/* AI to Anki — index-card study desk. Two columns on desktop (paste | cards), stacked on phones. */
:root {
  --bg: #F4F6FA;
  --surface: #FFFFFF;
  --ink: #121826;
  --muted: #5B6476;
  --line: #DCE1EA;
  --accent: #2B56D9;
  --accent-ink: #FFFFFF;
  --rule: #C9D6F2;
  --margin: #E2565B;
  --ok: #1E7F4F;
  --font-display: "Bricolage Grotesque", "Avenir Next", system-ui, sans-serif;
  --font-body: "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0E121A; --surface: #161C27; --ink: #E7EBF3; --muted: #97A1B4; --line: #283041;
    --accent: #7C9BFF; --accent-ink: #0E121A; --rule: #24304A; --margin: #E66F73; --ok: #5CC98E;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0E121A; --surface: #161C27; --ink: #E7EBF3; --muted: #97A1B4; --line: #283041;
  --accent: #7C9BFF; --accent-ink: #0E121A; --rule: #24304A; --margin: #E66F73; --ok: #5CC98E;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  padding-inline: 16px;
  padding-block: 0 48px;
}
a { color: var(--accent); }
.wrap { max-width: 1120px; margin: 0 auto; }

/* Top bar */
.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-block: 16px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 800; font-size: 20px; color: var(--ink); text-decoration: none; letter-spacing: -.01em; }
.brand svg { width: 30px; height: 30px; flex: none; }
.langs { display: flex; flex-wrap: wrap; gap: 4px; font-size: 14px; }
.langs a { text-decoration: none; color: var(--muted); padding: 4px 8px; border-radius: 6px; }
.langs a[aria-current="page"] { color: var(--ink); background: var(--surface); box-shadow: inset 0 0 0 1px var(--line); font-weight: 600; }

/* Hero */
.hero { padding-block: 24px 28px; max-width: 760px; }
.hero h1 {
  font-family: var(--font-display); font-weight: 800; font-size: clamp(34px, 6.2vw, 60px);
  line-height: 1.02; letter-spacing: -.025em; margin: 0 0 14px; text-wrap: balance;
}
.hero h1 .arrow { color: var(--accent); }
.hero p { margin: 0; color: var(--muted); font-size: 19px; max-width: 60ch; }
.badges { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 16px; font-size: 14px; color: var(--muted); padding: 0; list-style: none; }
.badges li::before { content: "✓ "; color: var(--ok); font-weight: 700; }

/* Tool */
.tool { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px; align-items: start; }
@media (max-width: 860px) { .tool { grid-template-columns: minmax(0, 1fr); } }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 16px; display: grid; gap: 14px; min-width: 0; }
.panel-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.panel-head h2 { margin: 0; font-family: var(--font-display); font-size: 18px; font-weight: 700; }
.step { font-family: var(--font-mono); font-size: 12px; color: var(--accent); letter-spacing: .04em; margin-right: 6px; }
.linkbtn { background: none; border: 0; padding: 0; font: inherit; font-size: 14px; color: var(--accent); cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.linkbtn + .linkbtn { margin-left: 12px; }
textarea {
  width: 100%; min-height: 340px; resize: vertical; border: 1px solid var(--line); border-radius: 10px;
  background: var(--bg); color: var(--ink); padding: 12px; font-family: var(--font-mono); font-size: 14px; line-height: 1.5;
}
textarea:focus, input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.opts { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 12px; }
@media (max-width: 480px) { .opts { grid-template-columns: minmax(0, 1fr); } }
.opts label.field { display: grid; gap: 4px; font-size: 13px; color: var(--muted); font-weight: 600; }
.opts input[type="text"] { width: 100%; border: 1px solid var(--line); border-radius: 8px; padding: 9px 10px; font: inherit; font-size: 15px; background: var(--bg); color: var(--ink); }
.checks { display: grid; gap: 8px; grid-column: 1 / -1; }
.checks label { display: flex; gap: 8px; align-items: flex-start; font-size: 15px; cursor: pointer; }
.checks input { margin-top: 4px; accent-color: var(--accent); }

