/* Heebo (SIL OFL 1.1, see fonts/OFL.txt): the built-in fallback font and the page's own font, self-hosted */
@font-face {
  font-family: "Heebo";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/heebo-hebrew-400-normal.woff2) format("woff2");
  unicode-range: U+0307-0308, U+0590-05FF, U+200C-2010, U+20AA, U+25CC, U+FB1D-FB4F;
}
@font-face {
  font-family: "Heebo";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(fonts/heebo-latin-400-normal.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Heebo";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(fonts/heebo-hebrew-700-normal.woff2) format("woff2");
  unicode-range: U+0307-0308, U+0590-05FF, U+200C-2010, U+20AA, U+25CC, U+FB1D-FB4F;
}
@font-face {
  font-family: "Heebo";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(fonts/heebo-latin-700-normal.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ---------------------------------------------------------------- tokens: paper and ink */

:root {
  --bg: #f4f1ea;          /* newsprint */
  --surface: #fffdf8;     /* cards */
  --sunken: #ebe6dc;      /* segmented track, preview stage */
  --ink: #1d1b18;
  --ink-2: #5b5750;
  --ink-3: #8a857c;
  --line: #ddd7cb;
  --line-strong: #c4bdaf;
  --accent: #1d1b18;      /* primary button and selected segment */
  --on-accent: #fffdf8;
  --focus: #2f5bd3;
  --error: #b42318;
  --error-bg: #fdecea;
  --warn: #8a4b08;
  --warn-bg: #fdf3e1;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(40, 30, 10, 0.06), 0 4px 16px rgba(40, 30, 10, 0.06);
  --paper-shadow: 0 1px 3px rgba(40, 30, 10, 0.12), 0 12px 32px rgba(40, 30, 10, 0.12);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #161513;
    --surface: #201f1c;
    --sunken: #2a2825;
    --ink: #f2efe8;
    --ink-2: #b9b4aa;
    --ink-3: #8c877e;
    --line: #34322e;
    --line-strong: #4a4741;
    --accent: #f2efe8;
    --on-accent: #161513;
    --focus: #8aa8ff;
    --error: #ff8a7a;
    --error-bg: #3a1d19;
    --warn: #f2c27b;
    --warn-bg: #352812;
    --shadow: none;
    --paper-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #161513;
  --surface: #201f1c;
  --sunken: #2a2825;
  --ink: #f2efe8;
  --ink-2: #b9b4aa;
  --ink-3: #8c877e;
  --line: #34322e;
  --line-strong: #4a4741;
  --accent: #f2efe8;
  --on-accent: #161513;
  --focus: #8aa8ff;
  --error: #ff8a7a;
  --error-bg: #3a1d19;
  --warn: #f2c27b;
  --warn-bg: #352812;
  --shadow: none;
  --paper-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
  color-scheme: dark;
}

/* ---------------------------------------------------------------- base */

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

body {
  margin: 0;
  padding: 0 16px;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 Heebo, Arial, "Segoe UI", Roboto, sans-serif;
}

.top, .layout { max-width: 1240px; margin-inline: auto; }

button, input, select, textarea { font: inherit; color: inherit; }

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

svg { fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }

.muted { color: var(--ink-3); font-size: 0.85rem; }

/* ---------------------------------------------------------------- header */

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0 18px;
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.logo { width: 34px; height: 34px; flex: none; stroke-width: 2.2; }
h1 { margin: 0; font-size: 1.35rem; line-height: 1.2; letter-spacing: -0.01em; }

.pill {
  flex: none;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.9rem;
  cursor: pointer;
}
.pill:hover { border-color: var(--ink-2); }

/* ---------------------------------------------------------------- layout */

.layout {
  display: grid;
  gap: 16px;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas: "input" "preview" "options";
  padding-bottom: 24px;
}
.input-card { grid-area: input; }
.preview { grid-area: preview; }
.options-card { grid-area: options; }

@media (min-width: 900px) {
  .layout {
    grid-template-columns: 380px minmax(0, 1fr);
    grid-template-areas: "input preview" "options preview";
    grid-template-rows: auto 1fr;
    align-items: start;
    gap: 20px 24px;
  }
  .preview { position: sticky; top: 16px; }
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}

.card-title {
  display: block;
  margin: 0;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-2);
}

/* ---------------------------------------------------------------- puzzle input */

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.examples { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-3); font-size: 0.85rem; }

