/*
  styles.css
  QuantixMind Institute. A clean, bright, editorial academy theme: a white
  canvas washed with a very subtle blue and gold tint, deep confident blue as
  the primary, and warm gold reserved for emphasis. Glassmorphic floating pill
  navigation, bento program cards, scroll revealed sections, an animated stat
  band, a reading progress rail, and a command palette. An open humanist serif
  for display paired with a clean, legible humanist sans for body and UI. A
  site renders in one bright light theme only, regardless of OS preference.

  Performance: no WebGL, no canvas, no continuous requestAnimationFrame loops.
  Aurora washes are static CSS gradients. Motion is CSS transitions driven by
  IntersectionObserver and by scroll events that update a single custom
  property. It stays smooth on modest machines.

  No em dashes or en dashes anywhere. Use commas, colons, or periods.
*/

/* ==========================================================================
   Design tokens. White is the default canvas, blue is primary, gold accents.
   ========================================================================== */
:root {
  /* Clean white canvas. */
  --bg:            #ffffff;
  --bg-deep:       #eef2fb;
  --paper:         #ffffff;   /* page background, alias for engine code */
  --paper-raised:  rgba(255, 255, 255, 0.82);   /* glass surface */
  --paper-solid:   #ffffff;   /* opaque raised, for print and inputs */
  --paper-sunken:  #f4f7fd;

  --ink:      #14213e;        /* deep blue ink, strong on white */
  --ink-soft: #46536e;
  --ink-dim:  #7b8598;

  /* Deep confident blue is the primary. */
  --blue:        #1c46c2;
  --blue-deep:   #12318a;
  --blue-soft:   #3a63dd;
  --blue-bright: #557ff0;

  /* Warm gold is the accent, reserved for emphasis. */
  --gold:        #b4832a;
  --gold-soft:   #9a6f1f;
  --gold-bright: #cf9d3d;
  --gold-glow:   rgba(180, 131, 42, 0.22);

  /* Soft violet used for the right side of the blue to purple ombre. */
  --violet:        #7c5cff;
  --violet-bright: #9d5cff;

  /* Interactive accent is blue. Gold is the quiet secondary. */
  --accent:      #1c46c2;
  --accent-soft: #3a63dd;
  --accent-ink:  #ffffff;     /* text on a blue fill */
  --accent-2:    #b4832a;     /* warm gold secondary */

  --line:     rgba(20, 40, 90, 0.14);
  --hairline: rgba(20, 40, 90, 0.08);
  --glass-brd: rgba(20, 45, 110, 0.12);

  --good: #1f7a44;
  --bad:  #b3261e;
  --warn: #b4832a;

  --shadow:      rgba(20, 40, 90, 0.13);
  --shadow-soft: rgba(20, 40, 90, 0.07);

  --serif: Georgia, "Iowan Old Style", Charter, "Palatino Linotype", "Book Antiqua", Palatino, serif;
  --sans:  "Segoe UI", -apple-system, "Helvetica Neue", "Inter", system-ui, Roboto, Arial, sans-serif;

  --maxw: 1160px;
  --radius: 16px;
  --radius-sm: 10px;
  --nav-h: 84px;

  color-scheme: light;
}

* { box-sizing: border-box; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
html { scroll-behavior: smooth; }

:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}

/* Static aurora wash. A fixed layer so it never repaints on scroll. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(1000px 720px at 108% 42%, color-mix(in srgb, var(--violet-bright) 15%, transparent), transparent 60%),
    radial-gradient(900px 640px at 96% 96%, color-mix(in srgb, var(--violet) 12%, transparent), transparent 62%),
    radial-gradient(1100px 620px at 20% -10%, color-mix(in srgb, var(--blue) 12%, transparent), transparent 60%),
    radial-gradient(900px 560px at 4% 2%, color-mix(in srgb, var(--gold) 9%, transparent), transparent 58%),
    linear-gradient(100deg, color-mix(in srgb, var(--blue) 5%, transparent) 0%, transparent 42%, color-mix(in srgb, var(--violet-bright) 7%, transparent) 100%),
    radial-gradient(1200px 820px at 50% 120%, color-mix(in srgb, var(--blue) 7%, transparent), transparent 66%);
  opacity: 0.85;
}
/* A faint wash to seat the tint softly into the canvas edges. */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(150% 130% at 50% 0%, transparent 62%, var(--bg-deep) 100%);
  opacity: 0.6;
}

h1, h2, h3, h4 { font-family: var(--serif); line-height: 1.16; font-weight: 600; letter-spacing: 0; color: var(--ink); }
h1 { font-size: clamp(2.4rem, 5.2vw, 3.6rem); }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.5rem); }
h3 { font-size: 1.4rem; }
a { color: var(--accent); text-underline-offset: 3px; }
p { margin: 0 0 1rem; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.6rem; }

.rule { border: none; border-top: 1px solid var(--hairline); margin: 1.8rem 0; }
.rule.thin { border-top: 1px solid var(--line); margin: 1.1rem 0 1.4rem; opacity: 0.75; }

/* ==========================================================================
   Glassmorphic floating pill navbar
   ========================================================================== */
.topbar {
  position: sticky; top: 0; z-index: 60;
  padding: 1.1rem 0 0.4rem;
  background: transparent;
}
.topbar .wrap {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  height: 58px; padding: 0 0.6rem 0 1.1rem;
  background: color-mix(in srgb, var(--paper-raised) 88%, transparent);
  border: 1px solid var(--glass-brd);
  border-radius: 999px;
  backdrop-filter: saturate(1.4) blur(18px);
  -webkit-backdrop-filter: saturate(1.4) blur(18px);
  box-shadow: 0 10px 40px var(--shadow), inset 0 1px 0 rgba(255,255,255,0.06);
}
/* QuantixMind wordmark lockup, matching the parent brand. */
.qmi-dot {
  border-radius: 50%; flex: none; display: inline-block;
  background: conic-gradient(from 0deg, #5B7CFF, #9D5CFF, #2EE6C8, #5B7CFF);
  animation: qmi-spin 6s linear infinite;
}
@keyframes qmi-spin { to { transform: rotate(360deg); } }
.qmi-word { font-family: var(--serif); font-weight: 400; letter-spacing: -0.01em; color: var(--blue); line-height: 1; white-space: nowrap; }
.qmi-word i { font-style: italic; font-weight: 400; }
.qmi-sub { font-family: var(--sans); font-weight: 700; text-transform: uppercase; letter-spacing: 0.2em; color: var(--accent); line-height: 1.1; }

/* Navbar brand lockup. */
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand .qmi-dot { width: 7px; height: 7px; }
.brand-text { display: flex; flex-direction: column; gap: 2px; }
.brand .qmi-word { font-size: 1.16rem; }
.brand .qmi-sub { font-size: 0.6rem; }

/* Stacked emblem lockup for hero, sidebar, syllabus, certificate, diploma. */
.qmi-lockup { display: inline-flex; flex-direction: column; align-items: center; gap: 0.4rem; text-align: center; }
.qmi-lockup-row { display: inline-flex; align-items: center; }
.qmi-emblem-ring {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 1.3rem 1.9rem; border-radius: 999px; border: 1px solid var(--blue);
  box-shadow: inset 0 0 0 4px color-mix(in srgb, var(--gold) 45%, transparent);
}
.navlinks { display: flex; gap: 1.2rem; align-items: center; }
.navlinks a:not(.btn) { text-decoration: none; color: var(--ink-soft); font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase; transition: color 0.15s; }
.navlinks a:not(.btn):hover { color: var(--accent); }

