/* ═══════════════════════════════════════════════════════
   NEXUS Task OS — style.css
   Aesthetic: Terminal-meets-luxury OS. Dark-first.
   Fonts: Space Mono (code/accent) + Outfit (UI)
   ═══════════════════════════════════════════════════════ */

/* ── CSS Variables ── */
:root {
  --font-mono: 'Space Mono', monospace;
  --font-ui:   'Outfit', sans-serif;
  --sidebar-w: 228px;
  --topbar-h:  58px;
  --radius:    12px;
  --radius-sm: 7px;
  --radius-xs: 4px;
  --ease:      cubic-bezier(0.16, 1, 0.3, 1);
  --fast:      0.15s var(--ease);
  --mid:       0.28s var(--ease);
  --slow:      0.45s var(--ease);
}

/* ── Dark Theme (default) ── */
[data-theme="dark"] {
  --bg:         #080b12;
  --bg2:        #0d1117;
  --bg3:        #131924;
  --surface:    #141b27;
  --surface2:   #1a2336;
  --surface3:   #1f2b40;
  --border:     rgba(255,255,255,0.065);
  --border2:    rgba(255,255,255,0.1);
  --text:       #e2e8f8;
  --text2:      #7a8cad;
  --text3:      #3d4f6d;
  --accent:     #00D9FF;
  --accent2:    #0099bb;
  --accent-glow:rgba(0,217,255,0.18);
  --green:      #06D6A0;
  --yellow:     #FFD166;
  --red:        #FF6B9D;
  --purple:     #A78BFA;
  --orange:     #FF6B35;
  --card-shadow:0 2px 16px rgba(0,0,0,0.35);
  --grid-line:  rgba(255,255,255,0.025);
}

/* ── Light Theme ── */
[data-theme="light"] {
  --bg:         #f4f6fb;
  --bg2:        #ffffff;
  --bg3:        #edf0f7;
  --surface:    #ffffff;
  --surface2:   #f0f3fa;
  --surface3:   #e8ecf6;
  --border:     rgba(0,0,0,0.07);
  --border2:    rgba(0,0,0,0.12);
  --text:       #0f172a;
  --text2:      #4a5880;
  --text3:      #9aabcc;
  --accent:     #0099cc;
  --accent2:    #007aaa;
  --accent-glow:rgba(0,153,204,0.15);
  --green:      #00a87e;
  --yellow:     #d4900a;
  --red:        #e03060;
  --purple:     #7c3aed;
  --orange:     #d44f0f;
  --card-shadow:0 2px 12px rgba(0,0,0,0.08);
  --grid-line:  rgba(0,0,0,0.03);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; }
body {
  font-family: var(--font-ui);
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  height: 100vh;
  transition: background var(--mid), color var(--mid);
}
button { font-family: var(--font-ui); cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: var(--font-ui); }
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 99px; }
::selection { background: var(--accent-glow); }

/* ── Ambient Canvas ── */
#ambient-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
}

/* ── App Shell ── */
#app-shell {
  display: flex;
  height: 100vh;
  position: relative;
  z-index: 1;
}

/* ══════════════════════════
   SIDEBAR
══════════════════════════ */
#sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow-y: auto;
  overflow-x: hidden;
  transition: transform var(--mid), background var(--mid);
  position: relative;
  z-index: 50;
}

/* Brand */
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 20px 18px 16px;
  border-bottom: 1px solid var(--border);
}
.brand-mark { color: var(--accent); flex-shrink: 0; filter: drop-shadow(0 0 8px var(--accent-glow)); }
.brand-name {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 2px;
  color: var(--text);
  line-height: 1;
}
.brand-tagline {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text3);
  letter-spacing: 1px;
  display: block;
  margin-top: 2px;
}

/* Stats pill */
.sidebar-stats-pill {
  margin: 14px 14px 0;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  padding: 10px 4px;
}
.pill-stat {
  flex: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.pill-stat span {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  display: block;
}
.pill-stat small { font-size: 0.65rem; color: var(--text3); }
.pill-stat.accent span { color: var(--accent); }
.pill-divider { width: 1px; height: 28px; background: var(--border2); }

/* Nav */
.sidebar-nav { padding: 16px 10px 4px; }
.nav-label {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 2px;
  color: var(--text3);
  text-transform: uppercase;
  padding: 0 8px;
  margin-bottom: 6px;
}
.nav-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--text2);
  transition: all var(--fast);
  position: relative;
  margin-bottom: 2px;
}
.nav-btn i { width: 16px; text-align: center; font-size: 0.8rem; }
.nav-btn:hover { background: var(--surface2); color: var(--text); }
.nav-btn.active {
  background: var(--surface2);
  color: var(--accent);
  font-weight: 600;
}
.nav-btn.active::before {
  content: '';
  position: absolute;
  left: 0; top: 20%; bottom: 20%;
  width: 2px;
  background: var(--accent);
  border-radius: 0 2px 2px 0;
  box-shadow: 0 0 8px var(--accent-glow);
}

