:root {
  --bg-base: #f9f4f7;
  --bg-start: #fff8f0;
  --bg-end: #eef5ff;
  --surface: rgb(255 255 255 / 80%);
  --surface-strong: rgb(255 255 255 / 95%);
  --line: #e8dbe3;
  --text: #3c3446;
  --muted: #796a81;
  --accent: #5f82ce;
  --accent-strong: #486ab9;
  --clock: #2f2738;
  --glow: rgb(95 130 206 / 28%);
  --shadow: 0 20px 46px rgb(114 93 134 / 20%);
}

#page-root[data-theme="dark"] {
  --bg-base: #1e1e2e;
  --bg-start: #1a1b30;
  --bg-end: #11111b;
  --surface: rgb(49 50 68 / 82%);
  --surface-strong: rgb(69 71 90 / 95%);
  --line: #45475a;
  --text: #cdd6f4;
  --muted: #a6adc8;
  --accent: #89b4fa;
  --accent-strong: #b4befe;
  --clock: #f5e0dc;
  --glow: rgb(180 190 254 / 30%);
  --shadow: 0 22px 54px rgb(0 0 0 / 40%);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family: "Manrope", "Avenir Next", "Segoe UI", sans-serif;
}

#page-root {
  min-height: 100vh;
  padding: 1rem;
  color: var(--text);
  background-color: var(--bg-base);
  background-image:
    radial-gradient(circle at 14% 16%, rgb(255 204 214 / 42%) 0%, transparent 44%),
    radial-gradient(circle at 82% 10%, rgb(169 204 255 / 38%) 0%, transparent 48%),
    linear-gradient(180deg, var(--bg-start) 0%, var(--bg-end) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-x: hidden;
}

a {
  color: var(--accent-strong);
  font-weight: 600;
  text-decoration-thickness: 0.1em;
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--accent);
}

.ambient {
  position: fixed;
  pointer-events: none;
  width: min(34vw, 15rem);
  aspect-ratio: 1 / 1;
  border-radius: 999px;
  filter: blur(26px);
  opacity: 0.32;
}

.ambient-left {
  left: -5rem;
  top: 12%;
  background: #f1a6c5;
}

.ambient-right {
  right: -6rem;
  bottom: 9%;
  background: #8bc7ff;
}

#page-root[data-theme="dark"] .ambient-left {
  background: #cba6f7;
}

#page-root[data-theme="dark"] .ambient-right {
  background: #89b4fa;
}

.shell {
  position: relative;
  z-index: 1;
  width: min(100%, 46rem);
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  background: linear-gradient(180deg, var(--surface-strong) 0%, var(--surface) 100%);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}

.header {
  margin-bottom: 1rem;
}

.label {
  margin: 0;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  font-size: 0.77rem;
}

h1 {
  margin: 0.5rem 0 0;
  font-size: clamp(1.55rem, 6vw, 2.25rem);
  line-height: 1.15;
  font-weight: 700;
}

.subtitle {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.96rem;
}

.toolbar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 0.85rem;
}

.theme-form {
  margin: 0;
}

.theme-toggle {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgb(255 255 255 / 54%);
  color: var(--text);
  font: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.48rem 0.9rem;
  cursor: pointer;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

#page-root[data-theme="dark"] .theme-toggle {
  background: rgb(24 24 37 / 72%);
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  transform: translateY(-1px);
  border-color: var(--accent);
  background: rgb(255 255 255 / 72%);
}

#page-root[data-theme="dark"] .theme-toggle:hover,
#page-root[data-theme="dark"] .theme-toggle:focus-visible {
  background: rgb(17 17 27 / 82%);
}

.clock-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 11rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: linear-gradient(145deg, var(--surface-strong) 0%, var(--surface) 100%);
}

#clock-time {
  font-family: "IBM Plex Mono", "Cascadia Mono", "SFMono-Regular", monospace;
  font-size: clamp(2.35rem, 17vw, 6rem);
  color: var(--clock);
  text-shadow: 0 0 26px var(--glow);
  letter-spacing: 0.07em;
  font-variant-numeric: tabular-nums;
}

.footer {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer p {
  margin: 0;
}

@media (min-width: 700px) {
  #page-root {
    padding: 2rem;
  }

  .shell {
    padding: 1.9rem;
    border-radius: 1.4rem;
  }

  .header {
    margin-bottom: 1.35rem;
  }

  .toolbar {
    margin-bottom: 1rem;
  }

  .clock-panel {
    min-height: 13rem;
  }
}

@media (max-width: 420px) {
  .theme-toggle {
    width: 100%;
  }

  .toolbar {
    justify-content: stretch;
  }

  .theme-form {
    width: 100%;
  }
}