:root {
  color-scheme: dark;
  --bg: #090d12;
  --surface: #121820;
  --border: #28313c;
  --text: #f4f6f8;
  --muted: #98a4b2;
  --accent: #7be0c3;
  --dial-size: min(77vh, 79vw, 1000px);
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; width: 100%; height: 100%; }
body { background: var(--bg); color: var(--text); overflow: hidden; }
button, input { font: inherit; }
button { cursor: pointer; -webkit-tap-highlight-color: transparent; }
button, input, summary { outline-offset: 5px; }
:focus-visible { outline: 2px solid var(--accent); }
.icon-library { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.stage { width: 100%; height: 100%; height: 100dvh; min-height: 220px; display: grid; place-items: center; position: relative; isolation: isolate; background: radial-gradient(ellipse at 50% 46%, #111b23 0, #0d131a 33%, var(--bg) 68%); }
.stage::before { content: ""; pointer-events: none; position: absolute; inset: 0; z-index: -1; background: radial-gradient(ellipse at 50% 46%, color-mix(in srgb, var(--accent) 5%, transparent), transparent 53%); transition: background 1s; }
.top-controls { position: absolute; top: max(24px, env(safe-area-inset-top)); right: max(28px, env(safe-area-inset-right)); display: flex; gap: 10px; z-index: 2; }
.icon-button { width: 46px; height: 46px; border: 1px solid transparent; background: transparent; color: #95a1ae; border-radius: 14px; display: inline-flex; align-items: center; justify-content: center; transition: color .2s, background .2s, border .2s, opacity .35s; }
.icon-button:hover { color: var(--text); background: #ffffff08; border-color: #ffffff12; }
.icon-button:active, .play-button:active { transform: scale(.95); }
.watch { width: var(--dial-size); height: var(--dial-size); position: relative; margin-top: -16px; }
.dial { width: 100%; height: 100%; overflow: visible; }
.guide { fill: none; stroke: #ffffff06; stroke-width: 1; }
.inner-guide { fill: none; stroke: #ffffff04; stroke-width: 1; }
.tick { stroke: #ffffff1a; stroke-width: 1; }
.tick.major { stroke: #ffffff3b; stroke-width: 1.4; }
.segment-track { fill: none; stroke-width: 9; opacity: .15; }
.segment-fill { fill: none; stroke-width: 9; }
.position { fill: #fff; stroke: var(--accent); stroke-width: 2; filter: drop-shadow(0 0 4px var(--accent)); }
.position-glow { fill: var(--accent); opacity: .12; }
.readout { position: absolute; inset: 21% 14%; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; pointer-events: none; }
.countdown { font-size: calc(var(--dial-size) * .208); font-weight: 300; font-variant-numeric: tabular-nums lining-nums; line-height: 1.07; letter-spacing: -.055em; white-space: nowrap; padding-right: .055em; color: #f1f5f7; text-shadow: 0 3px 30px #0003; }
.phase-text { color: var(--accent); font-size: clamp(18px, calc(var(--dial-size) * .039), 39px); line-height: 1.4; font-weight: 400; margin-top: 22px; max-width: 100%; overflow-wrap: anywhere; white-space: pre-wrap; text-wrap: balance; transition: color .4s; }
.phase-text.long { font-size: clamp(16px, calc(var(--dial-size) * .030), 30px); }
.transport { position: absolute; bottom: max(27px, env(safe-area-inset-bottom)); left: 50%; transform: translateX(-50%); display: flex; align-items: center; gap: 18px; padding: 7px 13px; border-radius: 40px; transition: opacity .6s; }
.transport::before { content: ""; position: absolute; inset: 0; background: #101720b3; border: 1px solid #ffffff09; border-radius: inherit; z-index: -1; }
.play-button { width: 57px; height: 57px; border: 1px solid #ffffff20; border-radius: 50%; background: #ecf2f3; color: #111820; display: grid; place-items: center; transition: background .2s, transform .15s; }
.play-button:hover { background: var(--accent); }
.play-button .icon { width: 24px; height: 24px; }
.stage.quiet .transport { opacity: 0; }
.stage.quiet .transport:hover, .stage.quiet .transport:focus-within { opacity: 1; }
.stage.quiet .top-controls .icon-button { opacity: .32; }
.stage.quiet .top-controls .icon-button:hover, .stage.quiet .top-controls .icon-button:focus-visible { opacity: 1; }
.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; }
.notice { position: absolute; bottom: 112px; max-width: min(460px, 90vw); padding: 12px 18px; border: 1px solid var(--border); border-radius: 12px; background: #17202b; font-size: 14px; text-align: center; }
dialog { color: var(--text); background: var(--surface); border: 1px solid #ffffff12; border-radius: 24px; padding: 0; width: min(510px, calc(100vw - 32px)); max-height: calc(100dvh - 40px); overflow: auto; box-shadow: 0 24px 100px #0008; scrollbar-width: thin; scrollbar-color: #35404c transparent; }
dialog::backdrop { background: #03070bac; backdrop-filter: blur(14px); }
.panel-header { padding: 27px 28px 20px; display: flex; justify-content: space-between; align-items: flex-start; }
.eyebrow { font-size: 12px; letter-spacing: .18em; color: #9facba; margin: 0 0 9px; font-weight: 600; }
h1 { margin: 0; font-size: 30px; font-weight: 500; letter-spacing: -.04em; }
