:root {
  --bg-a: #0c111b;
  --bg-b: #132238;
  --bg-c: #273e67;
  --glass: rgba(255, 255, 255, 0.1);
  --glass-strong: rgba(255, 255, 255, 0.18);
  --text: #e8f0ff;
  --muted: #b8c4db;
  --focus: #56e3b4;
  --break: #f7a65a;
  --long: #ff6d83;
  --danger: #ff6d83;
  --ring-track: rgba(255, 255, 255, 0.18);
  --shadow: 0 14px 34px rgba(0, 0, 0, 0.28);
  --font-stack: "Inter", "Segoe UI", "Trebuchet MS", "Arial", sans-serif;
  --btn-border: rgba(255, 255, 255, 0.28);
  --btn-border-strong: rgba(255, 255, 255, 0.42);
  --btn-bg-ghost: rgba(255, 255, 255, 0.12);
}

html[data-theme="light"] {
  --bg-a: #e8edf7;
  --bg-b: #d4def2;
  --bg-c: #bbcdea;
  --glass: rgba(255, 255, 255, 0.65);
  --glass-strong: rgba(255, 255, 255, 0.82);
  --text: #152036;
  --muted: #3f5274;
  --ring-track: rgba(0, 0, 0, 0.13);
  --shadow: 0 12px 28px rgba(31, 48, 79, 0.16);
  --btn-border: rgba(21, 32, 54, 0.26);
  --btn-border-strong: rgba(21, 32, 54, 0.42);
  --btn-bg-ghost: rgba(255, 255, 255, 0.72);
}

html[data-font="inter"] { --font-stack: "Inter", "Segoe UI", "Trebuchet MS", "Arial", sans-serif; }
html[data-font="system"] { --font-stack: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
html[data-font="serif"] { --font-stack: Georgia, "Times New Roman", Times, serif; }
html[data-font="mono"] { --font-stack: "Cascadia Mono", "Consolas", "Courier New", monospace; }

html.high-contrast {
  --glass: rgba(0, 0, 0, 0.82);
  --glass-strong: rgba(0, 0, 0, 0.94);
  --text: #ffffff;
  --muted: #e1e1e1;
  --ring-track: rgba(255, 255, 255, 0.4);
}
html.high-contrast .glass,
html.high-contrast .btn,
html.high-contrast .input,
html.high-contrast .select {
  border-color: #ffffff;
}
html.high-contrast .btn.primary {
  background: #00ffae;
  color: #001d14;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font-stack);
  color: var(--text);
  background: radial-gradient(1400px 900px at 10% 10%, var(--bg-c), transparent), linear-gradient(145deg, var(--bg-a), var(--bg-b));
  overflow-x: hidden;
}

.bg-gradient, .bg-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
}
.bg-grid {
  background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: 0.16;
}

.app-shell {
  position: relative;
  z-index: 1;
  max-width: 1180px;
  margin: 0 auto;
  padding: 1rem;
}

.glass {
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: var(--glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
  border-radius: 18px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.2rem;
  align-items: center;
}
h1, h2, h3 { margin: 0 0 0.5rem; }
.subtle { margin: 0; color: var(--muted); font-size: 0.92rem; }
.topbar-actions { display: flex; gap: 0.9rem; flex-wrap: wrap; }
.control-row { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.timer-panel .control-row {
  justify-content: center;
  gap: 1.45rem;
  margin-top: 0.4rem;
}
.timer-panel .control-row.compact { gap: 1rem; }

.main-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}
.panel { padding: 1rem; }
.timer-panel { grid-column: 1; grid-row: 1 / span 2; }
.settings-panel { grid-column: 2; grid-row: 1; }
.task-panel { grid-column: 2; grid-row: 2; }
.analytics-panel { grid-column: 1; grid-row: 3; }
.notes-panel { grid-column: 2; grid-row: 3; }
.panel {
  animation: fadeInUp 620ms ease both;
}
.panel:nth-child(2) { animation-delay: 90ms; }
.panel:nth-child(3) { animation-delay: 170ms; }
.panel:nth-child(4) { animation-delay: 240ms; }

