/* =========================================================
   Grace Timer — style.css
   高級感・静けさをテーマにしたダークモードUI
   テーマ色はCSS変数(--accent, --accent-soft, --bg-base 等)で切替可能
   ========================================================= */

/* ---------- 基本リセット ---------- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  /* タップ時の青いハイライトを消す */
  -webkit-tap-highlight-color: transparent;
}

html, body {
  height: 100%;
  overscroll-behavior: none; /* 引っ張って更新などを防止 */
}

/* ダブルタップによる拡大を防止(viewportに加えてCSS側でも保険) */
html {
  touch-action: manipulation;
}

body {
  background: #0a0a0a;
  color: #f2ede4;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  transition: background-color .6s ease, color .6s ease;
}

button {
  font-family: inherit;
  border: none;
  background: none;
  color: inherit;
  cursor: pointer;
  -webkit-user-select: none;
  user-select: none;
}

/* =========================================================
   テーマ変数のデフォルト(Midnight Gold)
   JS側で body[data-theme] に応じて上書きする
   ========================================================= */
:root {
  --bg-base: #0a0a0a;
  --bg-elevated: #121212;
  --accent: #d8b978;        /* シャンパンゴールド */
  --accent-soft: #e9d7ab;
  --text-main: #f3ede1;
  --text-sub: rgba(243, 237, 225, 0.55);
  --ring-track: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(255, 255, 255, 0.045);
  --glass-border: rgba(255, 255, 255, 0.10);
}

body { background-color: var(--bg-base); color: var(--text-main); }

/* =========================================================
   背景画像レイヤー
   ========================================================= */
.bg-layer {
  position: fixed;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
  opacity: 0; /* 画像未設定時は非表示 */
  transition: opacity .8s ease, filter .25s ease;
  /* ぼかし・明るさはJSでfilterプロパティを動的に設定する */
}
.bg-layer.has-image { opacity: 1; }

.bg-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 1;
  pointer-events: none;
}

/* =========================================================
   全体レイアウト
   ========================================================= */
.app-shell {
  position: relative;
  z-index: 2;
  max-width: 480px;
  margin: 0 auto;
  min-height: 100vh;
  /* iPhoneのSafe Area対応 */
  padding-top: max(env(safe-area-inset-top), 18px);
  padding-bottom: max(env(safe-area-inset-bottom), 18px);
  padding-left: max(env(safe-area-inset-left), 20px);
  padding-right: max(env(safe-area-inset-right), 20px);
  display: flex;
  flex-direction: column;
}

.screen {
  display: flex;
  flex-direction: column;
  flex: 1;
  animation: fadeIn .5s ease;
}
.screen-hidden { display: none; }

/* タイマー画面全体を「上部バー / 中央ブロック / 操作ボタン」の3段に分け、
   中央ブロックが余白の中で常に垂直中央にくるようにする */
.screen-timer {
  min-height: 0;
}

.timer-middle {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-height: 0;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- 上部バー ---------- */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 4px 8px;
}

.app-title {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-main);
}

.settings-title {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.top-bar-spacer { width: 40px; }

.icon-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--text-sub);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: color .3s ease, background .3s ease, transform .15s ease;
}
.icon-btn:active { transform: scale(0.92); }
.icon-btn:hover { color: var(--accent-soft); }

/* =========================================================
   円形プログレス + 残り時間
   ========================================================= */
.ring-wrap {
  position: relative;
  width: min(78vw, 300px);
  height: min(78vw, 300px);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ring-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.ring-bg {
  fill: none;
  stroke: var(--ring-track);
  stroke-width: 6;
}

.ring-progress {
  fill: none;
  stroke: var(--accent);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 816.8; /* 2 * PI * 130 */
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1s linear, stroke .6s ease;
  filter: drop-shadow(0 0 8px rgba(216, 185, 120, 0.35));
}

