:root {
  color-scheme: light;
  --paper: #f4f1e9;
  --ink: #202722;
  --muted: #5c655d;
  --line: #c9c9bd;
  --accent: #a63e2d;
  --accent-text: #fffaf4;
  font-family: "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  line-height: 1.45;
}

body[data-phase="break"] {
  --accent: #3f665b;
}

.site-header,
.layout {
  width: min(100% - 2.5rem, 71rem);
  margin-inline: auto;
}

.site-header {
  padding-top: 1.7rem;
}

.brand-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--ink);
}

.brand-mark {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.1em;
  line-height: 1;
}

.brand-caption {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.13em;
}

.site-header h1 {
  margin: 2.1rem 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3.5rem, 6.6vw, 5.7rem);
  font-weight: 700;
  letter-spacing: -0.075em;
  line-height: 0.98;
}

.site-header h1 span {
  color: var(--accent);
}

.site-header p {
  margin: 1rem 0 2.4rem;
  color: var(--muted);
  font-size: 1rem;
}

.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--ink);
}

.section-heading h2 {
  margin: 0;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.timer-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(17rem, 0.8fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  padding-block: 2.3rem 3.7rem;
}

.dial {
  position: relative;
  display: grid;
  place-items: center;
  width: min(100%, 24rem);
  aspect-ratio: 1;
  margin-inline: auto;
  border-radius: 50%;
  background: conic-gradient(
    from -90deg,
    var(--accent) 0 var(--progress, 100%),
    var(--line) var(--progress, 100%) 100%
  );
}

.dial::before {
  position: absolute;
  inset: 0.48rem;
  border-radius: 50%;
  background: var(--paper);
  content: "";
}

.dial::after {
  position: absolute;
  inset: 1.45rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.dial-content {
  position: relative;
  z-index: 1;
  width: 100%;
  padding-inline: 1.25rem;
  text-align: center;
}

#current-phase {
  margin: 0 0 0.9rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.timer-display {
  display: block;
  font-family: "Cascadia Mono", Consolas, "Liberation Mono", monospace;
  font-size: clamp(3.6rem, 7.8vw, 6.9rem);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  letter-spacing: -0.095em;
  line-height: 1;
  white-space: nowrap;
}

.timer-display.is-long {
  font-size: clamp(2.8rem, 6vw, 5rem);
}

#timer-status {
  min-height: 1.4rem;
  margin: 1.1rem 0 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.timer-aside {
  padding-left: clamp(1.5rem, 3vw, 3rem);
  border-left: 1px solid var(--line);
}

.phase-choice {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  margin: 0;
  padding: 0;
  border: 0;
}

.phase-choice legend {
  margin-bottom: 0.95rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.phase-option {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 3.4rem;
  border: 1px solid var(--line);
  color: var(--muted);
  cursor: pointer;
  font-size: 0.94rem;
  font-weight: 650;
}

.phase-option input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.phase-option:has(input:checked) {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.phase-option:has(input:focus-visible) {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.control-note {
  max-width: 18rem;
  margin: 2rem 0 1.1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.timer-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

button {
  min-height: 3.2rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

button:hover:not(:disabled) {
  background: #e6e2d7;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.button-primary {
  grid-column: 1 / -1;
  min-height: 4.25rem;
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-text);
  font-size: 1.1rem;
}

.button-primary:hover:not(:disabled) {
  background: #8f3426;
}

body[data-phase="break"] .button-primary:hover:not(:disabled) {
  background: #33564c;
}

#next-phase-button {
  width: 100%;
  margin-top: 0.7rem;
}

.settings-link {
  display: inline-block;
  margin-top: 2.15rem;
  color: var(--ink);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration-color: var(--accent);
  text-underline-offset: 0.28rem;
}

.settings-link span {
  margin-left: 0.35rem;
  color: var(--accent);
}

.settings-panel {
  display: grid;
  grid-template-columns: minmax(12rem, 0.75fr) minmax(0, 1.5fr);
  gap: clamp(2rem, 6vw, 6rem);
  padding-block: 2rem 5rem;
  border-top: 1px solid var(--ink);
}

.settings-heading h2 {
  margin: 0 0 0.65rem;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 3vw, 2.7rem);
  letter-spacing: -0.055em;
  line-height: 1.1;
}

.settings-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.settings-heading p + p {
  margin-top: 0.8rem;
}

.settings-panel form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.3rem;
}

.duration-group {
  margin: 0;
  padding: 0;
  border: 0;
}

.duration-group legend {
  margin-bottom: 0.75rem;
  font-weight: 750;
}

.duration-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.duration-fields label {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.duration-fields input {
  width: 100%;
  min-height: 3rem;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
}

.sound-option,
.settings-panel form > button,
#settings-status {
  grid-column: 1 / -1;
}

.sound-option {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  cursor: pointer;
  font-size: 0.9rem;
}

.sound-option input {
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--accent);
}

.settings-panel form > button {
  width: fit-content;
  min-width: 12rem;
}

#settings-status {
  min-height: 1.3rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

#settings-status[data-error="true"] {
  color: #a63e2d;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

@media (max-width: 55rem) {
  .timer-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding-block: 2.5rem 3.5rem;
  }

  .timer-aside {
    padding: 2rem 0 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .settings-panel {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 38rem) {
  .site-header,
  .layout {
    width: min(100% - 2rem, 71rem);
  }

  .site-header h1 {
    margin-top: 2rem;
  }

  .site-header p {
    margin-bottom: 2.5rem;
  }

  .dial {
    width: min(100%, 22rem);
  }

  .timer-display {
    font-size: clamp(3.2rem, 14vw, 5rem);
  }

  .settings-panel form {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}