.phase-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.7rem;
  flex-wrap: wrap;
}
.phase-row .select {
  width: auto;
  min-width: 190px;
  max-width: 260px;
  margin-left: auto;
}
.badge {
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: rgba(86, 227, 180, 0.2);
  border: 1px solid rgba(86, 227, 180, 0.5);
  font-weight: 700;
}

.timer-wrap {
  position: relative;
  width: 220px;
  height: 220px;
  margin: 1rem auto;
}
.ring { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring-track, .ring-progress {
  fill: none;
  stroke-width: 12;
}
.ring-track { stroke: var(--ring-track); }
.ring-progress {
  stroke: var(--focus);
  stroke-linecap: round;
  stroke-dasharray: 490;
  stroke-dashoffset: 490;
  transition: stroke-dashoffset 0.4s linear, stroke 0.3s ease;
}

.time-display {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  width: 74%;
  height: 74%;
  margin: auto;
  font-size: clamp(2.25rem, 7vw, 3.7rem);
  font-weight: 800;
  letter-spacing: 0.5px;
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.input, .select, .btn, input[type="range"] {
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: var(--glass-strong);
  color: var(--text);
  padding: 0.6rem 0.75rem;
  font: inherit;
  transition: transform 220ms ease, filter 220ms ease, box-shadow 220ms ease, border-color 220ms ease, background 220ms ease;
}
.input, .select { width: 100%; }
label { display: grid; gap: 0.35rem; font-size: 0.9rem; color: var(--muted); }
.field-error {
  color: #ff4a61;
  font-weight: 700;
  font-size: 0.85rem;
  line-height: 1.1;
  min-height: 1.1rem;
}
.hidden { display: none; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-height: 2.55rem;
  cursor: pointer;
  border: 1px solid var(--btn-border);
  padding: 0.64rem 1.04rem;
  line-height: 1.1;
  white-space: nowrap;
  letter-spacing: 0.2px;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.03);
}
.btn:hover {
  transform: translateY(-2px);
  filter: none;
  border-color: var(--btn-border-strong);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.16), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}
.btn:active { transform: translateY(0); }
.btn:focus-visible {
  outline: 2px solid rgba(86, 227, 180, 0.75);
  outline-offset: 2px;
}
.btn:disabled {
  opacity: 0.52;
  cursor: not-allowed;
  transform: none;
  filter: none;
  box-shadow: none;
}
.btn.primary {
  background: linear-gradient(145deg, rgba(86, 227, 180, 0.95), rgba(40, 163, 126, 0.95));
  color: #092117;
  font-weight: 800;
  border-color: rgba(86, 227, 180, 0.72);
}
.btn.ghost {
  background: var(--btn-bg-ghost);
  border-color: var(--btn-border);
}
.btn.danger { background: rgba(255, 109, 131, 0.3); border-color: rgba(255, 109, 131, 0.6); }
.btn.small {
  min-height: 2.05rem;
  padding: 0.42rem 0.62rem;
  font-size: 0.85rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem 0.75rem;
  margin-bottom: 0.8rem;
  align-items: start;
}
.switch {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text);
}
.switch.full { width: 100%; }

.task-create-row { display: grid; grid-template-columns: 1fr auto; gap: 0.55rem; margin-bottom: 0.6rem; }
.task-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.5rem;
  max-height: 270px;
  overflow: auto;
}
.task-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.5rem;
  align-items: center;
  padding: 0.45rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.09);
  animation: fadeInUp 320ms ease both;
  transition: transform 220ms ease, background 220ms ease;
}
.task-item:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, 0.14);
}
.task-title.done { text-decoration: line-through; opacity: 0.68; }

.task-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  position: relative;
}
.task-check input {
  appearance: none;
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.08);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: all 220ms ease;
}
.task-check input::after {
  content: "";
  width: 11px;
  height: 6px;
  border-left: 3px solid #001f14;
  border-bottom: 3px solid #001f14;
  transform: rotate(-45deg) scale(0);
  transform-origin: center;
  transition: transform 190ms ease;
}
.task-check input:checked {
  background: linear-gradient(145deg, rgba(86, 227, 180, 0.98), rgba(40, 163, 126, 0.98));
  border-color: rgba(86, 227, 180, 0.95);
  box-shadow: 0 0 0 4px rgba(86, 227, 180, 0.16);
}
.task-check input:checked::after {
  transform: rotate(-45deg) scale(1);
}

