/* ============================================================
 * Kalimba Practice — warm wood theme
 * Palette: 暖色系ダーク (アイコンの木目調に合わせて)
 * ============================================================ */

:root {
  --bg:           #1d130b;    /* very dark warm brown */
  --surface:      #2a1d12;    /* card/panel surface */
  --surface-2:    #382617;
  --border:       rgba(245, 220, 180, 0.10);
  --border-2:     rgba(245, 220, 180, 0.18);

  --text:         #fbf0d8;    /* warm cream */
  --text-mute:    #c9b89a;    /* warm tan */
  --text-soft:    #9c8268;    /* muted warm */

  --wood-1:       #e8b06b;    /* light honey */
  --wood-2:       #c0884f;    /* mid wood */
  --wood-3:       #8a5a30;    /* dark wood */
  --wood-4:       #5a3818;    /* very dark wood (outline) */

  --honey:        #f3c66b;    /* falling note */
  --honey-2:      #d99a3a;
  --leaf:         #a8c97a;    /* hit color */
  --leaf-2:       #6da64a;
  --rose:         #e89aaa;    /* miss / accent */
  --rose-2:       #c87487;

  --tine-top:     #fbf6e8;    /* tine cream top */
  --tine-mid:     #e8dbbd;
  --tine-bot:     #6f4e30;    /* tine bottom dark wood */
}

/* ---------- Reset & base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  /* touch-action は継承されないので全要素に明示 (ダブルタップズーム抑止) */
  touch-action: manipulation;
}
html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overscroll-behavior: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}
body {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif;
  color: var(--text);
  background:
    radial-gradient(ellipse at top, #2c1d10 0%, var(--bg) 60%, #150c06 100%);
  display: flex;
  flex-direction: column;
  height: 100dvh;
  overflow: hidden;
}
button { font-family: inherit; }

/* ---------- 上部UIラッパー ---------- */
.top-ui {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
}

/* ---------- メニューボタン (横画面用) ---------- */
.menu-btn {
  display: none;
  position: fixed;
  top: max(8px, env(safe-area-inset-top));
  left: 12px;
  z-index: 60;
  background: rgba(232, 176, 107, 0.12);
  border: 1px solid rgba(232, 176, 107, 0.3);
  color: var(--text);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.menu-btn:active { transform: scale(0.94); }
.menu-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(20, 12, 6, 0.55);
  z-index: 40;
  opacity: 0;
  transition: opacity 0.2s ease;
}

/* ---------- Top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  padding-top: max(10px, env(safe-area-inset-top));
  flex-shrink: 0;
}
.title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text);
}
.title-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.icon-btn {
  background: rgba(232, 176, 107, 0.08);
  border: 1px solid var(--border);
  color: var(--text);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 16px;
  cursor: pointer;
}

/* ---------- Tabs ---------- */
.tabs {
  display: flex;
  gap: 6px;
  padding: 0 16px 8px;
  flex-shrink: 0;
}
.tab {
  flex: 1;
  background: rgba(232, 176, 107, 0.05);
  border: 1px solid var(--border);
  color: var(--text-mute);
  padding: 8px 0;
  border-radius: 999px;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s ease;
}
.tab.active {
  background: linear-gradient(135deg, var(--wood-1) 0%, var(--wood-2) 100%);
  color: #2a1808;
  border-color: transparent;
  font-weight: 700;
  box-shadow: 0 2px 10px rgba(192, 136, 79, 0.35);
}

/* ---------- Song bar ---------- */
.song-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 16px 8px;
  gap: 10px;
  flex-shrink: 0;
  transition: opacity 0.18s ease;
}
body.mode-free .song-bar {
  opacity: 0.35;
  pointer-events: none;
}
.song-info { flex: 1; min-width: 0; }
#songSelect {
  width: 100%;
  background: rgba(232, 176, 107, 0.06);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 13px;
}
.song-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}
.score {
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--text-mute);
  min-width: 56px;
  text-align: right;
}
.primary-btn {
  background: linear-gradient(135deg, var(--wood-1) 0%, var(--wood-2) 100%);
  border: none;
  color: #2a1808;
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 2px 10px rgba(192, 136, 79, 0.3);
}
.primary-btn:active { transform: translateY(1px); }
.primary-btn:disabled { opacity: 0.35; cursor: not-allowed; box-shadow: none; }
.primary-btn.full { width: 100%; padding: 12px; font-size: 14px; }

