:root {
  color-scheme: light dark;
  --bg: #f6f3ec;
  --card: #fffdf8;
  --ink: #1f2421;
  --muted: #5d655f;
  --line: #d8d2c4;
  --accent: #1f5c4a;
  --accent-ink: #ffffff;
  --warn-bg: #fbf0d9;
  --warn-ink: #5a3d00;
  --font: system-ui, -apple-system, "Segoe UI", "Noto Sans Arabic", "Geeza Pro", Tahoma, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161a18;
    --card: #1f2522;
    --ink: #ecebe5;
    --muted: #a3aaa4;
    --line: #38403b;
    --accent: #7fd1b5;
    --accent-ink: #10201a;
    --warn-bg: #3a2f14;
    --warn-ink: #f3dfae;
  }
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.7;
}

.page {
  max-width: 34rem;
  margin-inline: auto;
  padding: 1.25rem 1rem 2rem;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-block-end: 1rem;
}

h1 {
  margin: 0;
  font-size: 1.5rem;
  line-height: 1.3;
}

.intro { margin-block: 0 1.25rem; color: var(--muted); }

button, input { font: inherit; }

button {
  min-height: 2.75rem;
  padding: 0.4rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--card);
  color: var(--ink);
  cursor: pointer;
}

button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.lang-toggle { flex: none; }

label { display: block; margin-block-end: 0.35rem; font-weight: 600; }

.field { display: flex; gap: 0.5rem; }

input[type="text"] {
  flex: 1;
  min-width: 0;
  min-height: 2.75rem;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: var(--card);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 1.125rem;
  text-align: left;
}

.hint { margin-block: 0.35rem 0; color: var(--muted); font-size: 0.9rem; }

.outcome {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  min-height: 6.5rem;
  margin-block-start: 1.25rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--card);
}

#status { flex: 1; min-width: 12rem; }

.result { margin: 0; }

.result-label { display: block; color: var(--muted); font-size: 0.9rem; }

.cutter {
  display: inline-block;
  max-inline-size: 100%;
  overflow-wrap: anywhere;
  font-family: var(--mono);
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.04em;
  color: var(--accent);
  user-select: all;
  -webkit-user-select: all;
}

.message { margin: 0; }

.message[data-kind="problem"] {
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  background: var(--warn-bg);
  color: var(--warn-ink);
}

.message[data-kind="note"] { margin-block-start: 0.25rem; color: var(--muted); font-size: 0.95rem; }

.foot {
  margin-block-start: 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.foot a { color: var(--accent); }

@media (max-width: 22rem) {
  .field { flex-direction: column; }
}