.chips { display: flex; gap: 0.4rem; margin-bottom: 0.55rem; }
.chip {
  border: 1px solid var(--btn-border);
  background: var(--btn-bg-ghost);
  color: var(--text);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.03);
}
.chip:hover {
  transform: translateY(-1px);
  border-color: var(--btn-border-strong);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.12), inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}
.chip.active { background: rgba(86, 227, 180, 0.34); border-color: rgba(86, 227, 180, 0.65); }

.topbar-actions .btn {
  min-height: 2.4rem;
  padding: 0.56rem 0.9rem;
  border-color: var(--btn-border);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}
.rewards-row {
  margin-top: 0.5rem;
}
.stat-card {
  border-radius: 12px;
  padding: 0.6rem;
  background: rgba(255, 255, 255, 0.12);
  display: grid;
  gap: 0.35rem;
  animation: floatIn 480ms ease both;
}
.stat-card:nth-child(1) { animation-delay: 40ms; }
.stat-card:nth-child(2) { animation-delay: 95ms; }
.stat-card:nth-child(3) { animation-delay: 145ms; }
.stat-card:nth-child(4) { animation-delay: 195ms; }
.stat-card:hover {
  transform: translateY(-3px);
}
.stat-card span { color: var(--muted); font-size: 0.82rem; }
.stat-card strong { font-size: 1.25rem; }

canvas {
  width: 100%;
  height: 180px;
  margin-bottom: 0.7rem;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 12px;
}

.heatmap {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 4px;
}
.heat-cell {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
}

.task-breakdown {
  list-style: none;
  margin: 0 0 0.75rem;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}
.task-breakdown li {
  display: flex;
  justify-content: space-between;
  gap: 0.7rem;
  padding: 0.45rem 0.55rem;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
}
.task-breakdown li strong {
  font-size: 0.84rem;
}

.task-item > div {
  display: flex;
  gap: 0.35rem;
  justify-content: flex-end;
}

.export-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
  margin-top: 0.35rem;
  margin-bottom: 1.05rem;
}
.export-head {
  text-align: center;
  font-weight: 700;
  letter-spacing: 0.3px;
}
.export-grid .btn {
  width: 100%;
  border: 1px solid var(--btn-border-strong);
  background: rgba(255, 255, 255, 0.14);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.notes-input {
  margin-top: 0.4rem;
  min-height: 170px;
  max-height: 280px;
  resize: vertical;
}

.notes-panel {
  display: grid;
  align-content: start;
  gap: 0.25rem;
}

.site-footer {
  max-width: 1180px;
  margin: 0.2rem auto 1.1rem;
  padding: 0 1rem;
  text-align: center;
}

.export-actions {
  margin-top: 0.35rem;
  padding-top: 0.2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

html[data-theme="light"] .export-grid .btn {
  background: rgba(255, 255, 255, 0.86);
  border-color: rgba(21, 32, 54, 0.34);
  box-shadow: inset 0 0 0 1px rgba(21, 32, 54, 0.08);
}

html[data-theme="light"] .export-actions {
  border-top-color: rgba(21, 32, 54, 0.16);
}

.mini-timer {
  position: fixed;
  right: 16px;
  bottom: 16px;
  width: 230px;
  padding: 0.65rem;
  z-index: 20;
  cursor: move;
  animation: popIn 300ms ease both;
}
.mini-timer.hidden { display: none; }
.mini-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.mini-display {
  font-size: 2rem;
  font-weight: 800;
  text-align: center;
  margin: 0.5rem 0;
}

