/* LenWithMe TUTORING — "Ledger & Chalk": warm paper, deep teal ink, brass accent. */
/* Completed by the platform from the short form: both modes, every
   palette token, each text-on-ground pair at its floor. To restyle, write the
   short form again (the decisions in one :root) and it is completed again. */

:root {
  --canvas: #f6f2e8;
  --surface: #fffdf7;
  --surface-2: #efe7d6;
  --border: #ded2b8;
  --border-strong: #adada7;
  --ink: #16222c;
  --muted: #565e6c;
  --accent: #0d5464;
  --accent-hover: #0b4755;
  --accent-ink: #ffffff;
  --accent-text: #0a4a58;
  --accent-strong: #073a45;
  --accent-soft: #d9eaed;
  --accent-border: #8dabad;
  --success: #2f6d4f;
  --success-ink: #ffffff;
  --success-soft: #dee2d6;
  --success-strong: #2f6d4f;
  --warning: #96610f;
  --warning-ink: #ffffff;
  --warning-soft: #eae1ce;
  --warning-strong: #8a590e;
  --danger: #a32a25;
  --danger-ink: #ffffff;
  --danger-soft: #ecdad1;
  --danger-strong: #a32a25;
  --chart-1: #0d5464;
  --chart-2: #545aac;
  --chart-3: #772a66;
  --chart-4: #993e21;
  --chart-5: #5a4d02;
  --chart-6: #127348;

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --display-weight: 600;
  --display-tracking: -0.015em;
  --eyebrow-tracking: 0.14em;
  --radius-btn: 10px;
  --radius-card: 14px;
  --radius-input: 10px;
  --shadow-card: 0 1px 2px rgba(22, 34, 44, 0.05), 0 10px 28px rgba(22, 34, 44, 0.07);
  --card-pad: 22px;
  --x-grain: rgba(22, 34, 44, 0.035);
  --x-band: #102e39;
  --x-band-2: #0a2029;
  --x-band-ink: #e9f1f2;
  --x-band-muted: #a8c2c7;
  --x-brass: #b9791f;
  --x-good: #3f7d5c;
  --x-warn: #a9740f;
  --x-bad: #b4483f;
  --x-on-photo: #ffffff;
  --x-chart-1: #0d5464;
  --x-chart-2: #b9791f;
  --x-chart-3: #5f7a38;
  --x-chart-4: #a34a52;
  --x-chart-5: #4a5b8c;
  --x-chart-6: #8a6a3f;
  --gradient-ink: linear-gradient(140deg, #0d5464 0%, #102e39 55%, #0a2029 100%);
  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
}

html[data-theme="dark"] {
  --canvas: #020c0e;
  --surface: #1b2426;
  --surface-2: #0f181a;
  --border: #252e30;
  --border-strong: #4e5556;
  --ink: #f6f2e8;
  --muted: #949691;
  --accent: #0d5464;
  --accent-hover: #316e7b;
  --accent-ink: #ffffff;
  --accent-text: #6c99a1;
  --accent-strong: #5f9099;
  --accent-soft: #041c21;
  --accent-border: #072c35;
  --success: #2f6d4f;
  --success-ink: #ffffff;
  --success-soft: #0c211c;
  --success-strong: #6a9781;
  --warning: #96610f;
  --warning-ink: #ffffff;
  --warning-soft: #231f0e;
  --warning-strong: #ad8544;
  --danger: #a32a25;
  --danger-ink: #ffffff;
  --danger-soft: #251313;
  --danger-strong: #c2726f;
  --chart-1: #377687;
  --chart-2: #757dd3;
  --chart-3: #b15f9b;
  --chart-4: #c16144;
  --chart-5: #938011;
  --chart-6: #279a65;
}

/* LenWithMe — texture, dashboards, charts, chat, wizard. No colour literals. */

body {
  background-image: radial-gradient(var(--x-grain) 1px, transparent 1px);
  background-size: 22px 22px;
}

.paper-edge {
  background-image: linear-gradient(var(--x-grain) 1px, transparent 1px);
  background-size: 100% 26px;
}