.status { font-size: 14px; color: var(--muted); }
.status b { color: var(--ink); font-variant-numeric: tabular-nums; }
.cards { display: grid; gap: 10px; max-height: 520px; overflow: auto; padding: 2px 4px 2px 2px; }
.empty { border: 1px dashed var(--line); border-radius: 10px; padding: 28px 16px; text-align: center; color: var(--muted); font-size: 15px; }

/* An index card: blue rules, red margin line. */
.icard {
  position: relative; border-radius: 6px; padding: 10px 36px 10px 22px; min-width: 0;
  background-color: var(--surface);
  background-image:
    linear-gradient(to right, transparent 13px, var(--margin) 13px, var(--margin) 14px, transparent 14px),
    repeating-linear-gradient(to bottom, transparent 0, transparent 25px, var(--rule) 25px, var(--rule) 26px);
  box-shadow: 0 0 0 1px var(--line), 0 1px 2px rgba(18, 24, 38, .06);
  font-size: 15px; line-height: 26px;
}
.icard .f { font-weight: 600; overflow-wrap: anywhere; }
.icard .b { color: var(--muted); overflow-wrap: anywhere; border-top: 1px dashed var(--line); margin-top: 2px; }
.icard .kind { position: absolute; right: 34px; top: 8px; font-family: var(--font-mono); font-size: 11px; color: var(--accent); line-height: 1; }
.icard .cl { color: var(--accent); font-weight: 700; }
.icard .x { position: absolute; right: 6px; top: 6px; width: 24px; height: 24px; border-radius: 6px; border: 0; background: transparent; color: var(--muted); cursor: pointer; font-size: 18px; line-height: 1; }
.icard .x:hover { background: var(--bg); color: var(--margin); }
.icard code { font-family: var(--font-mono); font-size: .88em; }

.dl { display: grid; gap: 8px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 10px;
  padding: 14px 18px; font: inherit; font-weight: 700; font-size: 17px; cursor: pointer; width: 100%;
}
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn:focus-visible, .linkbtn:focus-visible, .x:focus-visible, .copy:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.hint { font-size: 13px; color: var(--muted); margin: 0; }
.msg { font-size: 14px; margin: 0; min-height: 1.4em; }
.msg.ok { color: var(--ok); }
.msg.err { color: var(--margin); }

/* Content sections */
section.block { padding-block: 44px 0; }
section.block h2 { font-family: var(--font-display); font-weight: 800; font-size: clamp(24px, 3.6vw, 32px); letter-spacing: -.015em; margin: 0 0 14px; text-wrap: balance; }
section.block > p { max-width: 68ch; margin: 0 0 14px; }
.prompt { position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px; max-width: 820px; }
.prompt pre { margin: 0; white-space: pre-wrap; font-family: var(--font-mono); font-size: 14px; line-height: 1.6; overflow-wrap: anywhere; }
.copy { margin-top: 12px; background: var(--ink); color: var(--bg); border: 0; border-radius: 8px; padding: 8px 14px; font: inherit; font-size: 14px; font-weight: 600; cursor: pointer; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; counter-reset: s; }
@media (max-width: 760px) { .steps { grid-template-columns: minmax(0, 1fr); } }
.steps li { counter-increment: s; display: grid; gap: 4px; }
.steps li::before { content: counter(s); font-family: var(--font-display); font-weight: 800; font-size: 30px; color: var(--accent); line-height: 1; }
.steps h3 { margin: 0; font-size: 18px; }
.steps p { margin: 0; color: var(--muted); }
.formats { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0; list-style: none; }
.formats li { background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 5px 12px; font-size: 14px; }
.faq { display: grid; gap: 8px; max-width: 820px; }
.faq details { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { margin: 8px 0 0; color: var(--muted); }
footer.foot { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); display: grid; gap: 6px; }
footer.foot p { margin: 0; }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }

/* Guide pages and footer navigation */
ul.plain { margin: 0 0 14px; padding-left: 1.2em; max-width: 68ch; display: grid; gap: 6px; }
.guides h2 { font-family: var(--font-display); font-size: 16px; margin: 0 0 6px; color: var(--ink); }
.guides ul { list-style: none; margin: 0 0 10px; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 16px; }

/* "Try an example" was easy to miss on phones: make it a filled pill. */
#example { background: var(--accent); color: var(--accent-ink); border-radius: 999px; padding: 6px 14px; text-decoration: none; font-weight: 600; }