:root {
  --kosmos-ink-950: #06101e;
  --kosmos-ink-900: #091829;
  --kosmos-ink-850: #0d2035;
  --kosmos-ink-800: #122942;
  --kosmos-panel: rgba(255, 255, 255, .055);
  --kosmos-panel-strong: rgba(255, 255, 255, .09);
  --kosmos-line: rgba(255, 255, 255, .13);
  --kosmos-line-soft: rgba(255, 255, 255, .07);
  --kosmos-text: #f7fafc;
  --kosmos-muted: #98a8ba;
  --kosmos-cyan: #39d6f5;
  --kosmos-lime: #b9ec46;
  --kosmos-magenta: #f05bb5;
  --kosmos-amber: #ffc75a;
  --kosmos-danger: #ff6b7a;
  --kosmos-success: #62e6a6;
  --kosmos-font-sans: "Microsoft JhengHei", "Noto Sans TC", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --kosmos-font-mono: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  --ink: var(--kosmos-ink-950);
  --muted: #718096;
  --panel: #f5f1e8;
  --lime: var(--kosmos-lime);
  --cyan: var(--kosmos-cyan);
  --amber: #E6CEA7;
  --danger: var(--kosmos-danger);
  --phosphor-green: #39ff14;
  --phosphor-white: #f5f5f5;
  --phosphor-amber: #E6CEA7;
  --countdown-normal: #0C0C0C;
  --iron-gray: #3A3D46;
  --phosphor-blue: #00E5FF;
  --phosphor-red: #8b0000;
  --screen-black: #000;
  --screen-navy: #001a33;
  --screen-watch: #C9CFBF;
  --screen-gray: #d9d9d9;
  color-scheme: dark;
  font-family: var(--kosmos-font-sans);
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
  overscroll-behavior: none;
}

body {
  background: var(--kosmos-ink-950);
  color: var(--kosmos-text);
}

button,
input,
select,
a {
  font: inherit;
}

button,
select,
a {
  touch-action: manipulation;
}

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

button {
  border: 0;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: .42;
}

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

.app-shell,
.screen {
  min-height: 100dvh;
}

.screen {
  position: relative;
  display: none;
  overflow: hidden;
}

.screen.is-active {
  display: flex;
  flex-direction: column;
}

/* Menu */

.menu-screen {
  background:
    radial-gradient(circle at 88% 6%, rgba(57, 214, 245, .22), transparent 28%),
    radial-gradient(circle at 12% 85%, rgba(185, 236, 70, .12), transparent 32%),
    linear-gradient(125deg, var(--kosmos-ink-950) 0 54%, var(--kosmos-ink-900) 54% 100%);
}

.menu-screen::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 214, 245, .035) 1px, transparent 1px);
  background-size: 100% 32px, 32px 100%;
  content: "";
  pointer-events: none;
}

.menu-screen::after {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(110deg, transparent 0 64%, rgba(57, 214, 245, .08) 64% 64.3%, transparent 64.3%),
    linear-gradient(110deg, transparent 0 69%, rgba(255, 199, 90, .08) 69% 69.25%, transparent 69.25%);
  content: "";
  pointer-events: none;
}

.kosmos-home-header {
  position: relative;
  z-index: 2;
  display: flex;
  width: min(1180px, calc(100% - 3rem));
  margin-inline: auto;
  align-items: center;
  justify-content: space-between;
  padding-block: max(1.25rem, env(safe-area-inset-top)) 1rem;
}

.kosmos-home-brand {
  display: grid;
  flex: 0 0 auto;
  justify-self: start;
  justify-items: start;
  gap: .32rem;
}

.kosmos-brand-mark {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  color: var(--kosmos-muted);
  font-family: var(--kosmos-font-mono);
  font-size: .72rem;
  font-weight: 400;
  letter-spacing: .18em;
  line-height: 1.2;
  text-transform: uppercase;
  white-space: nowrap;
}

.kosmos-brand-mark::before {
  display: block;
  flex: 0 0 .6rem;
  width: .6rem;
  height: .6rem;
  border: 2px solid var(--kosmos-cyan);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(57, 214, 245, .12);
  content: "";
}

.kosmos-brand-tagline {
  margin: 0 0 0 1.3rem;
  color: var(--kosmos-amber);
  font-family: var(--kosmos-font-sans);
  font-size: .62rem;
  font-weight: 800;
  letter-spacing: .26em;
  line-height: 1;
  text-shadow:
    0 0 5px rgba(255, 199, 90, .78),
    0 0 14px rgba(255, 199, 90, .46);
  white-space: nowrap;
}

.menu-content {
  position: relative;
  z-index: 1;
  width: min(1180px, calc(100% - 40px));
  margin: auto;
  padding: 16px 0 36px;
}

.eyebrow,
.timer-kicker {
  margin: 0 0 12px;
  color: var(--lime);
  font-size: clamp(.72rem, 1vw, .9rem);
  font-weight: 800;
  letter-spacing: .28em;
  text-transform: uppercase;
}

.menu-content h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(3.6rem, 8vw, 7.5rem);
  font-weight: 900;
  line-height: .8;
  letter-spacing: 0;
}

