/* ============================================================================
   Daily Drill — BI Console surface

   The palette below MIRRORS src/styles/variables.css. It is duplicated because
   public/ is served raw and cannot import from src/. scripts/check-theme.mjs
   scans this file so the two cannot silently drift apart.

   Design brief, specific to this app rather than the site:
   - It opens straight into a question (SPEC §3), so there is no header moment.
     Identity is carried by the grid and the palette in the periphery; nothing
     competes with the prompt for first read.
   - It is used at night, on a phone, when tired. Large targets, high contrast,
     no hover-dependent affordances, no motion that demands attention.
   - Feedback is never punitive (SPEC §3). A missed criterion is AMBER, never
     danger red — red is reserved for destructive actions in settings. There is
     no red X anywhere in the answer flow.
   ========================================================================== */

:root {
  --bg:            #0a0e1a;
  --bg-elevated:   #0e1424;
  --surface:       #0d1322;
  --border:        rgba(255, 255, 255, 0.08);
  --border-subtle: rgba(255, 255, 255, 0.06);

  --text:       #f4f7fd;
  --text-body:  #cdd5e8;
  --text-muted: #9aa6c2;
  --text-faint: #616d8c;
  --text-dark:  #2a3450;

  --ac:      #2dd4bf;
  --ac-lite: #5fe6d4;
  --ac-soft: #7ee0d0;
  --amber:   #f0a868;
  --amber-bg: rgba(240, 168, 104, 0.12);
  --danger:  #f87171;

  --font-display: 'Space Grotesk', ui-sans-serif, system-ui, sans-serif;
  --font-body: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --r-sm: 8px;
  --r-md: 10px;
  --r-lg: 14px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg);
  color: var(--text-body);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

#site {
  position: relative;
  min-height: 100dvh;
  overflow-x: hidden;
  background:
    radial-gradient(900px 480px at 78% -8%, color-mix(in srgb, var(--ac) 10%, transparent), transparent 60%),
    radial-gradient(700px 420px at 8% 8%, rgba(240, 168, 104, 0.06), transparent 60%),
    var(--bg);
}

/* Required on every BI Console surface. */
#bg-grid {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  opacity: 0.5;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 64px 64px;
}

.shell {
  position: relative; z-index: 1;
  max-width: 680px;
  margin: 0 auto;
  padding: 0 20px 64px;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ---------------------------------------------------------------- rail */

.rail {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0 30px;
}

/* Discrete pips, never a percentage bar (SPEC §3): four things, and you can
   see all four at once. */
.pips { display: flex; gap: 10px; list-style: none; }

.pips li {
  width: 9px; height: 9px;
  border-radius: 50%;
  border: 1.5px solid var(--text-dark);
  transition: background-color 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.pips li[data-state="done"] { background: var(--ac); border-color: var(--ac); }
.pips li[data-state="current"] {
  border-color: var(--ac);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ac) 16%, transparent);
}

.icon-btn {
  display: grid; place-items: center;
  width: 38px; height: 38px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--text-faint);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background-color 0.2s;
}
.icon-btn:hover { color: var(--text-body); border-color: var(--border); background: rgba(255, 255, 255, 0.03); }

/* ---------------------------------------------------------------- boot */

.boot {
  display: flex; align-items: center; gap: 12px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 13px;
  padding-top: 12vh;
}
.boot-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ac);
  animation: pulse 1.6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.45; transform: scale(0.82); }
}

/* ---------------------------------------------------------------- question */

main { flex: 1; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--amber);
  margin-bottom: 14px;
}

.q-meta {
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap;
  margin-bottom: 16px;
}
.q-meta .concept {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--amber);
}
.chip {
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 3px 9px;
  border-radius: 6px;
  color: var(--ac-soft);
  background: color-mix(in srgb, var(--ac) 10%, transparent);
}
.chip.work { color: var(--amber); background: var(--amber-bg); }

/* The prompt is the one thing on screen that matters. Display face, large,
   short measure. */
.prompt {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(21px, 4.4vw, 26px);
  line-height: 1.38;
  letter-spacing: -0.015em;
  color: var(--text);
  margin-bottom: 26px;
}

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

.options { display: flex; flex-direction: column; gap: 10px; margin-bottom: 26px; }

