/* ============================================================
   JAZZIN ライブ運営OS — design system
   UI思想: Apple級の静けさ × Notion級整理感 × 空港チェックインUI
   ============================================================ */

:root {
  --c-bg:         #0a0a0a;
  --c-bg2:        #111111;
  --c-bg3:        #191919;
  --c-surface:    #1c1c1c;
  --c-border:     rgba(255,255,255,0.08);
  --c-border2:    rgba(255,255,255,0.14);
  --c-text:       #f0efec;
  --c-muted:      #888884;
  --c-dim:        #555553;

  --c-accent:     #e8c97a;     /* jazz gold */
  --c-accent2:    #d4a843;
  --c-green:      #4caf6e;
  --c-red:        #e05252;
  --c-blue:       #5b9cf6;

  --seat-sz:      36px;
  --seat-gap:     5px;
  --radius:       8px;
  --radius-lg:    14px;
  --transition:   120ms ease;

  font-family: 'SF Pro Display', 'Hiragino Sans', 'Yu Gothic UI', -apple-system, sans-serif;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--c-bg);
  color: var(--c-text);
  min-height: 100dvh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ─────────────────────────────────────────── */
h1 { font-size: 2rem; font-weight: 600; letter-spacing: -0.02em; }
h2 { font-size: 1.4rem; font-weight: 500; letter-spacing: -0.01em; }
h3 { font-size: 1.1rem; font-weight: 500; }
p  { color: var(--c-muted); }

/* ── Layout ─────────────────────────────────────────────── */
.container { max-width: 900px; margin: 0 auto; padding: 0 1.25rem; }
.page { padding: 2rem 0 4rem; }

/* ── Header ─────────────────────────────────────────────── */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--c-border);
}
.header-inner {
  max-width: 900px; margin: 0 auto;
  padding: 0 1.25rem;
  height: 54px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo {
  font-size: 1.05rem; font-weight: 700;
  letter-spacing: 0.12em; color: var(--c-accent);
  text-decoration: none;
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 0.55rem 1.2rem;
  border-radius: var(--radius);
  font-size: 0.875rem; font-weight: 500;
  cursor: pointer; border: none;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--c-accent); color: #0a0a0a;
}
.btn-primary:hover { background: var(--c-accent2); }
.btn-primary:disabled { background: var(--c-dim); color: var(--c-bg); cursor: not-allowed; }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--c-border2);
  color: var(--c-muted);
}
.btn-ghost:hover { border-color: var(--c-text); color: var(--c-text); background: var(--c-surface); }

.btn-danger { background: var(--c-red); color: #fff; }
.btn-success { background: var(--c-green); color: #fff; }
.btn-lg { padding: 0.8rem 1.8rem; font-size: 1rem; }
.btn-full { width: 100%; }
.btn-sm { padding: 0.35rem 0.8rem; font-size: 0.8rem; }

/* ── Cards ───────────────────────────────────────────────── */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.card-body { padding: 1.25rem; }

/* ── Event card (映画アプリ風) ───────────────────────────── */
.event-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: border-color 200ms, transform 200ms;
  cursor: pointer;
  text-decoration: none; color: inherit;
}
.event-card:hover {
  border-color: var(--c-border2);
  transform: translateY(-2px);
}
.event-card-img {
  width: 100%; aspect-ratio: 16/9; object-fit: cover;
  background: var(--c-bg3);
}
.event-card-img-placeholder {
  width: 100%; aspect-ratio: 16/9;
  background: var(--c-bg3);
  display: flex; align-items: center; justify-content: center;
}
.event-card-body { padding: 1rem 1.1rem 1.2rem; flex: 1; display: flex; flex-direction: column; gap: 0.35rem; }
.event-card-title { font-size: 1rem; font-weight: 600; color: var(--c-text); }
.event-card-meta { font-size: 0.8rem; color: var(--c-muted); }
.event-card-footer {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: auto; padding-top: 0.6rem;
}

/* ── Badges ──────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.04em;
}
.badge-ok   { background: rgba(76,175,110,0.15); color: var(--c-green); }
.badge-few  { background: rgba(232,201,122,0.15); color: var(--c-accent); }
.badge-sold { background: rgba(224,82,82,0.12); color: var(--c-red); }
.badge-admin { background: rgba(91,156,246,0.15); color: var(--c-blue); }

