:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  --background: #eef3f7;
  --surface: #ffffff;
  --text: #10283e;
  --muted: #536a7c;
  --accent: #176b87;
  --accent-dark: #0f536a;
  --focus: #9c3cff;
  --success: #257250;
  --error: #b4232a;
  --shadow: 0 18px 45px rgb(17 44 68 / 12%);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--background);
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  padding:
    max(1rem, env(safe-area-inset-top))
    max(1rem, env(safe-area-inset-right))
    max(1rem, env(safe-area-inset-bottom))
    max(1rem, env(safe-area-inset-left));
  color: var(--text);
  background:
    radial-gradient(circle at top, rgb(255 255 255 / 88%), transparent 48%),
    var(--background);
}

button,
input {
  font: inherit;
}

button {
  min-height: 3.5rem;
  border-radius: 0.9rem;
  cursor: pointer;
  touch-action: manipulation;
}

button:disabled,
input:disabled {
  cursor: not-allowed;
  opacity: 0.52;
}

button:focus-visible,
input:focus-visible {
  outline: 4px solid var(--focus);
  outline-offset: 3px;
}

.draw-shell {
  width: min(100%, 86rem);
  min-height: calc(100vh - 2rem);
  min-height: calc(100dvh - 2rem);
  margin: 0 auto;
  display: grid;
  grid-template-rows: auto minmax(14rem, 1fr) auto auto;
  gap: clamp(0.9rem, 2.4vh, 1.5rem);
}

.draw-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(12rem, 18rem);
  align-items: end;
  gap: clamp(1rem, 4vw, 3rem);
}

.eyebrow,
h1,
p {
  margin: 0;
}

.eyebrow {
  margin-bottom: 0.35rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(2rem, 5vw, 4.4rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.intro {
  max-width: 48rem;
  margin-top: 0.65rem;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.45;
}

.count-field {
  display: grid;
  gap: 0.35rem;
}

label {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
}

input {
  min-height: 3.5rem;
  width: 100%;
  border: 2px solid rgb(16 40 62 / 24%);
  border-radius: 0.8rem;
  padding: 0.65rem 0.85rem;
  color: var(--text);
  background: var(--surface);
  font-size: 1.15rem;
  font-weight: 700;
}

input[aria-invalid="true"] {
  border-color: var(--error);
}

.input-message,
.offline-message {
  min-height: 1.3rem;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.4;
}

.result-panel {
  min-height: 14rem;
  display: grid;
  place-items: center;
  align-content: center;
  gap: clamp(0.55rem, 1.6vh, 1rem);
  overflow: hidden;
  border: 1px solid rgb(23 50 77 / 10%);
  border-radius: clamp(1.25rem, 3vw, 2.2rem);
  padding: clamp(1rem, 3vw, 2rem);
  background: rgb(255 255 255 / 82%);
  box-shadow: var(--shadow);
}

.result-number {
  display: block;
  min-width: 2ch;
  color: var(--text);
  font-size: clamp(8rem, 31vw, 23rem);
  font-weight: 880;
  line-height: 0.78;
  letter-spacing: -0.075em;
  font-variant-numeric: tabular-nums;
  text-align: center;
}

.result-panel.is-drawing .result-number {
  animation: number-pulse 180ms ease-in-out infinite alternate;
}

.progress {
  color: var(--muted);
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  font-weight: 750;
}

.completion-message {
  min-height: 1.4em;
  color: var(--success);
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  font-weight: 800;
  text-align: center;
}

.controls {
  display: grid;
  grid-template-columns: minmax(14rem, 1.2fr) minmax(20rem, 1fr);
  gap: 0.8rem;
}

.secondary-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(9rem, 1fr));
  gap: 0.8rem;
}

.button {
  border: 2px solid transparent;
  padding: 0.85rem 1rem;
  font-weight: 780;
}

.button-primary {
  color: #ffffff;
  background: var(--accent);
  font-size: clamp(1.15rem, 2.5vw, 1.5rem);
}

.button-primary:hover:not(:disabled) {
  background: var(--accent-dark);
}

.button-secondary {
  border-color: rgb(16 40 62 / 16%);
  color: var(--text);
  background: var(--surface);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

@keyframes number-pulse {
  from {
    opacity: 0.48;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1.02);
  }
}

@media (orientation: landscape) and (min-width: 800px) and (max-height: 720px) {
  .draw-shell {
    grid-template-columns: minmax(19rem, 0.8fr) minmax(24rem, 1.4fr);
    grid-template-rows: minmax(0, 1fr) auto auto;
  }

  .draw-header {
    grid-column: 1;
    grid-row: 1;
    grid-template-columns: 1fr;
    align-content: center;
  }

  .result-panel {
    grid-column: 2;
    grid-row: 1 / 3;
  }

  .controls {
    grid-column: 1;
    grid-row: 2;
    grid-template-columns: 1fr;
  }

  footer {
    grid-column: 1 / -1;
    grid-row: 3;
  }
}

@media (max-width: 760px) {
  .draw-shell {
    grid-template-rows: auto minmax(13rem, 1fr) auto auto;
  }

  .draw-header,
  .controls {
    grid-template-columns: 1fr;
  }

  .count-field {
    max-width: none;
  }

  .secondary-controls {
    grid-template-columns: 1fr;
  }

  .result-number {
    font-size: clamp(7.5rem, 42vw, 14rem);
  }

  footer {
    display: grid;
  }
}

@media (max-width: 390px) {
  body {
    padding:
      max(0.75rem, env(safe-area-inset-top))
      max(0.75rem, env(safe-area-inset-right))
      max(0.75rem, env(safe-area-inset-bottom))
      max(0.75rem, env(safe-area-inset-left));
  }

  .draw-shell {
    min-height: calc(100dvh - 1.5rem);
  }

  h1 {
    font-size: 2rem;
  }

  .result-panel {
    min-height: 12rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .result-panel.is-drawing .result-number {
    animation: none;
  }
}

.ausberlinos-backlink { margin: 0 0 18px; font: 500 14px/1.5 system-ui, sans-serif; }
.ausberlinos-backlink a { display: inline-flex; align-items: center; min-height: 44px; color: inherit; text-underline-offset: 4px; }
.ausberlinos-backlink a:focus-visible { outline: 2px solid currentColor; outline-offset: 4px; }