.opt {
  display: flex; align-items: flex-start; gap: 13px;
  min-height: 52px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg-elevated);
  color: var(--text-body);
  font-size: 16px;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.18s, background-color 0.18s, transform 0.18s;
}
.opt:hover:not(:disabled) { border-color: color-mix(in srgb, var(--ac) 40%, transparent); }
.opt:active:not(:disabled) { transform: translateY(1px); }
.opt[aria-pressed="true"] {
  border-color: var(--ac);
  background: color-mix(in srgb, var(--ac) 8%, var(--bg-elevated));
  color: var(--text);
}

/* the marker: circle for single-choice, square for multi */
.opt .mark {
  flex: 0 0 auto;
  width: 19px; height: 19px;
  margin-top: 2px;
  border: 1.5px solid var(--text-dark);
  border-radius: 50%;
  display: grid; place-items: center;
  transition: border-color 0.18s, background-color 0.18s;
}
.opt[data-multi] .mark { border-radius: 5px; }
.opt[aria-pressed="true"] .mark { border-color: var(--ac); background: var(--ac); }
.opt[aria-pressed="true"] .mark::after {
  content: '';
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--bg);
}
.opt[data-multi][aria-pressed="true"] .mark::after {
  width: 9px; height: 5px; border-radius: 0;
  border-left: 2px solid var(--bg);
  border-bottom: 2px solid var(--bg);
  background: none;
  transform: rotate(-45deg) translate(1px, -1px);
}

/* Graded states — teal for hit, amber for missed. Never red.
   These carry the whole message on a wrong answer ("the answer is marked
   above"), so they are at full strength, not a hint. Dashed = the key you did
   not pick; solid = the option you chose. */
.opt[data-grade="hit"] { border-color: var(--ac); background: color-mix(in srgb, var(--ac) 12%, var(--bg-elevated)); }
.opt[data-grade="missed"] { border-color: var(--amber); background: var(--amber-bg); }
.opt[data-grade="missed"] .mark { border-color: var(--amber); background: var(--amber); }
.opt[data-grade="key"] {
  border-color: var(--ac);
  border-style: dashed;
  background: color-mix(in srgb, var(--ac) 7%, var(--bg-elevated));
  color: var(--text);
}
.opt[data-grade="key"] .mark { border-color: var(--ac); border-style: dashed; }
.opt:disabled { cursor: default; }

/* ---------------------------------------------------------------- code + lines */

.inline-code {
  font-family: var(--font-mono);
  font-size: 0.86em;
  color: var(--ac-soft);
  background: rgba(255, 255, 255, 0.06);
  padding: 2px 6px;
  border-radius: 5px;
  white-space: nowrap;
}
.opt .inline-code, .crit .inline-code { font-size: 0.88em; }

.code {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  margin-bottom: 22px;
  overflow-x: auto;
  white-space: pre;
  color: var(--text-body);
}

.lines { list-style: none; margin-bottom: 26px; border-radius: 12px; overflow: hidden; border: 1px solid var(--border); }

.lines li { display: block; }

.line {
  display: flex; gap: 14px; width: 100%;
  padding: 7px 16px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.65;
  text-align: left;
  background: var(--surface);
  border: none;
  border-left: 3px solid transparent;
  color: var(--text-body);
  cursor: pointer;
  white-space: pre;
  overflow-x: auto;
  transition: background-color 0.15s, border-color 0.15s;
}
.line:hover:not(:disabled) { background: var(--bg-elevated); }
.line .ln { color: var(--text-dark); flex: 0 0 auto; user-select: none; }
.line[aria-pressed="true"] { background: color-mix(in srgb, var(--ac) 9%, var(--surface)); border-left-color: var(--ac); }
.line[data-grade="hit"] { background: color-mix(in srgb, var(--ac) 11%, var(--surface)); border-left-color: var(--ac); }
.line[data-grade="missed"] { background: var(--amber-bg); border-left-color: var(--amber); }
.line[data-grade="key"] { border-left-color: var(--amber); }
.line:disabled { cursor: default; }

/* ---------------------------------------------------------------- inputs */

.field {
  width: 100%;
  padding: 13px 15px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  transition: border-color 0.18s, box-shadow 0.18s;
}
.field::placeholder { color: var(--text-dark); }
.field:focus-visible,
textarea.answer:focus-visible {
  outline: none;
  border-color: var(--ac);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ac) 15%, transparent);
}

textarea.answer {
  width: 100%;
  min-height: 168px;
  padding: 16px 17px;
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  resize: vertical;
  margin-bottom: 22px;
}
textarea.answer:disabled { color: var(--text-muted); opacity: 1; }

.blanks { display: flex; flex-direction: column; gap: 12px; margin-bottom: 26px; }