.panel-header .icon-button { width: 36px; height: 36px; margin-right: -7px; margin-top: -4px; }
.panel-content { padding: 0 28px 24px; }
.panel-intro { margin: 0 0 24px; font-size: 15px; color: var(--muted); }
.slot-card { border: 1px solid var(--border); background: #0d131a; border-radius: 15px; margin-top: 12px; padding: 17px 18px 18px; --slot-color: #7be0c3; }
.slot-card[data-slot="1"] { --slot-color: #f4bc6a; }
.slot-card[data-slot="2"] { --slot-color: #89adff; }
.slot-header { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.slot-number { font-size: 12px; color: var(--slot-color); font-variant-numeric: tabular-nums; font-weight: 600; letter-spacing: .03em; }
h2 { font-size: 16px; font-weight: 500; margin: 0; flex: 1; }
.color-control { width: 22px; height: 22px; display: flex; align-items: center; justify-content: center; }
input[type="color"] { padding: 0; border: 0; width: 22px; height: 22px; background: transparent; cursor: pointer; }
input[type="color"]::-webkit-color-swatch-wrapper { padding: 2px; }
input[type="color"]::-webkit-color-swatch { border: 0; border-radius: 50%; }
input[type="color"]::-moz-color-swatch { border: 0; border-radius: 50%; }
.duration-row { display: flex; align-items: flex-end; gap: 10px; margin-bottom: 15px; }
.duration-row label { width: 90px; }
label { font-size: 14px; color: #a6b2bf; }
input[type="number"], input[type="text"] { display: block; width: 100%; border: 1px solid var(--border); border-radius: 8px; background: #151d26; color: var(--text); padding: 10px 12px; margin-top: 7px; transition: border-color .2s; }
input:hover { border-color: #485566; }
input:focus { border-color: var(--accent); }
input[type="number"] { font-size: 22px; font-weight: 400; font-variant-numeric: tabular-nums; padding: 8px 11px; }
input[type="text"] { font-size: 16px; }
.duration-colon { font-size: 21px; line-height: 43px; color: #5d6a79; }
.message-label { display: block; }
.field-hint { font-size: 13px; color: var(--muted); line-height: 1.5; margin: 15px 0 22px; }
.sound-row { display: flex; position: relative; align-items: center; gap: 14px; cursor: pointer; }
.sound-row > span:first-child { flex: 1; }
.sound-row strong { display: block; color: #e0e7ed; font-size: 15px; font-weight: 500; }
.sound-row small { display: block; margin-top: 5px; font-size: 13px; line-height: 1.5; }
.sound-row input { position: absolute; right: 0; width: 44px; height: 26px; opacity: 0; cursor: pointer; z-index: 1; margin: 0; }
.switch-track { width: 44px; height: 26px; border-radius: 20px; background: #384452; padding: 3px; transition: background .2s; }
.switch-track::after { content: ""; display: block; width: 20px; height: 20px; background: #c6d1dc; border-radius: 50%; transition: transform .2s, background .2s; }
.sound-row input:checked + .switch-track { background: #7be0c3; }
.sound-row input:checked + .switch-track::after { transform: translateX(18px); background: #0d2520; }
.sound-row input:focus-visible + .switch-track { outline: 2px solid var(--accent); outline-offset: 4px; }
.shortcuts { margin-top: 24px; border-top: 1px solid var(--border); padding-top: 18px; font-size: 14px; color: var(--muted); }
summary { cursor: pointer; }
.shortcuts > div { display: grid; grid-template-columns: 1fr auto; gap: 9px 20px; margin-top: 15px; font-size: 13px; }
kbd { background: #1f2935; border: 1px solid #35404c; border-radius: 5px; padding: 2px 7px; font-family: inherit; text-align: center; }
.panel-footer { border-top: 1px solid var(--border); padding: 20px 28px; display: flex; align-items: center; gap: 18px; background: var(--surface); }
.panel-footer p { flex: 1; font-size: 12px; line-height: 1.5; margin: 0; color: var(--muted); }
.save-button { border: 0; background: #7be0c3; color: #092219; border-radius: 10px; padding: 12px 15px; display: flex; gap: 9px; align-items: center; font-size: 14px; font-weight: 600; }
.save-button:hover { background: #9debd4; }
.save-button .icon { width: 17px; height: 17px; stroke-width: 2; }
.form-error { font-size: 14px; color: #ffb3a9; line-height: 1.5; margin-bottom: 0; }
@media (max-width: 600px) {
  :root { --dial-size: min(73vh, 95vw); }
  .top-controls { top: 16px; right: 14px; gap: 5px; }
  .watch { margin-top: -25px; }
  .phase-text { margin-top: 16px; }
  .transport { bottom: max(30px, env(safe-area-inset-bottom)); }
  dialog { border-radius: 20px; }
  .panel-header { padding: 23px 22px 18px; }
  .panel-content { padding: 0 22px 20px; }
  .panel-footer { padding: 18px 22px; gap: 10px; }
}
@media (max-height: 520px) and (min-width: 601px) {
  :root { --dial-size: min(91vh, 70vw); }
  .watch { margin-top: 0; }
  .transport { bottom: 16px; left: auto; right: 16px; transform: none; flex-direction: column; gap: 8px; }
  .transport::before { border-radius: 40px; }
  .top-controls { top: 12px; right: 16px; flex-direction: column; }
  .phase-text { margin-top: 12px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; } }