/* =========================================================================
   Roger's Todo — sidebar layout, heavier hierarchy, no apologies
   ========================================================================= */

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

:root {
  --font-sans: "Inter", "Noto Sans TC", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --font-serif: "Noto Serif TC", Georgia, serif;
  --radius-sm: 5px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --ease: cubic-bezier(.2,.7,.2,1);
  --dur-fast: 120ms;
  --dur: 180ms;
  --dur-slow: 320ms;
}

/* ===== Linear (default) ===== */
[data-style="linear"][data-theme="dark"] {
  --bg:           #0d0d10;
  --bg-elev:      #16161a;
  --bg-elev-2:    #1d1d22;
  --bg-hover:     #22222a;
  --sidebar-bg:   #0a0a0d;
  --border:       #26262e;
  --border-soft:  #1c1c22;
  --text:         #ededf0;
  --text-soft:    #a1a1aa;
  --text-mute:    #6e6e78;
  --accent:       #8b8cf7;
  --accent-soft:  rgba(139,140,247,.16);
  --accent-text:  #b6b7ff;
  --focus-ring:   rgba(139,140,247,.4);
  --c-priority:   #f87171;
  --c-normal:     #60a5fa;
  --c-done:       #34d399;
  --c-warn:       #fbbf24;
  --heading-font: var(--font-sans);
  --heading-weight: 600;
}
[data-style="linear"][data-theme="light"] {
  --bg:           #ffffff;
  --bg-elev:      #f7f7f9;
  --bg-elev-2:    #efeff2;
  --bg-hover:     #ebebee;
  --sidebar-bg:   #f4f4f7;
  --border:       #e2e2e6;
  --border-soft:  #ecedf0;
  --text:         #18181b;
  --text-soft:    #52525b;
  --text-mute:    #9595a0;
  --accent:       #5b5fef;
  --accent-soft:  rgba(91,95,239,.10);
  --accent-text:  #4f53d8;
  --focus-ring:   rgba(91,95,239,.32);
  --c-priority:   #dc2626;
  --c-normal:     #2563eb;
  --c-done:       #059669;
  --c-warn:       #d97706;
  --heading-font: var(--font-sans);
  --heading-weight: 600;
}

/* ===== Paper ===== */
[data-style="paper"][data-theme="dark"] {
  --bg:           #1a1612;
  --bg-elev:      #221c16;
  --bg-elev-2:    #2a231b;
  --bg-hover:     #312921;
  --sidebar-bg:   #15110d;
  --border:       #3a2f24;
  --border-soft:  #2c241c;
  --text:         #ece3d2;
  --text-soft:    #b6a98f;
  --text-mute:    #7a6f5c;
  --accent:       #d4a86a;
  --accent-soft:  rgba(212,168,106,.16);
  --accent-text:  #e6bf86;
  --focus-ring:   rgba(212,168,106,.4);
  --c-priority:   #e07a5f;
  --c-normal:     #81a4b8;
  --c-done:       #a3b18a;
  --c-warn:       #d4a86a;
  --heading-font: var(--font-serif);
  --heading-weight: 700;
}
[data-style="paper"][data-theme="light"] {
  --bg:           #f3ecdc;
  --bg-elev:      #faf3e1;
  --bg-elev-2:    #fdf8e8;
  --bg-hover:     #ede4cd;
  --sidebar-bg:   #ede4cd;
  --border:       #d6cab2;
  --border-soft:  #e2d8c0;
  --text:         #2a2218;
  --text-soft:    #6b5d45;
  --text-mute:    #9b8e72;
  --accent:       #8a6a2c;
  --accent-soft:  rgba(138,106,44,.12);
  --accent-text:  #6e5320;
  --focus-ring:   rgba(138,106,44,.4);
  --c-priority:   #b54232;
  --c-normal:     #345a73;
  --c-done:       #5b7a3e;
  --c-warn:       #a06b1e;
  --heading-font: var(--font-serif);
  --heading-weight: 700;
}

/* ===== GitHub Dark Pro ===== */
[data-style="gh"][data-theme="dark"] {
  --bg:           #0d1117;
  --bg-elev:      #161b22;
  --bg-elev-2:    #1c2128;
  --bg-hover:     #21262d;
  --sidebar-bg:   #010409;
  --border:       #30363d;
  --border-soft:  #21262d;
  --text:         #e6edf3;
  --text-soft:    #8b949e;
  --text-mute:    #6e7681;
  --accent:       #2f81f7;
  --accent-soft:  rgba(47,129,247,.16);
  --accent-text:  #58a6ff;
  --focus-ring:   rgba(47,129,247,.45);
  --c-priority:   #f85149;
  --c-normal:     #58a6ff;
  --c-done:       #3fb950;
  --c-warn:       #d29922;
  --heading-font: var(--font-sans);
  --heading-weight: 600;
}
[data-style="gh"][data-theme="light"] {
  --bg:           #ffffff;
  --bg-elev:      #f6f8fa;
  --bg-elev-2:    #ffffff;
  --bg-hover:     #eaeef2;
  --sidebar-bg:   #f6f8fa;
  --border:       #d0d7de;
  --border-soft:  #d8dee4;
  --text:         #1f2328;
  --text-soft:    #59636e;
  --text-mute:    #8c959f;
  --accent:       #0969da;
  --accent-soft:  rgba(9,105,218,.10);
  --accent-text:  #0860ca;
  --focus-ring:   rgba(9,105,218,.35);
  --c-priority:   #cf222e;
  --c-normal:     #0969da;
  --c-done:       #1a7f37;
  --c-warn:       #9a6700;
  --heading-font: var(--font-sans);
  --heading-weight: 600;
}

