/* every10s — premium minimalist timer */

:root {
  color-scheme: light dark;

  --bg: #f6f3ee;
  --bg-elevated: #fffdf9;
  --bg-muted: #ece7df;
  --ink: #1c1a17;
  --ink-soft: #5c564e;
  --ink-faint: #8a8378;
  --line: rgba(28, 26, 23, 0.1);
  --accent: #b8832f;
  --accent-strong: #9a6c1f;
  --accent-soft: rgba(184, 131, 47, 0.16);
  --shadow: 0 18px 50px rgba(28, 26, 23, 0.08);
  --shadow-btn: 0 14px 34px rgba(184, 131, 47, 0.35);
  --ring-track: rgba(28, 26, 23, 0.08);
  --focus: #b8832f;
  --danger-soft: rgba(28, 26, 23, 0.04);
  --flash: rgba(184, 131, 47, 0.28);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 28px;
  --radius-full: 999px;

  --font-display: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  --font-body: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --space: clamp(1.25rem, 4vw, 2rem);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141414;
    --bg-elevated: #1c1c1c;
    --bg-muted: #262626;
    --ink: #f3efe8;
    --ink-soft: #b8b0a4;
    --ink-faint: #857e74;
    --line: rgba(243, 239, 232, 0.12);
    --accent: #d4a84b;
    --accent-strong: #e2ba63;
    --accent-soft: rgba(212, 168, 75, 0.18);
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
    --shadow-btn: 0 14px 34px rgba(212, 168, 75, 0.28);
    --ring-track: rgba(243, 239, 232, 0.1);
    --focus: #d4a84b;
    --danger-soft: rgba(243, 239, 232, 0.05);
    --flash: rgba(212, 168, 75, 0.32);
  }
}

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

html {
  height: 100%;
}

body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(1200px 700px at 50% -10%, var(--accent-soft), transparent 60%),
    radial-gradient(900px 500px at 100% 100%, rgba(28, 26, 23, 0.04), transparent 55%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.5;
}

@media (prefers-color-scheme: dark) {
  body {
    background:
      radial-gradient(1100px 650px at 50% -15%, var(--accent-soft), transparent 58%),
      radial-gradient(800px 480px at 0% 100%, rgba(212, 168, 75, 0.05), transparent 50%),
      var(--bg);
  }
}

button,
input {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: inherit;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 1000;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: var(--bg);
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.page {
  width: min(100%, 42rem);
  margin: 0 auto;
  min-height: 100vh;
  min-height: 100dvh;
  padding: var(--space);
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 1.5rem;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.25rem;
}

.wordmark {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-size: clamp(1.08rem, 2.5vw, 1.28rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  color: var(--ink);
  line-height: 1;
}

.wordmark-mark {
  display: inline-grid;
  place-items: center;
  width: 1.35rem;
  height: 1.35rem;
  color: var(--accent);
  flex-shrink: 0;
}

.wordmark-mark svg {
  display: block;
  width: 100%;
  height: 100%;
}

.wordmark-mark-dot {
  opacity: 0.95;
}

.wordmark-mark-arc {
  opacity: 0.55;
}

.wordmark-text {
  display: inline-flex;
  align-items: baseline;
}

.wordmark-every {
  font-weight: 500;
  color: var(--ink-soft);
  letter-spacing: -0.045em;
}

.wordmark-ten {
  font-weight: 650;
  color: var(--accent);
  letter-spacing: -0.06em;
  margin-inline: 0.01em;
}

.wordmark-s {
  font-weight: 500;
  color: var(--ink-soft);
  letter-spacing: -0.04em;
}

.seo-lead {
  margin: -0.35rem 0 0;
  max-width: 26rem;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--ink-faint);
}

.seo-faq {
  margin-top: 1.35rem;
  text-align: left;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--bg-elevated) 70%, transparent);
  padding: 0.55rem 0.8rem;
}

.faq-list summary {
  cursor: pointer;
  list-style: none;
  font-size: 0.92rem;
  color: var(--ink-soft);
  letter-spacing: -0.01em;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  float: right;
  color: var(--ink-faint);
}

.faq-list details[open] summary::after {
  content: "–";
}

.faq-list details p {
  margin: 0.45rem 0 0.2rem;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--ink-faint);
}

