*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #1a1714;
  --surface: #222019;
  --surface2: #2c2924;
  --surface3: #36322c;
  --border: #3d3930;
  --border2: #4d4840;
  --text: #f5f0e5;
  --text2: #a09585;
  --text3: #665e52;
  --amber: #e8963c;
  --amber2: #f5b060;
  --amber-dim: #2e1e08;
  --violet: #9b87d4;
  --violet2: #b5a5e8;
  --violet-dim: #1e1830;
  --green: #5db87a;
  --green-dim: #0f2818;
  --red: #d45c5c;
  --red-dim: #2e0f0f;
  --ring-focus: #e8963c;
  --ring-break: #9b87d4;
  --radius: 18px;
  --radius-sm: 10px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Instrument Sans", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 0 80px;
  background-image: radial-gradient(
    ellipse 80% 50% at 50% -10%,
    rgba(232, 150, 60, 0.07) 0%,
    transparent 60%
  );
}

/* TOPBAR */
.topbar {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 28px;
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(26, 23, 20, 0.8);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "Instrument Serif", serif;
  font-size: 18px;
  color: var(--text);
}
.logo-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 8px rgba(232, 150, 60, 0.6);
}
.logo em {
  font-style: italic;
  color: var(--text2);
}
.topbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.18s;
  font-size: 14px;
}
.btn-icon:hover {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--border2);
}
.btn-icon.muted {
  color: var(--red);
}
.btn-icon svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* PAGE */
.page {
  width: 100%;
  max-width: 560px;
  padding: 32px 20px 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* TIMER CARD */
.timer-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px 28px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: border-color 0.4s;
}
.timer-card.break-mode {
  border-color: rgba(155, 135, 212, 0.35);
}
.timer-card::before {
  content: "";
  position: absolute;
  top: -80px;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(232, 150, 60, 0.08) 0%,
    transparent 70%
  );
  pointer-events: none;
  transition: background 0.4s;
}
.timer-card.break-mode::before {
  background: radial-gradient(
    circle,
    rgba(155, 135, 212, 0.08) 0%,
    transparent 70%
  );
}

.mode-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 99px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: var(--amber-dim);
  border: 1px solid rgba(232, 150, 60, 0.25);
  color: var(--amber2);
  margin-bottom: 20px;
  transition: all 0.4s;
}
.mode-pill.break {
  background: var(--violet-dim);
  border-color: rgba(155, 135, 212, 0.25);
  color: var(--violet2);
}
.mode-pill-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(0.7);
  }
}

/* SVG RING */
.ring-container {
  position: relative;
  width: 200px;
  height: 200px;
  margin: 0 auto 20px;
}
.ring-svg {
  transform: rotate(-90deg);
  overflow: visible;
}
.ring-track {
  fill: none;
  stroke: var(--surface2);
  stroke-width: 6;
}
.ring-fill {
  fill: none;
  stroke: var(--amber);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-dasharray: 534;
  stroke-dashoffset: 534;
  transition:
    stroke-dashoffset 0.5s linear,
    stroke 0.4s;
  filter: drop-shadow(0 0 6px rgba(232, 150, 60, 0.5));
}
.ring-fill.break {
  stroke: var(--violet);
  filter: drop-shadow(0 0 6px rgba(155, 135, 212, 0.5));
}
.ring-center {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.timer-display {
  font-family: "Instrument Serif", serif;
  font-size: 54px;
  font-weight: 400;
  line-height: 1;
  color: var(--text);
  letter-spacing: -2px;
}
.timer-session-sub {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text3);
  margin-top: 4px;
}

.task-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text2);
  margin-bottom: 20px;
  min-height: 20px;
}
.task-label strong {
  color: var(--text);
  font-weight: 600;
}

/* TIMER CONTROLS */
.timer-controls {
  display: flex;
  gap: 10px;
  justify-content: center;
}
.btn-timer {
  height: 44px;
  padding: 0 22px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border2);
  background: var(--surface2);
  font-family: "Instrument Sans", sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--text2);
  cursor: pointer;
  transition: all 0.18s;
  display: flex;
  align-items: center;
  gap: 7px;
}
.btn-timer:hover:not(:disabled) {
  background: var(--surface3);
  color: var(--text);
  border-color: var(--text3);
}
.btn-timer:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.btn-timer.primary {
  background: var(--amber);
  border-color: var(--amber);
  color: #1a1714;
  font-weight: 700;
}
.btn-timer.primary:hover:not(:disabled) {
  background: var(--amber2);
  border-color: var(--amber2);
}
.btn-timer.primary.break-accent {
  background: var(--violet);
  border-color: var(--violet);
}
.btn-timer.primary.break-accent:hover:not(:disabled) {
  background: var(--violet2);
  border-color: var(--violet2);
}
.btn-timer svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

