/* ============================================================
   MAGNITUDE — drafting-office design system
   Light mode: vellum + graph grid. Dark mode: literal blueprint.
   ============================================================ */

:root {
  --paper: #fafaf8;
  --grid: rgba(36, 86, 166, 0.07);
  --card: #ffffff;
  --ink: #1b2531;
  --ink-2: #5a6675;
  --ink-3: #8d97a5;
  --line: #d9dde3;
  --line-strong: #b7bfc9;
  --accent: #2456a6;
  --on-accent: #ffffff;

  --b1-bg: #e9f2dd; --b1-fg: #2f5310; --b1-sq: #6ea53b;
  --b2-bg: #faeed6; --b2-fg: #6b4a0a; --b2-sq: #e2a23b;
  --b3-bg: #fae9e1; --b3-fg: #7a3416; --b3-sq: #d96b3d;
  --b4-bg: #fbe7e7; --b4-fg: #8a2323; --b4-sq: #d94f4f;

  --ok: #3b6d11;
  --bad: #a32d2d;

  --radius: 8px;
  --maxw: 470px;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --font-display: "Saira Condensed", "Arial Narrow", sans-serif;
}

[data-theme="dark"] {
  --paper: #0c1f33;
  --grid: rgba(141, 181, 226, 0.09);
  --card: #12293f;
  --ink: #e9eef5;
  --ink-2: #a9b8c9;
  --ink-3: #6e8199;
  --line: #24405c;
  --line-strong: #38587a;
  --accent: #7fb1e8;
  --on-accent: #0c1f33;

  --b1-bg: #1e3413; --b1-fg: #c0dd97; --b1-sq: #97c459;
  --b2-bg: #3c2f0d; --b2-fg: #fac775; --b2-sq: #ef9f27;
  --b3-bg: #40200f; --b3-fg: #f0997b; --b3-sq: #d85a30;
  --b4-bg: #421414; --b4-fg: #f09595; --b4-sq: #e24b4a;

  --ok: #97c459;
  --bad: #f09595;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: background-color 0.25s ease, color 0.25s ease;
}

.mono { font-family: var(--font-mono); }
.quiet { color: var(--ink-2); font-size: 13px; }

/* ---------- Title block header ---------- */
.titleblock {
  width: 100%;
  max-width: var(--maxw);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px 10px;
  border-bottom: 3px double var(--line-strong);
}

.brand { display: flex; flex-direction: column; }

.wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 26px;
  letter-spacing: 4px;
  line-height: 1;
}

.tagline {
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-top: 3px;
}

.tools { display: flex; gap: 4px; }

.iconbtn {
  background: none;
  border: none;
  color: var(--ink-2);
  padding: 8px;
  border-radius: var(--radius);
  cursor: pointer;
  line-height: 0;
}
.iconbtn:hover { color: var(--ink); background: var(--grid); }

/* ---------- Main sheet ---------- */
.sheet {
  width: 100%;
  max-width: var(--maxw);
  padding: 18px 16px 32px;
  flex: 1;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 12px;
}
.eyebrow .dot { color: var(--line-strong); }
.eyebrow .spacer { flex: 1; }

.unit-toggle {
  display: flex;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.unitbtn {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 4px 10px;
  border: none;
  background: transparent;
  color: var(--ink-2);
  cursor: pointer;
}
.unitbtn[aria-pressed="true"] { background: var(--accent); color: var(--on-accent); }
.unit-toggle.locked .unitbtn { cursor: not-allowed; opacity: 0.6; }

h1 {
  font-size: 22px;
  font-weight: 500;
  margin: 0 0 4px;
  line-height: 1.3;
}

.sub { margin: 0 0 4px; color: var(--ink-2); font-size: 14px; }
.tries { margin: 0 0 16px; color: var(--ink-3); font-size: 13px; }

/* ---------- Input ---------- */
.playrow { display: flex; gap: 8px; margin-bottom: 14px; }

#g {
  flex: 1;
  min-width: 0;
  font-size: 17px;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--ink);
}
#g:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }

button.primary {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  padding: 10px 18px;
  border: none;
  border-radius: var(--radius);
  background: var(--accent);
  color: var(--on-accent);
  cursor: pointer;
}
button.primary:hover { filter: brightness(1.08); }
button.primary:active { transform: scale(0.98); }

button.ghost {
  font-family: var(--font-body);
  font-size: 13px;
  padding: 8px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ink-2);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
button.ghost:hover { color: var(--ink); border-color: var(--ink-3); }

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

/* ---------- Guess history ---------- */
.hist { display: flex; flex-direction: column; gap: 6px; }

.guessrow {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border-radius: var(--radius);
  padding: 9px 12px;
  font-size: 14px;
}
.guessrow .val { font-family: var(--font-mono); font-weight: 500; min-width: 84px; }
.guessrow .arrow { line-height: 1.2; }
.guessrow .quip {
  display: block;
  font-size: 12px;
  font-style: italic;
  margin-top: 2px;
}
.gb1 { background: var(--b1-bg); color: var(--b1-fg); }
.gb2 { background: var(--b2-bg); color: var(--b2-fg); }
.gb3 { background: var(--b3-bg); color: var(--b3-fg); }
.gb4 { background: var(--b4-bg); color: var(--b4-fg); }