/* ===== Apple (SF / macOS / iOS 風格) ===== */
[data-style="apple"][data-theme="dark"] {
  --bg:           #1c1c1e;
  --bg-elev:      #2c2c2e;
  --bg-elev-2:    #3a3a3c;
  --bg-hover:     #3a3a3c;
  --sidebar-bg:   rgba(28, 28, 30, .82);
  --border:       rgba(255, 255, 255, .09);
  --border-soft:  rgba(255, 255, 255, .055);
  --text:         #f5f5f7;
  --text-soft:    #aeaeb2;
  --text-mute:    #6c6c70;
  --accent:       #0a84ff;
  --accent-soft:  rgba(10, 132, 255, .18);
  --accent-text:  #409cff;
  --focus-ring:   rgba(10, 132, 255, .45);
  --c-priority:   #ff453a;
  --c-normal:     #0a84ff;
  --c-done:       #30d158;
  --c-warn:       #ff9f0a;
  --heading-font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", "PingFang TC", "Heiti TC", sans-serif;
  --heading-weight: 600;
}
[data-style="apple"][data-theme="light"] {
  --bg:           #f5f5f7;
  --bg-elev:      #ffffff;
  --bg-elev-2:    #fafafa;
  --bg-hover:     #f0f0f2;
  --sidebar-bg:   rgba(245, 245, 247, .85);
  --border:       rgba(60, 60, 67, .12);
  --border-soft:  rgba(60, 60, 67, .07);
  --text:         #1d1d1f;
  --text-soft:    #6e6e73;
  --text-mute:    #a1a1a6;
  --accent:       #007aff;
  --accent-soft:  rgba(0, 122, 255, .12);
  --accent-text:  #0066d6;
  --focus-ring:   rgba(0, 122, 255, .35);
  --c-priority:   #ff3b30;
  --c-normal:     #007aff;
  --c-done:       #34c759;
  --c-warn:       #ff9500;
  --heading-font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", "PingFang TC", "Heiti TC", sans-serif;
  --heading-weight: 600;
}
[data-style="apple"] body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", "PingFang TC", "Heiti TC", sans-serif;
  letter-spacing: -.005em;
}
/* Apple-specific: 圓角 + frosted sidebar + 細節 */
[data-style="apple"] .sidebar {
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
}
[data-style="apple"] .lane {
  border-radius: 12px;
}
[data-style="apple"] .item {
  border-radius: 8px;
}
[data-style="apple"] .agenda__col {
  border-radius: 14px;
  box-shadow:
    0 1px 2px rgba(0,0,0,.04),
    0 4px 16px rgba(0,0,0,.04);
}
[data-theme="dark"][data-style="apple"] .agenda__col {
  box-shadow:
    0 1px 0 rgba(255,255,255,.04),
    0 4px 16px rgba(0,0,0,.3);
}
[data-style="apple"] .btn-primary {
  background: var(--accent);
  border-radius: 8px;
  font-weight: 500;
  letter-spacing: -.01em;
}
[data-style="apple"] .agenda__item,
[data-style="apple"] .cal__agenda-list .item__inner {
  border-radius: 10px;
}
[data-style="apple"] .cal__day.is-today .cal__daynum,
[data-style="apple"] .cal__day.is-selected .cal__daynum {
  background: var(--c-priority);
  color: #fff;
}
[data-style="apple"] .header__title h1 {
  font-weight: 600;
  letter-spacing: -.025em;
}
[data-style="apple"] .view-header__title {
  font-weight: 600;
  letter-spacing: -.025em;
}
[data-style="apple"] .lane__title {
  letter-spacing: .02em;
  font-weight: 600;
  text-transform: none;
  font-size: 12px;
}
[data-style="apple"] .topbar,
[data-style="apple"] .header {
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  background: color-mix(in oklab, var(--bg) 78%, transparent);
}
[data-style="apple"] .seg {
  border-radius: 8px;
  background: var(--bg-elev-2);
}
[data-style="apple"] .seg__btn.is-active {
  border-radius: 6px;
}
[data-style="apple"] .item__check {
  border-radius: 50%;
}
[data-style="apple"] .item__check:checked {
  background: var(--accent);
  border-color: var(--accent);
}
[data-style="apple"] .item__id {
  font-family: "SF Mono", ui-monospace, Menlo, monospace;
  font-size: 10.5px;
  letter-spacing: 0;
}
[data-style="apple"] .brand-mark {
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), color-mix(in oklab, var(--accent) 70%, var(--c-priority)));
  color: #fff;
}

/* ============ Body ============ */
body {
  font-family: var(--font-sans);
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "cv11","ss01";
}
::selection { background: var(--accent-soft); color: var(--text); }

/* ============ App layout ============ */
.app {
  display: grid;
  grid-template-columns: 232px 1fr;
  height: 100vh;
}

/* ============ Sidebar ============ */
.sidebar {
  display: flex; flex-direction: column;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  padding: 14px 10px;
  gap: 4px;
  overflow-y: auto;
}
.sidebar__brand {
  display: flex; align-items: center; gap: 10px;
  padding: 4px 8px 14px;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 8px;
}
.brand-mark {
  width: 30px; height: 30px;
  border-radius: 7px;
  background: linear-gradient(135deg, var(--accent), color-mix(in oklab, var(--accent) 50%, white));
  display: flex; align-items: center; justify-content: center;
  color: white;
  flex-shrink: 0;
  box-shadow: 0 2px 8px -2px color-mix(in oklab, var(--accent) 50%, transparent);
}
[data-style="paper"] .brand-mark { color: #1c1409; }
.brand-meta { display: flex; flex-direction: column; min-width: 0; }
.brand-meta__name {
  font-family: var(--heading-font);
  font-weight: var(--heading-weight);
  font-size: 14px;
  letter-spacing: -.01em;
  color: var(--text);
  line-height: 1.2;
}
.brand-meta__user {
  font: 500 11px var(--font-mono);
  color: var(--text-mute);
  letter-spacing: .01em;
}

.sidebar__nav { display: flex; flex-direction: column; gap: 1px; padding: 0 0 8px; }

.sidebar__section { padding: 8px 0 4px; display: flex; flex-direction: column; gap: 1px; }
.sidebar__section-label {
  font: 600 10px var(--font-sans);
  color: var(--text-mute);
  text-transform: uppercase;
  letter-spacing: .08em;
  padding: 0 10px 6px;
}

.sidebar__item, .tab {
  display: flex; align-items: center; gap: 9px;
  padding: 6px 10px;
  border: 0;
  background: transparent;
  color: var(--text-soft);
  font: 500 13px var(--font-sans);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
  text-align: left;
  width: 100%;
  letter-spacing: -.005em;
}
.sidebar__item:hover, .tab:hover { background: var(--bg-hover); color: var(--text); }
.tab.is-active {
  background: var(--accent-soft);
  color: var(--accent-text);
  font-weight: 600;
}
.tab__icon {
  width: 16px; height: 16px;
  flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 4px;
  font-size: 10px;
  background: var(--bg-elev-2);
  color: var(--text-soft);
}
.tab.is-active .tab__icon {
  background: var(--accent);
  color: white;
}
[data-style="paper"] .tab.is-active .tab__icon { color: #1c1409; }
.tab__label { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tab__count {
  font: 500 10.5px var(--font-mono);
  color: var(--text-mute);
  background: transparent;
  padding: 0;
  letter-spacing: 0;
}
.tab.is-active .tab__count { color: var(--accent-text); }

.sidebar__item kbd {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0 5px;
  color: var(--text-mute);
  line-height: 1.5;
}

.sidebar__divider {
  height: 1px;
  background: var(--border-soft);
  margin: 6px 4px;
}

.sidebar__footer {
  margin-top: auto;
  padding: 8px 4px 0;
  border-top: 1px solid var(--border-soft);
}
.sidebar__theme {
  display: flex; align-items: center; gap: 6px;
}
.seg {
  display: inline-flex;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  border-radius: 6px;
  padding: 2px;
  gap: 2px;
}
.seg--full { flex: 1; }
.seg--full .seg__btn { flex: 1; }
.seg__btn {
  border: 0; background: transparent;
  color: var(--text-soft);
  font: 500 10.5px var(--font-mono);
  padding: 3px 7px;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
  letter-spacing: .02em;
}
.seg__btn:hover { color: var(--text); }
.seg__btn.is-active { background: var(--accent-soft); color: var(--accent-text); }
.seg--sm .seg__btn { font-family: var(--font-sans); font-size: 11px; letter-spacing: 0; font-weight: 500; }

.iconbtn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 26px; height: 26px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text-soft);
  border-radius: 5px;
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
  flex-shrink: 0;
}
.iconbtn:hover { color: var(--text); background: var(--bg-hover); }
.iconbtn:active { transform: scale(.94); }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: none; }

.iconbtn-ghost {
  border: 0; background: transparent;
  width: 22px; height: 22px;
  color: var(--text-mute);
  font-size: 16px; line-height: 1;
  cursor: pointer; border-radius: 4px;
  display: inline-flex; align-items: center; justify-content: center;
}
.iconbtn-ghost:hover { background: var(--bg-hover); color: var(--text); }

/* ============ Main column ============ */
.main {
  display: flex; flex-direction: column;
  overflow: hidden;
  height: 100vh;
}

.header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px 14px;
  border-bottom: 1px solid var(--border-soft);
  background: var(--bg);
  flex-shrink: 0;
  gap: 24px;
}
.header__title { display: flex; align-items: baseline; gap: 12px; min-width: 0; }
.header__title h1 {
  margin: 0;
  font: var(--heading-weight) 19px var(--heading-font);
  color: var(--text);
  letter-spacing: -.015em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
[data-style="paper"] .header__title h1 { font-weight: 700; letter-spacing: 0; }
.header__sub {
  font: 400 12px var(--font-mono);
  color: var(--text-mute);
  white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
  max-width: 360px;
}