/* ADD TASK CARD */
.add-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.add-card-title {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 16px;
}
.input-row {
  display: grid;
  grid-template-columns: 1fr 68px 68px 68px;
  gap: 8px;
  align-items: end;
  margin-bottom: 12px;
}
@media (max-width: 520px) {
  .input-row {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .task-name-field {
    grid-column: 1/-1;
  }
}
.field label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 5px;
}
.field input {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: "Instrument Sans", sans-serif;
  font-size: 14px;
  font-weight: 400;
  padding: 10px 12px;
  outline: none;
  transition:
    border-color 0.18s,
    box-shadow 0.18s;
  -moz-appearance: textfield;
}
.field input::-webkit-outer-spin-button,
.field input::-webkit-inner-spin-button {
  -webkit-appearance: none;
}
.field input::placeholder {
  color: var(--text3);
}
.field input:focus {
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(232, 150, 60, 0.1);
}
.btn-add {
  width: 100%;
  height: 44px;
  background: var(--text);
  color: var(--bg);
  border: none;
  border-radius: var(--radius-sm);
  font-family: "Instrument Sans", sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition:
    opacity 0.18s,
    transform 0.12s;
}
.btn-add:hover {
  opacity: 0.88;
}
.btn-add:active {
  transform: scale(0.98);
}

/* TASK LIST */
.tasks-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.tasks-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.tasks-title {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text3);
}
.tasks-count {
  font-family: "Instrument Serif", serif;
  font-size: 13px;
  font-style: italic;
  color: var(--text3);
}

.task-list {
  list-style: none;
}
.task-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
  position: relative;
}
.task-item:last-child {
  border-bottom: none;
}
.task-item:hover {
  background: var(--surface2);
}
.task-item.is-active {
  background: rgba(232, 150, 60, 0.05);
  border-left: 2px solid var(--amber);
}
.task-item.is-done {
  opacity: 0.5;
}

.task-status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border2);
  flex-shrink: 0;
  transition: background 0.3s;
}
.task-item.is-active .task-status-dot {
  background: var(--amber);
  box-shadow: 0 0 6px rgba(232, 150, 60, 0.5);
}
.task-item.is-done .task-status-dot {
  background: var(--green);
}

.task-main {
  flex: 1;
  min-width: 0;
}
.task-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.task-item.is-done .task-name {
  text-decoration: line-through;
  color: var(--text3);
}
.task-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 5px;
  flex-wrap: wrap;
}
.meta-tag {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text3);
}
.sessions-row {
  display: flex;
  gap: 4px;
  margin-top: 4px;
  flex-wrap: wrap;
}
.session-pip {
  width: 22px;
  height: 5px;
  border-radius: 99px;
  background: var(--surface3);
  transition: background 0.3s;
}
.session-pip.done {
  background: var(--amber);
}
.session-pip.done.break-col {
  background: var(--violet);
}

.task-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}
.btn-task {
  height: 32px;
  padding: 0 12px;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: transparent;
  font-family: "Instrument Sans", sans-serif;
  font-size: 11px;
  font-weight: 600;
  color: var(--text3);
  cursor: pointer;
  transition: all 0.16s;
  white-space: nowrap;
}
.btn-task:hover:not(:disabled) {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--text3);
}
.btn-task.load:hover:not(:disabled) {
  background: var(--amber-dim);
  border-color: var(--amber);
  color: var(--amber2);
}
.btn-task.del:hover {
  background: var(--red-dim);
  border-color: var(--red);
  color: var(--red);
}
.btn-task:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.empty-state {
  padding: 40px 20px;
  text-align: center;
}
.empty-state p {
  font-family: "Instrument Serif", serif;
  font-size: 16px;
  font-style: italic;
  color: var(--text3);
}

/* MODAL */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(20, 18, 14, 0.75);
  backdrop-filter: blur(8px);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.show {
  display: flex;
}
.modal-box {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 32px 28px;
  width: 100%;
  max-width: 380px;
  text-align: center;
  animation: modalIn 0.25s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}
@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.93) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}
.modal-icon {
  font-size: 36px;
  margin-bottom: 14px;
  display: block;
}
.modal-title {
  font-family: "Instrument Serif", serif;
  font-size: 22px;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 8px;
}
.modal-msg {
  font-size: 13px;
  color: var(--text2);
  line-height: 1.65;
  margin-bottom: 24px;
}
.modal-btn {
  width: 100%;
  height: 48px;
  background: var(--amber);
  color: #1a1714;
  border: none;
  border-radius: var(--radius-sm);
  font-family: "Instrument Sans", sans-serif;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.18s;
}
.modal-btn:hover {
  opacity: 0.88;
}

/* TOAST */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--text);
  color: var(--bg);
  padding: 10px 20px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 600;
  opacity: 0;
  pointer-events: none;
  transition: all 0.22s;
  z-index: 300;
  white-space: nowrap;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* KB HINT */
.kb-hint {
  text-align: center;
  font-size: 10px;
  color: var(--text3);
  padding-top: 4px;
}
.kb-hint kbd {
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 9px;
  font-family: "Instrument Sans", sans-serif;
}