.menu-content h1 span {
  color: var(--cyan);
}

.menu-subtitle {
  margin: 24px 0 36px;
  color: #aebbd0;
  font-size: clamp(1rem, 1.5vw, 1.25rem);
}

.menu-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.menu-card {
  position: relative;
  display: grid;
  min-height: 220px;
  padding: 22px;
  overflow: hidden;
  border: 1px solid var(--kosmos-line);
  border-radius: 10px;
  background: var(--kosmos-panel);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .08),
    0 14px 34px rgba(0, 0, 0, .16);
  color: var(--kosmos-text);
  text-align: left;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.menu-card:hover {
  z-index: 1;
  border-color: var(--card-color);
  background: var(--kosmos-panel-strong);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .12),
    0 0 18px rgba(57, 214, 245, .18),
    0 18px 42px rgba(0, 0, 0, .24);
  transform: translateY(-5px);
}

.menu-card::after {
  position: absolute;
  right: -25px;
  bottom: -45px;
  width: 120px;
  height: 120px;
  border: 24px solid var(--card-color);
  border-radius: 50%;
  content: "";
  opacity: .1;
}

.menu-card--clock { --card-color: var(--cyan); }
.menu-card--stopwatch { --card-color: var(--lime); }
.menu-card--multi { --card-color: var(--kosmos-magenta); }
.menu-card--countdown { --card-color: var(--kosmos-amber); }

.menu-card__number {
  color: var(--card-color);
  font-family: var(--kosmos-font-mono);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .16em;
}

.status-label {
  position: absolute;
  top: 18px;
  right: 18px;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
  padding: 4px 9px;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-family: var(--kosmos-font-mono);
  font-size: .64rem;
  font-weight: 800;
  letter-spacing: .14em;
  line-height: 1;
  text-transform: uppercase;
  pointer-events: none;
}

.status-label--stable {
  background: rgba(98, 230, 166, .11);
  color: var(--kosmos-success);
  box-shadow: 0 0 14px rgba(98, 230, 166, .24);
}

.status-label--beta {
  background: rgba(255, 199, 90, .12);
  color: var(--kosmos-amber);
  box-shadow: 0 0 14px rgba(255, 199, 90, .22);
}

.status-label--soon {
  background: rgba(152, 168, 186, .1);
  color: var(--kosmos-muted);
  box-shadow: 0 0 10px rgba(152, 168, 186, .14);
}

.menu-card__icon {
  align-self: end;
  color: var(--card-color);
  font-size: 2.5rem;
  line-height: 1;
}

.menu-card__title {
  align-self: end;
  margin-top: 18px;
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  font-weight: 800;
}

.menu-card__hint {
  align-self: end;
  margin-top: 5px;
  color: #9dabc0;
  font-size: .82rem;
}

.menu-footer {
  margin: 24px 0 0;
  color: #718096;
  font-family: var(--kosmos-font-mono);
  font-size: .75rem;
  letter-spacing: .05em;
}

/* Shared toolbar */

.tool-toolbar {
  position: relative;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 70px;
  padding: 10px max(18px, env(safe-area-inset-left));
  border-bottom: 1px solid rgba(255, 255, 255, .15);
  background: rgba(5, 10, 16, .9);
  color: #f5f5f5;
  transition: opacity 250ms ease, transform 250ms ease;
}

.screen.toolbar-hidden .tool-toolbar {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-100%);
}

.toolbar-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.toolbar-title {
  padding-left: 4px;
  font-size: .9rem;
  font-weight: 800;
  letter-spacing: .12em;
}

.toolbar-button,
.quick-controls button {
  min-height: 44px;
  padding: 0 15px;
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 6px;
  background: rgba(255, 255, 255, .09);
  color: #f5f5f5;
  font-size: .86rem;
  font-weight: 700;
}

a.toolbar-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.toolbar-button:hover,
.quick-controls button:hover {
  background: rgba(255, 255, 255, .18);
}

.toolbar-button--accent {
  border-color: var(--lime);
  background: var(--lime);
  color: var(--ink);
}

.compact-field,
.sound-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  color: #abb8ca;
  font-size: .76rem;
  font-weight: 700;
}

.compact-field select,
.compact-field input {
  min-height: 40px;
  padding: 0 10px;
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 5px;
  background: #172131;
  color: #fff;
}

.compact-field input {
  width: 66px;
}

.compact-field select:disabled {
  cursor: not-allowed;
  opacity: .45;
}

.sound-toggle {
  min-height: 42px;
  padding: 0 10px;
  cursor: pointer;
}

.sound-toggle input {
  width: 19px;
  height: 19px;
  accent-color: var(--lime);
}

/* Clock */

.clock-screen {
  --clock-color: var(--phosphor-green);
  --clock-background: var(--screen-black);
  background: var(--clock-background);
  color: var(--clock-color);
}

.clock-screen[data-background="gray"] {
  --clock-background: var(--screen-gray);
}

.clock-screen[data-background="navy"] {
  --clock-background: var(--screen-navy);
}

.clock-screen[data-background="watch"] {
  --clock-background: var(--screen-watch);
}

.clock-screen[data-color="white"] { --clock-color: var(--phosphor-white); }
.clock-screen[data-color="amber"] { --clock-color: var(--phosphor-amber); }
.clock-screen[data-color="red"] { --clock-color: var(--phosphor-red); }
.clock-screen[data-color="iron"] { --clock-color: var(--iron-gray); }