.ring-center {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.time-display {
  font-size: clamp(40px, 12vw, 56px);
  font-weight: 300;
  letter-spacing: 0.03em;
  font-variant-numeric: tabular-nums;
  color: var(--text-main);
}

.time-label {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-sub);
}

/* =========================================================
   分・秒ピッカー
   ========================================================= */
.time-picker {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin: 10px 0;
}

.picker-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.picker-value {
  font-size: 22px;
  font-weight: 500;
  min-width: 46px;
  text-align: center;
  font-variant-numeric: tabular-nums;
  color: var(--text-main);
}

.picker-colon {
  font-size: 20px;
  color: var(--text-sub);
  padding-bottom: 2px;
}

.picker-btn {
  width: 34px;
  height: 28px;
  font-size: 11px;
  color: var(--text-sub);
  border-radius: 10px;
  transition: color .2s, background .2s;
}
.picker-btn:active { background: var(--glass-bg); color: var(--accent-soft); }

/* =========================================================
   プリセットボタン
   ========================================================= */
.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 6px;
}

.preset-btn {
  padding: 9px 16px;
  font-size: 13px;
  letter-spacing: 0.02em;
  border-radius: 999px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-sub);
  transition: all .25s ease;
  backdrop-filter: blur(10px);
}
.preset-btn:active { transform: scale(0.94); }
.preset-btn.active {
  color: #12100b;
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 600;
}

/* =========================================================
   スタート/一時停止/リセット
   ========================================================= */
.control-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  margin-top: auto;
  padding: 10px 0 6px;
}

.control-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: transform .15s ease, background .3s ease;
}
.control-btn:active { transform: scale(0.92); }

.control-btn-ghost {
  width: 52px;
  height: 52px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-sub);
  backdrop-filter: blur(10px);
}

.control-btn-main {
  width: 78px;
  height: 78px;
  background: linear-gradient(145deg, var(--accent-soft), var(--accent));
  color: #14120c;
  box-shadow: 0 6px 24px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.06) inset;
}

/* =========================================================
   設定画面
   ========================================================= */
.settings-scroll {
  flex: 1;
  overflow-y: auto;
  padding-bottom: 20px;
}

.setting-block { margin-top: 22px; }

/* =========================================================
   ブランドステートメント(設定画面の説明文)
   ========================================================= */
.brand-block {
  padding: 26px 20px 24px;
  border-radius: 20px;
  background: linear-gradient(155deg, var(--glass-bg), rgba(255,255,255,0.015));
  border: 1px solid var(--glass-border);
  text-align: center;
  backdrop-filter: blur(10px);
}

.brand-mark {
  width: 46px;
  height: 46px;
  margin: 0 auto 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--accent);
  color: var(--accent-soft);
  font-family: Georgia, "Hiragino Mincho ProN", serif;
  font-size: 20px;
  box-shadow: 0 0 16px rgba(255,255,255,0.06);
}

.brand-statement {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-main);
  margin-bottom: 10px;
}

.brand-sub {
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--text-sub);
}

/* =========================================================
   背景画像のぼかし・明るさ調整スライダー
   ========================================================= */
.bg-adjust {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-height: 200px;
  opacity: 1;
  transition: opacity .35s ease, max-height .35s ease, margin .35s ease, padding .35s ease;
}

.bg-adjust.bg-adjust-hidden {
  opacity: 0;
  max-height: 0;
  margin-top: 0;
  padding-top: 0;
  border-top-color: transparent;
  overflow: hidden;
  pointer-events: none;
}

.slider-row { display: flex; flex-direction: column; gap: 8px; }

.slider-label-row {
  display: flex;
  justify-content: space-between;
  font-size: 12.5px;
  color: var(--text-sub);
  letter-spacing: 0.03em;
}

.slider-value {
  color: var(--accent-soft);
  font-variant-numeric: tabular-nums;
}

/* range inputのつまみ・トラックをガラス風にカスタマイズ */
.glass-range {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
  outline: none;
}