/* Command palette trigger */
.cmdk-btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: color-mix(in srgb, var(--ink) 6%, transparent);
  border: 1px solid var(--glass-brd); color: var(--ink-soft);
  border-radius: 999px; padding: 0.4rem 0.7rem 0.4rem 0.85rem; cursor: pointer;
  font-family: var(--sans); font-size: 0.76rem; letter-spacing: 0.04em; transition: border-color 0.15s, color 0.15s;
}
.cmdk-btn:hover { border-color: var(--accent); color: var(--ink); }
.cmdk-btn .kbd { font-size: 0.66rem; border: 1px solid var(--glass-brd); border-radius: 5px; padding: 0.05rem 0.35rem; color: var(--accent); letter-spacing: 0.06em; }

.btn {
  display: inline-block; background: linear-gradient(180deg, var(--blue-soft), var(--blue));
  color: var(--accent-ink);
  padding: 0.62rem 1.3rem; border-radius: 999px; text-decoration: none; font-weight: 700;
  border: none; cursor: pointer; font-size: 0.78rem; font-family: var(--sans);
  letter-spacing: 0.08em; text-transform: uppercase;
  transition: transform 0.15s, box-shadow 0.2s, filter 0.15s;
  box-shadow: 0 6px 20px color-mix(in srgb, var(--blue) 26%, transparent);
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.05); box-shadow: 0 10px 28px color-mix(in srgb, var(--blue) 34%, transparent); }
.btn.ghost { background: transparent; color: var(--accent); border: 1px solid var(--glass-brd); box-shadow: none; }
.btn.ghost:hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); }
.btn.small { padding: 0.36rem 0.8rem; font-size: 0.7rem; }
.navlinks .btn { color: var(--accent-ink); }

/* ==========================================================================
   Reading progress rail (course pages)
   ========================================================================== */
.readbar {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  z-index: 70; pointer-events: none;
  background: linear-gradient(90deg, var(--blue), var(--gold));
  box-shadow: 0 0 10px color-mix(in srgb, var(--blue) 30%, transparent);
  transition: width 0.1s linear;
}

/* ==========================================================================
   Institute hero
   ========================================================================== */
.hero { padding: 4.5rem 0 3rem; }
.hero-institute { padding: clamp(3rem, 8vw, 6rem) 0 4rem; position: relative; }
.hero-grid { display: grid; grid-template-columns: auto 1fr; gap: 2.6rem; align-items: center; position: relative; z-index: 1; }
.hero-crest { display: flex; justify-content: center; }
.eyebrow { font-size: 0.72rem; letter-spacing: 0.26em; text-transform: uppercase; color: var(--accent); font-weight: 700; margin-bottom: 1rem; }
.hero-institute h1 {
  max-width: 18ch; margin: 0 0 1.2rem;
  color: var(--blue-deep);
  background: linear-gradient(100deg, var(--blue-deep) 0%, var(--blue) 46%, var(--violet-bright) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
/* Fallback: if clip is unsupported the solid blue color above still shows. */
@supports not ((-webkit-background-clip: text) or (background-clip: text)) {
  .hero-institute h1 { background: none; -webkit-text-fill-color: currentColor; }
}
.hero .lede, .hero-institute .lede { font-size: clamp(1.1rem, 2vw, 1.32rem); max-width: 58ch; color: var(--ink-soft); font-family: var(--serif); font-style: italic; }
.hero .cta { margin-top: 2rem; display: flex; gap: 0.8rem; flex-wrap: wrap; }
.hero-rule { height: 2px; width: 80px; background: linear-gradient(90deg, var(--gold), transparent); margin: 0 0 1.6rem; }
.hero-stats { margin-top: 1.7rem; font-family: var(--serif); font-size: 1.02rem; color: var(--accent); letter-spacing: 0.02em; }

/* ==========================================================================
   Count up stat band
   ========================================================================== */
.statband { border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }
.statband .wrap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; padding-top: 2.4rem; padding-bottom: 2.4rem; }
.stat { text-align: center; padding: 0.6rem; }
.stat .stat-num { font-family: var(--serif); font-weight: 600; font-size: clamp(2.4rem, 5vw, 3.4rem); line-height: 1; color: var(--blue-deep); }
.stat .stat-label { margin-top: 0.5rem; font-size: 0.74rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-soft); }

/* ==========================================================================
   Sections
   ========================================================================== */
.section { padding: clamp(2.6rem, 6vw, 4.2rem) 0; }
.section + .section, .section.why-free { border-top: 1px solid var(--hairline); }
.section h2 { margin-top: 0; }
.kicker, .section .kicker { font-size: 0.72rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--accent); font-weight: 700; margin-bottom: 0.6rem; }

.two-col { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 3rem; align-items: start; }
.prose-max { max-width: 68ch; }

.pillars { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.1rem; margin-top: 1.6rem; }
.pillar {
  background: var(--paper-raised); border: 1px solid var(--glass-brd); border-radius: var(--radius); padding: 1.4rem;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  transition: transform 0.2s, border-color 0.2s;
}
.pillar:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: 0 12px 30px var(--shadow-soft); }
.pillar h4 { margin: 0 0 0.4rem; color: var(--accent); font-size: 1.05rem; letter-spacing: 0.01em; }
.pillar p { margin: 0; color: var(--ink-soft); font-size: 0.95rem; }

.why-free { position: relative; }
.freegrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; margin-top: 1.6rem; }
.freegrid div { padding: 1.3rem; background: var(--paper-raised); border: 1px solid var(--glass-brd); border-radius: var(--radius); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.freegrid h4 { margin: 0 0 0.4rem; color: var(--ink); }
.freegrid p { margin: 0; color: var(--ink-soft); font-size: 0.94rem; }

.callout {
  border: 1px solid var(--glass-brd); border-left: 3px solid var(--gold);
  background: var(--paper-raised); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  padding: 1.2rem 1.5rem; border-radius: 0 var(--radius) var(--radius) 0; margin: 1.8rem 0;
}
.callout p { margin: 0; }

footer.site { border-top: 1px solid var(--hairline); padding: 2.8rem 0; color: var(--ink-soft); font-size: 0.9rem; }
footer.site .footnote { display: inline-block; margin-top: 0.4rem; font-size: 0.8rem; opacity: 0.75; }
footer.site .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }
footer.site a { color: var(--ink-soft); }
footer.site a:hover { color: var(--accent); }

/* ==========================================================================
   Bento program grid
   ========================================================================== */
.schoolgrid { display: grid; grid-template-columns: repeat(3, 1fr); grid-auto-rows: 1fr; gap: 1.3rem; margin-top: 2rem; }
/* The founding program takes a wider bento tile. */
.schoolgrid > .school-card:first-child { grid-column: span 2; }

