:root {
  color-scheme: dark;
  --bg: #000000;
  --fg: #eeeeee;
  --muted: #a9a9a9;
  --ring-bg: #2f2f2f;
  --overlay-bg: rgba(0, 0, 0, 0.44);
  --overlay-glow: rgba(255,255,255,0.035);
  --brand-gradient: linear-gradient(180deg, #f0f0f0 0%, #9f9f9f 62%, #d8d8d8 100%);
  --temporal: rgba(238, 238, 238, 0.70);
  --temporal-shadow: rgba(255, 255, 255, 0.055);
  --divider: rgba(255,255,255,0.055);
  --canvas-bg-base: 0;
  --canvas-bg-day-scale: 255;
  --canvas-bg-edge: #000000;
  --canvas-tick: rgba(238,238,238,0.46);
  --canvas-seasonal-active: rgba(238,238,238,0.46);
  --canvas-seasonal-active-alpha: 0.42;
  --canvas-seasonal-active-width: 1;
  --canvas-solar-cool: #aeb4c2;
  --canvas-solar-warm: #d0c4a8;
  --canvas-lunar-hue-start: 45;
  --canvas-lunar-hue-end: 200;
  --canvas-lunar-saturation: 0.45;
  --canvas-lunar-lightness: 0.70;
  --canvas-grain-rgb: 8;
  --canvas-grain-alpha: 32;
  --canvas-grain-opacity: 0.06;
  --canvas-fine-alpha: 1;
  --canvas-ring-line-scale: 1;
  --canvas-pulse-color: solar-active;
  --canvas-pulse-alpha: 0.85;
  --canvas-pulse-width: 0.6;
  --canvas-guide-line-alpha: 0.20;
  --canvas-guide-line-width: 0.6;
  --canvas-shadow: rgba(255,255,255,0.08);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
html, body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

html,
body {
  width: 100%;
  overflow: hidden;
}

button { font: inherit; }

#app {
  height: 100dvh;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: max(12px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right))
           max(12px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
  position: relative;
  touch-action: manipulation;
  overflow: hidden;
}

#clock {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}
.first-hint {
  position: fixed;
  left: 50%;
  top: 61%;
  top: 61dvh;
  right: auto;
  bottom: auto;
  transform: translate(-50%, -50%);
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
  opacity: 0;
  pointer-events: none;
  animation: firstHint 6s ease 900ms forwards;
  z-index: 4;
}
body.hint-seen .first-hint { display: none; }
@keyframes firstHint {
  0% { opacity: 0; transform: translate(-50%, calc(-50% + 4px)); }
  18% { opacity: 0.58; transform: translate(-50%, -50%); }
  72% { opacity: 0.58; transform: translate(-50%, -50%); }
  100% { opacity: 0; transform: translate(-50%, calc(-50% + 4px)); }
}




#overlay {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, var(--overlay-glow), transparent 42%), var(--overlay-bg);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: max(18px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right))
           max(18px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));
  opacity: 0;
  pointer-events: none;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  cursor: pointer;
  backdrop-filter: blur(9px);
  -webkit-backdrop-filter: blur(9px);
  transition: opacity 420ms ease;
  z-index: 3;
}
#overlay[aria-hidden="false"] {
  opacity: 1;
  pointer-events: auto;
}

.panel {
  width: min(720px, 94vw);
  max-height: none;
  margin-block: auto;
  overflow: visible;
  color: var(--fg);
  background: transparent;
  border: 0;
  box-shadow: none;
  transform: translate3d(0, 8px, 0) scale(0.985);
  transition: transform 520ms ease;
  cursor: pointer;
}
#overlay[aria-hidden="false"] .panel {
  transform: translate3d(0, 0, 0) scale(1);
  will-change: transform;
}

.panel header {
  display: block;
  padding: 0 22px;
}
.brand {
  margin: 0;
  font-weight: 560;
  letter-spacing: 0.24em;
  font-size: clamp(23px, 4vmin, 38px);
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.version-mark {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.14em;
  opacity: 0.44;
}

.temporal-phrase {
  margin: 18px 0 12px 0;
  font-size: clamp(34px, 8vmin, 72px);
  line-height: 1.02;
  font-weight: 180;
  letter-spacing: 0.05em;
  color: var(--temporal);
  text-shadow: 0 0 28px var(--temporal-shadow);
}
.about-line {
  margin: 0 0 28px 0;
  max-width: 620px;
  color: var(--muted);
  opacity: 0.78;
  font-size: clamp(14px, 2vmin, 16px);
  line-height: 1.5;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px 34px;
}
.reading {
  min-height: 104px;
  padding: 8px 0 12px 0;
  border: 0;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.reading h2 {
  margin: 0 0 9px 0;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: lowercase;
  color: color-mix(in srgb, var(--fg), transparent 32%);
  font-weight: 560;
}
.reading p {
  margin: 0;
  color: var(--fg);
  line-height: 1.42;
  font-size: clamp(15px, 2vmin, 17px);
}
.reading small {
  display: block;
  margin-top: 9px;
  color: color-mix(in srgb, var(--muted), transparent 8%);
  line-height: 1.45;
}

.panel footer {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--divider);
}
.panel .note {
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
  opacity: 0.78;
}

@media (max-width: 760px), (display-mode: standalone) {  
#overlay {
    padding: max(16px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right))
             max(16px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
  }
  .panel { width: min(420px, 92vw); }
  .panel header { padding: 0 4px; }
  .brand { font-size: clamp(22px, 7vw, 32px); }
  .temporal-phrase {
    margin: 16px 0 10px 0;
    font-size: clamp(32px, 13vw, 58px);
  }
  .about-line { margin-bottom: 20px; }
  .grid {
    grid-template-columns: 1fr;
    gap: 9px;
  }
  .reading {
    min-height: auto;
    padding: 11px 12px 10px 12px;
  }
  .reading h2 { margin-bottom: 6px; }
  .reading small { margin-top: 6px; }
  .panel footer { margin-top: 10px; padding-top: 10px; }
  .panel .note { font-size: 11px; }
}

@media (max-height: 700px) and (max-width: 760px), 
    (display-mode: standalone) and (max-height: 760px) {  .temporal-phrase {
    margin: 10px 0 8px 0;
    font-size: clamp(30px, 12vw, 48px);
  }
  .about-line { display: none; }
  .grid { gap: 7px; }
  .reading { padding: 9px 11px; }
  .reading small { display: none; }
  .panel footer { margin-top: 7px; padding-top: 7px; }
  .panel .note { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  #overlay, .panel { transition: none; }
  .first-hint { animation: none; opacity: 0.5; }
}

body.app-inactive *,
body.app-inactive *::before,
body.app-inactive *::after {
  animation-play-state: paused !important;
  transition: none !important;
}