.clock-stage {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.clock-watch-case {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(30px, 5vw, 80px);
  width: min(1160px, 94vw);
  min-height: min(66vh, 570px);
  padding: clamp(58px, 6vw, 82px) clamp(42px, 6vw, 85px) clamp(38px, 5vw, 62px);
  border: clamp(10px, 1.3vw, 18px) solid #353b43;
  border-radius: clamp(22px, 3vw, 42px);
  outline: 3px solid #11151a;
  background:
    linear-gradient(var(--clock-background), var(--clock-background)) padding-box,
    linear-gradient(135deg, #68717c, #252a31) border-box;
  box-shadow:
    0 20px 50px rgba(0, 0, 0, .65),
    inset 0 0 0 5px #15191e,
    inset 0 0 45px rgba(0, 0, 0, .72),
    0 0 0 3px #626b75;
  overflow: hidden;
}

.watch-case__label {
  position: absolute;
  top: 18px;
  left: 50%;
  color: #a6afb8;
  font: 700 clamp(.55rem, .8vw, .74rem)/1 "Courier New", monospace;
  letter-spacing: .18em;
  text-shadow: 0 1px #000;
  transform: translateX(-50%);
  white-space: nowrap;
}

.watch-case__screw {
  position: absolute;
  width: 12px;
  height: 12px;
  border: 2px solid #111;
  border-radius: 50%;
  background: linear-gradient(135deg, #8a929a, #2d333a);
  box-shadow: inset 0 0 0 1px #aab0b6;
}

.watch-case__screw::after {
  position: absolute;
  top: 4px;
  left: 1px;
  width: 7px;
  height: 1px;
  background: #191c20;
  content: "";
  transform: rotate(-35deg);
}

.watch-case__screw--tl { top: 18px; left: 18px; }
.watch-case__screw--tr { top: 18px; right: 18px; }
.watch-case__screw--bl { bottom: 18px; left: 18px; }
.watch-case__screw--br { right: 18px; bottom: 18px; }

.analog-clock {
  position: relative;
  flex: 0 1 min(28vw, 360px);
  width: min(28vw, 360px);
  min-width: 180px;
  aspect-ratio: 1;
  border: clamp(3px, .5vw, 7px) solid currentColor;
  border-radius: 50%;
  box-shadow: 0 0 35px color-mix(in srgb, currentColor 23%, transparent), inset 0 0 30px color-mix(in srgb, currentColor 12%, transparent);
}

.analog-clock::before {
  position: absolute;
  inset: 6%;
  border: 1px solid currentColor;
  border-radius: inherit;
  content: "";
  opacity: .35;
}

.analog-clock__mark {
  position: absolute;
  font-family: "Courier New", monospace;
  font-size: clamp(.75rem, 2vw, 1.2rem);
  font-weight: 700;
}

.analog-clock__mark--12 { top: 7%; left: 50%; transform: translateX(-50%); }
.analog-clock__mark--3 { top: 50%; right: 8%; transform: translateY(-50%); }
.analog-clock__mark--6 { bottom: 7%; left: 50%; transform: translateX(-50%); }
.analog-clock__mark--9 { top: 50%; left: 8%; transform: translateY(-50%); }

.clock-hand {
  position: absolute;
  left: 50%;
  bottom: 50%;
  width: 3px;
  height: 30%;
  border-radius: 99px;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
  transform: translateX(-50%) rotate(0deg);
  transform-origin: 50% 100%;
}

.clock-hand--hour {
  width: 6px;
  height: 23%;
}

.clock-hand--second {
  width: 2px;
  height: 38%;
  opacity: .8;
}

.analog-clock__pin {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 18px;
  height: 18px;
  border: 4px solid #000;
  border-radius: 50%;
  background: currentColor;
  transform: translate(-50%, -50%);
}

.clock-readout {
  flex: 1 1 0;
  min-width: 0;
  text-align: center;
}

.digital-clock,
.single-timer-display,
.countdown-display,
.multi-card__time {
  font-family: "Courier New", monospace;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  white-space: nowrap;
}

.digital-clock {
  display: block;
  font-size: clamp(3rem, 7vw, 7rem);
  line-height: .9;
  letter-spacing: -.08em;
  text-shadow: 0 0 22px color-mix(in srgb, currentColor 42%, transparent);
}

.clock-date {
  margin: 24px 0 0;
  font-size: clamp(1rem, 2vw, 1.55rem);
  letter-spacing: .13em;
  opacity: .72;
}

.clock-screen[data-font="ming"] .digital-clock,
.clock-screen[data-font="ming"] .clock-date {
  font-family: "PMingLiU", "新細明體", serif;
  letter-spacing: 0;
}

.clock-screen[data-font="hei"] .digital-clock,
.clock-screen[data-font="hei"] .clock-date {
  font-family: "Microsoft JhengHei", "Noto Sans TC", sans-serif;
  letter-spacing: -.04em;
}

.clock-screen[data-font="typewriter"] .digital-clock,
.clock-screen[data-font="typewriter"] .clock-date {
  font-family: "Courier New", Consolas, monospace;
}