.school-card {
  position: relative; overflow: hidden;
  background: var(--paper-raised); border: 1px solid var(--glass-brd);
  border-radius: var(--radius); padding: 1.8rem 1.6rem 1.5rem; text-decoration: none;
  color: var(--ink); display: flex; flex-direction: column;
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 6px 20px var(--shadow-soft);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.25s;
}
.school-card::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none; opacity: 0;
  background: radial-gradient(420px 220px at 80% -10%, color-mix(in srgb, var(--blue) 12%, transparent), transparent 70%);
  transition: opacity 0.3s;
}
a.school-card:hover { border-color: var(--accent); transform: translateY(-5px); box-shadow: 0 22px 48px var(--shadow); }
a.school-card:hover::after { opacity: 1; }
.school-card .crest {
  width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center;
  font-size: 1.75rem; margin-bottom: 1rem; color: var(--accent);
  background: radial-gradient(circle at 50% 35%, color-mix(in srgb, var(--blue) 12%, transparent), transparent 70%);
  border: 1px solid var(--glass-brd); position: relative; z-index: 1;
}
.school-num { font-family: var(--serif); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); font-weight: 700; position: relative; z-index: 1; }
.school-card h3 { margin: 0.3rem 0 0.5rem; font-size: 1.4rem; position: relative; z-index: 1; }
.school-card p { margin: 0 0 1rem; color: var(--ink-soft); font-size: 0.95rem; flex: 1; position: relative; z-index: 1; }
.school-meta { font-size: 0.76rem; color: var(--ink-soft); letter-spacing: 0.04em; margin-bottom: 0.9rem; position: relative; z-index: 1; }
.school-foot { margin-top: auto; position: relative; z-index: 1; }
.school-prog { font-size: 0.76rem; color: var(--ink-soft); margin-top: 0.45rem; letter-spacing: 0.04em; }
.school-card.pending { opacity: 0.62; }
.school-card.pending .crest { color: var(--ink-dim); background: var(--paper-sunken); }
.status-pill {
  display: inline-block; font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-soft); border: 1px dashed var(--line); border-radius: 20px; padding: 0.22rem 0.75rem;
}

.pbar { height: 6px; background: color-mix(in srgb, var(--ink) 8%, transparent); border-radius: 6px; overflow: hidden; margin: 0.5rem 0 0.3rem; border: 1px solid var(--glass-brd); }
.pbar > span { display: block; height: 100%; background: linear-gradient(90deg, var(--gold-soft), var(--gold-bright)); width: 0%; transition: width 0.5s ease; box-shadow: 0 0 10px var(--gold-glow); }
.pbar-label { font-size: 0.76rem; color: var(--ink-soft); letter-spacing: 0.03em; }

.diploma-cta {
  margin-top: 2.4rem; display: flex; align-items: center; gap: 1.4rem; flex-wrap: wrap;
  background: var(--paper-raised); border: 1px solid var(--gold); border-radius: var(--radius);
  padding: 1.6rem 1.8rem; backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 0 40px var(--gold-glow);
}
.diploma-cta .crest {
  width: 58px; height: 58px; border-radius: 50%; display: grid; place-items: center;
  font-size: 1.6rem; background: linear-gradient(180deg, var(--gold-bright), var(--gold)); color: var(--accent-ink); flex: none;
}
.diploma-cta > div { flex: 1; min-width: 200px; }

/* ==========================================================================
   Scroll reveal
   ========================================================================== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s cubic-bezier(0.22,1,0.36,1), transform 0.7s cubic-bezier(0.22,1,0.36,1); will-change: opacity, transform; }
.reveal.in { opacity: 1; transform: none; }
.reveal-clip { clip-path: inset(0 100% 0 0); transition: clip-path 0.8s cubic-bezier(0.22,1,0.36,1); }
.reveal-clip.in { clip-path: inset(0 0 0 0); }
/* Stagger children of a revealed grid. */
.reveal.in > * { animation: rise 0.6s cubic-bezier(0.22,1,0.36,1) both; }
.reveal.in > *:nth-child(2) { animation-delay: 0.06s; }
.reveal.in > *:nth-child(3) { animation-delay: 0.12s; }
.reveal.in > *:nth-child(4) { animation-delay: 0.18s; }
.reveal.in > *:nth-child(5) { animation-delay: 0.24s; }
.reveal.in > *:nth-child(6) { animation-delay: 0.30s; }
@keyframes rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .reveal-clip { opacity: 1; transform: none; clip-path: none; transition: none; }
  .reveal.in > * { animation: none; }
  .qmi-dot { animation: none; }
}

/* ==========================================================================
   Command palette
   ========================================================================== */
.cmdk-overlay {
  position: fixed; inset: 0; z-index: 90; display: none;
  background: color-mix(in srgb, var(--bg-deep) 72%, transparent);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  padding: 12vh 1.2rem 2rem; justify-content: center; align-items: flex-start;
}
.cmdk-overlay.open { display: flex; }
.cmdk-panel {
  width: 100%; max-width: 640px; border-radius: var(--radius); overflow: hidden;
  background: color-mix(in srgb, var(--paper-solid) 92%, transparent);
  border: 1px solid var(--glass-brd);
  box-shadow: 0 30px 80px var(--shadow);
  backdrop-filter: blur(24px) saturate(1.4); -webkit-backdrop-filter: blur(24px) saturate(1.4);
  animation: cmdk-in 0.18s ease;
}
@keyframes cmdk-in { from { opacity: 0; transform: translateY(-10px) scale(0.985); } to { opacity: 1; transform: none; } }
.cmdk-input {
  width: 100%; border: none; outline: none; background: transparent; color: var(--ink);
  font-family: var(--sans); font-size: 1.1rem; padding: 1.15rem 1.3rem;
  border-bottom: 1px solid var(--hairline);
}
.cmdk-input::placeholder { color: var(--ink-dim); }
.cmdk-results { max-height: 52vh; overflow-y: auto; padding: 0.5rem; }
.cmdk-empty { padding: 1.6rem 1.3rem; color: var(--ink-soft); font-size: 0.95rem; }
.cmdk-item {
  display: flex; align-items: center; gap: 0.9rem; width: 100%; text-align: left;
  background: none; border: none; cursor: pointer; color: var(--ink);
  padding: 0.7rem 0.9rem; border-radius: var(--radius-sm); font-family: var(--sans);
}
.cmdk-item:hover, .cmdk-item.active { background: color-mix(in srgb, var(--accent) 10%, transparent); }
.cmdk-item .ci-icon { width: 30px; height: 30px; flex: none; border-radius: 8px; display: grid; place-items: center; font-size: 0.95rem; color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); border: 1px solid var(--glass-brd); }
.cmdk-item .ci-main { flex: 1; min-width: 0; }
.cmdk-item .ci-title { font-size: 0.96rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cmdk-item .ci-sub { font-size: 0.74rem; color: var(--ink-soft); letter-spacing: 0.04em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cmdk-item .ci-kind { font-size: 0.6rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); border: 1px solid var(--glass-brd); border-radius: 5px; padding: 0.15rem 0.45rem; flex: none; }
.cmdk-foot { display: flex; gap: 1.2rem; padding: 0.6rem 1.1rem; border-top: 1px solid var(--hairline); font-size: 0.7rem; color: var(--ink-dim); letter-spacing: 0.06em; }
.cmdk-foot .kbd { border: 1px solid var(--glass-brd); border-radius: 5px; padding: 0.05rem 0.35rem; color: var(--accent); margin-right: 0.3rem; }

