/* Studio Pulse — 練室 · Demo */
:root {
  --bg: #0a0a0a;
  --bg-elevated: #141414;
  --bg-card: #1a1a1a;
  --border: #2a2a2a;
  --border-strong: #3a3a3a;
  --text: #f5f5f5;
  --text-muted: #a0a0a0;
  --text-dim: #6b6b6b;
  --accent: #ffffff;
  --accent-inv: #0a0a0a;
  --success: #e8e8e8;
  --danger: #888;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(0,0,0,0.45);
  --font: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", system-ui, -apple-system, sans-serif;
  --mono: "SF Mono", "Menlo", "Consolas", monospace;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

button, input, select {
  font: inherit;
  color: inherit;
}

img { max-width: 100%; display: block; }

.container {
  width: min(100% - 2rem, 720px);
  margin-inline: auto;
}

/* —— Header —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(10,10,10,0.85);
  border-bottom: 1px solid var(--border);
}

.site-header .inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  width: min(100% - 2rem, 720px);
  margin-inline: auto;
}

.logo {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.logo-zh {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.08em;
}

.logo-en {
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.header-badge {
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--border-strong);
  padding: 0.3rem 0.55rem;
  border-radius: 999px;
  color: var(--text-muted);
}

/* —— Hero —— */
.hero {
  padding: 2.75rem 0 2rem;
  text-align: center;
}

.hero-kicker {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  border: 1px solid var(--border);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1.25rem;
}

.hero h1 {
  font-size: clamp(1.65rem, 5.5vw, 2.35rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.02em;
  margin-bottom: 0.65rem;
}

.hero h1 .en {
  display: block;
  font-size: 0.55em;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  margin-top: 0.35rem;
}

.hero-sub {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 28rem;
  margin: 0 auto 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  border: none;
  cursor: pointer;
  border-radius: 999px;
  padding: 0.75rem 1.4rem;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s ease, opacity 0.15s ease, background 0.15s ease;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

.btn-primary {
  background: var(--accent);
  color: var(--accent-inv);
}

.btn-primary:hover:not(:disabled) { opacity: 0.9; }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border-strong);
  color: var(--text);
}

.btn-ghost:hover:not(:disabled) { background: var(--bg-elevated); }

.btn-block { width: 100%; }

/* —— Sections —— */
section {
  padding: 1.75rem 0;
}

.section-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.section-title .en {
  font-weight: 500;
  color: var(--text-muted);
  font-size: 0.8em;
  margin-left: 0.35rem;
}

.section-desc {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 1.1rem;
}

/* —— Room cards —— */
.room-grid {
  display: grid;
  gap: 0.75rem;
}

@media (min-width: 560px) {
  .room-grid { grid-template-columns: repeat(3, 1fr); }
}

.room-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1rem;
  transition: border-color 0.15s ease;
}

.room-card:hover { border-color: var(--border-strong); }

.room-icon {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
  color: var(--text-muted);
}

.room-name {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.15rem;
}

.room-name .en {
  font-weight: 500;
  color: var(--text-muted);
  font-size: 0.8em;
}

.room-rate {
  font-size: 1.25rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  margin: 0.5rem 0 0.25rem;
}

.room-rate span {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
}

.room-note {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* —— Pricing table —— */
.pricing-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.pricing-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  align-items: center;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
}

.pricing-row:last-child { border-bottom: none; }

.pricing-row .label { color: var(--text); }
.pricing-row .label .en {
  display: block;
  font-size: 0.75em;
  color: var(--text-dim);
  margin-top: 0.1rem;
}

.pricing-tag {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  white-space: nowrap;
}

.pricing-tag.down { background: #111; }
.pricing-tag.base { background: #1f1f1f; }
.pricing-tag.up { background: #2a2a2a; }

/* —— Package chips —— */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.85rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--border-strong);
  background: var(--bg-elevated);
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  font-size: 0.8rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.chip:hover { border-color: #555; }
.chip.active {
  background: var(--accent);
  color: var(--accent-inv);
  border-color: var(--accent);
}

.chip .price {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* —— Booking form —— */
.booking-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1rem 1.4rem;
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 1.1rem;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 0.45rem;
}

.form-label .en {
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 0.3rem;
}