/* Categories */
.sidebar-cats { padding: 8px 10px; flex: 1; }
.cat-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  color: var(--text2);
  transition: all var(--fast);
  margin-bottom: 1px;
  position: relative;
}
.cat-btn:hover { background: var(--surface2); color: var(--text); }
.cat-btn.active { background: var(--surface2); color: var(--text); font-weight: 600; }
.cat-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.cat-badge {
  margin-left: auto;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text3);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  padding: 1px 6px;
  border-radius: 99px;
  min-width: 20px;
  text-align: center;
}

/* Sidebar Footer */
.sidebar-footer {
  padding: 12px 10px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.icon-btn {
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text3);
  font-size: 0.82rem;
  transition: all var(--fast);
  background: transparent;
}
.icon-btn:hover { background: var(--surface2); color: var(--text); }

/* ══════════════════════════
   MAIN
══════════════════════════ */
#main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

/* ── Topbar ── */
#topbar {
  height: var(--topbar-h);
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  flex-shrink: 0;
  position: relative;
  z-index: 40;
}
#hamburger { display: none; color: var(--text2); }
#topbar-left { display: flex; flex-direction: column; min-width: 0; }
#topbar-left h1 {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 1px;
  line-height: 1;
  color: var(--text);
}
#breadcrumb { font-size: 0.7rem; color: var(--text3); margin-top: 2px; }

/* Search */
#search-box {
  flex: 1;
  max-width: 380px;
  position: relative;
  margin: 0 8px;
}
#search-box i {
  position: absolute;
  left: 11px; top: 50%;
  transform: translateY(-50%);
  color: var(--text3);
  font-size: 0.78rem;
  pointer-events: none;
}
#search-input {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 8px 32px 8px 32px;
  font-size: 0.82rem;
  color: var(--text);
  outline: none;
  transition: border-color var(--fast), box-shadow var(--fast);
}
#search-input::placeholder { color: var(--text3); }
#search-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
#search-count {
  position: absolute;
  right: 10px; top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text3);
}

#topbar-right { display: flex; align-items: center; gap: 8px; margin-left: auto; }
#sort-select {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text2);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  outline: none;
  cursor: pointer;
}
.btn-add {
  background: var(--accent);
  color: var(--bg);
  font-weight: 700;
  font-size: 0.82rem;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 7px;
  transition: all var(--fast);
  box-shadow: 0 0 16px var(--accent-glow);
}
.btn-add:hover { filter: brightness(1.1); transform: translateY(-1px); }
.btn-add:active { transform: translateY(0); }
.btn-add kbd {
  background: rgba(0,0,0,0.2);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  padding: 2px 5px;
  border-radius: 3px;
}

/* ── Filter Bar ── */
#filter-bar {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: flex-end;
  flex-shrink: 0;
  animation: slideDown var(--fast) forwards;
}
#filter-bar.hidden { display: none; }
@keyframes slideDown { from { opacity:0; transform:translateY(-6px); } to { opacity:1; transform:translateY(0); } }
.filter-group { display: flex; flex-direction: column; gap: 5px; }
.filter-group label { font-size: 0.62rem; font-family: var(--font-mono); letter-spacing: 1.5px; color: var(--text3); text-transform: uppercase; }
.chip-row { display: flex; gap: 5px; flex-wrap: wrap; }
.chip, .pchip {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text2);
  font-size: 0.75rem;
  padding: 4px 11px;
  border-radius: 99px;
  cursor: pointer;
  transition: all var(--fast);
  font-family: var(--font-ui);
}
.chip:hover, .pchip:hover { border-color: var(--accent); color: var(--accent); }
.chip.active, .pchip.active { background: var(--accent); border-color: var(--accent); color: var(--bg); font-weight: 600; }
.filter-group button {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text2);
  font-size: 0.75rem;
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; gap: 5px;
  transition: all var(--fast);
}
.filter-group button:hover { background: var(--surface2); color: var(--text); }
.danger-btn { color: var(--red) !important; }
.danger-btn:hover { background: rgba(255,107,157,0.1) !important; border-color: var(--red) !important; }

/* ── Views ── */
.view {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 20px;
  animation: viewIn var(--mid) var(--ease);
}
.view.hidden { display: none; }
@keyframes viewIn { from { opacity:0; transform:translateY(10px); } to { opacity:1; transform:translateY(0); } }