/* ==========================================================================
   Learn app layout
   ========================================================================== */
.applayout { display: grid; grid-template-columns: 320px 1fr; min-height: calc(100vh - var(--nav-h)); }
.sidebar {
  border-right: 1px solid var(--hairline); background: color-mix(in srgb, var(--paper-raised) 70%, var(--bg));
  padding: 1.3rem 0.9rem 3rem; overflow-y: auto; max-height: calc(100vh - var(--nav-h));
  position: sticky; top: var(--nav-h);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.sidebar-home { display: block; font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); text-decoration: none; padding: 0 0.5rem 0.6rem; font-weight: 700; }
.sidebar-home:hover { color: var(--blue-deep); }
.sidebar-crest { display: flex; justify-content: center; padding: 0.4rem 0 1rem; color: var(--ink); border-bottom: 1px solid var(--hairline); margin-bottom: 0.8rem; }
.progress-summary { padding: 0 0.5rem 1rem; }
.continue-btn { display: block; width: calc(100% - 1rem); margin: 0 0.5rem 0.8rem; text-align: center; font-size: 0.85rem; padding: 0.5rem 0.6rem; }

.track-block { margin-bottom: 0.3rem; }
.track-block.final-block { margin-top: 0.6rem; padding-top: 0.6rem; border-top: 1px solid var(--hairline); }
.track-head {
  width: 100%; text-align: left; background: none; border: none; cursor: pointer;
  font-family: var(--serif); font-weight: 600; font-size: 1rem; color: var(--ink);
  padding: 0.55rem 0.6rem; border-radius: var(--radius-sm); display: flex; justify-content: space-between; align-items: center; gap: 0.5rem;
  transition: background 0.15s;
}
.track-head:hover { background: color-mix(in srgb, var(--accent) 8%, transparent); }
.track-head .tnum { color: var(--accent); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.06em; margin-right: 0.15rem; }
.track-head .tcaret { color: var(--ink-soft); }
.track-items { list-style: none; margin: 0 0 0.4rem; padding: 0 0 0 0.4rem; }
.track-items.collapsed { display: none; }
.track-items li { margin: 0; }

.navitem {
  width: 100%; text-align: left; background: none; border: none; cursor: pointer;
  color: var(--ink-soft); font-size: 0.87rem; font-family: var(--sans);
  padding: 0.42rem 0.6rem 0.42rem 1.3rem; border-radius: var(--radius-sm); display: flex; align-items: center; gap: 0.5rem;
  position: relative; line-height: 1.3; transition: background 0.15s, color 0.15s;
}
.navitem:hover { background: color-mix(in srgb, var(--accent) 8%, transparent); color: var(--ink); }
.navitem.active { background: color-mix(in srgb, var(--accent) 12%, transparent); color: var(--blue-deep); font-weight: 600; }
.navitem.syllabus-link { font-family: var(--serif); font-size: 0.95rem; color: var(--ink); margin-bottom: 0.3rem; }
.navitem .dot { width: 8px; height: 8px; border-radius: 50%; border: 1.5px solid var(--line); flex: none; transition: background 0.2s, border-color 0.2s; }
.navitem.visited .dot { background: var(--line); border-color: var(--accent); }
.navitem.done .dot { background: var(--gold); border-color: var(--gold); box-shadow: 0 0 7px var(--gold-glow); }
.navitem .navlabel { flex: 1; }
.navitem .kind { font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent); }
.kind-tag { font-size: 0.56rem; letter-spacing: 0.08em; font-weight: 700; color: var(--ink-soft); border: 1px solid var(--glass-brd); border-radius: 4px; padding: 0.05rem 0.28rem; flex: none; }
.kind-tag.kind-reading { color: var(--gold-soft); }
.kind-tag.kind-exercise { color: var(--accent-2); }
.kind-tag.kind-case { color: var(--gold); }

.content { padding: 2.6rem 2.8rem 5rem; max-width: 880px; }
.content .lesson-body { font-size: 1.08rem; }
.content .lesson-body p { margin-bottom: 1.15rem; }
.crumb { font-size: 0.72rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--accent); font-weight: 700; margin-bottom: 0.6rem; }
.readmeta { color: var(--ink-soft); font-size: 0.84rem; margin-bottom: 0.4rem; letter-spacing: 0.02em; }
.lesson-title-row { display: flex; align-items: flex-start; gap: 0.8rem; flex-wrap: wrap; }
.lesson-title-row h1 { margin: 0.1rem 0; font-size: clamp(1.9rem, 4vw, 2.6rem); }
.lesson-nav { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2.6rem; padding-top: 1.5rem; border-top: 1px solid var(--hairline); flex-wrap: wrap; }

.kind-badge {
  display: inline-block; font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase;
  font-weight: 700; padding: 0.24rem 0.55rem; border-radius: 5px; border: 1px solid var(--glass-brd);
  color: var(--ink-soft); background: color-mix(in srgb, var(--ink) 5%, transparent); white-space: nowrap;
}
.kind-badge.kind-reading { color: var(--gold); }
.kind-badge.kind-exercise { color: var(--accent-2); }
.kind-badge.kind-case { color: var(--gold-bright); }
.kind-badge.kind-exam { color: var(--gold); border-color: color-mix(in srgb, var(--gold) 45%, transparent); }

.lesson-body.dropcap > p:first-of-type::first-letter {
  float: left; font-family: var(--serif); font-weight: 600; font-size: 3.8rem;
  line-height: 0.8; padding: 0.3rem 0.6rem 0 0; color: var(--gold);
}

/* ---------- Syllabus ---------- */
.syllabus-head { display: flex; align-items: center; gap: 1.6rem; flex-wrap: wrap; }
.syllabus-head .qmi-lockup { flex: none; }
.syllabus-title { margin: 0; font-size: clamp(2rem, 4.5vw, 2.7rem); }
.syllabus-tagline { margin: 0.4rem 0 0; color: var(--ink-soft); font-family: var(--serif); font-style: italic; font-size: 1.15rem; }
.lede-serif { font-family: var(--serif); font-size: 1.18rem; color: var(--ink); max-width: 64ch; }
.program-line { font-family: var(--serif); font-style: italic; color: var(--accent); font-size: 1.06rem; letter-spacing: 0.02em; }
.syllabus-h2 { font-size: 1.55rem; letter-spacing: 0.01em; }
.syllabus-meta { display: flex; flex-wrap: wrap; gap: 0.7rem; margin: 1rem 0 0; }
.meta-chip { font-size: 0.82rem; color: var(--ink-soft); border: 1px solid var(--glass-brd); border-radius: 999px; padding: 0.35rem 0.9rem; background: var(--paper-raised); }
.meta-chip strong { color: var(--accent); font-family: var(--serif); }