.clock-stage.no-analog .analog-clock {
  display: none;
}

.clock-stage.no-analog .digital-clock {
  font-size: clamp(5rem, 13vw, 13rem);
}

/* Pure CSS seven-segment display */

.seven-segment-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .025em;
  letter-spacing: 0 !important;
}

.seven-digit {
  position: relative;
  display: inline-block;
  flex: 0 0 .56em;
  width: .56em;
  height: 1em;
}

.seven-segment {
  position: absolute;
  display: block;
  border-radius: .02em;
  background: currentColor;
  filter: drop-shadow(0 0 .025em currentColor);
  opacity: .075;
  transition: opacity 45ms linear;
}

.seven-segment--a,
.seven-segment--d,
.seven-segment--g {
  left: .08em;
  width: .40em;
  height: .075em;
  clip-path: polygon(0 50%, 12% 0, 88% 0, 100% 50%, 88% 100%, 12% 100%);
}

.seven-segment--a { top: .025em; }
.seven-segment--g { top: .4625em; }
.seven-segment--d { bottom: .025em; }

.seven-segment--b,
.seven-segment--c,
.seven-segment--e,
.seven-segment--f {
  width: .075em;
  height: .39em;
  clip-path: polygon(50% 0, 100% 10%, 100% 90%, 50% 100%, 0 90%, 0 10%);
}

.seven-segment--b { top: .075em; right: .025em; }
.seven-segment--c { right: .025em; bottom: .075em; }
.seven-segment--e { bottom: .075em; left: .025em; }
.seven-segment--f { top: .075em; left: .025em; }

.seven-digit[data-value="0"] .seven-segment--a,
.seven-digit[data-value="0"] .seven-segment--b,
.seven-digit[data-value="0"] .seven-segment--c,
.seven-digit[data-value="0"] .seven-segment--d,
.seven-digit[data-value="0"] .seven-segment--e,
.seven-digit[data-value="0"] .seven-segment--f,
.seven-digit[data-value="1"] .seven-segment--b,
.seven-digit[data-value="1"] .seven-segment--c,
.seven-digit[data-value="2"] .seven-segment--a,
.seven-digit[data-value="2"] .seven-segment--b,
.seven-digit[data-value="2"] .seven-segment--d,
.seven-digit[data-value="2"] .seven-segment--e,
.seven-digit[data-value="2"] .seven-segment--g,
.seven-digit[data-value="3"] .seven-segment--a,
.seven-digit[data-value="3"] .seven-segment--b,
.seven-digit[data-value="3"] .seven-segment--c,
.seven-digit[data-value="3"] .seven-segment--d,
.seven-digit[data-value="3"] .seven-segment--g,
.seven-digit[data-value="4"] .seven-segment--b,
.seven-digit[data-value="4"] .seven-segment--c,
.seven-digit[data-value="4"] .seven-segment--f,
.seven-digit[data-value="4"] .seven-segment--g,
.seven-digit[data-value="5"] .seven-segment--a,
.seven-digit[data-value="5"] .seven-segment--c,
.seven-digit[data-value="5"] .seven-segment--d,
.seven-digit[data-value="5"] .seven-segment--f,
.seven-digit[data-value="5"] .seven-segment--g,
.seven-digit[data-value="6"] .seven-segment--a,
.seven-digit[data-value="6"] .seven-segment--c,
.seven-digit[data-value="6"] .seven-segment--d,
.seven-digit[data-value="6"] .seven-segment--e,
.seven-digit[data-value="6"] .seven-segment--f,
.seven-digit[data-value="6"] .seven-segment--g,
.seven-digit[data-value="7"] .seven-segment--a,
.seven-digit[data-value="7"] .seven-segment--b,
.seven-digit[data-value="7"] .seven-segment--c,
.seven-digit[data-value="8"] .seven-segment--a,
.seven-digit[data-value="8"] .seven-segment--b,
.seven-digit[data-value="8"] .seven-segment--c,
.seven-digit[data-value="8"] .seven-segment--d,
.seven-digit[data-value="8"] .seven-segment--e,
.seven-digit[data-value="8"] .seven-segment--f,
.seven-digit[data-value="8"] .seven-segment--g,
.seven-digit[data-value="9"] .seven-segment--a,
.seven-digit[data-value="9"] .seven-segment--b,
.seven-digit[data-value="9"] .seven-segment--c,
.seven-digit[data-value="9"] .seven-segment--d,
.seven-digit[data-value="9"] .seven-segment--f,
.seven-digit[data-value="9"] .seven-segment--g {
  opacity: 1;
}

.seven-separator {
  position: relative;
  display: inline-block;
  flex: 0 0 .18em;
  width: .18em;
  height: 1em;
}

.seven-separator i {
  position: absolute;
  left: 50%;
  width: .075em;
  height: .075em;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 .025em currentColor;
  transform: translateX(-50%);
}

.seven-separator--colon i:first-child { top: .31em; }
.seven-separator--colon i:last-child { bottom: .31em; }
.seven-separator--dot { flex-basis: .12em; width: .12em; }
.seven-separator--dot i { bottom: .035em; }

