/* ============ Focus · Style ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-1: #0d0820;
  --bg-2: #1a0f3a;
  --bg-3: #2d1b69;
  --violet:    #8b5cf6;
  --violet-2:  #a78bfa;
  --violet-3:  #c4b5fd;
  --pink:      #ec4899;
  --mint:      #10b981;
  --gold:      #fbbf24;
  --red:       #ef4444;
  --text:      #f3f0ff;
  --muted:     rgba(243,240,255,.55);
  --faint:     rgba(243,240,255,.32);
  --safe-top: env(safe-area-inset-top, 0);
  --safe-bot: env(safe-area-inset-bottom, 0);
  --phase-color: var(--violet);
}

html, body {
  background: var(--bg-1);
  color: var(--text);
  font-family: 'Heebo', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overscroll-behavior: none;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  padding-top: calc(58px + var(--safe-top));
  padding-bottom: calc(28px + var(--safe-bot));
}

/* Ambient violet background */
.ambient-bg {
  position: fixed;
  inset: 0;
  z-index: -3;
  overflow: hidden;
  background: var(--bg-1);
}
.orb-blur {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .4;
  pointer-events: none;
  will-change: transform;
}
.orb-blur.o1 {
  width: 60vmax; height: 60vmax;
  background: radial-gradient(circle, var(--violet) 0%, transparent 60%);
  top: -20vh; left: -10vw;
  animation: drift1 28s ease-in-out infinite;
}
.orb-blur.o2 {
  width: 55vmax; height: 55vmax;
  background: radial-gradient(circle, var(--pink) 0%, transparent 60%);
  bottom: -20vh; right: -10vw;
  animation: drift2 32s ease-in-out infinite;
  opacity: .25;
}
@keyframes drift1 {
  0%, 100% { transform: translate(0,0) scale(1); }
  50%      { transform: translate(8vw, 6vh) scale(1.05); }
}
@keyframes drift2 {
  0%, 100% { transform: translate(0,0) scale(1); }
  50%      { transform: translate(-6vw, -8vh) scale(.95); }
}
.ambient-bg .grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(167,139,250,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(167,139,250,.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 30%, transparent 80%);
}

/* Top bar */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: calc(58px + var(--safe-top));
  padding-top: var(--safe-top);
  padding-inline: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(13,8,32,.75);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border-bottom: 1px solid rgba(167,139,250,.10);
  z-index: 100;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand .mark {
  width: 28px; height: 28px;
  background: linear-gradient(135deg, var(--violet), var(--pink));
  border-radius: 8px;
  position: relative;
  box-shadow: 0 6px 18px rgba(139,92,246,.55);
}
.brand .mark::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 8px;
  background:
    conic-gradient(from 0deg at 50% 50%, transparent 75%, rgba(255,255,255,.4) 100%);
}
.brand span:not(.mark) {
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
}
.streak-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: rgba(167,139,250,.10);
  border: 1px solid rgba(167,139,250,.25);
  border-radius: 999px;
  font-size: 12px;
  color: var(--muted);
  font-family: 'IBM Plex Mono', monospace;
}
.streak-pill .flame { font-size: 13px; }
.header-actions { display: flex; gap: 8px; }
.icon-btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(167,139,250,.18);
  background: rgba(167,139,250,.05);
  color: var(--text);
  cursor: pointer;
  display: grid; place-items: center;
  font-size: 16px;
  transition: background .2s, transform .15s;
}
.icon-btn:hover { background: rgba(167,139,250,.15); }
.icon-btn:active { transform: scale(.92); }
.install-btn {
  background: linear-gradient(135deg, var(--violet), var(--violet-2));
  color: #fff;
  border: none;
  padding: 8px 16px;
  border-radius: 999px;
  font-family: inherit;
  font-weight: 700;
  font-size: 12px;
  cursor: pointer;
  box-shadow: 0 6px 16px rgba(139,92,246,.5);
}
.hidden { display: none !important; }
[hidden] { display: none !important; }

main {
  padding: 16px 18px;
  max-width: 480px;
  margin: 0 auto;
}

/* Mode info */
.mode-info {
  text-align: center;
  margin-bottom: 18px;
}
.preset-name {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.cycle-info {
  font-size: 14px;
  color: var(--violet-3);
  font-weight: 500;
}