.toast-region {
  position: fixed;
  right: 12px;
  bottom: 12px;
  display: grid;
  gap: 0.5rem;
  z-index: 30;
}
.toast {
  max-width: 320px;
  padding: 0.65rem 0.75rem;
  border-radius: 10px;
  background: rgba(20, 28, 46, 0.86);
  color: #f1f7ff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  animation: toastIn 260ms ease both;
}

dialog {
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--text);
  background: var(--bg-b);
  border-radius: 12px;
  width: min(420px, 92vw);
}
dialog::backdrop {
  background: rgba(12, 14, 22, 0.45);
  backdrop-filter: blur(2px);
}
html[data-theme="dark"] dialog {
  background: #0d1524;
  color: #eaf2ff;
  border-color: rgba(255, 255, 255, 0.35);
}
html[data-theme="light"] dialog {
  background: #f7fbff;
  color: #12213a;
  border-color: rgba(18, 33, 58, 0.18);
}

body.phase-focus .ring-progress { stroke: var(--focus); }
body.phase-shortBreak .ring-progress { stroke: var(--break); }
body.phase-longBreak .ring-progress { stroke: var(--long); }
body.phase-focus .timer-wrap { animation: auraFocus 1.8s ease-in-out infinite; }
body.phase-shortBreak .timer-wrap { animation: auraBreak 1.8s ease-in-out infinite; }
body.phase-longBreak .timer-wrap { animation: auraLong 1.8s ease-in-out infinite; }

body.embed-mode .topbar,
body.embed-mode .settings-panel,
body.embed-mode .task-panel,
body.embed-mode .analytics-panel,
body.embed-mode .notes-panel {
  display: none;
}
body.embed-mode .main-grid {
  grid-template-columns: 1fr;
}
body.embed-mode .timer-panel {
  grid-row: auto;
}

@media (max-width: 950px) {
  .main-grid { grid-template-columns: 1fr; }
  .timer-panel,
  .settings-panel,
  .task-panel,
  .analytics-panel,
  .notes-panel {
    grid-column: auto;
    grid-row: auto;
  }
  .topbar-actions { gap: 0.7rem; }
  .control-row { gap: 0.65rem; }
  .timer-panel .control-row { gap: 1rem; }
  .phase-row .select {
    min-width: 100%;
    margin-left: 0;
  }
  .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .app-shell {
    padding: 0.7rem;
  }
  .topbar {
    padding: 0.8rem 0.9rem;
  }
  .topbar-actions {
    width: 100%;
    gap: 0.45rem;
  }
  .topbar-actions .btn {
    flex: 1 1 calc(50% - 0.45rem);
    text-align: center;
    padding: 0.62rem 0.7rem;
  }
  .timer-wrap {
    width: 190px;
    height: 190px;
  }
  .time-display {
    font-size: clamp(1.8rem, 10vw, 2.9rem);
  }
  .timer-panel .control-row {
    gap: 0.55rem;
  }
  .timer-panel .control-row .btn,
  .timer-panel .control-row .switch {
    flex: 1 1 calc(50% - 0.55rem);
    justify-content: center;
  }
  .task-item {
    grid-template-columns: auto 1fr;
  }
  .task-item > div {
    grid-column: 1 / span 2;
    display: flex;
    gap: 0.35rem;
    justify-content: flex-end;
  }
}

@media (max-width: 520px) {
  .stats-row {
    grid-template-columns: 1fr;
  }
  .chips {
    flex-wrap: wrap;
  }
  canvas {
    height: 150px;
  }
  .mini-timer {
    width: min(92vw, 230px);
  }
  .export-grid {
    gap: 0.35rem;
  }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes floatIn {
  from { opacity: 0; transform: translateY(10px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes popIn {
  from { opacity: 0; transform: scale(0.94); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes auraFocus {
  0%, 100% { filter: drop-shadow(0 0 0 rgba(86, 227, 180, 0)); }
  50% { filter: drop-shadow(0 0 18px rgba(86, 227, 180, 0.45)); }
}

@keyframes auraBreak {
  0%, 100% { filter: drop-shadow(0 0 0 rgba(247, 166, 90, 0)); }
  50% { filter: drop-shadow(0 0 18px rgba(247, 166, 90, 0.45)); }
}

@keyframes auraLong {
  0%, 100% { filter: drop-shadow(0 0 0 rgba(255, 109, 131, 0)); }
  50% { filter: drop-shadow(0 0 18px rgba(255, 109, 131, 0.45)); }
}