/* ══════════════════════════
   KANBAN BOARD
══════════════════════════ */
#kanban-board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  min-height: calc(100vh - var(--topbar-h) - 40px);
  align-items: start;
}
.kanban-col {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow: hidden;
  min-height: 200px;
  transition: box-shadow var(--fast);
}
.kanban-col.drag-over { box-shadow: 0 0 0 2px var(--accent), inset 0 0 24px var(--accent-glow); }
.kanban-col-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px 8px;
  border-bottom: 1px solid var(--border);
}
.col-ind { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.col-title { font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--text2); }
.col-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text3);
  padding: 1px 7px;
  border-radius: 99px;
}
.kanban-cards { padding: 6px 8px; display: flex; flex-direction: column; gap: 8px; min-height: 60px; flex: 1; }
.kanban-add-btn {
  width: 100%;
  padding: 9px;
  color: var(--text3);
  font-size: 0.78rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-top: 1px solid var(--border);
  transition: all var(--fast);
}
.kanban-add-btn:hover { background: var(--surface2); color: var(--accent); }

/* Kanban card */
.kanban-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 12px;
  cursor: grab;
  transition: all var(--fast);
  position: relative;
  border-left: 3px solid transparent;
  animation: cardPop var(--mid) var(--ease);
}
@keyframes cardPop { from { opacity:0; transform:scale(0.95); } to { opacity:1; transform:scale(1); } }
.kanban-card:hover { box-shadow: var(--card-shadow); transform: translateY(-2px); background: var(--surface2); }
.kanban-card.dragging { opacity: 0.35; cursor: grabbing; }
.kanban-card.k-done { opacity: 0.6; }
.kanban-card.k-done .kc-title { text-decoration: line-through; color: var(--text3); }
.kc-title { font-size: 0.84rem; font-weight: 600; color: var(--text); margin-bottom: 6px; line-height: 1.4; }
.kc-meta { display: flex; flex-wrap: wrap; gap: 5px; align-items: center; }
.kc-badge {
  font-size: 0.62rem;
  padding: 2px 7px;
  border-radius: 99px;
  font-weight: 600;
}
.kc-effort { background: var(--bg3); color: var(--text3); font-family: var(--font-mono); }
.kc-priority-high { background: rgba(255,107,157,0.15); color: var(--red); }
.kc-priority-medium { background: rgba(255,209,102,0.15); color: var(--yellow); }
.kc-priority-low { background: rgba(6,214,160,0.15); color: var(--green); }
.kc-due { font-size: 0.62rem; color: var(--text3); margin-left: auto; }
.kc-due.overdue { color: var(--red); }
.kc-subtask-bar { margin-top: 7px; height: 3px; background: var(--bg3); border-radius: 99px; overflow: hidden; }
.kc-subtask-fill { height: 100%; background: var(--accent); border-radius: 99px; transition: width var(--mid); }
.kc-actions { position: absolute; top: 8px; right: 8px; display: flex; gap: 3px; opacity: 0; transition: opacity var(--fast); }
.kanban-card:hover .kc-actions { opacity: 1; }
.kc-action-btn { width: 24px; height: 24px; border-radius: 5px; display: flex; align-items: center; justify-content: center; font-size: 0.7rem; color: var(--text3); transition: all var(--fast); }
.kc-action-btn:hover { background: var(--bg3); color: var(--text); }
.kc-action-btn.del:hover { background: rgba(255,107,157,0.15); color: var(--red); }

/* ══════════════════════════
   LIST VIEW
══════════════════════════ */
#task-list { display: flex; flex-direction: column; gap: 8px; }

.task-row {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 13px 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: grab;
  transition: all var(--fast);
  border-left: 3px solid var(--card-accent, var(--accent));
  animation: cardPop var(--mid) var(--ease);
  position: relative;
}
.task-row:hover { box-shadow: var(--card-shadow); transform: translateY(-1px); background: var(--surface2); }
.task-row.dragging { opacity: 0.3; cursor: grabbing; }
.task-row.row-done { opacity: 0.55; }
.task-row.row-done .tr-title { text-decoration: line-through; color: var(--text3); }
.task-row.drop-target { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-glow); }

/* Checkbox */
.tr-check {
  width: 20px; height: 20px; min-width: 20px;
  border: 1.5px solid var(--border2);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  margin-top: 1px;
  transition: all var(--fast);
  font-size: 9px;
  color: transparent;
  flex-shrink: 0;
}
.tr-check:hover { border-color: var(--green); }
.tr-check.checked { background: var(--green); border-color: var(--green); color: white; }

