:root {
  --bg: #f5f2ea;
  --surface: #fffdf8;
  --text: #202522;
  --muted: #5f6861;
  --accent: #d95d39;
  --accent-dark: #b84627;
  --line: #d9d7ce;
  --ring: #e1ded5;
  --success: #38705b;
  --shadow: 0 24px 80px rgba(40, 47, 42, 0.11);
  --sp-1: 8px;
  --sp-2: 16px;
  --sp-3: 24px;
  --sp-4: 40px;
  --sp-5: 64px;
  --radius-sm: 10px;
  --radius-md: 20px;
  --radius-lg: 32px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    radial-gradient(circle at 12% 8%, rgba(217, 93, 57, 0.09), transparent 25rem),
    var(--bg);
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

button:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(217, 93, 57, 0.34);
  outline-offset: 3px;
}

.app-shell {
  width: min(1160px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header,
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header {
  min-height: 88px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  color: var(--text);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-decoration: none;
}

.brand-mark {
  width: 20px;
  height: 20px;
  border: 3px solid var(--accent);
  border-radius: 50%;
  box-shadow: inset 7px 0 0 var(--accent);
}

.keyboard-hint,
.site-footer {
  color: var(--muted);
  font-size: 13px;
}

kbd {
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.55);
  box-shadow: 0 1px 0 var(--line);
  font-family: inherit;
  font-size: 11px;
}

.timer-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.82fr);
  gap: var(--sp-5);
  align-items: center;
  min-height: 660px;
  padding: var(--sp-5);
  overflow: hidden;
  border: 1px solid rgba(217, 215, 206, 0.8);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.76), rgba(255, 253, 248, 0.94)),
    var(--surface);
  box-shadow: var(--shadow);
}

.intro {
  max-width: 500px;
}

.eyebrow {
  margin: 0 0 var(--sp-3);
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

h1 {
  margin: 0;
  font-family: Georgia, "Yu Mincho", "Hiragino Mincho ProN", serif;
  font-size: clamp(44px, 5vw, 72px);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1.18;
}

.intro-copy {
  max-width: 430px;
  margin: var(--sp-4) 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.timer-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.timer-status {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  min-height: 24px;
  margin-bottom: var(--sp-2);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
}

.timer-status.is-running .status-dot {
  animation: pulse 1.5s ease-in-out infinite;
  background: var(--accent);
}

.dial {
  position: relative;
  width: min(100%, 310px);
  aspect-ratio: 1;
}

.progress-ring {
  display: block;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.ring-track,
.ring-progress {
  fill: none;
  stroke-width: 8;
}

.ring-track {
  stroke: var(--ring);
}

.ring-progress {
  stroke: var(--accent);
  stroke-linecap: round;
  stroke-dasharray: 804.25;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 0.25s linear;
}

.time-display {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(54px, 6vw, 72px);
  font-variant-numeric: tabular-nums;
  font-weight: 650;
  letter-spacing: -0.07em;
}

.colon {
  margin: 0 3px;
  color: var(--accent);
  transform: translateY(-3px);
}

.presets {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-1);
  width: 100%;
  margin-top: var(--sp-3);
}

.preset-button,
.apply-button,
.icon-button {
  border: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.preset-button {
  min-height: 42px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.preset-button:hover,
.preset-button.is-active {
  border-color: var(--accent);
  color: var(--accent-dark);
  background: rgba(217, 93, 57, 0.08);
}

.custom-time {
  width: 100%;
  margin-top: var(--sp-3);
  padding-top: var(--sp-3);
  border-top: 1px solid var(--line);
}

.custom-time > label {
  display: block;
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.custom-fields {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: var(--sp-1);
}

.field-wrap {
  display: flex;
  align-items: center;
  gap: 4px;
  min-width: 0;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 12px;
}

.field-wrap input {
  width: 100%;
  min-width: 0;
  height: 42px;
  border: 0;
  outline: 0;
  color: var(--text);
  background: transparent;
  font-weight: 700;
}

.apply-button {
  min-width: 60px;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  font-weight: 800;
}

.apply-button:hover,
.icon-button:hover {
  border-color: var(--text);
  background: rgba(32, 37, 34, 0.05);
}

.timer-actions {
  display: grid;
  grid-template-columns: 1fr 52px;
  gap: 12px;
  width: 100%;
  margin-top: var(--sp-3);
}

.primary-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
  border: 0;
  border-radius: var(--radius-sm);
  color: white;
  background: var(--accent-dark);
  box-shadow: 0 12px 28px rgba(184, 70, 39, 0.2);
  cursor: pointer;
  font-weight: 800;
  transition: background 160ms ease, transform 160ms ease;
}

.primary-button:hover {
  background: #96371f;
  transform: translateY(-1px);
}

.primary-button:active,
.preset-button:active,
.apply-button:active,
.icon-button:active {
  transform: translateY(1px);
}

.play-icon {
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 9px solid currentColor;
}

.primary-button.is-running .play-icon {
  width: 10px;
  height: 12px;
  border: 0;
  border-right: 3px solid currentColor;
  border-left: 3px solid currentColor;
}

.icon-button {
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
}

.icon-button svg {
  width: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.site-footer {
  min-height: 88px;
}

.toast {
  position: fixed;
  z-index: 10;
  right: 24px;
  bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  color: white;
  background: var(--text);
  box-shadow: 0 16px 40px rgba(32, 37, 34, 0.24);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 180ms ease, transform 180ms ease;
}

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

.toast-icon {
  color: #8dd2b5;
  font-weight: 800;
}

@keyframes pulse {
  50% {
    opacity: 0.35;
    transform: scale(1.35);
  }
}

@media (max-width: 900px) {
  .timer-card {
    grid-template-columns: 1fr;
    gap: var(--sp-4);
    padding: var(--sp-4);
    text-align: center;
  }

  .intro {
    margin: 0 auto;
  }

  .intro-copy {
    margin-right: auto;
    margin-left: auto;
  }

  .timer-panel {
    max-width: 420px;
    margin: 0 auto;
  }
}

@media (max-width: 560px) {
  .app-shell {
    width: min(100% - 24px, 440px);
  }

  .site-header {
    min-height: 68px;
  }

  .keyboard-hint {
    display: none;
  }

  .timer-card {
    gap: 28px;
    min-height: auto;
    padding: 32px 20px;
    border-radius: var(--radius-md);
  }

  h1 {
    font-size: 38px;
  }

  .intro-copy {
    margin-top: var(--sp-2);
    font-size: 14px;
  }

  .eyebrow {
    margin-bottom: var(--sp-2);
  }

  .dial {
    width: 248px;
  }

  .time-display {
    font-size: 58px;
  }

  .presets {
    margin-top: var(--sp-2);
  }

  .custom-time {
    margin-top: var(--sp-2);
    padding-top: var(--sp-2);
  }

  .site-footer {
    justify-content: center;
    min-height: 68px;
  }

  .site-footer #today {
    display: none;
  }

  .toast {
    right: 12px;
    bottom: 12px;
    left: 12px;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}