:root {
  color-scheme: dark;
  --ink: #0a0a08;
  --ink-rgb: 10, 10, 8;
  --paper: #efe7d2;
  --paper-rgb: 239, 231, 210;
  --muted: #a79f8e;
  --line: rgba(239, 231, 210, 0.17);
  --line-strong: rgba(239, 231, 210, 0.34);
  --accent: #f2b441;
  --accent-rgb: 242, 180, 65;
  --signal: #38d890;
  --signal-rgb: 56, 216, 144;
  --danger: #ff6347;
  --panel: rgba(14, 14, 12, 0.72);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  --radius: 8px;
  --display-font: "Azeret Mono", "Courier New", monospace;
  --serif-font: "Cormorant Garamond", Georgia, serif;
}

[data-theme="paper"] {
  color-scheme: light;
  --ink: #e9dfc9;
  --ink-rgb: 233, 223, 201;
  --paper: #171412;
  --paper-rgb: 23, 20, 18;
  --muted: #655b4d;
  --line: rgba(23, 20, 18, 0.17);
  --line-strong: rgba(23, 20, 18, 0.28);
  --accent: #c43f25;
  --accent-rgb: 196, 63, 37;
  --signal: #166b6d;
  --signal-rgb: 22, 107, 109;
  --danger: #9e2b20;
  --panel: rgba(248, 238, 214, 0.78);
  --shadow: 0 22px 70px rgba(77, 55, 26, 0.2);
}

[data-theme="signal"] {
  --ink: #070b09;
  --ink-rgb: 7, 11, 9;
  --paper: #e9fff3;
  --paper-rgb: 233, 255, 243;
  --muted: #8cb09c;
  --line: rgba(233, 255, 243, 0.14);
  --line-strong: rgba(233, 255, 243, 0.3);
  --accent: #ff4d2e;
  --accent-rgb: 255, 77, 46;
  --signal: #c4ff3d;
  --signal-rgb: 196, 255, 61;
  --danger: #ff4d2e;
  --panel: rgba(9, 20, 15, 0.72);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--ink);
}

body {
  min-height: 100%;
  margin: 0;
  background:
    linear-gradient(115deg, rgba(var(--accent-rgb), 0.08), transparent 34%),
    linear-gradient(305deg, rgba(var(--signal-rgb), 0.08), transparent 36%),
    var(--ink);
  color: var(--paper);
  font-family: var(--display-font);
  font-size: 16px;
  letter-spacing: 0;
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  content: "";
  background-image:
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 95px,
      rgba(var(--paper-rgb), 0.042) 96px
    ),
    repeating-linear-gradient(
      0deg,
      transparent 0,
      transparent 95px,
      rgba(var(--paper-rgb), 0.035) 96px
    );
  mask-image: linear-gradient(180deg, black 0%, transparent 92%);
}

body::after {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  content: "";
  opacity: 0.18;
  background-image:
    radial-gradient(circle at 25% 20%, rgba(var(--paper-rgb), 0.3) 0 1px, transparent 1px),
    radial-gradient(circle at 80% 70%, rgba(var(--paper-rgb), 0.22) 0 1px, transparent 1px);
  background-size: 17px 17px, 23px 23px;
  mix-blend-mode: overlay;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.app-shell {
  position: relative;
  display: grid;
  min-height: 100vh;
  padding: 28px;
  grid-template-columns: minmax(0, 1fr) 364px;
  grid-template-rows: auto 1fr;
  gap: 24px;
  isolation: isolate;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.atlas-ring {
  position: absolute;
  border: 1px solid rgba(var(--paper-rgb), 0.1);
  border-radius: 50%;
  background:
    conic-gradient(from 90deg, transparent, rgba(var(--accent-rgb), 0.22), transparent 24%, transparent 100%),
    repeating-conic-gradient(from 0deg, rgba(var(--paper-rgb), 0.18) 0 1deg, transparent 1deg 12deg);
  mask-image: radial-gradient(circle, transparent 57%, black 58%, black 61%, transparent 62%);
}

.atlas-ring-one {
  width: 720px;
  height: 720px;
  right: 118px;
  top: 92px;
  animation: drift-clockwise 42s linear infinite;
}