.tr-select {
  width: 15px; height: 15px; min-width: 15px;
  border: 1.5px solid var(--border2);
  border-radius: 3px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  margin-top: 3px;
  font-size: 8px;
  color: transparent;
  flex-shrink: 0;
  transition: all var(--fast);
}
.tr-select.selected { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.tr-select:hover { border-color: var(--accent); }

.tr-body { flex: 1; min-width: 0; }
.tr-title { font-size: 0.9rem; font-weight: 600; color: var(--text); margin-bottom: 3px; }
.tr-desc { font-size: 0.78rem; color: var(--text2); margin-bottom: 7px; line-height: 1.5; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tr-meta { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }

.badge {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 0.68rem; font-weight: 600; padding: 2px 8px; border-radius: 99px;
}
.badge-cat { background: var(--bg3); color: var(--text2); }
.badge-high { background: rgba(255,107,157,0.15); color: var(--red); }
.badge-medium { background: rgba(255,209,102,0.15); color: var(--yellow); }
.badge-low { background: rgba(6,214,160,0.15); color: var(--green); }
.badge-due { background: var(--bg3); color: var(--text3); font-family: var(--font-mono); font-size: 0.62rem; }
.badge-due.overdue { background: rgba(255,107,157,0.15); color: var(--red); }
.badge-due.due-soon { background: rgba(255,209,102,0.15); color: var(--yellow); }
.badge-effort { background: var(--bg3); color: var(--text3); font-family: var(--font-mono); }

/* Subtask mini-bar */
.tr-subtask-bar { margin-top: 6px; height: 3px; background: var(--bg3); border-radius: 99px; overflow: hidden; max-width: 120px; }
.tr-subtask-fill { height: 100%; background: var(--accent); border-radius: 99px; transition: width var(--mid); }

.tr-actions { display: flex; gap: 3px; opacity: 0; transition: opacity var(--fast); flex-shrink: 0; }
.task-row:hover .tr-actions { opacity: 1; }
.tr-action {
  width: 28px; height: 28px; border-radius: var(--radius-xs); display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; color: var(--text3); transition: all var(--fast);
}
.tr-action:hover { background: var(--bg3); color: var(--text); }
.tr-action.del:hover { background: rgba(255,107,157,0.12); color: var(--red); }

/* Empty state */
#empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--text3);
}
#empty-state.hidden { display: none; }
.empty-glyph { font-size: 4rem; display: block; margin-bottom: 16px; font-family: var(--font-mono); opacity: 0.3; }
#empty-state p { font-size: 1rem; font-weight: 600; margin-bottom: 6px; color: var(--text2); }
#empty-state small { font-size: 0.78rem; }
#empty-state kbd { background: var(--bg3); border: 1px solid var(--border2); padding: 2px 7px; border-radius: 4px; font-family: var(--font-mono); font-size: 0.7rem; }

/* ══════════════════════════
   ANALYTICS
══════════════════════════ */
.analytics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  grid-template-areas:
    "sc1 sc2 sc3 sc4"
    "ring ring heatmap heatmap"
    "pchart cchart velocity velocity";
}
#sc-total    { grid-area: sc1; }
#sc-done     { grid-area: sc2; }
#sc-overdue  { grid-area: sc3; }
#sc-streak   { grid-area: sc4; }
.ring-card   { grid-area: ring; }
.heatmap-card{ grid-area: heatmap; }
.chart-card:first-of-type { grid-area: pchart; }
.chart-card:last-of-type  { grid-area: cchart; }
.velocity-card{ grid-area: velocity; }

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: all var(--fast);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--card-shadow); }
.sc-icon { font-size: 1.6rem; flex-shrink: 0; }
.sc-val { font-family: var(--font-mono); font-size: 1.8rem; font-weight: 700; line-height: 1; }
.sc-label { font-size: 0.72rem; color: var(--text2); margin-top: 3px; text-transform: uppercase; letter-spacing: 0.5px; }

.analytics-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  transition: all var(--fast);
}
.analytics-card:hover { box-shadow: var(--card-shadow); }
.analytics-card h3 { font-family: var(--font-mono); font-size: 0.72rem; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--text2); margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.analytics-card h3 small { font-size: 0.6rem; color: var(--text3); font-weight: 400; letter-spacing: 0; }

/* Ring chart */
.ring-wrap { display: flex; justify-content: center; }
.ring-svg { width: 140px; height: 140px; }
.ring-bg { fill: none; stroke: var(--bg3); stroke-width: 12; }
.ring-fg {
  fill: none;
  stroke: var(--accent);
  stroke-width: 12;
  stroke-linecap: round;
  transform: rotate(-90deg);
  transform-origin: 60px 60px;
  stroke-dasharray: 301.6;
  transition: stroke-dashoffset 0.8s var(--ease);
  filter: drop-shadow(0 0 6px var(--accent-glow));
}
.ring-pct { font-family: var(--font-mono); font-size: 16px; font-weight: 700; fill: var(--text); }