/* Single stopwatch */

.stopwatch-screen {
  --stopwatch-display-color: var(--phosphor-green);
  --stopwatch-background:
    linear-gradient(90deg, rgba(0, 0, 0, .035) 1px, transparent 1px),
    linear-gradient(var(--screen-gray), #c7c7c7);
  --stopwatch-ui-color: #050505;
  --stopwatch-kicker-color: #333;
  --stopwatch-display-shadow: 0 3px 0 rgba(255, 255, 255, .42);
  background:
    var(--stopwatch-background);
  background-size: 42px 100%;
  color: var(--stopwatch-ui-color);
}

.stopwatch-screen[data-background="black"] {
  --stopwatch-background:
    linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px),
    linear-gradient(#000, #090909);
  --stopwatch-ui-color: #f5f5f5;
  --stopwatch-kicker-color: #b8c2cf;
  --stopwatch-display-shadow: 0 0 12px color-mix(in srgb, var(--stopwatch-display-color) 35%, transparent);
}

.stopwatch-screen[data-background="navy"] {
  --stopwatch-background:
    linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px),
    linear-gradient(var(--screen-navy), #000d1a);
  --stopwatch-ui-color: #f5f5f5;
  --stopwatch-kicker-color: #b8cfe4;
  --stopwatch-display-shadow: 0 0 12px color-mix(in srgb, var(--stopwatch-display-color) 35%, transparent);
}

.stopwatch-screen[data-background="watch"] {
  --stopwatch-background:
    linear-gradient(90deg, rgba(0, 0, 0, .045) 1px, transparent 1px),
    linear-gradient(var(--screen-watch), #b7beac);
  --stopwatch-ui-color: #050505;
  --stopwatch-kicker-color: #343a32;
  --stopwatch-display-shadow: 0 2px 0 rgba(255, 255, 255, .35);
}

.stopwatch-screen[data-color="green"] { --stopwatch-display-color: var(--phosphor-green); }
.stopwatch-screen[data-color="white"] { --stopwatch-display-color: var(--phosphor-white); }
.stopwatch-screen[data-color="amber"] { --stopwatch-display-color: var(--phosphor-amber); }
.stopwatch-screen[data-color="red"] { --stopwatch-display-color: var(--phosphor-red); }
.stopwatch-screen[data-color="iron"] { --stopwatch-display-color: var(--iron-gray); }

.toolbar--light {
  border-color: rgba(0, 0, 0, .18);
  background: rgba(235, 235, 235, .94);
  color: #111;
}

.toolbar--light .toolbar-button {
  border-color: rgba(0, 0, 0, .2);
  background: rgba(0, 0, 0, .06);
  color: #111;
}

.single-timer-stage,
.countdown-stage {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 0;
  padding: 30px;
}

.single-timer-stage .timer-kicker {
  color: var(--stopwatch-kicker-color);
}

.single-timer-display {
  display: block;
  width: 100%;
  margin: 1vh 0 6vh;
  font-size: clamp(3.4rem, 13vw, 13rem);
  line-height: 1;
  letter-spacing: -.09em;
  color: var(--stopwatch-display-color);
  text-align: center;
  text-shadow: var(--stopwatch-display-shadow);
}

.stopwatch-screen[data-font="ming"] .single-timer-display {
  font-family: "PMingLiU", "新細明體", serif;
  letter-spacing: 0;
}

.stopwatch-screen[data-font="hei"] .single-timer-display {
  font-family: "Microsoft JhengHei", "Noto Sans TC", sans-serif;
  letter-spacing: -.04em;
}

.stopwatch-screen[data-font="typewriter"] .single-timer-display {
  font-family: "Courier New", Consolas, monospace;
}

.timer-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.control-button {
  min-width: 130px;
  min-height: 60px;
  padding: 10px 24px;
  border: 2px solid currentColor;
  border-radius: 7px;
  background: transparent;
  color: inherit;
  font-size: 1.05rem;
  font-weight: 800;
}

.control-button:hover:not(:disabled) {
  transform: translateY(-2px);
}

.control-button--primary {
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
}

.control-button--danger {
  border-color: var(--danger);
  color: var(--danger);
}

/* Multi stopwatch */

.multi-screen {
  background: #000;
}

.tool-toolbar--multi {
  flex: 0 0 auto;
  min-height: 60px;
  padding-block: 8px;
}

.multi-hint {
  color: #aeb9c8;
  font-size: .76rem;
  letter-spacing: .04em;
  white-space: nowrap;
}

.multi-grid {
  display: grid;
  flex: 1;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  grid-template-rows: repeat(4, minmax(0, 1fr));
  gap: clamp(5px, .75vw, 12px);
  min-height: 0;
  padding: clamp(8px, 1vw, 14px);
}

.multi-card {
  --timer-color: #fff;
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 0;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--timer-color) 32%, transparent);
  border-radius: 7px;
  background: color-mix(in srgb, var(--timer-color) 4%, #050505);
  color: var(--timer-color);
  text-align: left;
  contain: layout paint;
}

.multi-card:hover,
.multi-card.is-running {
  border-color: var(--timer-color);
}

.multi-card.is-running {
  background: color-mix(in srgb, var(--timer-color) 10%, #050505);
  box-shadow: inset 0 0 22px color-mix(in srgb, var(--timer-color) 13%, transparent);
}