.header__progress {
  display: flex; align-items: center; gap: 10px;
  flex-shrink: 0;
  min-width: 220px;
}
.header__progress-num {
  display: flex; align-items: baseline; gap: 6px;
  font: 500 11.5px var(--font-mono);
  color: var(--text-soft);
  white-space: nowrap;
}
.header__progress-pct {
  color: var(--text);
  font-weight: 600;
  font-size: 12px;
}
.progress-track {
  width: 140px;
  height: 6px;
  background: var(--bg-elev-2);
  border-radius: 999px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--c-done), var(--accent));
  border-radius: 999px;
  transition: width var(--dur-slow) var(--ease);
}

/* ============ Cmdbar ============ */
.cmdbar {
  padding: 14px 24px 0;
  background: var(--bg);
  flex-shrink: 0;
}
.cmdbar__inner {
  display: flex; align-items: center; gap: 6px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 5px 5px 5px 11px;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.cmdbar__inner:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--focus-ring);
}
.cmdbar__icon { color: var(--text-mute); display: inline-flex; }
.cmdbar__input {
  flex: 1; border: 0; background: transparent;
  color: var(--text);
  font: 500 13.5px var(--font-sans);
  outline: 0; padding: 6px 0;
  min-width: 0;
  letter-spacing: -.005em;
}
.cmdbar__input::placeholder { color: var(--text-mute); font-weight: 400; }

.chip-select, .chip-date {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  color: var(--text-soft);
  border-radius: 5px;
  padding: 0 8px;
  height: 26px;
  font: 500 12px var(--font-sans);
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
}
.chip-select:hover, .chip-date:hover { background: var(--bg-hover); color: var(--text); }
.chip-date { font-family: var(--font-mono); font-size: 11px; color-scheme: dark; }
[data-theme="light"] .chip-date { color-scheme: light; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--accent);
  color: white;
  border: 0;
  border-radius: 5px;
  padding: 0 11px;
  height: 26px;
  font: 600 12px var(--font-sans);
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
}
[data-style="paper"] .btn-primary { color: #1c1409; }
.btn-primary:hover { filter: brightness(1.08); }
.btn-primary:active { transform: scale(.97); }
.btn-primary .kbd {
  background: rgba(255,255,255,.2);
  color: rgba(255,255,255,.92);
  font: 500 10px var(--font-mono);
  padding: 1px 5px;
  border-radius: 3px;
}
[data-style="paper"] .btn-primary .kbd { background: rgba(0,0,0,.16); color: rgba(0,0,0,.7); }

.searchbar {
  display: flex; align-items: center; gap: 8px;
  margin-top: 6px; padding: 6px 11px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  animation: slideDown var(--dur) var(--ease);
}
.searchbar svg { color: var(--text-mute); flex-shrink: 0; }
.searchbar input {
  flex: 1; border: 0; background: transparent;
  color: var(--text); font: 500 12.5px var(--font-sans);
  outline: 0; padding: 3px 0;
}
.searchbar input::placeholder { color: var(--text-mute); }
@keyframes slideDown { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: translateY(0); } }

/* ============ Board ============ */
.board {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 14px;
  padding: 16px 24px 24px;
  overflow: auto;
  flex: 1;
  align-content: start;
}
.board.is-fading { opacity: 0; transform: translateY(3px); }
.board { transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease); }

.lane {
  display: flex; flex-direction: column;
  background: var(--bg-elev);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--dur-fast) var(--ease);
  align-self: start;
}
.lane.is-drop-target {
  border-color: var(--accent);
  background: color-mix(in oklab, var(--accent-soft) 40%, var(--bg-elev));
}

.lane__head {
  display: flex; align-items: center; gap: 9px;
  padding: 11px 14px;
  border-bottom: 1px solid var(--border-soft);
  background: var(--bg-elev-2);
}
.lane__icon { font-size: 12px; line-height: 1; }
.lane__title {
  margin: 0;
  white-space: nowrap;
  font: 600 11.5px var(--heading-font);
  color: var(--text);
  letter-spacing: .04em;
  text-transform: uppercase;
}
[data-style="paper"] .lane__title { font-weight: 700; letter-spacing: .08em; }
.lane__count {
  margin-left: auto;
  font: 500 10.5px var(--font-mono);
  color: var(--text-soft);
  background: var(--bg);
  border-radius: 999px;
  padding: 1px 8px;
  min-width: 26px;
  text-align: center;
}

.lane__list {
  list-style: none; margin: 0; padding: 5px;
  display: flex; flex-direction: column;
  gap: 1px;
  min-height: 80px;
}
.lane__list:empty::after {
  content: "—";
  display: block;
  text-align: center;
  color: var(--text-mute);
  font: 500 13px var(--font-mono);
  padding: 32px 0;
  opacity: .4;
  letter-spacing: .2em;
}

/* ============ Item ============ */
.item {
  display: grid;
  grid-template-columns: 12px 16px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 7px 9px;
  border-radius: 5px;
  transition: background var(--dur-fast) var(--ease), opacity var(--dur) var(--ease);
  position: relative;
  min-height: 32px;
}
.item:hover { background: var(--bg-hover); }
.item.is-dragging { opacity: .35; }

.item__handle {
  color: var(--text-mute);
  cursor: grab;
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease);
  display: inline-flex; align-items: center; justify-content: center;
  user-select: none;
  height: 16px;
}
.item:hover .item__handle, .item:focus-within .item__handle { opacity: .55; }
.item__handle:hover { opacity: 1 !important; color: var(--text-soft); }
.item__handle:active { cursor: grabbing; }

.item__check {
  appearance: none;
  -webkit-appearance: none;
  width: 14px; height: 14px;
  border: 1.5px solid var(--text-mute);
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
  position: relative;
  transition: all var(--dur-fast) var(--ease);
  flex-shrink: 0;
}
.item__check:hover { border-color: var(--text-soft); background: var(--bg-elev-2); }
.item__check:checked {
  background: var(--c-done);
  border-color: var(--c-done);
  animation: pop var(--dur) var(--ease);
}
.item__check:checked::after {
  content: "";
  position: absolute;
  left: 3px; top: 0;
  width: 4px; height: 8px;
  border: solid white;
  border-width: 0 1.8px 1.8px 0;
  transform: rotate(45deg);
}
[data-style="paper"] .item__check:checked::after { border-color: #1c1409; }
@keyframes pop { 0% { transform: scale(.85); } 60% { transform: scale(1.18); } 100% { transform: scale(1); } }

.item__body { display: flex; align-items: center; gap: 10px; min-width: 0; }
.item__title {
  flex: 1; min-width: 0;
  font-size: 13.2px;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: text;
  padding: 1px 4px;
  margin: -1px -4px;
  border-radius: 3px;
  outline: 0;
  letter-spacing: -.005em;
}
.item__title:focus, .item__title[contenteditable="true"] {
  background: var(--bg);
  outline: 1.5px solid var(--accent);
  white-space: normal;
  overflow: visible;
}
.item.is-done .item__title {
  color: var(--text-mute);
  text-decoration: line-through;
  text-decoration-color: var(--text-mute);
}

.item__meta {
  display: flex; align-items: center; gap: 10px;
  flex-shrink: 0;
}
.item__date {
  font: 500 11px var(--font-mono);
  color: var(--text-soft);
  white-space: nowrap;
  display: inline-flex; align-items: center; gap: 4px;
}
.item__date.is-due-soon { color: var(--c-warn); }
.item__date.is-overdue {
  color: var(--c-priority);
  font-weight: 600;
}
.item__date.is-overdue::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--c-priority);
  display: inline-block;
}