/* Heatmap */
#heatmap-wrap {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 3px;
  margin-bottom: 10px;
}
.hcol { display: flex; flex-direction: column; gap: 3px; }
.hcell {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 2px;
  background: var(--accent);
  transition: opacity var(--fast), transform var(--fast);
  cursor: default;
}
.hcell:hover { transform: scale(1.4); }
.heatmap-legend { display: flex; align-items: center; gap: 6px; font-size: 0.65rem; color: var(--text3); }
.legend-cells { display: flex; gap: 3px; }
.legend-cells .hcell { width: 12px; height: 12px; }

/* Canvas charts */
#priority-canvas, #category-canvas, #velocity-canvas { display: block; width: 100%; }

/* ══════════════════════════
   TODAY VIEW
══════════════════════════ */
.today-hero {
  margin-bottom: 20px;
  padding: 24px;
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface2) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}
.today-hero::after {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 160px; height: 160px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}
.today-date { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 2px; color: var(--text3); text-transform: uppercase; margin-bottom: 4px; }
.today-quote { font-size: 1.1rem; font-weight: 300; color: var(--text); line-height: 1.5; font-style: italic; }
.today-progress-wrap { margin-bottom: 20px; }
.today-progress-labels { display: flex; justify-content: space-between; font-size: 0.75rem; color: var(--text2); margin-bottom: 6px; font-family: var(--font-mono); }
.today-bar-wrap { height: 6px; background: var(--bg3); border-radius: 99px; overflow: hidden; }
.today-bar { height: 100%; background: linear-gradient(90deg, var(--accent), var(--green)); border-radius: 99px; transition: width 0.7s var(--ease); }

/* ══════════════════════════
   POMODORO
══════════════════════════ */
#pomodoro-wrap {
  max-width: 420px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}
#pomo-mode-tabs {
  display: flex;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px;
  gap: 4px;
}
.pomo-tab {
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text2);
  transition: all var(--fast);
}
.pomo-tab:hover { color: var(--text); }
.pomo-tab.active { background: var(--accent); color: var(--bg); }

#pomo-clock {
  position: relative;
  width: 220px; height: 220px;
}
#pomo-ring-svg { width: 220px; height: 220px; position: absolute; top: 0; left: 0; transform: rotate(-90deg); }
#pomo-ring-bg { fill: none; stroke: var(--bg3); stroke-width: 8; }
#pomo-ring-fg {
  fill: none; stroke: var(--accent); stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 628.3;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1s linear, stroke var(--mid);
  filter: drop-shadow(0 0 8px var(--accent-glow));
}
#pomo-time-display {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
}
#pomo-time { font-family: var(--font-mono); font-size: 2.6rem; font-weight: 700; color: var(--text); }
#pomo-session-label { font-size: 0.7rem; color: var(--text3); letter-spacing: 1px; text-transform: uppercase; margin-top: 4px; }

#pomo-controls { display: flex; gap: 12px; }
.pomo-btn {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--bg);
  font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--fast);
  box-shadow: 0 0 20px var(--accent-glow);
}
.pomo-btn:hover { filter: brightness(1.1); transform: scale(1.05); }
.pomo-secondary { background: var(--surface); color: var(--text2); box-shadow: none; border: 1px solid var(--border); }
.pomo-secondary:hover { background: var(--surface2); }

#pomo-sessions { display: flex; gap: 10px; }
.pomo-dot { width: 10px; height: 10px; border-radius: 50%; border: 2px solid var(--border2); transition: all var(--mid); }
.pomo-dot.active { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 8px var(--accent-glow); }
.pomo-dot.done { background: var(--green); border-color: var(--green); }

#pomo-linked-task { width: 100%; display: flex; flex-direction: column; gap: 5px; }
#pomo-linked-task label { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text3); }
#pomo-task-select {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  color: var(--text);
  font-size: 0.82rem;
  outline: none;
  cursor: pointer;
}
#pomo-log-wrap { width: 100%; }
#pomo-log-wrap h4 { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text3); margin-bottom: 10px; }
#pomo-log { display: flex; flex-direction: column; gap: 6px; max-height: 160px; overflow-y: auto; }
.pomo-log-entry {
  display: flex; align-items: center; gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 0.78rem;
  animation: cardPop var(--fast) var(--ease);
}
.pomo-log-entry .ple-icon { font-size: 0.9rem; }
.pomo-log-entry .ple-time { font-family: var(--font-mono); font-size: 0.65rem; color: var(--text3); margin-left: auto; }

