/* app-header.css (cmd-bar)
 * plateau-route-3d 共通ヘッダー
 * Design: 都市計画ノート — 端正・技術的・控えめな高級感
 */

/* ============================================================
   DESIGN TOKENS
   ============================================================ */

:root {
  --bg-deep:    #0a0e16;
  --bg-elev:    #11161e;
  --bg-elev-2:  #181f2b;
  --text:       #e8ecf2;
  --text-mu:    #a8b0bd;
  --text-fade:  #6b7280;
  --accent:       #6db8ff;
  --accent-bright: #92caff;
  --accent-deep:  #3b82f6;
  --border:          rgba(255,255,255,0.08);
  --border-strong:   rgba(255,255,255,0.18);
  --hover-bg:        rgba(255,255,255,0.06);
  --active-bg:       rgba(255,255,255,0.10);
  --focus-ring: 0 0 0 2px var(--accent-bright);
  --font-display: "Zen Kaku Gothic New", system-ui, sans-serif;
  --font-body:    "Zen Kaku Gothic New", system-ui, sans-serif;
  --font-mono:    "JetBrains Mono", "Menlo", monospace;
  --container-max: 1100px;
  --container-pad: clamp(20px, 4vw, 32px);
}

/* ============================================================
   SKIP LINK
   ============================================================ */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--bg-deep);
  padding: 8px 16px;
  font-weight: 600;
  z-index: 200;
  text-decoration: none;
}
.skip-link:focus { left: 0; }

/* ============================================================
   CMD-BAR
   ============================================================ */

.cmd-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 48px;
  padding: 0 var(--container-pad);
  background: rgba(10, 14, 22, 0.80);
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-body);
}

.cmd-bar__brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.01em;
  transition: color 0.15s;
}
.cmd-bar__brand:hover { color: var(--accent-bright); }
.cmd-bar__brand:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 4px;
}

.cmd-bar__mark {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
  flex-shrink: 0;
  animation: pulse 3s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(0.85); }
}
@media (prefers-reduced-motion: reduce) {
  .cmd-bar__mark { animation: none; }
}

.cmd-bar__nav {
  display: flex;
  align-items: center;
  gap: 4px;
  justify-self: center;
}

.cmd-tab {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-mu);
  text-decoration: none;
  border-radius: 999px;
  transition: color 0.15s, background 0.15s;
  cursor: pointer;
}
.cmd-tab:hover {
  color: var(--text);
  background: var(--hover-bg);
}
.cmd-tab[aria-current="page"] {
  color: var(--text);
  background: var(--active-bg);
}
.cmd-tab[data-tab="play"] {
  background: var(--accent);
  color: var(--bg-deep);
  font-weight: 600;
}
.cmd-tab[data-tab="play"]:hover {
  background: var(--accent-bright);
}
.cmd-tab:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.cmd-bar__lang {
  display: inline-flex;
  gap: 2px;
  justify-self: end;
  padding: 2px;
  border: 1px solid var(--border);
  border-radius: 6px;
}
.lang-pill {
  background: transparent;
  border: none;
  color: var(--text-mu);
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
}
.lang-pill[aria-pressed="true"] {
  background: var(--active-bg);
  color: var(--text);
}
.lang-pill:hover { color: var(--text); }
.lang-pill:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* ============================================================
   PAGE VISIBILITY — data-page + data-show
   ============================================================ */

body[data-page="play"]     [data-show]:not([data-show~="play"])     { display: none !important; }
body[data-page="overview"] [data-show]:not([data-show~="overview"]) { display: none !important; }
body[data-page="board"]    [data-show]:not([data-show~="board"])    { display: none !important; }

/* ============================================================
   PLAY BANNER / BOARD BANNER (compact 160px headers)
   ============================================================ */

.play-banner,
.board-banner {
  padding: 48px 0 32px;
  border-bottom: 1px solid var(--border, rgba(255,255,255,0.08));
}
.play-banner__kicker,
.board-banner__kicker {
  display: inline-block;
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent, #6db8ff);
  margin-bottom: 12px;
}
.play-banner__title,
.board-banner__title {
  font-size: clamp(28px, 4vw, 40px);
  margin: 0 0 12px;
  font-weight: 700;
  color: var(--text, #e8ecf2);
}
.play-banner__lead,
.board-banner__lead {
  font-size: 15px;
  color: var(--text-mu, #a8b0bd);
  max-width: 60ch;
  margin: 0;
}

/* ============================================================
   MOBILE
   ============================================================ */

@media (max-width: 640px) {
  .cmd-bar {
    grid-template-columns: auto 1fr auto;
    gap: 8px;
    padding: 0 12px;
  }
  .cmd-bar__name { display: none; }
  .cmd-tab { padding: 0 10px; font-size: 12px; height: 28px; }
}

/* ============================================================
   LEGACY COMPAT — old .app-header classes (no-op)
   ============================================================ */

/* These selectors are kept as no-ops so any stale references don't crash. */
.app-header { display: none !important; }
.lang-toggle { display: none !important; }

/* ============================================================
   PLAY BANNER CTA
   ============================================================ */
.play-banner__cta {
  margin-top: 24px;
  display: flex;
  gap: 12px;
}