.atlas-ring-two {
  width: 480px;
  height: 480px;
  left: -120px;
  bottom: 70px;
  animation: drift-counter 58s linear infinite;
}

.atlas-line {
  position: absolute;
  width: 1px;
  height: 130vh;
  top: -15vh;
  background: linear-gradient(180deg, transparent, rgba(var(--paper-rgb), 0.18), transparent);
  transform-origin: center;
}

.atlas-line-one {
  left: 24%;
  transform: rotate(18deg);
}

.atlas-line-two {
  right: 22%;
  transform: rotate(-24deg);
}

.topbar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 4px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--paper);
  text-decoration: none;
  text-transform: uppercase;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.22em;
}

.brand-mark {
  display: inline-block;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background:
    linear-gradient(90deg, transparent 47%, var(--accent) 48% 52%, transparent 53%),
    linear-gradient(0deg, transparent 47%, rgba(var(--paper-rgb), 0.7) 48% 52%, transparent 53%);
  box-shadow: 0 0 0 8px rgba(var(--paper-rgb), 0.03);
}

.mode-tabs {
  display: inline-grid;
  grid-auto-flow: column;
  gap: 4px;
  min-height: 46px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(var(--ink-rgb), 0.36);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.tab {
  min-width: 98px;
  min-height: 36px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  transition:
    color 180ms ease,
    background 180ms ease,
    transform 180ms ease;
}

.tab:hover {
  color: var(--paper);
  transform: translateY(-1px);
}

.tab.is-active {
  color: var(--ink);
  background: var(--accent);
}

.stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 460px);
  align-items: center;
  min-height: 680px;
  gap: 28px;
}

.time-block {
  position: relative;
  display: grid;
  align-content: center;
  min-height: 560px;
  padding: 44px 0 44px 18px;
}

.time-block::before {
  position: absolute;
  top: 12%;
  bottom: 12%;
  left: 0;
  width: 4px;
  content: "";
  background: linear-gradient(180deg, var(--accent), var(--signal));
  box-shadow: 18px 0 60px rgba(var(--accent-rgb), 0.22);
}

.zone-row,
.date-line {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.zone-row span:last-child {
  color: var(--signal);
}

.digital-time {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  max-width: 100%;
  margin: 24px 0 16px;
  color: var(--paper);
  font-family: var(--display-font);
  font-size: 6.75rem;
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: 0;
  text-shadow:
    0 1px 0 rgba(var(--paper-rgb), 0.18),
    0 32px 70px rgba(0, 0, 0, 0.3);
  font-variant-numeric: tabular-nums;
}

.seconds-wrap {
  display: inline-flex;
  align-items: baseline;
}

.period {
  align-self: center;
  min-width: 3.2rem;
  margin-left: 14px;
  color: var(--accent);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.blink {
  color: rgba(var(--paper-rgb), 0.54);
  animation: colon-pulse 1s steps(2, jump-none) infinite;
}

.date-line {
  font-family: var(--serif-font);
  text-transform: none;
  color: var(--paper);
  font-size: 1.42rem;
  font-weight: 500;
  letter-spacing: 0.03em;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(190px, 1fr));
  gap: 12px;
  max-width: 620px;
  margin-top: 42px;
}

.metric {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(var(--ink-rgb), 0.34);
  backdrop-filter: blur(14px);
}

.metric-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.metric strong {
  color: var(--paper);
  font-weight: 700;
}

.track {
  position: relative;
  height: 8px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(var(--paper-rgb), 0.08);
}

.track span {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0%;
  min-width: 2px;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--signal));
  transition: width 500ms ease;
}