.icon-btn {
  width: 2.5rem;
  height: 2.5rem;
  display: inline-grid;
  place-items: center;
  border-radius: var(--radius-full);
  color: var(--ink-soft);
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-elevated) 85%, transparent);
  transition:
    color 0.2s var(--ease),
    background 0.2s var(--ease),
    border-color 0.2s var(--ease),
    transform 0.2s var(--ease);
}

.icon-btn:hover {
  color: var(--ink);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  background: var(--bg-elevated);
}

.icon-btn:active {
  transform: scale(0.96);
}

.main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: clamp(1.25rem, 3.5vh, 2rem);
  padding: 0.5rem 0 1rem;
}

.tagline {
  margin: 0;
  font-size: clamp(1rem, 2.6vw, 1.15rem);
  color: var(--ink-soft);
  letter-spacing: -0.01em;
}

.timer {
  --progress: 1;
  position: relative;
  width: min(72vw, 18.5rem);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 50%;
  transition: transform 0.35s var(--ease);
}

.timer.is-pulse {
  animation: timer-pulse 0.55s var(--ease);
}

.ring {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.ring-track,
.ring-progress {
  fill: none;
  stroke-width: 3.5;
}

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

.ring-progress {
  stroke: var(--accent);
  stroke-linecap: round;
  stroke-dasharray: 339.292;
  stroke-dashoffset: calc(339.292 * (1 - var(--progress)));
  transition: stroke 0.25s var(--ease);
  filter: drop-shadow(0 0 10px color-mix(in srgb, var(--accent) 35%, transparent));
}

.timer-face {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  width: 78%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: color-mix(in srgb, var(--bg-elevated) 88%, transparent);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.timer-value {
  font-family: var(--font-display);
  font-size: clamp(3.4rem, 14vw, 5rem);
  font-weight: 500;
  letter-spacing: -0.06em;
  line-height: 0.95;
  font-variant-numeric: tabular-nums;
}

.timer-unit {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  width: min(100%, 16rem);
}

.start-btn {
  width: 100%;
  min-height: 3.6rem;
  padding: 0.95rem 1.5rem;
  border-radius: var(--radius-full);
  background: linear-gradient(180deg, var(--accent-strong), var(--accent));
  color: #1a140a;
  font-size: 1.15rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  box-shadow: var(--shadow-btn);
  transition:
    transform 0.22s var(--ease),
    box-shadow 0.22s var(--ease),
    filter 0.22s var(--ease);
}

.start-btn:hover {
  transform: translateY(-2px) scale(1.015);
  filter: brightness(1.04);
  box-shadow: 0 18px 40px color-mix(in srgb, var(--accent) 42%, transparent);
}

.start-btn:active {
  transform: translateY(0) scale(0.985);
}

.start-btn[aria-pressed="true"] {
  background: linear-gradient(180deg, var(--bg-elevated), var(--bg-muted));
  color: var(--ink);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--line);
}

@media (prefers-color-scheme: dark) {
  .start-btn {
    color: #1a140a;
  }

  .start-btn[aria-pressed="true"] {
    color: var(--ink);
  }
}

.text-btn {
  min-height: 2.5rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  color: var(--ink-soft);
  font-size: 0.95rem;
  transition:
    color 0.2s var(--ease),
    background 0.2s var(--ease);
}

.text-btn:hover {
  color: var(--ink);
  background: var(--danger-soft);
}

.sound-count {
  margin: 0;
  min-height: 1.4em;
  font-size: 0.95rem;
  color: var(--ink-faint);
  letter-spacing: -0.01em;
}

.reliability-note {
  margin: 0;
  max-width: 22rem;
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--ink-faint);
}

.site-footer {
  padding: 1.25rem 0 0.5rem;
  border-top: 1px solid var(--line);
  text-align: center;
}

.footer-heading {
  margin: 0 0 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.footer-copy {
  margin: 0 auto;
  max-width: 34rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.55;
}

.flash {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: var(--flash);
  opacity: 0;
  z-index: 50;
}

.flash.is-active {
  animation: screen-flash 0.35s var(--ease);
}

.settings-dialog {
  position: fixed;
  z-index: 90;
  margin: 0;
  inset: 0;
  width: 100%;
  max-width: none;
  max-height: none;
  height: 100%;
  padding: 0;
  border: none;
  background: rgba(12, 11, 10, 0.42);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  color: var(--ink);
  overflow: hidden;
}