/* ============ TIMER STAGE ============ */
.timer-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 8px auto 28px;
  position: relative;
}
.timer-wrap {
  width: 320px; height: 320px;
  max-width: 84vw;
  max-height: 84vw;
  position: relative;
  display: grid;
  place-items: center;
}
.timer-ring {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.ring-track {
  fill: none;
  stroke: rgba(167,139,250,.10);
  stroke-width: 6;
}
.ring-fill {
  fill: none;
  stroke: var(--phase-color);
  stroke-width: 6;
  stroke-linecap: round;
  filter: drop-shadow(0 0 12px var(--phase-color));
  transition: stroke .35s ease, stroke-dashoffset .9s linear;
  transform-origin: 160px 160px;
}
/* Ring inner glow */
.timer-wrap::before {
  content: '';
  position: absolute;
  inset: 30px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 25%, rgba(196,181,253,.06), transparent 60%),
              radial-gradient(circle, rgba(13,8,32,.5) 60%, transparent 80%);
  border: 1px solid rgba(167,139,250,.12);
  box-shadow: inset 0 -10px 30px rgba(0,0,0,.4);
}

.timer-center {
  position: relative;
  z-index: 1;
  text-align: center;
  pointer-events: none;
}
.phase-label {
  font-size: 13px;
  font-family: 'IBM Plex Mono', monospace;
  letter-spacing: 3px;
  color: var(--phase-color);
  text-transform: uppercase;
  margin-bottom: 8px;
  font-weight: 500;
  transition: color .35s;
}
.time-display {
  font-size: 76px;
  font-weight: 300;
  letter-spacing: -0.04em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  text-shadow: 0 4px 20px rgba(0,0,0,.4);
}
.time-sub {
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
}

/* Phase color variations */
.timer-wrap.focus  { --phase-color: var(--violet); }
.timer-wrap.short-break { --phase-color: var(--mint); }
.timer-wrap.long-break  { --phase-color: var(--gold); }

/* Tag input */
.tag-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(167,139,250,.06);
  border: 1px solid rgba(167,139,250,.16);
  border-radius: 14px;
  padding: 10px 14px;
  margin-bottom: 14px;
}
.tag-icon { font-size: 16px; opacity: .6; }
.tag-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  outline: none;
}
.tag-input::placeholder { color: var(--faint); }
.tag-input:disabled { opacity: .6; }

/* Preset chips */
.preset-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-bottom: 18px;
}
.preset-chip {
  padding: 10px 4px;
  background: rgba(167,139,250,.06);
  border: 1px solid rgba(167,139,250,.14);
  border-radius: 12px;
  color: var(--muted);
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  transition: all .25s cubic-bezier(.2,.9,.3,1);
  font-variant-numeric: tabular-nums;
}
.preset-chip:hover { background: rgba(167,139,250,.12); color: var(--text); }
.preset-chip.active {
  background: rgba(139,92,246,.18);
  border-color: rgba(139,92,246,.5);
  color: var(--violet-2);
  box-shadow: 0 6px 14px -4px rgba(139,92,246,.4);
}

/* Action buttons */
.actions { display: flex; flex-direction: column; gap: 10px; margin-bottom: 18px; }
.btn-primary {
  width: 100%;
  padding: 18px;
  background: linear-gradient(135deg, var(--violet), var(--violet-2));
  color: #fff;
  border: none;
  border-radius: 999px;
  font-family: inherit;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 16px 40px -8px rgba(139,92,246,.55);
  transition: transform .15s;
}
.btn-primary:active { transform: scale(.97); }
.btn-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}
.btn-mini {
  padding: 13px;
  background: rgba(167,139,250,.06);
  border: 1px solid rgba(167,139,250,.18);
  color: var(--text);
  font-family: inherit;
  font-weight: 600;
  font-size: 13px;
  border-radius: 14px;
  cursor: pointer;
  transition: background .2s;
}
.btn-mini:hover { background: rgba(167,139,250,.12); }
.btn-mini.danger { color: var(--red); border-color: rgba(239,68,68,.3); background: rgba(239,68,68,.08); }
.btn-mini.danger:hover { background: rgba(239,68,68,.15); }
.btn-secondary {
  padding: 12px 18px;
  background: rgba(167,139,250,.06);
  border: 1px solid rgba(167,139,250,.18);
  color: var(--text);
  font-family: inherit;
  font-weight: 600;
  font-size: 14px;
  border-radius: 12px;
  cursor: pointer;
}
.btn-secondary:hover { background: rgba(167,139,250,.12); }

/* Cycle dots */
.cycles-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 8px;
}
.cycle-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(167,139,250,.18);
  transition: all .35s;
}
.cycle-dot.done {
  background: var(--violet);
  box-shadow: 0 0 10px var(--violet);
}
.cycle-dot.current {
  background: var(--violet-2);
  width: 24px;
  border-radius: 999px;
  box-shadow: 0 0 12px var(--violet-2);
}

