/* Design language reference: DESIGN.md (Airbnb) — colors, radii, spacing and
   shadow tokens adapted from that palette for this internal admin/reception tool. */
:root {
  color-scheme: light;

  --color-bg: #f7f7f7;
  --color-surface: #ffffff;
  --color-surface-strong: #f2f2f2;

  --color-primary: #ff385c;
  --color-primary-active: #e00b41;
  --color-primary-disabled: #ffd1da;
  --color-on-primary: #ffffff;

  --color-ink: #222222;
  --color-body: #3f3f3f;
  --color-muted: #6a6a6a;
  --color-muted-soft: #929292;

  --color-hairline: #dddddd;
  --color-hairline-soft: #ebebeb;
  --color-border-strong: #c1c1c1;

  --color-success: #1f9d55;
  --color-success-bg: #e7f6ec;
  --color-warn: #b45309;
  --color-warn-bg: #fff4e5;
  --color-danger: #c13515;
  --color-danger-bg: #fdecea;

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-base: 16px;
  --space-lg: 24px;
  --space-xl: 32px;

  --shadow-card: rgba(0, 0, 0, 0.02) 0 0 0 1px, rgba(0, 0, 0, 0.04) 0 2px 6px 0,
    rgba(0, 0, 0, 0.08) 0 4px 8px 0;

  /* Latin text renders in Inter (closest open substitute for Airbnb Cereal);
     Japanese glyphs fall through to the system Japanese stack per-character. */
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", "Yu Gothic", "Noto Sans JP", system-ui, sans-serif;

  /* legacy aliases kept so any inline references still resolve */
  --color-border: var(--color-hairline);
  --color-text: var(--color-ink);
  --color-primary-dark: var(--color-primary-active);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

header.app-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-hairline);
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 10;
}

header.app-header h1 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0;
  color: var(--color-ink);
  letter-spacing: -0.01em;
}

header.app-header nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

header.app-header nav a {
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--radius-full);
  transition: background-color 0.15s ease, color 0.15s ease;
}

header.app-header nav a:hover {
  background: var(--color-surface-strong);
  color: var(--color-ink);
}

header.app-header nav a.active {
  background: var(--color-primary);
  color: var(--color-on-primary);
}

header.app-header nav a.active:hover {
  background: var(--color-primary-active);
  color: var(--color-on-primary);
}

main.container {
  max-width: 880px;
  margin: 40px auto;
  padding: 0 24px 64px;
}

main.container.wide {
  max-width: 1240px;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-hairline-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: var(--space-xl);
  margin-bottom: var(--space-lg);
}

h2 {
  margin-top: 0;
  font-weight: 600;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
  color: var(--color-ink);
}

h3 {
  font-weight: 600;
  color: var(--color-ink);
}

p {
  color: var(--color-body);
}

h4 {
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-ink);
  margin-bottom: 4px;
}

h4:not(:first-child) {
  margin-top: var(--space-lg);
}

code {
  background: var(--color-surface-strong);
  border-radius: var(--radius-xs);
  padding: 2px 6px;
  font-size: 0.9em;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

ol {
  color: var(--color-body);
  padding-left: 1.2em;
}

ol li {
  margin-bottom: 6px;
}

.hint {
  font-weight: 400;
  color: var(--color-muted);
  font-size: 0.85rem;
}

label {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--color-ink);
  margin-bottom: 6px;
  margin-top: var(--space-base);
}

label .hint {
  font-weight: 400;
  color: var(--color-muted);
  font-size: 0.85rem;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="password"],
input[type="search"],
select,
textarea {
  width: 100%;
  height: 48px;
  padding: 12px 14px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-ink);
  transition: border-color 0.15s ease;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border: 2px solid var(--color-ink);
  padding: 11px 13px;
}

textarea {
  height: auto;
  resize: vertical;
}

.member-row {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.member-row input {
  flex: 1;
}

button,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius-sm);
  padding: 13px 22px;
  height: 48px;
  font-size: 0.95rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  background: var(--color-primary);
  color: var(--color-on-primary);
  text-decoration: none;
  transition: background-color 0.15s ease;
}

button:hover,
.btn:hover {
  background: var(--color-primary-active);
}

button.secondary,
.btn.secondary {
  background: var(--color-surface);
  color: var(--color-ink);
  border: 1px solid var(--color-border-strong);
}

button.secondary:hover,
.btn.secondary:hover {
  background: var(--color-surface-strong);
}

button.danger {
  background: var(--color-surface);
  color: var(--color-danger);
  border: 1px solid var(--color-danger-bg);
}

button.danger:hover {
  background: var(--color-danger-bg);
}

.actions {
  margin-top: var(--space-lg);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.alert {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-base);
  font-size: 0.92rem;
}

.alert.error {
  background: var(--color-danger-bg);
  color: var(--color-danger);
  border: 1px solid #f6c4c0;
}

.alert.success {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid #bfe6cc;
}

.intent-banner {
  border-width: 1px;
  border-style: solid;
}

.intent-banner.warn { background: var(--color-warn-bg); color: var(--color-warn); border-color: var(--color-warn); }
.intent-banner.danger { background: var(--color-danger-bg); color: var(--color-danger); border-color: var(--color-danger); }
.intent-banner.ok { background: var(--color-success-bg); color: var(--color-success); border-color: var(--color-success); }
.intent-banner.muted { background: var(--color-surface-strong); color: var(--color-body); border-color: var(--color-hairline-soft); }

.intent-highlight {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-md);
  padding: var(--space-base);
}

.quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.action-tile {
  display: block;
  text-decoration: none;
  background: var(--color-surface);
  border: 1px solid var(--color-hairline-soft);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.action-tile:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-card);
  transform: translateY(-1px);
}

.action-tile .action-title {
  display: block;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.action-tile .action-hint {
  display: block;
  font-size: 0.82rem;
  color: var(--color-muted);
}

.action-tile.warn { border-color: var(--color-warn); background: var(--color-warn-bg); }
.action-tile.warn .action-title { color: var(--color-warn); }
.action-tile.danger { border-color: var(--color-danger); background: var(--color-danger-bg); }
.action-tile.danger .action-title { color: var(--color-danger); }
.action-tile.ok { border-color: var(--color-success); background: var(--color-success-bg); }
.action-tile.ok .action-title { color: var(--color-success); }

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-hairline-soft);
  font-size: 0.92rem;
}

th {
  color: var(--color-muted);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
}

.badge.ok { background: var(--color-success-bg); color: var(--color-success); }
.badge.warn { background: var(--color-warn-bg); color: var(--color-warn); }
.badge.full { background: var(--color-danger-bg); color: var(--color-danger); }
.badge.muted { background: var(--color-surface-strong); color: var(--color-muted); }

.reception-code {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.stat-number {
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

.stat-number.huge {
  font-size: 6rem;
  line-height: 1;
}

.occupancy-panel {
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
}

.occupancy-panel .stat-max {
  font-size: 1.6rem;
  color: var(--color-muted);
}

.occupancy-panel .badge {
  font-size: 1rem;
  padding: 6px 18px;
  margin-top: var(--space-sm);
}