.settings-dialog::backdrop {
  background: transparent;
}

.settings-sheet {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-bottom: none;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  box-shadow: var(--shadow);
  max-height: min(88vh, 40rem);
  overflow: auto;
  padding: 1.1rem 1.15rem 1.5rem;
  overscroll-behavior: contain;
}

.settings-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
  backdrop-filter: blur(8px);
  z-index: 1;
  padding-bottom: 0.35rem;
}

.settings-header h2 {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.settings-form {
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
}

.setting-group {
  margin: 0;
  padding: 0;
  border: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.setting-group legend,
.field-label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.field-label {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.55rem;
  text-align: left;
}

.field-label[for="volume"] {
  flex-direction: row;
  align-items: baseline;
  justify-content: space-between;
}

.volume-value {
  letter-spacing: 0;
  text-transform: none;
  font-weight: 500;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chip {
  position: relative;
  cursor: pointer;
}

.chip input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.chip span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.35rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink-soft);
  font-size: 0.92rem;
  transition:
    background 0.2s var(--ease),
    border-color 0.2s var(--ease),
    color 0.2s var(--ease),
    transform 0.2s var(--ease);
}

.chip:hover span {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
  color: var(--ink);
}

.chip input:checked + span {
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  color: var(--ink);
  font-weight: 600;
}

.chip input:focus-visible + span {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

#custom-interval {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--bg);
  letter-spacing: 0;
  text-transform: none;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

#custom-interval:focus {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

#volume {
  width: 100%;
  appearance: none;
  height: 0.35rem;
  border-radius: var(--radius-full);
  background: linear-gradient(
    to right,
    var(--accent) 0%,
    var(--accent) var(--volume-pct, 70%),
    var(--bg-muted) var(--volume-pct, 70%),
    var(--bg-muted) 100%
  );
  outline: none;
}

#volume::-webkit-slider-thumb {
  appearance: none;
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-elevated);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  cursor: pointer;
}

#volume::-moz-range-thumb {
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg-elevated);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  cursor: pointer;
}

#volume:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 4px;
}

.toggles {
  gap: 0.65rem;
}

.toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 2.5rem;
  padding: 0.35rem 0.15rem;
  cursor: pointer;
  text-align: left;
}

.toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.toggle-ui {
  position: relative;
  width: 2.6rem;
  height: 1.5rem;
  flex-shrink: 0;
  border-radius: var(--radius-full);
  background: var(--bg-muted);
  border: 1px solid var(--line);
  transition: background 0.2s var(--ease);
}

.toggle-ui::after {
  content: "";
  position: absolute;
  top: 0.14rem;
  left: 0.14rem;
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 50%;
  background: var(--bg-elevated);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s var(--ease);
}

.toggle input:checked + .toggle-ui {
  background: var(--accent);
  border-color: transparent;
}

.toggle input:checked + .toggle-ui::after {
  transform: translateX(1.05rem);
}

.toggle input:focus-visible + .toggle-ui {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.toggle-label {
  font-size: 1rem;
  color: var(--ink);
}

.preview-btn {
  align-self: flex-start;
  border: 1px solid var(--line);
  padding-inline: 0.95rem;
}

.toggle.is-disabled {
  opacity: 0.45;
  pointer-events: none;
}

@media (min-width: 640px) {
  .settings-sheet {
    left: 50%;
    right: auto;
    bottom: auto;
    top: 50%;
    width: min(92vw, 26rem);
    max-height: min(86vh, 38rem);
    transform: translate(-50%, -50%);
    border-radius: var(--radius-lg);
    border-bottom: 1px solid var(--line);
    padding: 1.25rem 1.35rem 1.5rem;
  }
}

@keyframes timer-pulse {
  0% {
    transform: scale(1);
  }
  35% {
    transform: scale(1.035);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes screen-flash {
  0% {
    opacity: 0;
  }
  30% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

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

  .timer.is-pulse,
  .flash.is-active {
    animation: none !important;
  }

  .start-btn:hover {
    transform: none;
  }
}

@media (max-width: 380px) {
  .page {
    padding-inline: 1rem;
  }

  .timer {
    width: min(78vw, 16.5rem);
  }
}