.primary-btn.outline {
  background: transparent;
  color: var(--wood-1);
  border: 1px solid var(--wood-1);
  box-shadow: none;
}
.primary-btn.outline:hover { background: rgba(232,176,107,0.08); }
.primary-btn.outline.active {
  background: linear-gradient(135deg, var(--wood-1) 0%, var(--wood-2) 100%);
  color: #2a1808;
  border-color: transparent;
  box-shadow: 0 2px 10px rgba(192, 136, 79, 0.3);
}

/* ---------- Play area ---------- */
.play-area {
  flex: 1;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
body.mode-song .play-area { justify-content: flex-end; }

.notes-track {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 2;
}
.falling-note {
  position: absolute;
  top: 0;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--honey) 0%, var(--honey-2) 100%);
  box-shadow:
    0 0 16px rgba(243, 198, 107, 0.45),
    inset 0 1px 0 rgba(255,255,255,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: #4a2e00;
  will-change: transform;
}
.falling-note.hit {
  background: linear-gradient(180deg, var(--leaf) 0%, var(--leaf-2) 100%);
  box-shadow: 0 0 24px rgba(168, 201, 122, 0.7);
  animation: hit-pop 0.3s ease forwards;
}
.falling-note.miss {
  background: linear-gradient(180deg, var(--rose) 0%, var(--rose-2) 100%);
  opacity: 0.5;
}
@keyframes hit-pop {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.25); }
  100% { transform: scale(0); opacity: 0; }
}

.hit-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(232,176,107,0.55), transparent);
  pointer-events: none;
  z-index: 3;
}
body.mode-free .hit-line,
body.mode-free .notes-track { display: none; }

.overlay-msg {
  position: absolute;
  top: 22%;
  left: 50%;
  transform: translateX(-50%);
  font-size: 28px;
  font-weight: 700;
  pointer-events: none;
  opacity: 0;
  z-index: 5;
  text-shadow: 0 2px 8px rgba(0,0,0,0.5);
}
.overlay-msg.show { animation: msg-pop 0.6s ease forwards; }
.overlay-msg.perfect { color: var(--honey); }
.overlay-msg.good    { color: var(--leaf); }
.overlay-msg.miss    { color: var(--rose); }
@keyframes msg-pop {
  0%   { opacity: 0; transform: translateX(-50%) scale(0.8); }
  20%  { opacity: 1; transform: translateX(-50%) scale(1.05); }
  80%  { opacity: 1; transform: translateX(-50%) scale(1); }
  100% { opacity: 0; transform: translateX(-50%) scale(1); }
}

/* ---------- Kalimba (wooden body, アイコン準拠) ---------- */
.kalimba-wrap {
  flex: 1;
  display: flex;
  align-items: stretch;
  justify-content: center;
  padding: 12px 12px max(16px, env(safe-area-inset-bottom));
  z-index: 4;
  min-height: 0;
}
body.mode-song .kalimba-wrap { flex: 0 0 38vh; }
@media (orientation: landscape) and (max-height: 480px) {
  body.mode-song .kalimba-wrap { flex: 0 0 50vh; }
}

