type="date"] { color-scheme: dark; }

/* ── UUID display ────────────────────────────────────────── */
.uuid-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.2rem 0.5rem;
  letter-spacing: 0.02em;
}

.uuid-badge.admin {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Slot grid ───────────────────────────────────────────── */
.slot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 0.4rem;
  margin: 0.75rem 0;
}

.slot {
  padding: 0.4rem 0.25rem;
  text-align: center;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.1s, border-color 0.1s;
  user-select: none;
}
.slot.free { background: var(--surface2); color: var(--text); }
.slot.free:hover { border-color: var(--accent); color: var(--accent); }
.slot.booked {
  background: transparent;
  color: var(--text-muted);
  cursor: not-allowed;
  opacity: 0.4;
  text-decoration: line-through;
}
.slot.mine {
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  border-color: var(--accent);
  color: var(--accent);
  cursor: not-allowed;
}
.slot.selected {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
  font-weight: 600;
}

/* ── Room card ───────────────────────────────────────────── */
.room-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 0.75rem;
}
.room-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}
.room-name { font-weight: 600; font-size: 1rem; }
.room-meta { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.15rem; }
.capacity-pill {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  padding: 0.2rem 0.5rem;
  border-radius: 99px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  white-space: nowrap;
}

/* ── Table ───────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}
td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--surface2); }

/* ── Status badges ───────────────────────────────────────── */
.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 99px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.badge-success { background: color-mix(in srgb, var(--success) 20%, transparent); color: var(--success); }
.badge-warning { background: color-mix(in srgb, var(--warning) 20%, transparent); color: var(--warning); }
.badge-danger  { background: color-mix(in srgb, var(--danger) 20%, transparent);  color: var(--danger);  }
.badge-info    { background: color-mix(in srgb, var(--accent) 20%, transparent);  color: var(--accent);  }
.badge-muted   { background: var(--surface2); color: var(--text-muted); }

/* ── Validate result ─────────────────────────────────────── */
.validate-card {
  text-align: center;
  padding: 3rem 2rem;
  border-radius: var(--radius);
  border: 2px solid var(--border);
}
.validate-card.valid   { border-color: var(--success); }
.validate-card.invalid { border-color: var(--danger); }
.validate-card.active  { border-color: var(--accent); }

.validate-icon { font-size: 4rem; line-height: 1; margin-bottom: 1rem; }
.validate-status { font-size: 1.5rem; font-weight: 700; margin-bottom: 0.5rem; }
.validate-detail { color: var(--text-muted); font-size: 0.95rem; }
.validate-room {
  margin-top: 1.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent);
}

/* ── Scan landing ────────────────────────────────────────── */
.scan-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  text-align: center;
  gap: 1rem;
}
.scan-icon { font-size: 5rem; opacity: 0.3; }
.scan-hint { color: var(--text-muted); max-width: 380px; }

/* ── Alert ───────────────────────────────────────────────── */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  border: 1px solid transparent;
}
.alert-error   { background: color-mix(in srgb, var(--danger) 15%, transparent);  border-color: var(--danger);  color: var(--danger); }
.alert-success { background: color-mix(in srgb, var(--success) 15%, transparent); border-color: var(--success); color: var(--success); }
.alert-info    { background: color-mix(in srgb, var(--accent) 10%, transparent);  border-color: var(--accent);  color: var(--accent); }

/* ── Tabs ────────────────────────────────────────────────── */
.tabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem; }
.tab-btn {
  padding: 0.6rem 1.2rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  margin-bottom: -1px;
  font-family: var(--font-ui);
  transition: color 0.15s;
}
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-btn:hover:not(.active) { color: var(--text); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Misc ────────────────────────────────────────────────── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.gap-1 { gap: 0.5rem; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }

/* ── QR Scanner ──────────────────────────────────────────── */
.input-scan-group { display: flex; gap: 0.5rem; }
.input-scan-group input { flex: 1; width: auto; }

.btn-scan {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 0.65rem;
  background: var(--surface2);
  color: var(--accent);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color 0.15s;
  font-family: var(--font-ui);
}
.btn-scan:hover { border-color: var(--accent); }

#qr-modal { display: none; }
#qr-modal[open] { display: block; }

.qr-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: 100;
}

.qr-box {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 101;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: min(480px, calc(100vw - 2rem));
  overflow: hidden;
}

.qr-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
  font-weight: 500;
}

.qr-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 0.2rem 0.5rem;
  line-height: 1;
  font-family: var(--font-ui);
}
.qr-close:hover { color: var(--text); }

.qr-body { position: relative; background: #000; line-height: 0; }

#qr-video {
  display: block;
  width: 100%;
  max-height: 340px;
  object-fit: cover;
}

#qr-canvas { display: none; }

#qr-status {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.4rem 0.75rem;
  background: rgba(0, 0, 0, 0.6);
  color: var(--text-muted);
  font-size: 0.78rem;
  text-align: center;
  line-height: 1.4;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 600px) {
  h1 { font-size: 1.35rem; }
  .slot-grid { grid-template-columns: repeat(auto-fill, minmax(68px, 1fr)); }
  .hide-mobile { display: none; }
}