/* ── Seat map ────────────────────────────────────────────── */
.stage-label {
  text-align: center;
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.2em; color: var(--c-dim);
  padding: 0.4rem 0;
  border: 1px solid var(--c-border);
  border-radius: 4px;
  margin-bottom: 1.2rem;
  background: var(--c-bg3);
}
.seat-grid {
  display: grid;
  gap: var(--seat-gap);
}
.seat {
  width: var(--seat-sz); height: var(--seat-sz);
  border-radius: 5px;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.6rem; font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  user-select: none;
  border: 1px solid transparent;
}
.seat[data-status="available"] {
  background: var(--c-bg3);
  border-color: var(--c-border2);
  color: var(--c-muted);
}
.seat[data-status="available"]:hover {
  background: rgba(232,201,122,0.15);
  border-color: var(--c-accent);
  color: var(--c-accent);
}
.seat[data-status="selected"] {
  background: var(--c-accent);
  border-color: var(--c-accent2);
  color: #0a0a0a;
}
.seat[data-status="locked"] {
  background: rgba(232,201,122,0.06);
  border-color: rgba(232,201,122,0.2);
  color: var(--c-dim);
  cursor: not-allowed;
}
.seat[data-status="reserved"] {
  background: rgba(224,82,82,0.12);
  border-color: rgba(224,82,82,0.25);
  color: var(--c-red);
  cursor: not-allowed;
}
.seat[data-status="checked_in"] {
  background: rgba(76,175,110,0.12);
  border-color: rgba(76,175,110,0.25);
  color: var(--c-green);
  cursor: not-allowed;
}
.seat-legend {
  display: flex; gap: 1.2rem; flex-wrap: wrap;
  margin-top: 1rem; font-size: 0.75rem; color: var(--c-muted);
}
.seat-legend-item { display: flex; align-items: center; gap: 5px; }
.seat-legend-dot {
  width: 10px; height: 10px; border-radius: 2px;
}

/* ── Forms ───────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-label { font-size: 0.8rem; font-weight: 500; color: var(--c-muted); }
.form-input {
  background: var(--c-bg2);
  border: 1px solid var(--c-border2);
  border-radius: var(--radius);
  padding: 0.6rem 0.85rem;
  color: var(--c-text);
  font-size: 0.95rem;
  transition: var(--transition);
  width: 100%;
  font-family: inherit;
}
.form-input:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(232,201,122,0.12);
}
.form-input::placeholder { color: var(--c-dim); }

/* ── Checkin UI ──────────────────────────────────────────── */
.checkin-result {
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  border: 1px solid var(--c-border);
  background: var(--c-surface);
}
.checkin-name {
  font-size: 2rem; font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--c-text);
}
.checkin-seats {
  font-size: 1.2rem; font-weight: 600;
  color: var(--c-accent);
}
.checkin-price {
  font-size: 1.8rem; font-weight: 700;
  color: var(--c-text);
}
.checkin-complete {
  background: rgba(76,175,110,0.1);
  border-color: rgba(76,175,110,0.3);
}
.checkin-error {
  background: rgba(224,82,82,0.08);
  border-color: rgba(224,82,82,0.3);
}

/* ── Divider ─────────────────────────────────────────────── */
.divider { height: 1px; background: var(--c-border); margin: 1rem 0; }

/* ── Grid ────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.events-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; }

/* ── Loading ─────────────────────────────────────────────── */
.skeleton {
  background: var(--c-surface);
  border-radius: var(--radius);
  animation: pulse 1.5s infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--c-border2);
  border-top-color: var(--c-accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Toast ───────────────────────────────────────────────── */
#toast {
  position: fixed; bottom: 1.5rem; left: 50%; transform: translateX(-50%);
  background: var(--c-surface); border: 1px solid var(--c-border2);
  border-radius: var(--radius); padding: 0.65rem 1.2rem;
  font-size: 0.875rem; color: var(--c-text);
  opacity: 0; pointer-events: none;
  transition: opacity 200ms;
  z-index: 9999;
  white-space: nowrap;
}
#toast.show { opacity: 1; }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 640px) {
  h1 { font-size: 1.5rem; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  :root { --seat-sz: 30px; --seat-gap: 4px; }
}

/* ── QR container ────────────────────────────────────────── */
.qr-box {
  background: #fff;
  border-radius: var(--radius);
  display: inline-flex; padding: 12px;
}

/* ── Scrollbar ───────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--c-bg); }
::-webkit-scrollbar-thumb { background: var(--c-dim); border-radius: 3px; }