.multi-card__header {
  position: absolute;
  top: 10px;
  left: 12px;
  display: flex;
  align-items: center;
  gap: 7px;
  font: 700 .66rem/1 "Courier New", monospace;
  letter-spacing: .12em;
  opacity: .75;
}

.multi-card__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 6px currentColor;
}

.multi-card__time {
  width: 100%;
  padding: 10px;
  font-size: clamp(1rem, 2.2vw, 2.55rem);
  letter-spacing: -.1em;
  text-align: center;
  text-shadow: 0 0 8px color-mix(in srgb, currentColor 35%, transparent);
}

.multi-screen .seven-segment {
  filter: none;
  transition: none;
}

.multi-screen .seven-separator i {
  box-shadow: none;
}

.multi-screen[data-font="ming"] .multi-card__time {
  font-family: "PMingLiU", "新細明體", serif;
  letter-spacing: 0;
}

.multi-screen[data-font="hei"] .multi-card__time {
  font-family: "Microsoft JhengHei", "Noto Sans TC", sans-serif;
  letter-spacing: -.04em;
}

.multi-screen[data-font="typewriter"] .multi-card__time {
  font-family: "Courier New", Consolas, monospace;
  letter-spacing: -.07em;
}

/* Countdown */

.countdown-screen {
  --countdown-display-color: var(--phosphor-amber);
  background:
    radial-gradient(circle at 50% 45%, #1b1200 0, #050300 42%, #000 72%);
  color: var(--phosphor-amber);
}

.countdown-screen[data-color="green"] { --countdown-display-color: var(--phosphor-green); }
.countdown-screen[data-color="white"] { --countdown-display-color: var(--phosphor-white); }
.countdown-screen[data-color="amber"] { --countdown-display-color: var(--phosphor-amber); }
.countdown-screen[data-color="red"] { --countdown-display-color: var(--phosphor-red); }
.countdown-screen[data-color="iron"] { --countdown-display-color: var(--iron-gray); }

.countdown-stage {
  padding-inline: 20px;
}

.hourglass {
  --hourglass-sand: var(--phosphor-blue);
  position: relative;
  width: clamp(110px, 12vw, 170px);
  height: clamp(145px, 16vw, 215px);
  margin: 0 0 clamp(12px, 2vh, 24px);
  filter: drop-shadow(0 0 12px color-mix(in srgb, var(--hourglass-sand) 45%, transparent));
  transition: width 180ms ease, height 180ms ease, margin 180ms ease, opacity 180ms ease;
}

.countdown-stage.no-hourglass .hourglass {
  width: 0;
  height: 0;
  margin: 0;
  opacity: 0;
  overflow: hidden;
}

.hourglass__cap {
  position: absolute;
  z-index: 3;
  left: 0;
  width: 100%;
  height: 10%;
  border: 2px solid #5c646d;
  border-radius: 4px;
  background: linear-gradient(#4b535c, #171b20);
  box-shadow: 0 2px 0 #080a0c;
}

.hourglass__cap--top { top: 0; }
.hourglass__cap--bottom { bottom: 0; transform: rotate(180deg); }

.hourglass__glass {
  position: absolute;
  inset: 8% 12%;
  overflow: hidden;
  border-right: 4px solid rgba(220, 235, 245, .46);
  border-left: 4px solid rgba(220, 235, 245, .46);
  background: linear-gradient(90deg, rgba(255, 255, 255, .05), rgba(255, 255, 255, .13), rgba(255, 255, 255, .03));
  clip-path: polygon(0 0, 100% 0, 62% 47%, 62% 53%, 100% 100%, 0 100%, 38% 53%, 38% 47%);
}

.hourglass__sand {
  position: absolute;
  left: 14%;
  width: 72%;
  background: var(--hourglass-sand);
}

.hourglass__sand--top {
  top: 8%;
  height: 40%;
  clip-path: polygon(0 0, 100% 0, 58% 100%, 42% 100%);
  transform-origin: 50% 100%;
}

.hourglass__sand--bottom {
  bottom: 7%;
  height: 7%;
  clip-path: polygon(42% 0, 58% 0, 100% 100%, 0 100%);
  transform-origin: 50% 100%;
}

.hourglass__stream {
  position: absolute;
  z-index: 2;
  top: 45%;
  left: calc(50% - 1px);
  width: 2px;
  height: 43%;
  background: var(--hourglass-sand);
  opacity: 0;
}

.hourglass.is-running .hourglass__sand--top {
  animation: hourglass-drain var(--hourglass-duration, 10s) linear forwards;
}

.hourglass.is-running .hourglass__sand--bottom {
  animation: hourglass-fill var(--hourglass-duration, 10s) linear forwards;
}

.hourglass.is-running .hourglass__stream {
  opacity: 1;
  animation: hourglass-stream 380ms linear infinite;
}