.chip {
  border: 1px solid var(--line-strong);
  background: transparent;
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 0.85rem;
  cursor: pointer;
}
.chip:hover { background: var(--sunken); }

textarea {
  display: block;
  width: 100%;
  min-height: 8.5em;
  resize: vertical;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface);
  font-size: 1rem;
  line-height: 1.6;
}
textarea:focus { border-color: var(--ink-2); }


#status {
  margin: 10px 0 0;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.9rem;
}
#status.info { padding: 0; color: var(--ink-2); }
#status.warn { background: var(--warn-bg); color: var(--warn); }
#status.error { background: var(--error-bg); color: var(--error); font-weight: 700; }

/* ---------------------------------------------------------------- options */

fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
fieldset + fieldset, fieldset + .more { margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); }
/* keep the legend inside the box, not on the divider line */
legend { float: inline-start; width: 100%; padding: 0; margin-bottom: 10px; }
legend + * { clear: both; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.field { display: flex; flex-direction: column; gap: 5px; margin-bottom: 12px; min-width: 0; }
.field:last-child { margin-bottom: 0; }
.label { font-size: 0.9rem; font-weight: 700; }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.pair .field { margin-bottom: 12px; }

input[type="text"], input[type="number"], select {
  width: 100%;
  height: 38px;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface);
}
input:focus, select:focus { border-color: var(--ink-2); }

/* segmented control built from radio buttons */
.seg {
  display: flex;
  padding: 3px;
  gap: 3px;
  background: var(--sunken);
  border-radius: 9px;
}
.seg label { flex: 1; position: relative; }
.seg input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.seg label > span {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 32px;
  padding: 0 8px;
  border-radius: 7px;
  font-size: 0.9rem;
  color: var(--ink-2);
  white-space: nowrap;
  transition: background-color 0.12s, color 0.12s;
}
.seg input:checked + span { background: var(--accent); color: var(--on-accent); font-weight: 700; }
.seg label:hover input:not(:checked) + span { color: var(--ink); }
.seg input:focus-visible + span { outline: 2px solid var(--focus); outline-offset: 1px; }
.page-icon { height: 14px; width: auto; }

.check { display: flex; gap: 8px; align-items: center; margin-top: 4px; cursor: pointer; }
.check input { width: 18px; height: 18px; margin: 0; accent-color: var(--accent); }
.more .check { margin: 0 0 14px; }

.note {
  margin: 0 0 12px;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--warn-bg);
  color: var(--warn);
  font-size: 0.85rem;
}

/* the Advanced dropdown */
.more summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  list-style: none;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.more summary::-webkit-details-marker { display: none; }
.more summary::after {
  content: "";
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor; /* physical: the chevron points down in both directions */
  border-bottom: 2px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform 0.15s;
}
.more[open] summary::after { transform: translateY(2px) rotate(-135deg); }
.more[open] summary { margin-bottom: 12px; }

/* ---------------------------------------------------------------- preview */

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.toolbar .card-title { display: inline; margin-inline-end: 8px; }

.buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 38px;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: var(--surface);
  font-weight: 700;
  font-size: 0.9rem;
  white-space: nowrap;
  cursor: pointer;
}
.btn:hover:not(:disabled) { border-color: var(--ink-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn.primary:hover:not(:disabled) { opacity: 0.88; }
.btn:disabled { opacity: 0.4; cursor: default; }
.btn svg { width: 16px; height: 16px; stroke-width: 2; }

.stage {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 24px;
  background: var(--sunken);
  border-radius: var(--radius);
  min-height: 320px;
}

#sheet {
  display: block;
  width: 100%;
  height: auto;
  background: #fff;
  border-radius: 2px;
  box-shadow: var(--paper-shadow);
  transition: opacity 0.15s;
}
#sheet.stale { opacity: 0.35; }

@media (min-width: 900px) {
  /* show the whole page at once */
  .stage { min-height: calc(100vh - 120px); }
  #sheet { width: auto; max-width: 100%; max-height: calc(100vh - 170px); }
}

.empty {
  align-self: center;
  max-width: 340px;
  text-align: center;
  color: var(--ink-2);
}
.empty svg { width: 56px; height: 70px; color: var(--ink-3); stroke-width: 1.4; }
.empty p { margin: 6px 0; }
.empty-title { font-size: 1.1rem; font-weight: 700; color: var(--ink); }
.empty .chip { margin: 4px 2px 0; }

@media (max-width: 520px) {
  .top { padding: 16px 0 12px; }
  .stage { padding: 12px; min-height: 220px; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .buttons .btn { flex: 1; justify-content: center; }
  .buttons .btn.primary { flex: 2; }
  .logo { width: 28px; height: 28px; }
  .card { padding: 14px; }
}