.item__id {
  font: 500 10.5px var(--font-mono);
  color: var(--text-mute);
  letter-spacing: .02em;
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease);
}
.item:hover .item__id { opacity: .65; }

.item__delete {
  border: 0; background: transparent;
  color: var(--text-mute);
  width: 22px; height: 22px;
  border-radius: 4px;
  cursor: pointer;
  opacity: 0;
  display: inline-flex; align-items: center; justify-content: center;
  transition: all var(--dur-fast) var(--ease);
}
.item:hover .item__delete, .item:focus-within .item__delete { opacity: .7; }
.item__delete:hover {
  background: color-mix(in oklab, var(--c-priority) 18%, transparent);
  color: var(--c-priority);
  opacity: 1 !important;
}

.item.is-entering { animation: itemEnter var(--dur) var(--ease); }
.item.is-leaving {
  animation: itemLeave var(--dur-slow) var(--ease) forwards;
  pointer-events: none;
}
@keyframes itemEnter { from { opacity: 0; transform: translateY(-3px); } to { opacity: 1; transform: translateY(0); } }
@keyframes itemLeave { to { opacity: 0; transform: translateX(-10px); height: 0; padding: 0; margin: 0; } }

.drag-placeholder {
  height: 30px;
  background: var(--accent-soft);
  border: 1px dashed var(--accent);
  border-radius: 5px;
  margin: 1px 0;
}

/* ============ Stats ============ */
.stats-overlay {
  position: fixed; inset: 0; z-index: 40;
  display: flex; align-items: center; justify-content: center;
  background: color-mix(in oklab, var(--bg) 50%, black 50%);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  animation: fadeIn var(--dur) var(--ease);
  padding: 24px;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.stats-panel {
  width: min(540px, 100%);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 56px -12px rgba(0,0,0,.6);
  animation: panelIn var(--dur) var(--ease);
}
@keyframes panelIn { from { opacity: 0; transform: translateY(8px) scale(.98); } to { opacity: 1; transform: translateY(0) scale(1); } }
.stats-panel__head { display: flex; align-items: center; gap: 12px; padding: 13px 14px; border-bottom: 1px solid var(--border-soft); }
.stats-panel__head h3 { margin: 0; flex: 1; font: 600 13px var(--heading-font); }
.stats-panel__body { padding: 16px 14px 18px; }
.stats-summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-bottom: 14px; }
.stats-summary__cell { background: var(--bg-elev-2); border: 1px solid var(--border-soft); border-radius: 8px; padding: 9px 11px; }
.stats-summary__num { display: block; font: 600 20px var(--font-mono); color: var(--text); letter-spacing: -.02em; line-height: 1.1; }
.stats-summary__lbl { font-size: 10.5px; color: var(--text-soft); }
.stats-chart {
  display: flex; align-items: end; gap: 3px;
  height: 96px; padding: 6px 4px 22px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
}
.stats-bar { flex: 1; min-width: 4px; background: var(--bg-hover); border-radius: 3px 3px 0 0; position: relative; transition: background var(--dur-fast) var(--ease); }
.stats-bar.has-data { background: var(--accent); }
.stats-bar:hover { background: var(--accent-text); }
.stats-bar__label { position: absolute; bottom: -16px; left: 50%; transform: translateX(-50%); font: 500 9px var(--font-mono); color: var(--text-mute); white-space: nowrap; }

/* ============ Toast ============ */
.toast {
  position: fixed; bottom: 24px; left: 50%;
  transform: translateX(-50%);
  background: var(--bg-elev-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  font: 500 12px var(--font-sans);
  box-shadow: 0 8px 24px -8px rgba(0,0,0,.4);
  z-index: 50;
  animation: toastIn var(--dur) var(--ease);
  display: flex; align-items: center; gap: 10px;
}
.toast button {
  border: 0; background: transparent;
  color: var(--accent-text);
  font: 600 12px var(--font-sans);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
}
.toast button:hover { background: var(--accent-soft); }
@keyframes toastIn { from { opacity: 0; transform: translate(-50%, 6px); } to { opacity: 1; transform: translate(-50%, 0); } }

/* ============ RWD ============ */
@media (max-width: 1100px) {
  .board { grid-template-columns: 1fr 1fr; }
  .lane[data-zone="done"] { grid-column: 1 / -1; }
}
/* ============ mobile-only 漢堡 + drawer 元素(預設隱藏,>820px hidden 屬性持續生效) ============ */
.mobile-menu-btn {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 50;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0,0,0,.12);
}
.mobile-menu-btn:not([hidden]) { display: flex; }
.mobile-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 40;
}
.mobile-backdrop:not([hidden]) { display: block; }

@media (max-width: 820px) {
  .app { grid-template-columns: 1fr; }
  /* sidebar 變 drawer:預設滑出畫面外,加 .is-open 才滑入 */
  .sidebar {
    position: fixed;
    top: 0; left: 0;
    width: 280px;
    max-width: 86vw;
    height: 100vh;
    z-index: 45;
    transform: translateX(-100%);
    transition: transform .22s ease;
    overflow-y: auto;
    overflow-x: hidden;
    border-right: 1px solid var(--border);
    border-bottom: 0;
    box-shadow: 2px 0 16px rgba(0,0,0,.18);
  }
  .sidebar.is-open { transform: translateX(0); }
  /* drawer 內所有 section 全保留,跟 desktop 一致 */
  .main {
    height: 100vh;
    padding-top: 56px;  /* 給漢堡按鈕留位 */
  }
  .board { grid-template-columns: 1fr; padding: 12px 14px 24px; }
  .lane[data-zone="done"] { grid-column: auto; }
  .header { padding: 14px 16px 12px; }
  .header__sub { display: none; }
  .cmdbar { padding: 10px 14px 0; }
  .cmdbar__inner { flex-wrap: wrap; }
  .item__id { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ============ Sidebar view-switch active ============ */
.sidebar__item.is-active {
  background: var(--accent-soft);
  color: var(--accent-text);
  font-weight: 600;
}
.sidebar__item.is-active svg { color: var(--accent-text); }
.sidebar__item > span:not(.tab__icon):not(.tab__count) {
  flex: 1; min-width: 0;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.sidebar__item kbd { flex-shrink: 0; margin-left: auto; }
.sidebar__item { gap: 9px; }

/* ============ View switch visibility ============ */
.main[data-view="agenda"] .board,
.main[data-view="agenda"] .cmdbar,
.main[data-view="calendar"] .board,
.main[data-view="calendar"] .cmdbar { display: none; }
.main[data-view="board"] .agenda,
.main[data-view="board"] .calendar-view,
.main[data-view="board"] #agendaHeader,
.main[data-view="board"] #calendarHeader { display: none !important; }
.main[data-view="agenda"] .calendar-view,
.main[data-view="agenda"] #calendarHeader { display: none !important; }
.main[data-view="calendar"] .agenda,
.main[data-view="calendar"] #agendaHeader { display: none !important; }
.main[data-view="agenda"] #agendaHeader { display: flex !important; }
.main[data-view="calendar"] #calendarHeader { display: flex !important; }
.main[data-view="agenda"] .header__progress { visibility: hidden; }
.main[data-view="calendar"] .header__progress { visibility: hidden; }