.dial-wrap {
  display: grid;
  place-items: center;
  min-width: 0;
}

.dial {
  --hour-angle: 0deg;
  --minute-angle: 0deg;
  --second-angle: 0deg;
  position: relative;
  container-type: size;
  width: min(100%, 430px);
  aspect-ratio: 1;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(var(--paper-rgb), 0.04) 0 16%, transparent 17%),
    radial-gradient(circle, transparent 0 58%, rgba(var(--paper-rgb), 0.07) 59% 60%, transparent 61%),
    conic-gradient(from -90deg, rgba(var(--accent-rgb), 0.22), transparent 18%, rgba(var(--signal-rgb), 0.14), transparent 52%, rgba(var(--paper-rgb), 0.08), transparent);
  box-shadow:
    inset 0 0 0 1px rgba(var(--paper-rgb), 0.04),
    inset 0 0 70px rgba(var(--paper-rgb), 0.04),
    0 34px 100px rgba(0, 0, 0, 0.32);
  animation: arrive 760ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
}

.ticks {
  position: absolute;
  inset: 0;
  border-radius: 50%;
}

.tick {
  position: absolute;
  left: calc(50% - 0.5px);
  top: 12px;
  width: 1px;
  height: 10px;
  background: rgba(var(--paper-rgb), 0.32);
  transform-origin: 50% calc(50cqw - 12px);
}

.tick.major {
  left: calc(50% - 1px);
  width: 2px;
  height: 22px;
  background: var(--accent);
}

.orbit {
  position: absolute;
  inset: 13%;
  border: 1px solid rgba(var(--paper-rgb), 0.08);
  border-radius: 50%;
}

.orbit-hour {
  inset: 31%;
}

.orbit-minute {
  inset: 22%;
}

.orbit-second {
  inset: 13%;
  border-color: rgba(var(--signal-rgb), 0.2);
}

.hand {
  position: absolute;
  left: calc(50% - 1px);
  bottom: 50%;
  width: 2px;
  border-radius: 999px;
  transform-origin: 50% 100%;
  transition: transform 120ms linear;
}

.hand-hour {
  height: 24%;
  background: var(--paper);
  transform: rotate(var(--hour-angle));
}

.hand-minute {
  height: 35%;
  background: linear-gradient(180deg, var(--accent), var(--paper));
  transform: rotate(var(--minute-angle));
}

.hand-second {
  left: calc(50% - 0.5px);
  width: 1px;
  height: 42%;
  background: var(--signal);
  box-shadow: 0 0 16px rgba(var(--signal-rgb), 0.45);
  transform: rotate(var(--second-angle));
}

.pin {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 18px;
  height: 18px;
  border: 2px solid var(--ink);
  border-radius: 50%;
  background: var(--paper);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 0 8px rgba(var(--paper-rgb), 0.08);
}

.dial-center {
  position: absolute;
  left: 50%;
  top: 62%;
  display: grid;
  min-width: 120px;
  transform: translateX(-50%);
  text-align: center;
  pointer-events: none;
}

.dial-center span {
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.dial-center strong {
  color: var(--paper);
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.control-panel {
  display: grid;
  align-content: start;
  min-height: 0;
}

.panel {
  width: 100%;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(145deg, rgba(var(--paper-rgb), 0.06), transparent 48%),
    var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
  animation: panel-in 260ms ease both;
}

.panel[hidden] {
  display: none;
}

.panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.panel-head p {
  margin: 0;
  color: var(--paper);
  font-family: var(--serif-font);
  font-size: 1.8rem;
  font-weight: 700;
}

.panel-head span {
  color: var(--muted);
  text-transform: uppercase;
  text-align: right;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.field {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.field input,
.field select {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(var(--ink-rgb), 0.44);
  color: var(--paper);
  padding: 0 12px;
  text-transform: none;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0;
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease,
    background 180ms ease;
}

[data-theme="paper"] .field input,
[data-theme="paper"] .field select {
  background: rgba(255, 248, 230, 0.7);
}

.field input:hover,
.field select:hover {
  border-color: var(--line-strong);
}

.switch-grid,
.number-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.switch-row {
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--paper);
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  background: rgba(var(--ink-rgb), 0.22);
}

.switch-row input {
  appearance: none;
  position: relative;
  flex: 0 0 auto;
  width: 44px;
  height: 24px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(var(--paper-rgb), 0.08);
  transition: background 180ms ease;
}

.switch-row input::after {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--muted);
  content: "";
  transition:
    transform 180ms ease,
    background 180ms ease;
}

.switch-row input:checked {
  background: rgba(var(--accent-rgb), 0.28);
}

.switch-row input:checked::after {
  transform: translateX(20px);
  background: var(--accent);
}