/* ---------- Hints ---------- */
.hintbox { margin-top: 14px; }
.hints { display: flex; flex-direction: column; gap: 6px; margin-top: 8px; }
.hint {
  font-size: 13px;
  color: var(--ink-2);
  background: var(--card);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  padding: 8px 12px;
  margin: 0;
}

/* ---------- Result ---------- */
.done { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 16px; }

.stampzone { text-align: center; margin: 8px 0 14px; }

.stamp {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: 3px;
  text-transform: uppercase;
  border: 3px solid currentColor;
  border-radius: 6px;
  padding: 4px 16px;
  transform: rotate(-7deg);
  animation: stampin 0.45s ease-out;
}
.stamp.ok { color: var(--ok); }
.stamp.bad { color: var(--bad); }

@keyframes stampin {
  0%   { transform: scale(2.4) rotate(-14deg); opacity: 0; }
  60%  { transform: scale(0.94) rotate(-7deg); opacity: 1; }
  100% { transform: scale(1) rotate(-7deg); opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .stamp { animation: none; }
}

.stampzone .quiet { margin: 8px 0 0; }

.verdict { font-size: 15px; font-weight: 500; margin: 0 0 8px; }

.squares { display: flex; gap: 4px; margin-bottom: 8px; }
.sq { width: 22px; height: 22px; border-radius: 5px; display: inline-block; }
.sq.s1 { background: var(--b1-sq); }
.sq.s2 { background: var(--b2-sq); }
.sq.s3 { background: var(--b3-sq); }
.sq.s4 { background: var(--b4-sq); }

#stats-line { margin: 0 0 10px; font-size: 12px; }

.path { font-size: 14px; color: var(--ink-2); margin: 0 0 4px; }
.path strong { color: var(--ink); }
.source { margin: 0 0 14px; font-size: 12px; }

.actions { display: flex; gap: 8px; margin-bottom: 14px; }

.countdown { margin: 0 0 18px; }

.grow { border-top: 1px dashed var(--line); padding-top: 14px; display: flex; flex-direction: column; gap: 10px; }
.emailrow { display: flex; gap: 8px; flex-wrap: wrap; }
.emailrow input {
  flex: 1;
  min-width: 160px;
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--ink);
}
.tip { color: var(--ink-3); text-decoration: underline; }
.tip:hover { color: var(--ink); }

/* ---------- Footer ---------- */
.foot {
  width: 100%;
  max-width: var(--maxw);
  padding: 10px 16px 24px;
  border-top: 3px double var(--line-strong);
  font-size: 11px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ---------- Modals ---------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(10, 20, 34, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 50;
}
.modal-backdrop[hidden] { display: none; }

.modal {
  background: var(--card);
  color: var(--ink);
  border-radius: 12px;
  border: 1px solid var(--line);
  max-width: 430px;
  width: 100%;
  max-height: 84vh;
  overflow-y: auto;
  padding: 18px 20px 22px;
}
.modal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 4px; }
.modal h2 { font-size: 18px; font-weight: 500; margin: 0; }
.modal h3 { font-size: 14px; font-weight: 500; margin: 16px 0 6px; }
.modal p { font-size: 14px; margin: 8px 0; }
.modal-close { font-size: 14px; }

.bands-legend { list-style: none; padding: 0; margin: 8px 0; display: flex; flex-direction: column; gap: 6px; font-size: 14px; }
.bands-legend li { display: flex; align-items: center; gap: 8px; }
.chip { width: 18px; height: 18px; border-radius: 4px; display: inline-block; }
.chip.b1 { background: var(--b1-sq); }
.chip.b2 { background: var(--b2-sq); }
.chip.b3 { background: var(--b3-sq); }
.chip.b4 { background: var(--b4-sq); }

.statgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 12px 0; }
.stat { text-align: center; background: var(--paper); border-radius: var(--radius); padding: 10px 4px; }
.statnum { display: block; font-size: 20px; font-weight: 500; }
.statlabel { font-size: 11px; color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.5px; }
.statrow { color: var(--ink-2); }

.sparkline { display: flex; align-items: flex-end; gap: 3px; height: 48px; }
.spark { flex: 1; background: var(--accent); border-radius: 2px 2px 0 0; min-height: 2px; opacity: 0.85; }
.spark.empty { background: var(--line); }

.disciplines { display: flex; flex-direction: column; gap: 6px; }
.discrow { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.discrow .dname { min-width: 92px; color: var(--ink-2); text-transform: capitalize; }
.discbar { flex: 1; height: 8px; background: var(--paper); border-radius: 4px; overflow: hidden; }
.discfill { height: 100%; background: var(--accent); border-radius: 4px; }
.discrow .dscore { font-family: var(--font-mono); font-size: 12px; min-width: 30px; text-align: right; }

@media (max-width: 380px) {
  .wordmark { font-size: 22px; letter-spacing: 3px; }
  h1 { font-size: 20px; }
}