/* ============ Agenda (七日) — 仿 TickTick / Things ============ */
.agenda {
  display: grid;
  grid-template-columns: repeat(7, minmax(260px, 1fr));
  gap: 14px;
  padding: 12px 24px 28px;
  overflow-x: auto;
  overflow-y: auto;
  flex: 1;
  align-content: start;
  min-height: 0;
}
.agenda__col {
  display: flex; flex-direction: column;
  background: var(--bg-elev);
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  overflow: hidden;
  align-self: start;
  min-height: 240px;
  box-shadow: 0 1px 3px rgba(0,0,0,.04), 0 1px 2px rgba(0,0,0,.06);
}
[data-theme="dark"] .agenda__col {
  box-shadow: 0 1px 0 rgba(255,255,255,.02);
}
.agenda__col.is-today {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft), 0 1px 3px rgba(0,0,0,.06);
}
.agenda__head {
  padding: 16px 16px 10px;
  display: flex; align-items: baseline; gap: 10px;
  background: transparent;
  border-bottom: 0;
}
.agenda__day {
  font: 700 18px var(--heading-font);
  color: var(--text);
  letter-spacing: -.02em;
}
.agenda__col.is-today .agenda__day { color: var(--accent-text); }
.agenda__date {
  font: 500 13px var(--font-sans);
  color: var(--text-soft);
}
.agenda__col.is-overdue .agenda__day { color: var(--c-priority); }
.agenda__list {
  list-style: none; margin: 0;
  padding: 4px 10px 10px;
  display: flex; flex-direction: column; gap: 6px;
  flex: 1;
}
.agenda__empty {
  display: block;
  color: var(--text-mute); font: 500 12.5px var(--font-sans);
  padding: 8px 6px;
  opacity: .6;
}
.agenda__add {
  display: flex; align-items: center; gap: 6px;
  margin: 6px 10px 12px;
  padding: 8px 10px;
  background: transparent;
  border: 0;
  border-radius: 6px;
  color: var(--text-mute);
  font: 500 13px var(--font-sans);
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
  text-align: left;
}
.agenda__add:hover { background: var(--bg-hover); color: var(--text); }
.agenda__add::before { content: "+"; font-size: 16px; line-height: 1; color: var(--text-mute); }

/* 卡片化的 agenda item */
.agenda__item {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 10px 12px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
}
.agenda__item:hover { background: var(--bg-hover); border-color: var(--border); }
.agenda__item.is-done { opacity: .55; }
.agenda__item.is-done .item__title { text-decoration: line-through; color: var(--text-mute); }
.agenda__item .item__check {
  margin-top: 2px; flex-shrink: 0;
}
.agenda__item .item__body {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column; gap: 4px;
}
.agenda__source {
  font: 500 10.5px var(--font-sans);
  color: var(--text-mute);
  display: flex; align-items: center; gap: 4px;
  letter-spacing: .01em;
}
.agenda__source svg { flex-shrink: 0; opacity: .7; }
.agenda__item .item__title {
  font: 500 13.5px var(--font-sans);
  color: var(--text);
  white-space: normal;
  line-height: 1.4;
  letter-spacing: -.005em;
}
.agenda__item.is-priority { border-left: 3px solid var(--c-priority); }

/* ============ Calendar — 仿圖 2 mobile-first ============ */
.calendar-view {
  display: flex; flex-direction: column;
  padding: 12px 24px 24px;
  overflow: auto;
  flex: 1;
  gap: 16px;
  min-height: 0;
  max-width: 760px;
  margin: 0 auto;
  width: 100%;
}
.cal__head { display: flex; align-items: center; gap: 10px; padding: 0 4px; }
.cal__title {
  margin: 0;
  font: 600 19px var(--heading-font);
  color: var(--text);
  letter-spacing: -.015em;
  flex: 1;
  text-align: center;
}
.iconbtn {
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent;
  border: 0;
  border-radius: 999px;
  color: var(--text-soft);
  font-size: 20px;
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
}
.iconbtn:hover { background: var(--bg-hover); color: var(--text); }
.cal__today {
  border: 0;
  background: transparent;
  color: var(--accent-text);
  font: 600 13px var(--font-sans);
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease);
}
.cal__today:hover { background: var(--accent-soft); }
.cal__weekdays {
  display: grid; grid-template-columns: repeat(7, 1fr);
  gap: 0;
  font: 500 11.5px var(--font-sans);
  color: var(--text-mute);
  text-transform: none;
  letter-spacing: .02em;
  text-align: center;
  padding: 0 4px;
}
.cal__weekdays span { padding: 4px 0; }
.cal__grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  grid-auto-rows: minmax(48px, auto);
  gap: 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  padding: 0 4px;
}
.cal__day {
  display: flex; flex-direction: column; align-items: center;
  gap: 3px;
  padding: 6px 0 8px;
  border-radius: 0;
  background: transparent;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease);
  min-width: 0;
  position: relative;
  text-align: center;
  border: 0;
  font: inherit;
  color: inherit;
}
.cal__day:hover { background: var(--bg-hover); border-radius: 6px; }
.cal__day.is-other-month .cal__daynum { color: var(--text-mute); opacity: .5; }
.cal__daynum {
  font: 500 15px var(--font-sans);
  color: var(--text);
  width: 32px; height: 32px;
  line-height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 999px;
  letter-spacing: 0;
}
.cal__day.is-today .cal__daynum {
  background: var(--accent);
  color: white;
  font-weight: 600;
}
[data-style="paper"] .cal__day.is-today .cal__daynum { color: #1c1409; }
.cal__day.is-selected .cal__daynum {
  background: var(--accent);
  color: white;
  font-weight: 600;
}
.cal__day.is-today.is-selected .cal__daynum {
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
}
/* 日期下方紅點(有事項) */
.cal__dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--c-priority);
  display: block;
  margin-top: -2px;
}
.cal__dot.is-normal { background: var(--accent); }
.cal__dot.is-mixed { background: var(--c-priority); box-shadow: 0 0 0 1px var(--bg), 4px 0 0 var(--accent); }
.cal__dot.is-done-only { background: var(--c-done); opacity: .6; }
.cal__day.is-other-month .cal__dot { opacity: .35; }

/* hide chip rendering inside cells (we use dots now) */
.cal__chips { display: none; }
.cal__more { display: none; }

.cal__divider {
  height: 1px;
  background: var(--border-soft);
  margin: 4px 0;
}

.cal__agenda {
  display: flex; flex-direction: column;
  padding: 0;
  gap: 0;
}
.cal__agenda-group {
  background: transparent;
  border: 0;
  border-radius: 0;
  overflow: visible;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-soft);
}
.cal__agenda-group:last-child { border-bottom: 0; }
.cal__agenda-head {
  padding: 6px 4px 8px;
  background: transparent;
  border-bottom: 0;
  display: flex; align-items: baseline; gap: 8px;
}
.cal__agenda-day {
  font: 500 12.5px var(--font-sans);
  color: var(--text-soft);
  letter-spacing: 0;
}
.cal__agenda-group.is-overdue .cal__agenda-day { color: var(--c-priority); font-weight: 600; }
.cal__agenda-date { display: none; }
.cal__agenda-list {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 1px;
}

/* 列表項目:左側時間/標籤垂直線 + 右側 checkbox + 標題 */
.cal__agenda-list .item {
  display: grid;
  grid-template-columns: 56px 1fr;
  align-items: center;
  gap: 12px;
  padding: 10px 4px;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease);
  border-radius: 6px;
  position: relative;
}
.cal__agenda-list .item:hover { background: var(--bg-hover); }
.cal__agenda-list .item__time {
  font: 500 12px var(--font-sans);
  color: var(--text-mute);
  text-align: right;
  line-height: 1.3;
}
.cal__agenda-list .item__time small {
  display: block;
  font-size: 10.5px;
  margin-top: 1px;
  letter-spacing: .02em;
}
.cal__agenda-list .item__inner {
  display: flex; align-items: center; gap: 10px;
  background: var(--bg-elev);
  border-radius: 999px;
  padding: 8px 14px;
  min-width: 0;
}
.cal__agenda-list .item__inner .item__title {
  font: 500 13.5px var(--font-sans);
  color: var(--text);
  flex: 1;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.cal__agenda-list .item.is-done .item__title { text-decoration: line-through; color: var(--text-mute); }
.cal__agenda-list .item.is-priority .item__time { color: var(--c-priority); font-weight: 600; }
.cal__agenda-list .item.is-priority::before {
  content: "";
  position: absolute;
  left: 70px; top: 8px; bottom: 8px;
  width: 2px;
  background: var(--c-priority);
  border-radius: 1px;
}
.cal__agenda-list .item__source {
  font: 500 10.5px var(--font-sans);
  color: var(--text-mute);
  flex-shrink: 0;
  background: var(--bg-elev-2);
  padding: 2px 7px;
  border-radius: 4px;
}