/* ══════════════════════════
   COMMAND PALETTE
══════════════════════════ */
#cmd-overlay {
  display: none;
  position: fixed; inset: 0; z-index: 900;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(8px);
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
  animation: overlayIn 0.15s ease;
}
#cmd-overlay.open { display: flex; }
@keyframes overlayIn { from { opacity:0; } to { opacity:1; } }

#cmd-palette {
  width: 100%;
  max-width: 560px;
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  box-shadow: 0 24px 80px rgba(0,0,0,0.5);
  overflow: hidden;
  animation: paletteIn 0.2s var(--ease);
}
@keyframes paletteIn { from { opacity:0; transform:scale(0.96) translateY(-12px); } to { opacity:1; transform:scale(1) translateY(0); } }

#cmd-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
#cmd-header i { color: var(--accent); font-size: 0.85rem; }
#cmd-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text);
}
#cmd-input::placeholder { color: var(--text3); }
#cmd-header kbd { font-family: var(--font-mono); font-size: 0.65rem; background: var(--bg3); border: 1px solid var(--border2); padding: 2px 7px; border-radius: 4px; color: var(--text3); }

#cmd-results { max-height: 320px; overflow-y: auto; padding: 6px; }
.cmd-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.84rem;
  color: var(--text2);
  transition: all var(--fast);
}
.cmd-item:hover, .cmd-item.active { background: var(--surface2); color: var(--text); }
.cmd-item i { width: 16px; text-align: center; color: var(--accent); font-size: 0.8rem; }
.cmd-item-sub { font-size: 0.7rem; color: var(--text3); margin-left: auto; }
.cmd-separator { font-family: var(--font-mono); font-size: 0.58rem; letter-spacing: 2px; text-transform: uppercase; color: var(--text3); padding: 8px 12px 4px; }

#cmd-footer {
  display: flex; gap: 16px;
  padding: 9px 18px;
  border-top: 1px solid var(--border);
  font-size: 0.65rem; color: var(--text3);
}
#cmd-footer kbd { font-family: var(--font-mono); background: var(--bg3); border: 1px solid var(--border2); padding: 1px 5px; border-radius: 3px; }

/* ══════════════════════════
   MODALS
══════════════════════════ */
.modal-overlay {
  display: none;
  position: fixed; inset: 0; z-index: 800;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(10px);
  align-items: center; justify-content: center;
  padding: 20px;
  animation: overlayIn 0.15s ease;
}
.modal-overlay.open { display: flex; }

.modal {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: 16px;
  width: 100%;
  max-width: 760px;
  max-height: 92vh;
  overflow-y: auto;
  box-shadow: 0 32px 80px rgba(0,0,0,0.5);
  animation: paletteIn 0.25s var(--ease);
}
.confirm-modal { max-width: 400px; padding: 24px; }

.modal-topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px 0;
  margin-bottom: 8px;
}
.modal-eyebrow { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 3px; color: var(--accent); text-transform: uppercase; }
.modal-x { width: 30px; height: 30px; border-radius: 8px; display: flex; align-items: center; justify-content: center; color: var(--text3); font-size: 0.9rem; transition: all var(--fast); }
.modal-x:hover { background: var(--bg3); color: var(--text); }

.modal-title-wrap { padding: 0 24px 14px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; }
.modal-title-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  font-family: var(--font-ui);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
}
.modal-title-input::placeholder { color: var(--text3); }
.char-count { font-family: var(--font-mono); font-size: 0.62rem; color: var(--text3); }

.modal-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.modal-left { padding: 18px 20px 18px 24px; border-right: 1px solid var(--border); }
.modal-right { padding: 18px 24px 18px 20px; }

.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text3); margin-bottom: 7px; }
.form-group label small { font-size: 0.55rem; font-weight: 400; letter-spacing: 0; text-transform: none; font-family: var(--font-ui); }
.form-group textarea, .form-group input[type="date"], .form-group input[type="time"], .form-group input[type="text"] {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  color: var(--text);
  font-size: 0.84rem;
  outline: none;
  transition: border-color var(--fast), box-shadow var(--fast);
  resize: none;
}
.form-group textarea:focus, .form-group input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.form-group textarea::placeholder, .form-group input::placeholder { color: var(--text3); }

.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.opt-grid { display: flex; flex-wrap: wrap; gap: 5px; }
.opt-btn {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text2);
  font-size: 0.76rem;
  padding: 5px 12px;
  border-radius: 99px;
  cursor: pointer;
  display: flex; align-items: center; gap: 5px;
  transition: all var(--fast);
}
.opt-btn:hover { border-color: var(--accent); color: var(--text); }
.opt-btn.active { background: var(--accent); border-color: var(--accent); color: var(--bg); font-weight: 600; }