.week-block { margin: 1.5rem 0; }
.week-head { display: flex; align-items: baseline; gap: 0.8rem; flex-wrap: wrap; border-bottom: 1px solid var(--hairline); padding-bottom: 0.5rem; }
.week-num { font-family: var(--serif); font-weight: 700; color: var(--accent); font-size: 0.8rem; letter-spacing: 0.15em; text-transform: uppercase; }
.week-name { margin: 0; font-size: 1.35rem; flex: 1; }
.week-hours { font-size: 0.8rem; color: var(--ink-soft); letter-spacing: 0.04em; }
.week-list { list-style: none; margin: 0.5rem 0 0; padding: 0; }
.week-list li { margin: 0; }
.syl-link {
  width: 100%; display: flex; align-items: center; gap: 0.7rem; text-align: left;
  background: none; border: none; border-bottom: 1px solid var(--hairline); cursor: pointer;
  padding: 0.62rem 0.3rem; color: var(--ink); font-family: var(--sans); font-size: 0.96rem;
  transition: background 0.15s, padding-left 0.15s;
}
.syl-link:last-child { border-bottom: none; }
.syl-link:hover { background: color-mix(in srgb, var(--accent) 7%, transparent); padding-left: 0.7rem; }
.syl-link.exam { font-family: var(--serif); }
.syl-lesson { flex: 1; }
.syl-min { font-size: 0.78rem; color: var(--ink-soft); white-space: nowrap; }
.syl-check { font-size: 0.66rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--good); font-weight: 700; }

.req-list { max-width: 64ch; color: var(--ink); }
.req-list li { margin-bottom: 0.5rem; }
.pace-note { background: var(--paper-raised); border: 1px solid var(--glass-brd); border-left: 3px solid var(--gold); padding: 1.1rem 1.4rem; border-radius: 0 var(--radius) var(--radius) 0; margin: 1.9rem 0; font-size: 0.94rem; color: var(--ink-soft); }
.pace-note strong { color: var(--ink); }

/* Copyable blocks */
.copyblock { background: var(--paper-sunken); border: 1px solid var(--glass-brd); border-radius: var(--radius); margin: 1.3rem 0; overflow: hidden; }
.copyblock header { display: flex; justify-content: space-between; align-items: center; padding: 0.6rem 0.9rem; border-bottom: 1px solid var(--hairline); background: color-mix(in srgb, var(--ink) 4%, transparent); }
.copyblock header span { font-weight: 600; font-size: 0.9rem; }
.copyblock pre { margin: 0; padding: 1rem; white-space: pre-wrap; font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 0.86rem; line-height: 1.5; color: var(--ink); overflow-x: auto; }

/* Cards, quizzes, drills */
.card { background: var(--paper-raised); border: 1px solid var(--glass-brd); border-radius: var(--radius); padding: 1.5rem; margin: 1.2rem 0; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.qopt, .drill-opt {
  display: block; width: 100%; text-align: left; background: color-mix(in srgb, var(--ink) 4%, transparent); border: 1px solid var(--glass-brd);
  border-radius: var(--radius-sm); padding: 0.75rem 0.95rem; margin: 0.5rem 0; cursor: pointer; font-size: 0.98rem;
  color: var(--ink); font-family: var(--sans); transition: border-color 0.12s, background 0.12s, transform 0.1s;
}
.qopt:hover, .drill-opt:hover { border-color: var(--accent); transform: translateX(2px); }
.qopt.chosen { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.qopt:disabled, .drill-opt:disabled { cursor: default; transform: none; }
.qopt.correct, .drill-opt.correct { border-color: var(--good); background: color-mix(in srgb, var(--good) 16%, transparent); }
.qopt.wrong, .drill-opt.wrong { border-color: var(--bad); background: color-mix(in srgb, var(--bad) 16%, transparent); }
.feedback { margin-top: 0.8rem; padding: 0.8rem 1rem; border-radius: var(--radius-sm); font-size: 0.94rem; border-left: 3px solid var(--gold); background: var(--paper-sunken); }
.feedback.good { border-left-color: var(--good); }
.feedback.bad { border-left-color: var(--bad); }
.feedback b { display: block; margin-bottom: 0.2rem; }

.progresspill { display: inline-block; font-size: 0.8rem; color: var(--ink-soft); margin-bottom: 0.5rem; letter-spacing: 0.03em; }
.scoreline { font-family: var(--serif); font-size: 1.5rem; margin: 0.5rem 0; color: var(--blue-deep); }

.attest-card { border-color: var(--gold); }
.attest { display: flex; align-items: center; gap: 0.6rem; font-family: var(--serif); font-size: 1.05rem; cursor: pointer; }
.attest input { width: 18px; height: 18px; accent-color: var(--gold); }

/* Inbox simulator */
.inbox { border: 1px solid var(--glass-brd); border-radius: var(--radius); overflow: hidden; margin: 1rem 0; }
.email-row { border-bottom: 1px solid var(--hairline); padding: 0.95rem 1.1rem; background: var(--paper-raised); }
.email-row:last-child { border-bottom: none; }
.email-row .from { font-weight: 600; font-size: 0.95rem; }
.email-row .subj { font-size: 0.95rem; }
.email-row .prev { color: var(--ink-soft); font-size: 0.88rem; margin: 0.3rem 0 0.6rem; }
.email-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; }
.mark-btn { border: 1px solid var(--glass-brd); background: color-mix(in srgb, var(--ink) 4%, transparent); color: var(--ink); border-radius: var(--radius-sm); padding: 0.35rem 0.85rem; cursor: pointer; font-size: 0.85rem; font-family: var(--sans); }
.mark-btn.sel-safe { background: color-mix(in srgb, var(--good) 22%, transparent); border-color: var(--good); }
.mark-btn.sel-sus { background: color-mix(in srgb, var(--bad) 22%, transparent); border-color: var(--bad); }
.email-verdict { font-size: 0.86rem; margin-top: 0.55rem; padding: 0.55rem 0.75rem; border-radius: var(--radius-sm); background: var(--paper-sunken); border-left: 3px solid var(--gold); }
.email-verdict.right { border-left-color: var(--good); }
.email-verdict.wrong { border-left-color: var(--bad); }

/* Confidence calibration */
.conf-controls { display: flex; align-items: center; gap: 0.8rem; margin: 0.7rem 0; flex-wrap: wrap; }
.conf-controls input[type=range] { flex: 1; min-width: 160px; accent-color: var(--gold); }
.conf-val { font-family: var(--serif); font-weight: 600; min-width: 3.5ch; color: var(--gold); }
.tf-btns { display: flex; gap: 0.5rem; }