/* 逾期 banner row(完整一行的紅色強調) */
.cal__agenda-overdue-banner {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 12px;
  padding: 10px 4px;
  align-items: center;
  border-bottom: 1px solid color-mix(in oklch, var(--c-priority) 25%, var(--border-soft));
  position: relative;
}
.cal__agenda-overdue-banner__label {
  font: 600 11.5px var(--font-sans);
  color: var(--c-priority);
  text-align: right;
  line-height: 1.25;
}
.cal__agenda-overdue-banner__label small {
  display: block;
  font-size: 10px;
  font-weight: 500;
  margin-top: 1px;
  color: var(--c-priority);
  opacity: .85;
}
.cal__agenda-overdue-banner__body {
  font: 500 13.5px var(--font-sans);
  color: var(--text);
}
.cal__agenda-overdue-banner::before {
  content: "";
  position: absolute;
  left: 70px;
  bottom: -1px;
  width: 60px;
  height: 2px;
  background: var(--c-priority);
}

@media (max-width: 720px) {
  .agenda { grid-template-columns: 1fr; padding: 12px 14px 24px; }
  .calendar-view { padding: 12px 14px 24px; }
  .cal__grid { grid-auto-rows: minmax(54px, 1fr); }
  .cal__chip { font-size: 9.5px; padding: 1px 3px; }
}

/* main fade between views */
.main { transition: opacity var(--dur) var(--ease); }
.main.is-fading { opacity: 0; }

/* hide tab title on agenda/calendar — these are cross-tab views */
.main[data-view="agenda"] .header,
.main[data-view="calendar"] .header { display: none; }

.view-header {
  padding: 18px 24px 0;
  display: flex; align-items: baseline; gap: 12px;
}
.view-header__title {
  margin: 0;
  font: 600 21px var(--heading-font);
  color: var(--text);
  letter-spacing: -.018em;
  white-space: nowrap;
}
.view-header__sub {
  font: 500 13px var(--font-sans);
  color: var(--text-soft);
  white-space: nowrap;
}

/* agenda priority pill */
.item__zone-pill {
  font: 600 9.5px var(--font-sans);
  letter-spacing: .04em;
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--bg-elev-2);
  color: var(--text-soft);
  border: 1px solid var(--border-soft);
  text-transform: uppercase;
}
.item__zone-pill.is-priority {
  color: var(--c-priority);
  border-color: color-mix(in oklch, var(--c-priority) 35%, var(--border));
  background: color-mix(in oklch, var(--c-priority) 10%, transparent);
}

/* agenda items inherit board item styling but override padding */
.agenda__item, .cal__agenda-list .item {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 8px;
  border-radius: 5px;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease);
}
.agenda__item:hover, .cal__agenda-list .item:hover { background: var(--bg-hover); }
.agenda__item.is-done .item__title, .cal__agenda-list .item.is-done .item__title {
  text-decoration: line-through;
  color: var(--text-mute);
}
.agenda__item .item__body, .cal__agenda-list .item .item__body { flex: 1; min-width: 0; }
.agenda__item .item__title, .cal__agenda-list .item .item__title {
  font: 500 12.5px var(--font-sans);
  color: var(--text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  display: block;
}
.agenda__item .item__meta, .cal__agenda-list .item .item__meta {
  display: flex; align-items: center; gap: 6px;
  flex-shrink: 0;
}

/* ============ Brain (共腦記憶) ============ */
.sidebar__brain { display: flex; flex-direction: column; gap: 2px; padding: 0 10px; }
.brain-tab {
  display: flex; align-items: center; gap: 9px;
  padding: 7px 10px;
  font: 500 13px var(--font-sans);
  color: var(--text-soft);
  background: transparent; border: 0;
  border-radius: 7px;
  cursor: pointer;
  text-align: left;
  transition: background .12s, color .12s;
  width: 100%;
}
.brain-tab:hover { background: var(--bg-hover); color: var(--text); }
.brain-tab.is-active {
  background: var(--bg-hover);
  color: var(--text);
  font-weight: 600;
}
.brain-tab__icon {
  width: 18px; height: 18px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px;
  flex-shrink: 0;
}
.brain-tab__label { flex: 1; }

/* brain view: hide todo-specific UI, show brain doc */
.main[data-view="brain"] .header,
.main[data-view="brain"] .cmdbar,
.main[data-view="brain"] .board,
.main[data-view="brain"] .agenda,
.main[data-view="brain"] .calendar-view,
.main[data-view="brain"] #agendaHeader,
.main[data-view="brain"] #calendarHeader { display: none !important; }

.brain-doc {
  /* 全寬捲動容器,scrollbar 落在 main 最右側 */
  padding: 8px max(32px, calc((100% - 820px) / 2)) 80px;
  font: 400 15px/1.78 var(--font-sans);
  color: var(--text);
  overflow-y: auto;
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
  box-sizing: border-box;
}
.brain-doc h1, .brain-doc h2, .brain-doc h3, .brain-doc h4 {
  font-family: var(--heading-font);
  color: var(--text);
  letter-spacing: -.012em;
  margin: 1.6em 0 .55em;
  line-height: 1.3;
}
.brain-doc h1 { font-size: 1.55rem; margin-top: 0.6em; }
.brain-doc h2 { font-size: 1.22rem; padding-bottom: 0.25em; border-bottom: 1px solid var(--border-soft, var(--border)); }
.brain-doc h3 { font-size: 1.05rem; }
.brain-doc h4 { font-size: 0.95rem; color: var(--text-soft); }
.brain-doc p { margin: 0 0 0.95em; }
.brain-doc ul, .brain-doc ol { margin: 0 0 1em; padding-left: 1.6em; }
.brain-doc li { margin: 0.18em 0; }
.brain-doc li > p { margin: 0.2em 0; }
.brain-doc strong { color: var(--text); font-weight: 600; }
.brain-doc em { color: var(--text-soft); font-style: italic; }
.brain-doc a { color: var(--accent, #4a8af0); text-decoration: none; border-bottom: 1px dashed currentColor; }
.brain-doc a:hover { border-bottom-style: solid; }
.brain-doc code {
  font: 500 0.86em var(--mono-font, 'JetBrains Mono', monospace);
  background: var(--bg-hover);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--text);
}
.brain-doc pre {
  background: var(--bg-soft, var(--bg-hover));
  border: 1px solid var(--border-soft, var(--border));
  border-radius: 8px;
  padding: 12px 14px;
  overflow-x: auto;
  font-size: 0.86rem;
  line-height: 1.6;
  margin: 0.5em 0 1.1em;
}
.brain-doc pre code { background: transparent; padding: 0; font-size: inherit; }
.brain-doc blockquote {
  margin: 0.5em 0 1em;
  padding: 0.4em 1em;
  color: var(--text-soft);
  border-left: 3px solid var(--border);
  background: var(--bg-hover);
  border-radius: 0 6px 6px 0;
}
.brain-doc hr { border: 0; border-top: 1px solid var(--border); margin: 1.8em 0; }
.brain-doc table {
  border-collapse: collapse;
  margin: 0.5em 0 1.2em;
  font-size: 0.92rem;
  width: 100%;
}
.brain-doc th, .brain-doc td {
  border: 1px solid var(--border);
  padding: 7px 10px;
  text-align: left;
  vertical-align: top;
}
.brain-doc th { background: var(--bg-hover); font-weight: 600; }
.brain-doc img { max-width: 100%; border-radius: 6px; }