/* ordering + matching */
.ord { display: flex; flex-direction: column; gap: 10px; margin-bottom: 18px; }
.ord .opt { align-items: center; }
.ord .badge {
  flex: 0 0 auto;
  width: 26px; height: 26px;
  display: grid; place-items: center;
  border-radius: 7px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-dark);
  border: 1px solid var(--border);
}
.ord .opt[aria-pressed="true"] .badge { color: var(--bg); background: var(--ac); border-color: var(--ac); }

.pairs { display: flex; flex-direction: column; gap: 12px; margin-bottom: 26px; }
/* Both halves get real width: an `auto` select column starved the label and
   wrapped "FULL OUTER JOIN" onto three lines. */
.pair {
  display: grid;
  grid-template-columns: minmax(110px, 0.8fr) minmax(0, 1.2fr);
  gap: 14px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--bg-elevated);
}
.pair > span { font-size: 15px; line-height: 1.35; }
.pair[data-grade="hit"] { border-color: color-mix(in srgb, var(--ac) 50%, transparent); }
.pair[data-grade="missed"] { border-color: color-mix(in srgb, var(--amber) 50%, transparent); }
.pair select {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 9px 11px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
}

.tf { display: flex; gap: 12px; margin-bottom: 26px; }
.tf .opt { flex: 1; justify-content: center; font-family: var(--font-mono); font-weight: 500; }

/* ---------------------------------------------------------------- rubric */

/* Stays on screen next to what you wrote (SPEC §3) — never a screen transition
   that makes you hold the prompt in your head. */
.rubric {
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg-elevated);
  padding: 18px 18px 6px;
  margin-bottom: 24px;
}
.rubric .eyebrow { color: var(--text-faint); margin-bottom: 12px; }

.crit {
  display: flex; align-items: flex-start; gap: 13px;
  width: 100%;
  padding: 11px 2px;
  background: none; border: none;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-body);
  font-size: 15.5px;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
}
.rubric .crit:last-of-type { border-bottom: none; }
.crit .box {
  flex: 0 0 auto;
  width: 20px; height: 20px; margin-top: 1px;
  border: 1.5px solid var(--text-dark);
  border-radius: 6px;
  display: grid; place-items: center;
  transition: border-color 0.18s, background-color 0.18s;
}
.crit[aria-pressed="true"] { color: var(--text); }
.crit[aria-pressed="true"] .box { border-color: var(--ac); background: var(--ac); }
.crit[aria-pressed="true"] .box::after {
  content: '';
  width: 9px; height: 5px;
  border-left: 2px solid var(--bg);
  border-bottom: 2px solid var(--bg);
  transform: rotate(-45deg) translate(1px, -1px);
}
/* an unticked criterion after grading is the missing piece, stated plainly */
.crit[data-grade="missed"] .box { border-color: var(--amber); border-style: dashed; }
.crit[data-grade="missed"] { color: var(--amber); }
.crit:disabled { cursor: default; }

/* ---------------------------------------------------------------- feedback */

.feedback {
  border-left: 3px solid var(--ac);
  padding: 2px 0 2px 16px;
  margin-bottom: 24px;
  color: var(--text-muted);
  font-size: 15.5px;
}
.feedback.partial { border-left-color: var(--amber); }
.feedback strong { color: var(--text); font-weight: 500; }
.feedback .why { display: block; margin-top: 6px; }

.prior {
  margin-bottom: 24px;
  font-size: 15px;
}
.prior summary {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  cursor: pointer;
  padding: 6px 0;
}
.prior summary:hover { color: var(--text-muted); }
.prior blockquote {
  border-left: 2px solid var(--border);
  padding-left: 14px;
  margin-top: 10px;
  color: var(--text-muted);
  white-space: pre-wrap;
}
.prior time {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-dark);
  margin-bottom: 4px;
}

/* ---------------------------------------------------------------- buttons */

.actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }

.btn-primary, .btn-secondary {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.01em;
  padding: 12px 20px;
  border-radius: var(--r-md);
  cursor: pointer;
  transition: background-color 0.18s, border-color 0.18s, color 0.18s, opacity 0.18s;
}
.btn-primary { background: var(--ac); color: var(--bg); border: 1px solid var(--ac); }
.btn-primary:hover:not(:disabled) { background: var(--ac-lite); border-color: var(--ac-lite); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-secondary { background: transparent; color: var(--text-body); border: 1px solid rgba(255, 255, 255, 0.14); }
.btn-secondary:hover { border-color: color-mix(in srgb, var(--ac) 50%, transparent); color: var(--text); }
.btn-secondary.sm { padding: 8px 14px; font-size: 13px; }
.btn-secondary.danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 30%, transparent); }
.btn-secondary.danger:hover { border-color: var(--danger); color: var(--danger); }