.grid-ink {
  background-color: var(--x-band);
  background-image: linear-gradient(var(--x-band-ink) 1px, transparent 1px),
    linear-gradient(90deg, var(--x-band-ink) 1px, transparent 1px);
  background-size: 46px 46px;
  background-position: center;
  opacity: 0.06;
}

.grid-ink-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

/* ---------- progress + bars ---------- */
.bar {
  height: 8px;
  border-radius: 999px;
  background-color: var(--surface-2);
  overflow: hidden;
}
.bar > span {
  display: block;
  height: 100%;
  width: var(--p, 0%);
  border-radius: 999px;
  background-color: var(--accent);
  transition: width 0.4s ease;
}
.bar.tall {
  height: 12px;
}
.bar > span.brass {
  background-color: var(--x-brass);
}
.bar > span.good {
  background-color: var(--success);
}

.hbar {
  display: grid;
  grid-template-columns: 9.5rem 1fr 3.25rem;
  align-items: center;
  gap: 0.75rem;
}

/* ---------- dashboard chrome ---------- */
.nav-link {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-input);
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid transparent;
  transition: background-color 0.15s ease, color 0.15s ease;
}
.nav-link:hover {
  background-color: var(--surface-2);
  color: var(--ink);
}
.nav-link[aria-current="page"] {
  background-color: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-strong);
  font-weight: 600;
}

.rail {
  border-right: 1px solid var(--border);
  background-color: var(--surface);
}
.rail-scroll {
  display: flex;
  gap: 0.375rem;
  overflow-x: auto;
  scrollbar-width: none;
}
.rail-scroll::-webkit-scrollbar {
  display: none;
}
.rail-scroll > * {
  flex: 0 0 auto;
}

.rule-dots {
  border-top: 1px dashed var(--border);
}

/* ---------- chat ---------- */
.bubble {
  max-width: 85%;
  padding: 0.6rem 0.85rem;
  border-radius: 14px;
  font-size: 0.9rem;
  line-height: 1.45;
  border: 1px solid var(--border);
  background-color: var(--surface);
}
.bubble.them {
  border-bottom-left-radius: 4px;
}
.bubble.me {
  margin-left: auto;
  background-color: var(--accent-soft);
  border-color: var(--accent);
  border-bottom-right-radius: 4px;
  color: var(--accent-strong);
}

/* ---------- wizard ---------- */
.step-rail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}
.step-dot {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--muted);
  padding-top: 0.6rem;
  border-top: 3px solid var(--border);
  transition: border-color 0.2s ease, color 0.2s ease;
}
.step-dot b {
  display: grid;
  place-items: center;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong, var(--border));
  font-size: 0.75rem;
}
.step-dot[data-on="1"] {
  border-top-color: var(--accent);
  color: var(--accent-strong);
  font-weight: 600;
}
.step-dot[data-on="1"] b {
  background-color: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink, var(--surface));
}

fieldset[data-step][hidden] {
  display: none;
}

.subject-pick {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-input);
  background-color: var(--surface);
  cursor: pointer;
  font-size: 0.875rem;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.subject-pick:has(input:checked) {
  border-color: var(--accent);
  background-color: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 600;
}
.format-pick {
  display: block;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background-color: var(--surface);
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.format-pick:has(input:checked) {
  border-color: var(--accent);
  background-color: var(--accent-soft);
}

/* ---------- misc ---------- */
.tabnum {
  font-variant-numeric: tabular-nums;
}
.marquee {
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, var(--ink) 8%, var(--ink) 92%, transparent);
}
.marquee > div {
  display: flex;
  width: max-content;
  animation: drift 38s linear infinite;
}
.marquee:hover > div {
  animation-play-state: paused;
}
@keyframes drift {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}
.count-big {
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
}
details > summary {
  cursor: pointer;
  list-style: none;
}
details > summary::-webkit-details-marker {
  display: none;
}
details[open] > summary .chev {
  transform: rotate(90deg);
}
.chev {
  transition: transform 0.18s ease;
}

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