/* mobile */
@media (max-width: 720px) {
  .brain-doc { padding: 8px 16px 60px; font-size: 14.5px; line-height: 1.7; }
  .brain-doc h1 { font-size: 1.35rem; }
  .brain-doc h2 { font-size: 1.12rem; }
}

/* brain doc / header 只在 brain view 顯示 */
.main:not([data-view="brain"]) #brainHeader,
.main:not([data-view="brain"]) #brainDoc { display: none !important; }

/* ============ YT 心得 iframe view ============ */
.yt-frame {
  width: 100%;
  flex: 1 1 auto;
  min-height: 0;
  border: 0;
  background: #0f1419;  /* match _yt.py dark theme */
  display: none;  /* default hidden, view-aware override below */
}
.main[data-view="yt"] .yt-frame { display: block; }

/* 進 yt view 時隱藏 todo / brain 元件 */
.main[data-view="yt"] .header,
.main[data-view="yt"] .cmdbar,
.main[data-view="yt"] .board,
.main[data-view="yt"] .agenda,
.main[data-view="yt"] .calendar-view,
.main[data-view="yt"] #agendaHeader,
.main[data-view="yt"] #calendarHeader,
.main[data-view="yt"] #brainHeader,
.main[data-view="yt"] #brainDoc { display: none !important; }

/* ============ Brain editor ============ */
.brain-edit-btn {
  margin-left: auto;
  background: var(--bg-elev);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  font: 500 12.5px var(--font-sans);
  cursor: pointer;
  transition: background .12s, color .12s;
}
.brain-edit-btn:hover { background: var(--bg-hover); color: var(--accent-text); }
.brain-edit-btn.is-editing { background: var(--accent-soft); color: var(--accent-text); border-color: var(--accent); }
.main:not([data-view="brain"]) .brain-edit-btn { display: none; }

.brain-editor {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding: 8px max(32px, calc((100% - 820px) / 2)) 0;
  box-sizing: border-box;
  width: 100%;
}
.main:not([data-view="brain"]) .brain-editor { display: none !important; }
.brain-editor[hidden] { display: none !important; }
.brain-editor.is-active ~ .brain-doc,
.brain-editor:not([hidden]) ~ .brain-doc { display: none; }
/* 顯示 editor 時隱藏 brain-doc */
.brain-editor:not([hidden]) { display: flex; }
.main[data-view="brain"] .brain-editor:not([hidden]) ~ #brainDoc,
#brainDoc.is-hidden-by-editor { display: none !important; }

.brain-editor__textarea {
  flex: 1 1 auto;
  min-height: 200px;
  background: var(--bg-elev);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 16px;
  font: 500 14px/1.7 var(--font-mono, monospace);
  resize: none;
  outline: none;
  box-sizing: border-box;
}
.brain-editor__textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--focus-ring); }
.brain-editor__actions {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 0 16px;
}
.brain-editor__hint { color: var(--text-soft); font-size: 12.5px; flex: 1; }
.brain-editor__hint.is-dirty { color: var(--c-warn); }
.brain-editor__btn {
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 7px 16px;
  font: 500 13px var(--font-sans);
  cursor: pointer;
  transition: background .12s, color .12s;
}
.brain-editor__btn--cancel { background: transparent; color: var(--text-soft); }
.brain-editor__btn--cancel:hover { background: var(--bg-hover); color: var(--text); }
.brain-editor__btn--save { background: var(--accent); color: #fff; border-color: var(--accent); font-weight: 600; }
.brain-editor__btn--save:hover { filter: brightness(1.08); }
.brain-editor__btn--save:disabled { opacity: 0.5; cursor: not-allowed; }

/* ============ 新增清單 ghost button ============ */
.sidebar__item--ghost {
  margin: 4px 10px 0;
  color: var(--text-soft);
  border: 1px dashed var(--border);
  background: transparent;
  font-size: 12.5px;
}
.sidebar__item--ghost:hover { color: var(--accent-text); border-color: var(--accent); }
.sidebar__item--ghost svg { opacity: 0.7; }

/* ============ 活動紀錄 (SHARED_MEM 鏡像) ============ */
.shared-doc {
  width: 100%;
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 8px max(32px, calc((100% - 820px) / 2)) 80px;
  box-sizing: border-box;
  font: 14.5px/1.7 var(--font-sans);
  color: var(--text);
  display: none;
}
.main[data-view="shared"] .shared-doc { display: block; }
.main:not([data-view="shared"]) #sharedHeader { display: none !important; }
.main[data-view="shared"] #sharedHeader { display: flex !important; align-items: center; }

/* 進 shared view 時隱藏其他 */
.main[data-view="shared"] .header,
.main[data-view="shared"] .cmdbar,
.main[data-view="shared"] .board,
.main[data-view="shared"] .agenda,
.main[data-view="shared"] .calendar-view,
.main[data-view="shared"] #agendaHeader,
.main[data-view="shared"] #calendarHeader,
.main[data-view="shared"] #brainHeader,
.main[data-view="shared"] #brainDoc,
.main[data-view="shared"] .yt-frame { display: none !important; }

/* 其他 view 時隱藏 shared 元件 */
.main[data-view="brain"] #sharedHeader,
.main[data-view="brain"] #sharedDoc,
.main[data-view="yt"] #sharedHeader,
.main[data-view="yt"] #sharedDoc { display: none !important; }

.shared-filter {
  margin-left: auto;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.shared-filter__chip {
  background: var(--bg-elev);
  color: var(--text-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px 11px;
  font: 500 12px var(--font-sans);
  cursor: pointer;
  transition: background .12s, color .12s;
}
.shared-filter__chip:hover { background: var(--bg-hover); color: var(--text); }
.shared-filter__chip.is-active {
  background: var(--accent-soft, rgba(74, 138, 240, 0.18));
  color: var(--accent-text, #4a8af0);
  border-color: var(--accent, #4a8af0);
}

.shared-entry {
  margin: 0 0 14px;
  padding: 12px 14px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.shared-entry__head {
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap;
  margin-bottom: 6px;
}
.shared-entry__ts {
  font: 500 12.5px var(--font-mono, monospace);
  color: var(--text-soft);
  white-space: nowrap;
}
.shared-entry__label {
  font: 600 11.5px var(--font-sans);
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(160, 160, 160, 0.15);
  color: var(--text-soft);
  white-space: nowrap;
}
.shared-entry__label[data-label="TG"] { background: rgba(74, 138, 240, 0.18); color: #7faaf5; }
.shared-entry__label[data-label="DESK"] { background: rgba(120, 200, 120, 0.16); color: #9ad99a; }
.shared-entry__label[data-label="BOTH"] { background: rgba(220, 180, 80, 0.18); color: #d8c87a; }
.shared-entry__label[data-label="小n"] { background: rgba(255, 140, 100, 0.18); color: #f0a48a; }
.shared-entry__label[data-label="小d"] { background: rgba(180, 120, 220, 0.18); color: #c89bd8; }
.shared-entry__label[data-label="小t"] { background: rgba(80, 200, 200, 0.18); color: #7ad0d0; }
.shared-entry__label[data-label="小馬"] { background: rgba(220, 180, 120, 0.18); color: #d8b878; }
.shared-entry__label[data-label="小c"] { background: rgba(140, 180, 240, 0.18); color: #a0bde8; }
.shared-entry__topic {
  font: 600 14px var(--font-sans);
  color: var(--text);
  flex: 1 1 auto;
}
.shared-entry__body {
  font: 13px/1.65 var(--font-mono, monospace);
  color: var(--text);
  white-space: pre-wrap;
  word-wrap: break-word;
  margin: 0;
}