@keyframes hourglass-drain {
  to { transform: scaleY(.02); }
}

@keyframes hourglass-fill {
  to { height: 42%; }
}

@keyframes hourglass-stream {
  50% { opacity: .35; }
}

.countdown-stage .timer-kicker {
  color: #f5f5f5;
}

.countdown-display {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin: 0 0 4vh;
  color: var(--countdown-display-color);
  font-size: clamp(3.25rem, 12vw, 12rem);
  line-height: 1;
  letter-spacing: -.1em;
  padding: .12em .08em;
  border: clamp(6px, .8vw, 11px) solid #30363d;
  border-radius: clamp(12px, 1.8vw, 24px);
  background: #c9cfbf;
  box-shadow: inset 0 0 25px rgba(0, 0, 0, .2), 0 12px 35px rgba(0, 0, 0, .45);
  isolation: isolate;
  overflow: hidden;
  text-shadow: 0 0 24px rgba(255, 191, 0, .32);
  transition: box-shadow 220ms ease;
}

.countdown-display.is-warning {
  box-shadow:
    inset 0 0 55px rgba(0, 229, 255, .62),
    inset 0 0 12px rgba(255, 255, 255, .72),
    0 0 30px rgba(0, 229, 255, .5),
    0 12px 35px rgba(0, 0, 0, .45);
}

.countdown-display::before {
  position: absolute;
  z-index: 0;
  inset: 0;
  background:
    radial-gradient(circle at 50% 45%, rgba(240, 255, 255, .72), rgba(0, 229, 255, .13) 58%, transparent 82%);
  content: "";
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms ease;
}

.countdown-display.is-warning::before {
  opacity: 1;
}

.countdown-screen[data-font="ming"] .countdown-display {
  font-family: "PMingLiU", "新細明體", serif;
  letter-spacing: 0;
}

.countdown-screen[data-font="hei"] .countdown-display {
  font-family: "Microsoft JhengHei", "Noto Sans TC", sans-serif;
  letter-spacing: -.04em;
}

.countdown-screen[data-font="typewriter"] .countdown-display {
  font-family: "Courier New", Consolas, monospace;
}

.countdown-display.is-warning .countdown-segment,
.countdown-display.is-warning .countdown-separator {
  animation: countdown-warning-bounce 420ms cubic-bezier(.2, .75, .35, 1) infinite alternate;
}

.countdown-display.is-finished {
  animation: finished-flash 420ms ease-in-out 4 alternate;
}

@keyframes countdown-warning-bounce {
  from { transform: translateY(0) scale(1); }
  to { transform: translateY(-.08em) scale(1.035); }
}

@keyframes finished-flash {
  to { opacity: .22; }
}

.countdown-progress-line {
  position: absolute;
  z-index: 99;
  top: 4%;
  bottom: 4%;
  left: 0;
  width: clamp(3px, .35vw, 6px);
  border-radius: 99px;
  background: #ff2424;
  box-shadow:
    0 0 0 1px rgba(85, 0, 0, .48),
    0 0 10px #ff2424,
    0 0 24px rgba(255, 36, 36, .6);
  opacity: 0;
  pointer-events: none;
  transform: translate3d(0, 0, 0);
  transition: transform 55ms linear, opacity 160ms ease;
  will-change: transform;
}

.countdown-progress-line.is-visible {
  opacity: .94;
}

.countdown-segment {
  position: relative;
  z-index: 2;
  min-width: 1.72em;
  padding: .05em .03em;
  border: 2px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: inherit;
  font: inherit;
  letter-spacing: inherit;
  line-height: inherit;
}

.countdown-field {
  position: relative;
  z-index: 2;
  display: grid;
  flex: 0 1 auto;
  grid-template-rows: auto 1fr auto;
  justify-items: center;
  min-width: 0;
}

.countdown-step {
  width: 52%;
  min-width: 38px;
  min-height: 30px;
  padding: 0;
  border: 1px solid color-mix(in srgb, currentColor 38%, transparent);
  border-radius: 5px;
  background: color-mix(in srgb, currentColor 8%, transparent);
  color: var(--countdown-normal);
  font: 700 clamp(.72rem, 1.2vw, 1rem)/1 sans-serif;
  letter-spacing: 0;
}

.countdown-step:hover:not(:disabled) {
  background: color-mix(in srgb, currentColor 18%, transparent);
}

.countdown-step:active:not(:disabled) {
  transform: translateY(1px);
}

.countdown-separator {
  position: relative;
  z-index: 2;
  align-self: center;
  margin-top: 0;
}

.countdown-segment:hover,
.countdown-segment.is-selected {
  border-color: color-mix(in srgb, currentColor 48%, transparent);
  background: color-mix(in srgb, currentColor 7%, transparent);
}

.countdown-segment:disabled {
  opacity: 1;
}

.countdown-step:disabled {
  opacity: .2;
}

.countdown-dot {
  margin-left: -.1em;
}

.quick-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 4vh;
}

.quick-controls button {
  border-color: rgba(255, 255, 255, .34);
  background: rgba(255, 255, 255, .08);
  color: #f5f5f5;
}

.timer-controls--dark {
  color: #fff;
}

.control-button--amber {
  border-color: #f5f5f5;
  background: #f5f5f5;
  color: var(--countdown-normal);
}

@media (max-width: 900px) {
  .menu-content {
    padding-top: 34px;
  }

  .menu-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .menu-card {
    min-height: 160px;
  }

  .toolbar-settings {
    width: 100%;
  }

  .clock-stage {
    flex-direction: column;
    gap: 25px;
  }

  .clock-watch-case {
    flex-direction: column;
    gap: 25px;
    min-height: auto;
  }