.eff-btn {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text2);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  width: 32px; height: 28px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--fast);
}
.eff-btn:hover { border-color: var(--accent); }
.eff-btn.active { background: var(--accent); border-color: var(--accent); color: var(--bg); }

/* Subtasks */
#subtask-list { display: flex; flex-direction: column; gap: 5px; margin-bottom: 8px; min-height: 4px; }
.subtask-item {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: 6px 10px;
  font-size: 0.8rem;
  animation: cardPop var(--fast) var(--ease);
}
.subtask-check { width: 16px; height: 16px; border: 1.5px solid var(--border2); border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; font-size: 8px; color: transparent; flex-shrink: 0; transition: all var(--fast); }
.subtask-check:hover { border-color: var(--green); }
.subtask-check.done { background: var(--green); border-color: var(--green); color: white; }
.subtask-text { flex: 1; }
.subtask-text.done { text-decoration: line-through; color: var(--text3); }
.subtask-del { color: var(--text3); font-size: 0.7rem; cursor: pointer; transition: color var(--fast); }
.subtask-del:hover { color: var(--red); }
.subtask-prog { font-family: var(--font-mono); font-size: 0.58rem; color: var(--accent); margin-left: 6px; }
.subtask-add-row { display: flex; gap: 6px; }
.subtask-add-row input { flex: 1; background: var(--bg3); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 7px 10px; color: var(--text); font-size: 0.8rem; outline: none; }
.subtask-add-row input:focus { border-color: var(--accent); }
.subtask-add-row button { background: var(--accent); color: var(--bg); width: 30px; height: 30px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 0.8rem; transition: all var(--fast); }
.subtask-add-row button:hover { filter: brightness(1.1); }

/* Color swatches */
.swatch-row { display: flex; gap: 7px; flex-wrap: wrap; }
.sw-btn { width: 24px; height: 24px; border-radius: 50%; border: 3px solid transparent; cursor: pointer; transition: all var(--fast); }
.sw-btn:hover { transform: scale(1.2); }
.sw-btn.selected { border-color: var(--text); transform: scale(1.15); }

.modal-footer {
  display: flex; align-items: center; justify-content: flex-end; gap: 10px;
  padding: 14px 24px 18px;
  border-top: 1px solid var(--border);
}
.ghost-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text2);
  font-size: 0.82rem;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  transition: all var(--fast);
}
.ghost-btn:hover { background: var(--bg3); color: var(--text); }
.save-btn {
  background: var(--accent);
  color: var(--bg);
  font-weight: 700;
  font-size: 0.84rem;
  padding: 9px 22px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; gap: 7px;
  transition: all var(--fast);
  box-shadow: 0 0 16px var(--accent-glow);
}
.save-btn:hover { filter: brightness(1.1); transform: translateY(-1px); }

/* ══════════════════════════
   TOAST
══════════════════════════ */
#toast-container { position: fixed; bottom: 20px; right: 20px; z-index: 1000; display: flex; flex-direction: column; gap: 8px; pointer-events: none; }
.toast {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 11px 16px;
  font-size: 0.82rem;
  color: var(--text);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
  display: flex; align-items: center; gap: 10px;
  pointer-events: all;
  min-width: 240px;
  animation: toastIn 0.3s var(--ease);
  border-left: 3px solid var(--accent);
}
.toast.success { border-left-color: var(--green); }
.toast.error   { border-left-color: var(--red); }
.toast.warning { border-left-color: var(--yellow); }
.toast i { font-size: 0.85rem; }
@keyframes toastIn  { from { opacity:0; transform:translateX(24px); } to { opacity:1; transform:translateX(0); } }
@keyframes toastOut { from { opacity:1; transform:translateX(0); } to { opacity:0; transform:translateX(24px); } }
.toast.out { animation: toastOut 0.25s var(--ease) forwards; }

/* ══════════════════════════
   RESPONSIVE
══════════════════════════ */
#sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 49; }
#sidebar-overlay.show { display: block; }

@media (max-width: 1100px) {
  #kanban-board { grid-template-columns: repeat(2, 1fr); }
  .analytics-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-areas: "sc1 sc2" "sc3 sc4" "ring heatmap" "pchart cchart" "velocity velocity";
  }
}

@media (max-width: 900px) {
  .modal-cols { grid-template-columns: 1fr; }
  .modal-left { border-right: none; border-bottom: 1px solid var(--border); }
  .modal { max-height: 95vh; overflow-y: auto; }
}