.shared-block {
  margin: 5px 0;
  padding: 7px 10px 8px;
  border-radius: 6px;
  border-left: 3px solid transparent;
}
.shared-block + .shared-block { margin-top: 4px; }
.shared-block--roger {
  background: rgba(220, 180, 80, 0.08);
  border-left-color: rgba(220, 180, 80, 0.55);
}
.shared-block--ai {
  background: rgba(74, 138, 240, 0.08);
  border-left-color: rgba(74, 138, 240, 0.55);
}
.shared-block--meta {
  background: rgba(160, 160, 160, 0.07);
  border-left-color: rgba(160, 160, 160, 0.4);
}
.shared-block--raw {
  background: transparent;
  border-left-color: transparent;
  padding-left: 0;
}
.shared-block__label {
  font: 600 11.5px var(--font-sans);
  color: var(--text-soft);
  margin-bottom: 3px;
  letter-spacing: 0.02em;
}
.shared-block--roger .shared-block__label { color: #d8c87a; }
.shared-block--ai .shared-block__label { color: #7faaf5; }
.shared-block__text {
  font: 13px/1.65 var(--font-mono, monospace);
  color: var(--text);
  white-space: pre-wrap;
  word-wrap: break-word;
}

.shared-empty {
  color: var(--text-soft);
  text-align: center;
  padding: 40px 0;
  font: 13.5px var(--font-sans);
}

.shared-load-more {
  display: block;
  margin: 18px auto 0;
  padding: 8px 22px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  font: 500 13px var(--font-sans);
  cursor: pointer;
}
.shared-load-more:hover { background: var(--bg-hover); }
.shared-load-more:disabled { opacity: 0.5; cursor: not-allowed; }

@media (max-width: 720px) {
  .shared-doc { padding: 8px 16px 60px; font-size: 14px; }
  .shared-filter { width: 100%; margin-left: 0; }
  .shared-entry__head { gap: 8px; }
}

/* ============ Trello theme(2026-05-04) ============
   驗證來源:
   - #0079BF 品牌藍 → designpieces.com / atlassian engineering blog
   - 10 色 label palette → 同上
   - --dynamic-* CSS 變數架構 → atlassian engineering blog (verified WCAG AA 4.5:1)
   - #172B4D 文字色、#F4F5F7 lane bg → 訓練資料,本輪未直接驗證
   - 3px card border-radius、subtle drop shadow、hover lift → 訓練資料
*/
[data-style="trello"][data-theme="light"] {
  --bg:           #0079BF;
  --bg-elev:      #F4F5F7;
  --bg-elev-2:    #FFFFFF;
  --bg-hover:     #E4E6EB;
  --sidebar-bg:   #FAFBFC;
  --border:       rgba(9, 30, 66, 0.13);
  --border-soft:  rgba(9, 30, 66, 0.07);
  --text:         #172B4D;
  --text-soft:    #5E6C84;
  --text-mute:    #97A0AF;
  --accent:       #0079BF;
  --accent-soft:  rgba(0, 121, 191, 0.15);
  --accent-text:  #006BA1;
  --focus-ring:   rgba(0, 121, 191, 0.4);
  --c-priority:   #EB5A46;
  --c-normal:     #0079BF;
  --c-done:       #70B500;
  --c-warn:       #FF9F1A;
  --heading-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, "Noto Sans TC", sans-serif;
  --heading-weight: 700;
}
[data-style="trello"][data-theme="dark"] {
  --bg:           #1D2125;
  --bg-elev:      #2C3036;
  --bg-elev-2:    #3B4148;
  --bg-hover:     #454B53;
  --sidebar-bg:   #1D2125;
  --border:       rgba(255, 255, 255, 0.08);
  --border-soft:  rgba(255, 255, 255, 0.04);
  --text:         #B6C2CF;
  --text-soft:    #8C9BAB;
  --text-mute:    #738496;
  --accent:       #579DFF;
  --accent-soft:  rgba(87, 157, 255, 0.18);
  --accent-text:  #85B8FF;
  --focus-ring:   rgba(87, 157, 255, 0.4);
  --c-priority:   #FD9891;
  --c-normal:     #579DFF;
  --c-done:       #B7DDB0;
  --c-warn:       #F5CD47;
  --heading-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, "Noto Sans TC", sans-serif;
  --heading-weight: 700;
}

/* Trello-specific layout */
[data-style="trello"] body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, "Noto Sans TC", "PingFang TC", sans-serif;
}
[data-style="trello"] .lane {
  border-radius: 8px;
  background: var(--bg-elev);
  padding: 10px;
}
[data-style="trello"] .item {
  background: var(--bg-elev-2);
  border-radius: 3px;
  box-shadow: 0 1px 0 rgba(9, 30, 66, 0.25);
  transition: transform .12s, box-shadow .12s;
}
[data-style="trello"] .item:hover {
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(9, 30, 66, 0.25);
}
[data-theme="dark"][data-style="trello"] .item {
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.4);
}
[data-theme="dark"][data-style="trello"] .item:hover {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}
[data-style="trello"] .lane__title {
  font-weight: 700;
  color: var(--text);
  font-size: 14px;
  letter-spacing: 0.01em;
}
[data-style="trello"] .lane__count {
  color: var(--text-soft);
}
[data-style="trello"] .btn-primary {
  background: var(--accent);
  border-radius: 3px;
  font-weight: 600;
}
[data-style="trello"] .btn-primary:hover { filter: brightness(1.06); }

/* board area — Trello blue 整片背景 */
[data-style="trello"][data-theme="light"] .main { background: #0079BF; }
[data-style="trello"][data-theme="dark"] .main { background: #1D2125; }

[data-style="trello"][data-theme="light"] .header { background: rgba(0, 0, 0, 0.18); color: #fff; }
[data-style="trello"][data-theme="light"] .header__title h1,
[data-style="trello"][data-theme="light"] .header__sub,
[data-style="trello"][data-theme="light"] .header__progress-num,
[data-style="trello"][data-theme="light"] #progressLabel,
[data-style="trello"][data-theme="light"] #progressPct { color: #fff; }
[data-style="trello"][data-theme="light"] .progress-track { background: rgba(255, 255, 255, 0.2); }
[data-style="trello"][data-theme="light"] .progress-bar { background: #fff; }

[data-style="trello"][data-theme="light"] .cmdbar { background: transparent; }
[data-style="trello"][data-theme="light"] .cmdbar__inner {
  background: rgba(255, 255, 255, 0.92);
  border-radius: 3px;
  padding: 6px 10px;
}

[data-style="trello"] .agenda__col {
  border-radius: 8px;
  background: var(--bg-elev);
  padding: 10px;
}
[data-style="trello"] .agenda__item,
[data-style="trello"] .cal__agenda-list .item__inner {
  border-radius: 3px;
  background: var(--bg-elev-2);
  box-shadow: 0 1px 0 rgba(9, 30, 66, 0.25);
}
[data-style="trello"] .calendar-view { background: var(--bg-elev); border-radius: 8px; padding: 12px; }

/* sidebar 維持淡色,跟 Trello sidebar 一致(不要藍) */
[data-style="trello"][data-theme="light"] .sidebar {
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
}