.timer-face {
  display: grid;
  min-height: 132px;
  place-items: center;
  margin: 10px 0 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--paper);
  background:
    repeating-linear-gradient(90deg, rgba(var(--paper-rgb), 0.05) 0 1px, transparent 1px 18px),
    rgba(var(--ink-rgb), 0.3);
  font-size: 2.7rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.action {
  min-height: 44px;
  min-width: 92px;
  flex: 1 1 92px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(var(--paper-rgb), 0.06);
  color: var(--paper);
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease;
}

.action:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  background: rgba(var(--paper-rgb), 0.1);
}

.action.primary {
  border-color: transparent;
  background: var(--accent);
  color: var(--ink);
}

.action.danger {
  color: var(--danger);
}

.lap-list,
.alarm-list {
  display: grid;
  gap: 8px;
  max-height: 300px;
  margin: 16px 0 0;
  padding: 0;
  overflow: auto;
}

.lap-list {
  counter-reset: laps;
  list-style: none;
}

.lap-list li,
.alarm-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  min-height: 54px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(var(--ink-rgb), 0.22);
}

.lap-list li::before {
  counter-increment: laps;
  content: counter(laps, decimal-leading-zero);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
}

.lap-list time,
.alarm-time {
  color: var(--paper);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.alarm-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 10px;
}

.alarm-form .action {
  grid-column: 1 / -1;
}

.alarm-item {
  grid-template-columns: minmax(66px, auto) minmax(0, 1fr) auto auto;
}

.alarm-label {
  min-width: 0;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.icon-button {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(var(--paper-rgb), 0.05);
  color: var(--paper);
  font-weight: 700;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.icon-button:hover {
  transform: translateY(-1px);
  border-color: var(--line-strong);
  background: rgba(var(--paper-rgb), 0.1);
}

.icon-button[aria-pressed="true"] {
  background: rgba(var(--signal-rgb), 0.18);
  color: var(--signal);
}

.toast {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 4;
  display: grid;
  min-width: 260px;
  max-width: min(420px, calc(100vw - 56px));
  min-height: 54px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  font-weight: 700;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(18px);
  pointer-events: none;
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes colon-pulse {
  0%,
  49% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0.28;
  }
}

@keyframes drift-clockwise {
  to {
    transform: rotate(360deg);
  }
}

@keyframes drift-counter {
  to {
    transform: rotate(-360deg);
  }
}

@keyframes arrive {
  from {
    opacity: 0;
    transform: translateY(18px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }
}

@media (max-width: 1180px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .stage {
    min-height: auto;
  }

  .control-panel {
    max-width: none;
  }
}

@media (max-width: 920px) {
  .app-shell {
    padding: 20px;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .mode-tabs {
    width: 100%;
    grid-auto-flow: row;
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .tab {
    min-width: 0;
  }

  .stage {
    grid-template-columns: 1fr;
  }

  .time-block {
    min-height: auto;
    padding-top: 24px;
    padding-bottom: 20px;
  }

  .digital-time {
    font-size: 4.8rem;
  }

  .dial {
    max-width: 380px;
  }
}

@media (max-width: 620px) {
  .app-shell {
    padding: 14px;
    gap: 16px;
  }

  .brand {
    font-size: 0.75rem;
  }

  .mode-tabs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tab {
    min-height: 40px;
    font-size: 0.68rem;
  }

  .time-block {
    padding-left: 12px;
  }

  .digital-time {
    font-size: 3.1rem;
  }

  .period {
    margin-left: 8px;
    font-size: 0.95rem;
  }

  .date-line {
    font-size: 1.18rem;
  }

  .zone-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .metric-grid,
  .switch-grid,
  .number-grid,
  .alarm-form {
    grid-template-columns: 1fr;
  }

  .panel {
    padding: 16px;
  }

  .timer-face {
    min-height: 104px;
    font-size: 2.1rem;
  }

  .alarm-item {
    grid-template-columns: minmax(66px, auto) minmax(0, 1fr) auto;
  }

  .alarm-item .icon-button:last-child {
    grid-column: 3;
  }
}