.form-control {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.85rem;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.form-control:focus {
  border-color: #666;
}

select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%23a0a0a0' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.85rem center;
  padding-right: 2.2rem;
}

.seg-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(4.2rem, 1fr));
  gap: 0.4rem;
}

.seg-btn {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.3rem;
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  cursor: pointer;
  text-align: center;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}

.seg-btn:hover:not(:disabled):not(.taken) {
  border-color: #555;
}

.seg-btn.active {
  background: var(--accent);
  color: var(--accent-inv);
  border-color: var(--accent);
  font-weight: 700;
}

.seg-btn.taken {
  opacity: 0.35;
  text-decoration: line-through;
  cursor: not-allowed;
}

.seg-btn:disabled { opacity: 0.3; cursor: not-allowed; }

.room-type-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.45rem;
}

.room-type-btn {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.4rem;
  cursor: pointer;
  text-align: center;
  transition: background 0.12s, border-color 0.12s;
}

.room-type-btn .zh { display: block; font-weight: 600; font-size: 0.9rem; }
.room-type-btn .en { display: block; font-size: 0.65rem; color: var(--text-muted); margin-top: 0.15rem; }
.room-type-btn .rate { display: block; font-size: 0.75rem; font-variant-numeric: tabular-nums; color: var(--text-dim); margin-top: 0.25rem; }

.room-type-btn.active {
  background: var(--accent);
  color: var(--accent-inv);
  border-color: var(--accent);
}

.room-type-btn.active .en,
.room-type-btn.active .rate { color: rgba(0,0,0,0.55); }

.duration-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.4rem;
}

/* —— Live price —— */
.price-box {
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 1rem;
  margin: 1.25rem 0 1rem;
}

.price-box-title {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.65rem;
}

.price-lines {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.85rem;
}

.price-line {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--text-muted);
}

.price-line strong {
  color: var(--text);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
}

.price-total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.price-total .label {
  font-weight: 600;
  font-size: 0.9rem;
}

.price-total .amount {
  font-size: 1.55rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.price-hint {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 0.55rem;
}

/* —— Success —— */
.success-view {
  display: none;
  text-align: center;
  padding: 2rem 0.5rem 1rem;
}

.success-view.visible { display: block; }
.booking-form.hidden { display: none; }

.success-icon {
  width: 64px;
  height: 64px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  display: grid;
  place-items: center;
  margin: 0 auto 1.25rem;
  font-size: 1.5rem;
}

.success-view h2 {
  font-size: 1.35rem;
  margin-bottom: 0.4rem;
}

.success-view .sub {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.booking-code-box {
  background: var(--bg);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1rem;
}

.booking-code-box .label {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.booking-code {
  font-family: var(--mono);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.lock-note {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  text-align: left;
}

.lock-note strong {
  color: var(--text);
  display: block;
  margin-bottom: 0.2rem;
}

.success-meta {
  text-align: left;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.success-meta dt {
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-top: 0.55rem;
}

.success-meta dd {
  color: var(--text);
  font-weight: 600;
}

/* —— Footer —— */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0 2.5rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.75rem;
  margin-top: 1rem;
}

.site-footer .brand {
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

/* —— Utils —— */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

.date-scroll {
  display: flex;
  gap: 0.4rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.date-btn {
  flex: 0 0 auto;
  min-width: 3.6rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.45rem;
  cursor: pointer;
  text-align: center;
  transition: background 0.12s, border-color 0.12s;
}

.date-btn .dow {
  display: block;
  font-size: 0.65rem;
  color: var(--text-muted);
  margin-bottom: 0.15rem;
}

.date-btn .dom {
  display: block;
  font-weight: 700;
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
}

.date-btn .mon {
  display: block;
  font-size: 0.6rem;
  color: var(--text-dim);
  margin-top: 0.1rem;
}

.date-btn.weekend .dow { color: #ccc; }

.date-btn.active {
  background: var(--accent);
  color: var(--accent-inv);
  border-color: var(--accent);
}

.date-btn.active .dow,
.date-btn.active .mon { color: rgba(0,0,0,0.5); }

.alert {
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  margin-bottom: 0.75rem;
  display: none;
}

.alert.visible { display: block; }