.kalimba {
  position: relative;
  flex: 1;
  width: 100%;
  max-width: 1000px;
  display: flex;
  align-items: flex-start;          /* 上端揃え (中央が下に伸びる) */
  justify-content: center;
  gap: 5px;
  padding: 22px 18px 64px;
  touch-action: none;               /* スワイプでスクロール/ズームを抑制 */
  background:
    radial-gradient(ellipse at 50% 25%, rgba(255,235,200,0.18) 0%, transparent 55%),
    linear-gradient(180deg, var(--wood-1) 0%, var(--wood-2) 45%, var(--wood-3) 90%, #6b4220 100%);
  border-radius: 28px 28px 22px 22px / 28px 28px 32px 32px;
  box-shadow:
    inset 0 4px 6px rgba(255,235,200,0.25),
    inset 0 -10px 20px rgba(0,0,0,0.3),
    0 14px 32px rgba(0,0,0,0.55);
  overflow: hidden;
  border: 2px solid var(--wood-4);
}
/* 木目テクスチャ */
.kalimba::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(90, 56, 24, 0.07) 0px,
    rgba(90, 56, 24, 0.07) 1px,
    transparent 1px,
    transparent 9px
  );
  pointer-events: none;
}
/* ハート型サウンドホール (アイコン準拠) — テキスト変異形セレクタで絵文字化を抑制 */
.kalimba::after {
  content: '\2665\FE0E';
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 30px;
  line-height: 1;
  color: #2a1808;
  font-variant-emoji: text;
  text-shadow:
    0 -1px 0 rgba(0,0,0,0.6),
    0 1px 0 rgba(255,235,200,0.18);
  pointer-events: none;
  z-index: 1;
}

/* ---------- Tines (アイコンの白い舌) ---------- */
.tine {
  position: relative;
  flex: 1 1 0;
  min-width: 0;
  max-width: 38px;
  background:
    linear-gradient(180deg,
      var(--tine-top) 0%,
      #f3ebd4 35%,
      var(--tine-mid) 70%,
      var(--tine-bot) 92%,
      #4f361b 100%);
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.06s ease, filter 0.06s ease, box-shadow 0.18s ease;
  box-shadow:
    inset 0 2px 0 rgba(255,255,255,0.7),
    inset 0 -2px 0 rgba(0,0,0,0.15),
    0 3px 6px rgba(0,0,0,0.3);
  outline: 1.5px solid rgba(60, 36, 16, 0.5);  /* アイコンの濃い茶色のアウトライン */
  outline-offset: -1px;
}
.tine:hover { filter: brightness(1.04); }
.tine.pressed,
.tine:active {
  transform: translateY(3px) scaleY(0.99);
  filter: brightness(0.92);
}
.tine.glow {
  box-shadow:
    inset 0 2px 0 rgba(255,255,255,0.7),
    0 0 22px 5px rgba(243, 198, 107, 0.85);
}

/* ---------- Tine labels ---------- */
.tine .key-hint {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  font-style: italic;
  font-weight: 700;
  color: rgba(60, 36, 16, 0.55);
  pointer-events: none;
  line-height: 1;
}
@media (hover: none) and (pointer: coarse) {
  .tine .key-hint { display: none; }
}

.tine .label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none;
  color: #3d2817;
  white-space: nowrap;
}
.tine .label .num {
  font-size: clamp(11px, 2.6vmin, 14px);
  font-weight: 800;
  line-height: 1;
}
.tine .label .dots {
  font-size: 9px;
  line-height: 0.55;
  letter-spacing: 2px;
  height: 7px;
  margin-bottom: 1px;
  color: #3d2817;
}
.tine .label .dots:empty { display: none; }

/* ---------- Modal ---------- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(20, 12, 6, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}
.modal[hidden] { display: none; }
.modal-card {
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: 18px;
  padding: 22px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}
.modal-card h2 {
  margin: 0 0 16px;
  font-size: 18px;
  color: var(--text);
}

