:root {
    --bg: #FBF1E6;
    --bg-glow: #F6E4CF;
    --text: #4A3B32;
    --text-soft: #8A7A6D;
    --circle: #2F8F5B;
    --circle-dark: #1F6E45;
    --circle-shadow: rgba(47, 143, 91, 0.32);
    --card-shadow: rgba(120, 90, 60, 0.12);
    --card-bg: #ffffffb0;
    --card-border: rgba(74, 59, 50, 0.10);
    --toggle-bg: #ffffffaa;
    --toggle-border: rgba(74, 59, 50, 0.12);
    --ring: rgba(255,255,255,0.6);
    --accent2: #C8895A;
    --milestone-bg: #F2D9B8;
    --danger: #C4483A;
    --transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  [data-theme="dark"] {
    --bg: #241C17;
    --bg-glow: #362A21;
    --text: #F3E8DC;
    --text-soft: #B4A392;
    --circle: #4CAF7D;
    --circle-dark: #2E8F5C;
    --circle-shadow: rgba(76, 175, 125, 0.42);
    --card-shadow: rgba(0, 0, 0, 0.35);
    --card-bg: #ffffff0f;
    --card-border: rgba(255, 255, 255, 0.10);
    --toggle-bg: #ffffff14;
    --toggle-border: rgba(255, 255, 255, 0.14);
    --ring: rgba(255,255,255,0.25);
    --accent2: #E3A876;
    --milestone-bg: #4A3624;
    --danger: #FF7A6B;
  }

  * { box-sizing: border-box; }
  html, body { height: 100%; margin: 0; touch-action: manipulation; }

  body {
    font-family: 'Quicksand', sans-serif;
    background:
      radial-gradient(circle at 20% 15%, var(--bg-glow), transparent 55%),
      radial-gradient(circle at 85% 90%, var(--bg-glow), transparent 50%),
      var(--bg);
    background-attachment: fixed;
    background-size: cover;
    color: var(--text);
    min-height: 100vh;
    transition: background var(--transition), color var(--transition);
  }

  .page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(90px + env(safe-area-inset-top)) 20px calc(90px + env(safe-area-inset-bottom));
  }

  .hidden { display: none !important; }

  /* ---------- top bar icons ---------- */
  .icon-btn {
    position: fixed;
    top: max(24px, env(safe-area-inset-top));
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 1px solid var(--toggle-border);
    background: var(--toggle-bg);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), transform 0.2s ease;
    z-index: 20;
  }
  .icon-btn:hover { transform: scale(1.06); }
  .icon-btn svg { width: 21px; height: 21px; stroke: var(--text); }

  #themeToggle { right: 24px; }
  #settingsOpen { bottom: max(24px, env(safe-area-inset-bottom)); right: 24px; top: auto; }
  #settingsBack { left: 24px; }
  #homeBtn { left: 24px; }

  .icon-sun { display: none; }
  .icon-moon { display: block; }
  [data-theme="dark"] .icon-sun { display: block; }
  [data-theme="dark"] .icon-moon { display: none; }

  /* ---------- main page ---------- */
  .stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    width: 100%;
    max-width: 420px;
  }

  .counter-btn {
    width: min(44vw, 200px);
    height: min(44vw, 200px);
    border-radius: 50%;
    border: none;
    background: radial-gradient(circle at 35% 30%, var(--circle), var(--circle-dark));
    color: #fff;
    font-family: 'Nunito', sans-serif;
    font-weight: 800;
    font-size: clamp(26px, 5.5vw, 40px);
    cursor: pointer;
    box-shadow:
      0 18px 40px var(--circle-shadow),
      0 4px 10px var(--card-shadow),
      inset 0 2px 6px var(--ring);
    transition: transform 0.15s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease, opacity 0.3s ease;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    flex-shrink: 0;
  }
  .counter-btn:hover { transform: translateY(-2px) scale(1.02); }
  .counter-btn:focus-visible { outline: 3px solid var(--text-soft); outline-offset: 6px; }
  .counter-btn.done { opacity: 0.55; }
  .counter-btn.milestone-pulse {
    animation: pulseRing 0.5s ease;
  }
  @keyframes pulseRing {
    0% { box-shadow: 0 0 0 0 var(--circle-shadow), 0 18px 40px var(--circle-shadow); }
    60% { box-shadow: 0 0 0 18px rgba(0,0,0,0), 0 18px 40px var(--circle-shadow); }
    100% { box-shadow: 0 18px 40px var(--circle-shadow), 0 4px 10px var(--card-shadow); }
  }

  .counter-btn.tap-elastic {
    animation: elasticTap 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  }
  @keyframes elasticTap {
    0%   { transform: scale(1); }
    40%  { transform: scale(0.94); }
    70%  { transform: scale(1.02); }
    100% { transform: scale(1); }
  }