/* ---------- Certificate and diploma ---------- */
.cert-wrap { max-width: 780px; margin: 1.6rem auto; }
.certificate {
  border: 1px solid var(--gold); border-radius: var(--radius); padding: 3rem 2.6rem 2.4rem; text-align: center;
  background: var(--paper-raised); position: relative; box-shadow: 0 20px 60px var(--shadow), 0 0 50px var(--gold-glow);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
}
.certificate::before {
  content: ""; position: absolute; inset: 10px; border: 1px solid var(--hairline); border-radius: calc(var(--radius) - 6px); pointer-events: none;
}
.certificate.diploma { border-width: 2px; }
.cert-seal { display: flex; justify-content: center; margin: 0 auto 1rem; color: var(--ink); }
.certificate .c-kicker { letter-spacing: 0.24em; text-transform: uppercase; font-size: 0.72rem; color: var(--gold); font-weight: 700; }
.certificate h2 { margin: 0.6rem 0; font-size: 2rem; }
.certificate .c-sub { color: var(--ink-soft); font-size: 0.95rem; margin: 0.3rem 0; }
.certificate .c-name { font-family: var(--serif); font-size: 2.3rem; font-style: italic; color: var(--gold-bright); margin: 0.8rem 0; border-bottom: 1px solid var(--hairline); display: inline-block; padding: 0 1.8rem 0.35rem; }
.c-signrow { display: flex; justify-content: center; gap: 3rem; margin: 1.8rem 0 0.6rem; flex-wrap: wrap; }
.c-sign { font-size: 0.78rem; color: var(--ink-soft); letter-spacing: 0.04em; }
.c-sigline { display: block; width: 180px; border-top: 1px solid var(--ink-soft); margin: 0 auto 0.4rem; }
.certificate .c-fine { color: var(--ink-soft); font-size: 0.82rem; max-width: 54ch; margin: 1.2rem auto 0; }
.cert-controls { display: flex; gap: 0.7rem; justify-content: center; margin-top: 1.5rem; flex-wrap: wrap; }
.cert-controls input { padding: 0.6rem 0.9rem; border: 1px solid var(--glass-brd); border-radius: var(--radius-sm); font-size: 1rem; background: var(--paper-solid); color: var(--ink); font-family: var(--sans); min-width: 240px; }

.note { font-size: 0.9rem; color: var(--ink-soft); }
.badge-done { color: var(--good); font-weight: 600; }
.mark-complete-row { margin-top: 2rem; display: flex; gap: 0.8rem; align-items: center; flex-wrap: wrap; }
.mark-hint { font-size: 0.85rem; color: var(--ink-soft); }
.lesson-provenance { margin-top: 2.2rem; padding-top: 1.2rem; border-top: 1px solid var(--line); font-size: 0.9rem; }
.lesson-provenance h3 { font-size: 0.95rem; margin-bottom: 0.5rem; }
.source-list { padding-left: 1.3rem; color: var(--ink-soft); }
.source-list li { margin-bottom: 0.3rem; }
.provenance-meta { color: var(--ink-dim); font-size: 0.82rem; margin-top: 0.8rem; }

.menu-toggle { display: none; background: color-mix(in srgb, var(--ink) 5%, transparent); border: 1px solid var(--glass-brd); border-radius: 999px; padding: 0.42rem 0.85rem; cursor: pointer; color: var(--ink); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; }

.scrim { display: none; }
.scrim.show { display: block; position: fixed; inset: var(--nav-h) 0 0 0; background: rgba(0,0,0,0.55); z-index: 55; backdrop-filter: blur(2px); }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1180px) and (min-width: 901px) {
  .schoolgrid { grid-template-columns: repeat(2, 1fr); }
  .schoolgrid > .school-card:first-child { grid-column: span 2; }
}
@media (max-width: 900px) {
  :root { --nav-h: 78px; }
  .two-col { grid-template-columns: 1fr; gap: 1.8rem; }
  .freegrid { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; }
  .schoolgrid { grid-template-columns: 1fr; }
  .schoolgrid > .school-card:first-child { grid-column: auto; }
  .statband .wrap { grid-template-columns: 1fr; gap: 1.6rem; }
  .hero-grid { grid-template-columns: 1fr; gap: 1.6rem; text-align: left; }
  .hero-crest { width: 120px; }
  .applayout { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed; left: 0; top: var(--nav-h); bottom: 0; width: 86%; max-width: 340px; z-index: 58;
    transform: translateX(-102%); transition: transform 0.24s; max-height: none; box-shadow: 0 0 40px var(--shadow);
  }
  .sidebar.open { transform: translateX(0); }
  .menu-toggle { display: inline-block; }
  .content { padding: 1.6rem 1.3rem 4rem; }
  .navlinks { gap: 0.7rem; }
  .navlinks a:not(.btn) { display: none; }
  .cmdk-btn .cmdk-label { display: none; }
}
@media (max-width: 560px) {
  .navlinks .btn { padding: 0.5rem 0.9rem; font-size: 0.7rem; }
  .cmdk-btn .kbd { display: none; }
}

/* ==========================================================================
   Checkpoints. A styled self check block after the lesson body.
   ========================================================================== */
.checkpoint {
  margin: 2.2rem 0 1rem; padding: 1.4rem 1.5rem 1.2rem;
  border: 1px solid var(--glass-brd); border-radius: var(--radius);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--blue) 5%, transparent), transparent 60%),
    var(--paper-raised);
  border-left: 3px solid var(--blue);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.ck-head { display: flex; align-items: baseline; gap: 0.8rem; flex-wrap: wrap; margin-bottom: 0.9rem; }
.ck-eyebrow { font-family: var(--serif); font-weight: 700; font-size: 0.74rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); }
.ck-note { font-size: 0.8rem; color: var(--ink-soft); }
.ck-q { margin: 0.9rem 0 1.1rem; }
.ck-q:last-child { margin-bottom: 0.2rem; }
.ck-prompt { font-weight: 600; font-size: 1.02rem; margin-bottom: 0.6rem; color: var(--ink); }
.ck-opts { display: grid; gap: 0.45rem; }
.ck-opt {
  text-align: left; background: color-mix(in srgb, var(--ink) 3%, transparent);
  border: 1px solid var(--glass-brd); border-radius: var(--radius-sm);
  padding: 0.6rem 0.85rem; cursor: pointer; font-size: 0.95rem; color: var(--ink);
  font-family: var(--sans); transition: border-color 0.12s, background 0.12s, transform 0.1s;
}
.ck-opt:hover:not(:disabled) { border-color: var(--accent); transform: translateX(2px); }
.ck-opt:disabled { cursor: default; }
.ck-opt.correct { border-color: var(--good); background: color-mix(in srgb, var(--good) 16%, transparent); }
.ck-opt.wrong { border-color: var(--bad); background: color-mix(in srgb, var(--bad) 15%, transparent); }
.ck-fb {
  margin-top: 0.6rem; padding: 0.7rem 0.95rem; border-radius: var(--radius-sm);
  font-size: 0.92rem; background: var(--paper-sunken); border-left: 3px solid var(--gold);
}
.ck-fb.good { border-left-color: var(--good); }
.ck-fb.bad { border-left-color: var(--bad); }
.ck-fb b { display: block; margin-bottom: 0.15rem; }

/* ==========================================================================
   Widget engine. One card per widget, in the house style.
   ========================================================================== */
.widgets { margin: 2rem 0 1rem; }
.wgt-sectionhead { margin-bottom: 0.4rem; }
.wgt-sectionhead .ck-eyebrow { font-family: var(--serif); font-weight: 700; font-size: 0.74rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--accent); }
.wgt {
  margin: 1rem 0; padding: 1.3rem 1.4rem; border: 1px solid var(--glass-brd);
  border-radius: var(--radius); background: var(--paper-raised);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 6px 20px var(--shadow-soft); position: relative; overflow: hidden;
}
.wgt::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: linear-gradient(180deg, var(--blue), var(--violet));
}
.wgt-head { display: flex; align-items: baseline; gap: 0.7rem; flex-wrap: wrap; margin-bottom: 0.8rem; }
.wgt-kind { font-family: var(--serif); font-weight: 700; font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--accent); }
.wgt-hint { font-size: 0.78rem; color: var(--ink-soft); }
.wgt-instruction { font-size: 0.96rem; color: var(--ink); margin: 0 0 0.9rem; }