/* Modal */
.modal {
  position: fixed; inset: 0;
  background: rgba(13,8,32,.78);
  backdrop-filter: blur(8px);
  z-index: 200;
  display: grid;
  place-items: end center;
  animation: modal-in .25s ease;
}
@keyframes modal-in { from { opacity: 0; } to { opacity: 1; } }
.modal-card {
  background: rgba(26,15,58,.94);
  backdrop-filter: blur(18px) saturate(160%);
  border: 1px solid rgba(167,139,250,.18);
  border-top-left-radius: 28px;
  border-top-right-radius: 28px;
  padding: 24px 22px calc(28px + var(--safe-bot));
  width: 100%;
  max-width: 480px;
  animation: sheet-up .35s cubic-bezier(.2,.9,.3,1.05);
}
@keyframes sheet-up { from { transform: translateY(100%); } to { transform: translateY(0); } }
.modal-card .handle {
  width: 38px; height: 4px;
  background: rgba(167,139,250,.30);
  border-radius: 2px;
  margin: -8px auto 16px;
}
.modal-card h3 {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.modal-card p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}
.mark-big {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--violet), var(--pink));
  border-radius: 14px;
  margin: 0 auto 14px;
  box-shadow: 0 10px 30px rgba(139,92,246,.5);
}
.setting-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-top: 1px solid rgba(167,139,250,.08);
}
.setting-row:first-of-type { border-top: 0; }
.setting-row strong { font-weight: 600; font-size: 14px; }
.setting-row .desc { font-size: 12px; color: var(--muted); margin-top: 2px; }

/* Toggle */
.toggle {
  width: 44px; height: 24px;
  border-radius: 999px;
  background: rgba(167,139,250,.18);
  position: relative;
  cursor: pointer;
  transition: background .2s;
  flex-shrink: 0;
}
.toggle::after {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--text);
  top: 3px; right: 3px;
  transition: transform .2s;
}
.toggle.on { background: var(--violet); }
.toggle.on::after { transform: translateX(-20px); }

.footer-mini {
  text-align: center;
  color: var(--faint);
  font-size: 11px;
  margin-top: 18px;
}
.footer-mini a { color: var(--violet-2); }

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 6px;
}
.stat-card {
  background: rgba(167,139,250,.06);
  border: 1px solid rgba(167,139,250,.14);
  border-radius: 16px;
  padding: 16px;
}
.stat-card .v {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.stat-card .k {
  font-size: 11px;
  color: var(--faint);
  margin-top: 4px;
  font-family: 'IBM Plex Mono', monospace;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.heatmap {
  display: grid;
  grid-template-columns: repeat(14, 1fr);
  gap: 4px;
  margin-top: 14px;
}
.heatmap .cell {
  aspect-ratio: 1;
  background: rgba(167,139,250,.05);
  border-radius: 4px;
  transition: background .2s;
}
.heatmap .cell.l1 { background: rgba(139,92,246,.20); }
.heatmap .cell.l2 { background: rgba(139,92,246,.40); }
.heatmap .cell.l3 { background: rgba(139,92,246,.65); }
.heatmap .cell.l4 { background: rgba(139,92,246,.90); box-shadow: 0 0 8px rgba(139,92,246,.4); }

.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}
.tag-pill {
  padding: 6px 12px;
  background: rgba(167,139,250,.10);
  border: 1px solid rgba(167,139,250,.20);
  border-radius: 999px;
  font-size: 12px;
  color: var(--violet-3);
  font-weight: 500;
}
.tag-pill .count {
  margin-inline-start: 6px;
  color: var(--faint);
  font-family: 'IBM Plex Mono', monospace;
}
.empty-state {
  text-align: center;
  padding: 30px 0;
  color: var(--faint);
  font-size: 13px;
}

/* Toast */
.toast {
  position: fixed;
  top: calc(70px + var(--safe-top));
  left: 50%;
  transform: translateX(-50%);
  background: rgba(26,15,58,.96);
  border: 1px solid rgba(167,139,250,.30);
  color: var(--text);
  padding: 10px 22px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  z-index: 300;
  box-shadow: 0 18px 40px rgba(0,0,0,.5);
  backdrop-filter: blur(10px);
  animation: toast-in .25s ease;
}
@keyframes toast-in {
  from { opacity: 0; transform: translate(-50%, -16px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}
.toast.success { color: var(--mint); border-color: rgba(16,185,129,.5); }
.toast.error { color: var(--red); border-color: rgba(239,68,68,.5); }

/* When in active timer state */
.in-session #presetRow,
.in-session #tagRow {
  opacity: .35;
  pointer-events: none;
}