  .count {
    font-family: 'Nunito', sans-serif;
    font-weight: 800;
    font-size: clamp(34px, 7vw, 50px);
    letter-spacing: -0.5px;
    line-height: 1;
    transition: transform 0.15s ease;
    text-align: center;
  }
  .count.bump { transform: scale(1.15); }

  .label { font-size: 14px; color: var(--text-soft); font-weight: 500; text-align: center; }

  .reset {
    background: none;
    border: none;
    color: var(--text-soft);
    font-family: 'Quicksand', sans-serif;
    font-size: 13px;
    cursor: pointer;
    padding: 6px 14px;
    border-radius: 20px;
    transition: background 0.2s ease, color 0.2s ease;
  }
  .reset:hover { background: var(--toggle-bg); color: var(--text); }

  .preset-panel {
    width: 100%;
    background: none;
    border: none;
    border-radius: 24px;
    padding: 22px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    box-shadow: none;
    transition: box-shadow 0.3s ease;
  }

  .scheme {
    display: flex;
    gap: 6px;
    width: 100%;
  }

  .scheme-part {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
  }

  .scheme-track {
    width: 100%;
    height: 8px;
    border-radius: 6px;
    background: var(--toggle-border);
    overflow: hidden;
  }

  .scheme-fill {
    height: 100%;
    background: var(--circle);
    border-radius: 6px;
    transition: width 0.2s ease;
  }

  .scheme-part.current .scheme-track { background: var(--card-border); }
  .scheme-part.current .scheme-fill { background: var(--accent2); }

  .scheme-num {
    font-size: 12px;
    color: var(--text-soft);
    font-weight: 600;
  }
  .scheme-part.current .scheme-num { color: var(--text); }

  .current-text {
    font-family: 'Nunito', sans-serif;
    font-weight: 700;
    font-size: clamp(20px, 5vw, 28px);
    text-align: center;
    min-height: 1.3em;
    line-height: 1.35;
    white-space: pre-line;
  }
  .current-text.long {
    font-size: clamp(15px, 3.6vw, 18px);
    font-weight: 600;
  }

  .desc-hint {
    font-size: 13px;
    color: var(--text-soft);
    text-align: center;
    line-height: 1.5;
    font-style: italic;
    max-width: 340px;
    white-space: pre-line;
  }

  .progress-line {
    font-size: 13px;
    color: var(--text-soft);
    text-align: center;
  }

  .freq-badge {
    font-size: 12px;
    color: var(--text-soft);
    background: var(--toggle-bg);
    border: 1px solid var(--card-border);
    padding: 3px 10px;
    border-radius: 12px;
  }

  .done-badge {
    font-family: 'Nunito', sans-serif;
    font-weight: 700;
    font-size: 18px;
    text-align: center;
  }

  /* tally-type preset */
  .tally-count {
    font-family: 'Nunito', sans-serif;
    font-weight: 800;
    font-size: clamp(40px, 9vw, 56px);
    line-height: 1;
    text-align: center;
  }

  .milestones-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
  }

  .milestone-pill {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-soft);
    background: var(--toggle-bg);
    border: 1px solid var(--card-border);
    transition: all 0.25s ease;
  }
  .milestone-pill.reached {
    background: var(--milestone-bg);
    color: var(--text);
    border-color: transparent;
  }
  .milestone-pill.next {
    background: var(--circle);
    color: #fff;
    border-color: var(--circle);
    box-shadow: 0 6px 14px var(--circle-shadow);
  }

  /* ---------- settings page ---------- */
  .settings-wrap {
    width: 100%;
    max-width: 480px;
    display: flex;
    flex-direction: column;
    gap: 22px;
  }

  .settings-title {
    font-family: 'Nunito', sans-serif;
    font-weight: 800;
    font-size: 26px;
    text-align: center;
  }

  .settings-sub {
    font-size: 13px;
    color: var(--text-soft);
    text-align: center;
    margin-top: -14px;
  }

  #presetsList {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .preset-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease;
  }
  .preset-card:hover { transform: translateY(-2px); }
  .preset-card.active {
    border-color: var(--circle);
  }

  .preset-card-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
  }

  .preset-check {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--circle);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  .preset-check svg { width: 14px; height: 14px; stroke: #fff; }

  .preset-card-title {
    font-family: 'Nunito', sans-serif;
    font-weight: 700;
    font-size: 17px;
  }

  .preset-card-scheme {
    font-size: 12.5px;
    color: var(--text-soft);
  }

  .preset-card-part {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 10px 12px;
    border-radius: 12px;
    background: var(--toggle-bg);
    border: 1px solid var(--card-border);
  }

  .preset-card-part-head {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
  }

  .preset-card-part-head .n { color: var(--text-soft); font-weight: 600; }

  .preset-card-part-desc {
    font-size: 12px;
    color: var(--text-soft);
    font-style: italic;
    line-height: 1.4;
  }

  .empty-note {
    text-align: center;
    color: var(--text-soft);
    font-size: 13px;
    padding: 10px;
  }