/* reveal */
.rv-prompt { font-size: 1.04rem; color: var(--ink); margin-bottom: 0.9rem; }
.rv-answer { max-height: 0; opacity: 0; overflow: hidden; transition: max-height 0.35s ease, opacity 0.3s ease, margin 0.3s ease; }
.rv-answer.open { max-height: 620px; opacity: 1; margin-top: 0.9rem; }
.rv-answer-inner {
  padding: 0.9rem 1.1rem; border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--gold) 9%, transparent);
  border-left: 3px solid var(--gold); font-size: 0.97rem; color: var(--ink);
}

/* match */
.mt-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 0.7rem; }
.mt-col { display: grid; gap: 0.45rem; align-content: start; }
.mt-cell {
  text-align: left; background: color-mix(in srgb, var(--ink) 3%, transparent);
  border: 1px solid var(--glass-brd); border-radius: var(--radius-sm);
  padding: 0.6rem 0.8rem; cursor: pointer; font-size: 0.92rem; color: var(--ink);
  font-family: var(--sans); transition: border-color 0.12s, background 0.12s, transform 0.12s, box-shadow 0.2s;
}
.mt-cell:hover:not(.locked) { border-color: var(--accent); }
.mt-cell.sel { border-color: var(--blue); background: color-mix(in srgb, var(--blue) 12%, transparent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--blue) 22%, transparent); }
.mt-cell.locked { border-color: var(--good); background: color-mix(in srgb, var(--good) 14%, transparent); cursor: default; color: var(--ink-soft); }
.mt-cell.miss { border-color: var(--bad); background: color-mix(in srgb, var(--bad) 14%, transparent); animation: mt-shake 0.4s ease; }
@keyframes mt-shake { 0%,100% { transform: translateX(0); } 25% { transform: translateX(-4px); } 75% { transform: translateX(4px); } }
.mt-status { margin-top: 0.8rem; font-size: 0.84rem; color: var(--ink-soft); letter-spacing: 0.02em; transition: color 0.2s; }
.mt-complete .mt-status { color: var(--good); font-weight: 600; }

/* sort */
.sort-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.45rem; }
.sort-item {
  display: flex; align-items: center; gap: 0.7rem;
  background: color-mix(in srgb, var(--ink) 3%, transparent);
  border: 1px solid var(--glass-brd); border-radius: var(--radius-sm);
  padding: 0.55rem 0.7rem; font-size: 0.95rem; color: var(--ink);
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
}
.sort-item.dragging { opacity: 0.5; }
.sort-item.right { border-color: var(--good); background: color-mix(in srgb, var(--good) 13%, transparent); }
.sort-item.wrong { border-color: var(--bad); background: color-mix(in srgb, var(--bad) 11%, transparent); }
.sort-grip { color: var(--ink-dim); cursor: grab; letter-spacing: -1px; font-weight: 700; }
.sort-text { flex: 1; }
.sort-moves { display: flex; gap: 0.25rem; flex: none; }
.sort-moves button {
  width: 30px; height: 30px; border: 1px solid var(--glass-brd);
  background: var(--paper-solid); color: var(--accent); border-radius: 8px;
  cursor: pointer; font-size: 0.95rem; line-height: 1; transition: border-color 0.12s, background 0.12s;
}
.sort-moves button:hover:not(:disabled) { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); }
.sort-moves button:disabled { opacity: 0.35; cursor: default; }
.sort-actions { margin-top: 0.9rem; display: flex; gap: 0.7rem; align-items: center; flex-wrap: wrap; }
.sort-reset[hidden] { display: none; }
.sort-msg { font-size: 0.86rem; color: var(--ink-soft); }
.sort-msg.good { color: var(--good); font-weight: 600; }
.sort-msg.bad { color: var(--bad); }

/* scenario */
.sc-setup { font-size: 1.0rem; color: var(--ink); margin-bottom: 0.9rem; }
.sc-opts { display: grid; gap: 0.5rem; }
.sc-opt {
  text-align: left; background: color-mix(in srgb, var(--ink) 3%, transparent);
  border: 1px solid var(--glass-brd); border-radius: var(--radius-sm);
  padding: 0.65rem 0.9rem; cursor: pointer; font-size: 0.95rem; color: var(--ink);
  font-family: var(--sans); transition: border-color 0.12s, background 0.12s, transform 0.1s;
}
.sc-opt:hover { border-color: var(--accent); transform: translateX(2px); }
.sc-opt.active { box-shadow: 0 0 0 2px color-mix(in srgb, var(--blue) 20%, transparent); }
.sc-opt.best { border-color: var(--good); background: color-mix(in srgb, var(--good) 14%, transparent); }
.sc-opt.notbest { border-color: var(--warn); background: color-mix(in srgb, var(--warn) 12%, transparent); }
.sc-fb { margin-top: 0.85rem; padding: 0.75rem 1rem; border-radius: var(--radius-sm); font-size: 0.93rem; background: var(--paper-sunken); border-left: 3px solid var(--gold); }
.sc-fb.good { border-left-color: var(--good); }
.sc-fb.bad { border-left-color: var(--warn); }
.sc-fb b { display: block; margin-bottom: 0.15rem; }

/* flashcards */
.fc-stage { perspective: 1200px; margin: 0.3rem 0 0.9rem; }
.fc-card {
  display: block; width: 100%; min-height: 148px; border: none; background: none;
  padding: 0; cursor: pointer; font-family: inherit;
}
.fc-inner {
  position: relative; width: 100%; min-height: 148px; transform-style: preserve-3d;
  transition: transform 0.5s cubic-bezier(0.22,1,0.36,1);
}
.fc-card.flipped .fc-inner { transform: rotateY(180deg); }
.fc-face {
  position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden;
  display: flex; align-items: center; justify-content: center; text-align: center;
  padding: 1.2rem 1.4rem; border-radius: var(--radius); border: 1px solid var(--glass-brd);
  font-size: 1.06rem; color: var(--ink);
}
.fc-front { background: color-mix(in srgb, var(--blue) 7%, var(--paper-solid)); }
.fc-back { background: color-mix(in srgb, var(--gold) 9%, var(--paper-solid)); transform: rotateY(180deg); font-size: 0.98rem; }
.fc-controls { display: flex; align-items: center; justify-content: space-between; gap: 0.7rem; }
.fc-count { font-family: var(--serif); font-size: 0.9rem; color: var(--ink-soft); }