.start-card { text-align: center; }
.start-card p { color: var(--text-mute); font-size: 13px; line-height: 1.6; }
.start-card h2 {
  margin: 4px 0 6px;
  font-size: 22px;
  letter-spacing: 0.02em;
}
.start-card .tagline {
  margin: 0 0 16px;
  color: var(--text-soft);
  font-size: 13px;
}
.hero-icon {
  display: block;
  width: 120px;
  height: 120px;
  margin: 0 auto 14px;
  border-radius: 26px;
  box-shadow:
    0 12px 28px rgba(0,0,0,0.5),
    0 2px 0 rgba(255,235,200,0.06) inset;
}
.feature-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 14px 16px;
  text-align: left;
  background: rgba(232, 176, 107, 0.06);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.feature-list li {
  font-size: 13px;
  color: var(--text-mute);
  display: flex;
  align-items: center;
  gap: 10px;
}
.feature-list .bullet {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: linear-gradient(135deg, var(--wood-1) 0%, var(--wood-2) 100%);
  color: #2a1808;
  border-radius: 50%;
  font-weight: 700;
  font-size: 12px;
  flex-shrink: 0;
}
.muted { color: var(--text-soft); }
.small { font-size: 11px; }

.start-card .credits {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: 10px;
  line-height: 1.5;
}
.start-card .credits a {
  color: var(--text-mute);
  text-decoration: none;
}
.start-card .credits a:hover { color: var(--text); }

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 0;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}
.setting-row:first-of-type { border-top: none; }
.setting-row label:first-child {
  font-size: 13px;
  color: var(--text-mute);
  flex: 1 0 100%;
  margin-bottom: 6px;
}
.setting-row input[type="range"] { flex: 1; accent-color: var(--wood-1); }
.range-val {
  font-size: 12px;
  color: var(--text-mute);
  min-width: 50px;
  text-align: right;
}

.seg {
  display: flex;
  background: rgba(232, 176, 107, 0.05);
  border-radius: 999px;
  padding: 3px;
  flex: 1;
}
.seg button {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-mute);
  padding: 6px 8px;
  border-radius: 999px;
  font-size: 12px;
  cursor: pointer;
}
.seg button.active {
  background: linear-gradient(135deg, var(--wood-1) 0%, var(--wood-2) 100%);
  color: #2a1808;
  font-weight: 700;
}

.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
}
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute;
  inset: 0;
  background: rgba(245, 220, 180, 0.15);
  border-radius: 999px;
  transition: 0.2s;
}
.slider::before {
  content: '';
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  top: 3px;
  background: #fff;
  border-radius: 50%;
  transition: 0.2s;
}
.switch input:checked + .slider {
  background: linear-gradient(135deg, var(--wood-1) 0%, var(--wood-2) 100%);
}
.switch input:checked + .slider::before { transform: translateX(20px); }

/* ---------- Landscape (横画面: 上部UI を JS で隠す) ---------- */
body.is-landscape .top-ui { display: none !important; }

body.is-landscape.menu-open .top-ui {
  display: flex !important;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: rgba(29, 19, 11, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 8px 12px 8px 56px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.55);
  animation: slide-down 0.22s ease;
}
@keyframes slide-down {
  from { transform: translateY(-100%); }
  to   { transform: translateY(0); }
}

body.is-landscape .menu-btn { display: flex; }
body.is-landscape.menu-open .menu-backdrop { display: block; opacity: 1; }
body.is-landscape.menu-open .menu-btn {
  background: rgba(232, 176, 107, 0.3);
  border-color: var(--wood-1);
}

body.is-landscape .play-area { padding-top: 0; }
body.is-landscape .topbar { padding: 4px 8px; }
body.is-landscape .topbar .title { font-size: 13px; }
body.is-landscape .tabs { padding: 0 8px 4px; }
body.is-landscape .tab { padding: 5px 0; font-size: 12px; }
body.is-landscape .song-bar { padding: 2px 8px 4px; }
body.is-landscape .kalimba { padding: 14px 14px 50px; gap: 4px; }
body.is-landscape .tine { max-width: 50px; }

/* small portrait phones */
@media (max-width: 380px) {
  .kalimba { padding: 18px 14px 56px; gap: 4px; }
  .tine { max-width: 32px; }
  .tine .key-hint { font-size: 10px; top: 8px; }
}