  .analog-clock {
    flex-basis: min(42vh, 330px);
    width: min(42vh, 330px);
  }

  .multi-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    grid-template-rows: repeat(5, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .kosmos-home-header {
    width: min(1180px, calc(100% - 2rem));
    padding-top: 1.25rem;
  }

  .kosmos-brand-mark {
    gap: .55rem;
    font-size: .68rem;
  }

  .kosmos-brand-tagline {
    margin-left: 1.15rem;
    font-size: .58rem;
  }

  .menu-content {
    width: min(100% - 24px, 500px);
    padding-block: 25px;
  }

  .menu-content h1 {
    font-size: clamp(3.2rem, 17vw, 5rem);
  }

  .menu-subtitle {
    margin-block: 18px 24px;
  }

  .menu-grid {
    grid-template-columns: 1fr;
    gap: 9px;
  }

  .menu-card {
    min-height: 150px;
    padding: 15px;
  }

  .menu-card__icon {
    font-size: 1.8rem;
  }

  .menu-card__title {
    margin-top: 10px;
    font-size: 1.05rem;
  }

  .menu-card__hint,
  .menu-footer {
    display: none;
  }

  .tool-toolbar {
    min-height: 58px;
  }

  .toolbar-settings {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .compact-field {
    justify-content: space-between;
  }

  .compact-field select {
    width: 70%;
  }

  .clock-stage {
    padding: 20px 12px;
  }

  .clock-watch-case {
    width: 96vw;
    padding: 50px 22px 36px;
    border-width: 9px;
    border-radius: 22px;
  }

  .analog-clock {
    flex-basis: min(58vw, 250px);
    width: min(58vw, 250px);
  }

  .digital-clock {
    font-size: clamp(3.3rem, 17vw, 6rem);
  }

  .clock-stage.no-analog .digital-clock {
    font-size: clamp(4rem, 20vw, 7rem);
  }

  .single-timer-stage,
  .countdown-stage {
    padding-inline: 10px;
  }

  .single-timer-display {
    font-size: clamp(2.55rem, 14.2vw, 5rem);
  }

  .control-button {
    min-width: 94px;
    min-height: 54px;
    padding-inline: 17px;
  }

  .tool-toolbar--multi .toolbar-title {
    display: none;
  }

  .tool-toolbar--multi .multi-hint {
    flex: 1 1 100%;
    padding-left: 2px;
    font-size: .68rem;
    white-space: normal;
  }

  .tool-toolbar--multi .toolbar-group {
    flex-wrap: wrap;
  }

  .tool-toolbar--multi .toolbar-group:first-child {
    flex-wrap: wrap;
  }

  .tool-toolbar--multi .toolbar-group:last-child {
    flex: 1 1 100%;
  }

  .tool-toolbar--multi .compact-field {
    flex: 1 1 110px;
  }

  .tool-toolbar--multi .toolbar-button {
    min-height: 40px;
    padding-inline: 8px;
    font-size: .74rem;
  }

  .multi-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: none;
    overflow-y: auto;
  }

  .multi-card {
    min-height: 90px;
  }

  .multi-card__time {
    font-size: clamp(1.3rem, 7vw, 2rem);
  }

  .countdown-screen .tool-toolbar > .toolbar-group:last-child {
    width: 100%;
    justify-content: space-between;
  }

  .countdown-display {
    font-size: clamp(2rem, 10.6vw, 4rem);
  }

  .countdown-segment {
    border-radius: 4px;
  }

  .countdown-step {
    min-width: 30px;
    min-height: 28px;
  }
}

@media (max-height: 640px) and (orientation: landscape) {
  .menu-content h1 {
    font-size: 4rem;
  }

  .menu-subtitle {
    margin-block: 12px 18px;
  }

  .menu-card {
    min-height: 135px;
  }

  .menu-footer {
    margin-top: 12px;
  }

  .clock-stage {
    flex-direction: row;
    padding: 18px;
  }

  .clock-watch-case {
    flex-direction: row;
    min-height: auto;
    padding-block: 45px 30px;
  }

  .analog-clock {
    flex-basis: min(45vh, 270px);
    width: min(45vh, 270px);
  }

  .digital-clock {
    font-size: clamp(4rem, 10vw, 8rem);
  }

  .single-timer-display,
  .countdown-display {
    margin-block: 0 4vh;
  }

  .quick-controls {
    margin-bottom: 3vh;
  }
}

@media (max-height: 800px) {
  .countdown-stage {
    padding-block: 12px;
  }

  .countdown-stage .timer-kicker {
    margin-bottom: 6px;
  }

  .hourglass {
    width: 105px;
    height: 140px;
    margin-bottom: 6px;
  }

  .countdown-display {
    margin-bottom: 2vh;
    padding: .06em .04em;
    border-width: 7px;
    font-size: clamp(3rem, 9.5vw, 7.5rem);
  }

  .countdown-step {
    min-height: 24px;
  }

  .quick-controls {
    margin-bottom: 2vh;
  }

  .countdown-stage .control-button {
    min-height: 50px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }

  .countdown-display.is-warning .countdown-segment,
  .countdown-display.is-warning .countdown-separator {
    animation: none;
  }
}