.glass-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
  cursor: pointer;
  border: 2px solid rgba(255,255,255,0.5);
}

.glass-range::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
  cursor: pointer;
  border: 2px solid rgba(255,255,255,0.5);
}

.glass-range::-moz-range-track {
  height: 4px;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
}

.setting-heading {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-sub);
  margin-bottom: 12px;
}

/* ---------- テーマ選択グリッド ---------- */
.theme-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.theme-card {
  position: relative;
  padding: 14px;
  border-radius: 16px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  text-align: left;
  transition: border-color .25s ease, transform .15s ease;
}
.theme-card:active { transform: scale(0.97); }
.theme-card.selected { border-color: var(--accent); }

.theme-swatch {
  display: flex;
  gap: 4px;
  margin-bottom: 10px;
}
.theme-swatch span {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.15);
}

.theme-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-main);
}

/* ---------- フォント選択グリッド ---------- */
.font-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.font-card {
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  text-align: left;
  font-size: 15px;
  color: var(--text-main);
  transition: border-color .25s ease;
}
.font-card.selected { border-color: var(--accent); color: var(--accent-soft); }

/* ---------- 背景画像コントロール ---------- */
.bg-controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.glass-btn {
  padding: 11px 18px;
  border-radius: 999px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  font-size: 13px;
  backdrop-filter: blur(10px);
  transition: transform .15s ease, border-color .2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.glass-btn:active { transform: scale(0.95); }

.file-label { cursor: pointer; }

/* ---------- スイッチ(トグル) ---------- */
.switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 4px;
  font-size: 14px;
  border-bottom: 1px solid var(--glass-border);
}
.switch-row:last-child { border-bottom: none; }

.switch {
  width: 46px;
  height: 27px;
  border-radius: 999px;
  background: rgba(255,255,255,0.12);
  position: relative;
  transition: background .25s ease;
}
.switch[aria-checked="true"] { background: var(--accent); }

.switch-knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 23px;
  height: 23px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.4);
  transition: transform .25s ease;
}
.switch[aria-checked="true"] .switch-knob { transform: translateX(19px); }

.footer-note {
  text-align: center;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--text-sub);
  margin-top: 26px;
  opacity: 0.7;
}

/* =========================================================
   終了時の通知トースト
   ========================================================= */
.finish-toast {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(6px);
  transition: opacity .4s ease;
  opacity: 1;
}
.finish-toast-hidden {
  opacity: 0;
  pointer-events: none;
}

.finish-toast-inner {
  width: min(84vw, 320px);
  padding: 34px 26px;
  border-radius: 22px;
  background: var(--bg-elevated);
  border: 1px solid var(--glass-border);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  animation: toastPop .5s cubic-bezier(.2,.9,.25,1);
}

@keyframes toastPop {
  from { opacity: 0; transform: scale(0.92) translateY(8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.finish-ring {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  box-shadow: 0 0 18px rgba(216, 185, 120, 0.4);
}

.finish-message {
  font-size: 16px;
  letter-spacing: 0.04em;
  color: var(--text-main);
}

/* =========================================================
   フォント選択肢(font-familyのみで実装、外部読み込みなし)
   ========================================================= */
body[data-font="system"] { font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif; }
body[data-font="serif"]  { font-family: Georgia, "Hiragino Mincho ProN", "Times New Roman", serif; }
body[data-font="sans"]   { font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", sans-serif; }
body[data-font="mono"]   { font-family: "SF Mono", "SFMono-Regular", "Courier New", monospace; }

/* =========================================================
   小さい画面向けの微調整
   ========================================================= */
@media (max-width: 360px) {
  .preset-btn { padding: 8px 12px; font-size: 12px; }
  .control-btn-main { width: 70px; height: 70px; }
  .control-btn-ghost { width: 46px; height: 46px; }
}

/* スクロールバーを控えめに */
.settings-scroll::-webkit-scrollbar { width: 4px; }
.settings-scroll::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 999px;
}