:where(button, a, input, select, textarea):focus-visible {
  outline: 2px solid var(--ac);
  outline-offset: 2px;
}

.hint {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dark);
  margin-top: 14px;
}

/* ---------------------------------------------------------------- done */

/* A hard stop with a clear terminal screen — never an infinite feed, never a
   "keep going?" nag (SPEC §3). The extra-reps button is quiet and secondary. */
.done { padding-top: 8vh; }
.done h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(30px, 7vw, 40px);
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 14px;
}
.done p { color: var(--text-muted); margin-bottom: 30px; max-width: 46ch; }
.done .actions { margin-bottom: 34px; }

.stat { display: flex; align-items: baseline; gap: 10px; }
.stat-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 42px;
  letter-spacing: -0.03em;
  color: var(--ac);
}
.stat-label { font-size: 14.5px; color: var(--text-muted); }

.empty { padding-top: 10vh; color: var(--text-muted); }
.empty h1 { font-family: var(--font-display); font-size: 28px; color: var(--text); margin-bottom: 12px; }
.empty code { font-family: var(--font-mono); font-size: 13px; color: var(--ac-soft); background: rgba(255, 255, 255, 0.06); padding: 2px 6px; border-radius: 5px; }

/* ---------------------------------------------------------------- gate */

/* .gate sets display:grid, which (author origin) beats the UA [hidden] rule —
   so the attribute alone would not hide it. Same trap as the Astro Gate. */
.gate[hidden] { display: none; }
.gate {
  display: grid;
  place-items: center;
  padding: 6vh 0 40px;
}
.gate-card {
  width: 100%;
  border-radius: 15px;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
  box-shadow: 0 30px 70px -28px rgba(0, 0, 0, 0.8);
}
.gate-titlebar {
  display: flex; align-items: center; gap: 8px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--border-subtle);
  background: rgba(255, 255, 255, 0.015);
}
.dot-accent { width: 11px; height: 11px; border-radius: 50%; background: var(--amber); flex: 0 0 auto; }
.dot-dim { width: 11px; height: 11px; border-radius: 50%; background: rgba(255, 255, 255, 0.16); flex: 0 0 auto; }
.gate-label { margin-left: 8px; font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); }

.gate-body { padding: 22px; }
.gate-intro { color: var(--text-muted); font-size: 15px; margin-bottom: 20px; }
.gate-field { display: block; margin-bottom: 14px; }
.gate-field span {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin-bottom: 7px;
}
.gate .actions { margin-top: 18px; }
.gate-error { margin-top: 14px; color: var(--amber); font-size: 14.5px; }

/* ---------------------------------------------------------------- settings */

.sheet {
  width: min(560px, calc(100vw - 32px));
  max-height: 86dvh;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  background: var(--bg-elevated);
  color: var(--text-body);
  overflow: auto;
}
.sheet::backdrop { background: rgba(5, 8, 15, 0.72); backdrop-filter: blur(3px); }

.sheet-head {
  position: sticky; top: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 20px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}
.sheet-head h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.02em;
  color: var(--text);
}

.sheet-body { padding: 20px; display: flex; flex-direction: column; gap: 26px; }
.sheet-body .stat { margin-bottom: 2px; }
.group { display: flex; flex-direction: column; gap: 12px; }
.group .eyebrow { margin-bottom: 0; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

.note { font-size: 13.5px; line-height: 1.55; color: var(--text-faint); }
.note.inline { margin: 0; }
.note.version { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-dark); }

.check { display: flex; gap: 11px; align-items: center; cursor: pointer; font-size: 15px; }
.check input { width: 17px; height: 17px; accent-color: var(--ac); cursor: pointer; }

.sheet textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  resize: vertical;
}
.sheet textarea:focus-visible { outline: none; border-color: var(--ac); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ac) 15%, transparent); }

/* ---------------------------------------------------------------- responsive + motion */

@media (max-width: 480px) {
  body { font-size: 16px; }
  .shell { padding: 0 16px 48px; }
  .rail { padding: 16px 0 24px; }
  .opt { padding: 13px 14px; font-size: 15.5px; }
  .pair { grid-template-columns: 1fr; align-items: stretch; }
  .pair select { max-width: none; }
  .tf { flex-direction: column; }
  .actions .btn-primary { flex: 1; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}