@media (max-width: 768px) {
  /* Sidebar slide in */
  #sidebar {
    position: fixed; top: 0; left: 0; bottom: 0;
    transform: translateX(-100%);
    z-index: 50;
    transition: transform var(--mid);
    width: 260px;
  }
  #sidebar.open { transform: translateX(0); box-shadow: 4px 0 30px rgba(0,0,0,0.4); }
  #hamburger { display: flex !important; }

  /* Body overflow when sidebar open */
  body.sidebar-open { overflow: hidden; }

  /* Main takes full width */
  #app-shell { overflow: hidden; }
  #main { width: 100%; overflow-x: hidden; }

  /* Topbar */
  #topbar { padding: 0 12px; gap: 8px; height: 52px; }
  #topbar-left h1 { font-size: 0.82rem; }
  #breadcrumb { display: none; }
  #search-box { display: none; }
  .btn-add kbd { display: none; }
  #sort-select { display: none; }

  /* Views */
  .view { padding: 10px; overflow-x: hidden; }

  /* Kanban — horizontal scroll on mobile */
  #view-board { padding: 10px 0; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  #kanban-board {
    grid-template-columns: repeat(4, 78vw);
    gap: 10px;
    padding: 0 10px 10px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .kanban-col { min-width: 78vw; }

  /* Analytics */
  .analytics-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "sc1 sc2"
      "sc3 sc4"
      "ring ring"
      "heatmap heatmap"
      "pchart cchart"
      "velocity velocity";
  }
  .ring-svg { width: 110px; height: 110px; }

  /* Heatmap smaller on mobile */
  #heatmap-wrap { gap: 2px; }
  .hcell { border-radius: 1px; }

  /* Filter bar */
  #filter-bar { gap: 12px; padding: 10px 12px; overflow-x: auto; flex-wrap: nowrap; }
  .filter-group { flex-shrink: 0; }
  .chip-row { flex-wrap: nowrap; }

  /* Task rows */
  .task-row { padding: 10px 12px; gap: 8px; }
  .tr-actions { opacity: 1; }
  .kc-actions { opacity: 1; }

  /* Pomodoro */
  #pomodoro-wrap { padding: 0 10px; gap: 18px; }
  #pomo-clock { width: 180px; height: 180px; }
  #pomo-ring-svg { width: 180px; height: 180px; }
  #pomo-time { font-size: 2.1rem; }
  #pomo-mode-tabs { width: 100%; justify-content: center; }
  .pomo-tab { padding: 7px 14px; font-size: 0.75rem; }

  /* Modal */
  .modal-overlay { padding: 0; align-items: flex-end; }
  .modal {
    border-radius: 18px 18px 0 0;
    max-height: 92vh;
    width: 100%;
    overflow-y: auto;
  }
  .confirm-modal {
    border-radius: 18px 18px 0 0;
    padding: 20px 18px;
  }
  .modal-topbar { padding: 16px 18px 0; }
  .modal-title-wrap { padding: 0 18px 12px; }
  .modal-left, .modal-right { padding: 14px 18px; }
  .modal-footer { padding: 12px 18px 24px; }
  .form-row-2 { grid-template-columns: 1fr 1fr; }

  /* Command palette */
  #cmd-palette { margin: 12px; border-radius: var(--radius); }
  #cmd-overlay { padding: 0; align-items: flex-start; padding-top: 60px; }

  /* Toast */
  #toast-container { bottom: 12px; right: 12px; left: 12px; }
  .toast { min-width: unset; width: 100%; }

  /* Today view */
  .today-hero { padding: 16px; }
  .today-quote { font-size: 0.95rem; }

  /* Stats pill */
  .sidebar-stats-pill { margin: 12px 10px 0; }
  .pill-stat span { font-size: 0.95rem; }
}

@media (max-width: 480px) {
  #topbar { padding: 0 10px; gap: 6px; height: 48px; }
  .btn-add span { display: none; }
  .btn-add { padding: 7px 10px; }

  .analytics-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "sc1 sc2"
      "sc3 sc4"
      "ring ring"
      "heatmap heatmap"
      "pchart pchart"
      "cchart cchart"
      "velocity velocity";
  }

  #kanban-board { grid-template-columns: repeat(4, 85vw); }
  .kanban-col { min-width: 85vw; }

  .stat-card { padding: 14px 12px; gap: 10px; }
  .sc-val { font-size: 1.5rem; }
  .sc-icon { font-size: 1.3rem; }

  #pomo-clock { width: 160px; height: 160px; }
  #pomo-ring-svg { width: 160px; height: 160px; }
  #pomo-time { font-size: 1.9rem; }

  .opt-grid { gap: 4px; }
  .opt-btn { font-size: 0.72rem; padding: 4px 10px; }

  .brand-name { font-size: 0.9rem; }
  .brand-tagline { font-size: 0.55rem; }
}