@media (prefers-reduced-motion: reduce) {
  .fc-inner { transition: none; }
  .rv-answer { transition: none; }
  .mt-cell.miss { animation: none; }
  .flourish { transition: none; }
}
@media (max-width: 560px) {
  .mt-cols { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Light mastery: points chip, streak, completion flourish
   ========================================================================== */
.mastery-row { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.9rem; }
.mastery-chip {
  display: inline-flex; align-items: baseline; gap: 0.3rem;
  font-size: 0.74rem; letter-spacing: 0.04em; color: var(--ink-soft);
  border: 1px solid var(--glass-brd); border-radius: 999px; padding: 0.28rem 0.7rem;
  background: color-mix(in srgb, var(--blue) 6%, transparent);
}
.mastery-chip .mc-num { font-family: var(--serif); font-weight: 700; font-size: 0.98rem; color: var(--blue-deep); }
.mastery-chip.streak { background: color-mix(in srgb, var(--gold) 12%, transparent); }
.mastery-chip.streak .mc-num { color: var(--gold-soft); }
.mastery-fine { font-size: 0.68rem; color: var(--ink-dim); margin-top: 0.45rem; letter-spacing: 0.01em; }
.school-points { color: var(--accent); font-weight: 700; margin-left: 0.5rem; }

.flourish {
  position: fixed; left: 50%; bottom: 2.2rem; z-index: 95;
  transform: translate(-50%, 24px); opacity: 0; pointer-events: none;
  display: flex; align-items: center; gap: 0.8rem;
  padding: 0.9rem 1.4rem 0.9rem 1rem; border-radius: 999px;
  background: color-mix(in srgb, var(--paper-solid) 94%, transparent);
  border: 1px solid var(--gold); box-shadow: 0 16px 44px var(--shadow), 0 0 40px var(--gold-glow);
  backdrop-filter: blur(18px) saturate(1.3); -webkit-backdrop-filter: blur(18px) saturate(1.3);
  transition: transform 0.5s cubic-bezier(0.22,1,0.36,1), opacity 0.5s ease;
}
.flourish.show { transform: translate(-50%, 0); opacity: 1; }
.flourish-mark { display: inline-flex; }
.flourish-mark .qmi-sub { display: none; }
.flourish-msg { font-family: var(--serif); font-weight: 600; font-size: 1rem; color: var(--blue-deep); white-space: nowrap; }

/* ==========================================================================
   Small-screen refinements. Desktop appearance is untouched.
   ========================================================================== */
@media (max-width: 900px) {
  img, svg, canvas, video { max-width: 100%; height: auto; }
  .hero-crest svg { width: 100%; height: auto; }
  .cert-controls input { min-width: 0; width: 100%; }
  .copyblock pre { font-size: 0.8rem; }
}
@media (max-width: 600px) {
  body { font-size: 16.5px; }
  h1 { font-size: clamp(1.9rem, 8vw, 2.4rem); }
  h2 { font-size: clamp(1.5rem, 6.4vw, 1.8rem); }
  .wrap { padding: 0 1.1rem; }
  .topbar .wrap { padding: 0 0.5rem 0 0.85rem; gap: 0.5rem; }
  .hero-institute { padding-top: 2.2rem; }
  .section { padding: 2.1rem 0; }
  .content { padding: 1.3rem 1rem 3.5rem; }
  .diploma-cta { padding: 1.2rem 1.1rem; }
  .certificate { padding: 1.8rem 1.1rem 1.6rem; }
  .certificate .c-name { font-size: 1.7rem; padding: 0 0.8rem 0.3rem; }
  .certificate h2 { font-size: 1.5rem; }
  .c-signrow { gap: 1.4rem; }
  .school-card { padding: 1.4rem 1.2rem 1.2rem; }
  .qmi-emblem-ring { padding: 0.9rem 1.3rem; }
  .cmdk-overlay { padding: 8vh 0.8rem 1.4rem; }
  .flourish { max-width: calc(100vw - 1.6rem); }
  .flourish-msg { white-space: normal; font-size: 0.92rem; }
  .lesson-nav .btn { width: 100%; text-align: center; }
  .fc-face { padding: 1rem; font-size: 0.98rem; }
}

/* ==========================================================================
   Print (certificates)
   ========================================================================== */
@media print {
  body::before, body::after { display: none !important; }
  .topbar, .sidebar, .scrim, .lesson-nav, .cert-controls, footer.site, .mark-complete-row, .readbar, .cmdk-overlay, .cmdk-btn, .flourish { display: none !important; }
  body { background: #fff; color: #000; }
  .certificate { box-shadow: none; border-color: #9a7b2e; background: #fff; color: #000; backdrop-filter: none; }
  .certificate .c-name { color: #7a5f1e; }
  .content, .cert-wrap { max-width: none; margin: 0; padding: 0; }
}

/* ==========================================================================
   institute-fx layer. Liquid glass, hero shader, liquid logo. Classes are
   added by institute-fx.js at runtime, so pages degrade cleanly without it.
   ========================================================================== */

/* Hero shader canvas sits behind the hero content, above the page aurora. */
.hero { position: relative; }
.fx-hero-canvas {
  position: absolute; inset: 0; z-index: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}
.fx-hero-shader > .wrap { position: relative; z-index: 1; }

/* Liquid glass topbar: refract the backdrop through SVG turbulence, then a
   pointer following specular band and a crisp inner edge light. */
.topbar .wrap.fx-glass {
  position: relative; overflow: hidden;
  backdrop-filter: saturate(1.5) blur(20px) url(#fxLiquidGlass);
  -webkit-backdrop-filter: saturate(1.5) blur(20px);
  box-shadow:
    0 12px 44px var(--shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.65),
    inset 0 -1px 0 rgba(20, 40, 90, 0.06);
}
.fx-glass-shine {
  position: absolute; inset: 0; border-radius: inherit;
  pointer-events: none;
  background:
    radial-gradient(120px 40px at var(--fx-mx, 30%) 0%, rgba(255, 255, 255, 0.8), transparent 70%),
    linear-gradient(105deg, transparent 30%, rgba(255, 255, 255, 0.35) 46%, transparent 60%);
  opacity: 0.7;
  transition: opacity 0.4s ease;
}

/* Liquid logo dot: a slow morphing blob in the brand ombre. */
.qmi-dot.fx-liquid-dot {
  width: 11px; height: 11px;
  background:
    radial-gradient(circle at 32% 30%, rgba(255, 255, 255, 0.85), transparent 42%),
    conic-gradient(from 0deg, var(--blue-soft), var(--violet-bright), var(--gold-bright), var(--blue-soft));
  animation: fx-blobmorph 7s ease-in-out infinite alternate, qmi-spin 9s linear infinite;
  box-shadow: 0 0 12px color-mix(in srgb, var(--violet) 35%, transparent);
}
@keyframes fx-blobmorph {
  0%   { border-radius: 58% 42% 55% 45% / 48% 60% 40% 52%; }
  33%  { border-radius: 45% 55% 40% 60% / 60% 42% 58% 40%; }
  66%  { border-radius: 60% 40% 58% 42% / 42% 56% 44% 58%; }
  100% { border-radius: 50% 50% 46% 54% / 54% 46% 56% 44%; }
}

/* Liquid crest: three soft metaball blobs drifting behind the hero emblem. */
.hero-crest.fx-liquid-crest { position: relative; }
.fx-blob {
  position: absolute; z-index: -1; pointer-events: none;
  filter: blur(18px); opacity: 0.5;
  animation: fx-blobmorph 9s ease-in-out infinite alternate, fx-drift 14s ease-in-out infinite alternate;
}
.fx-blob-1 { width: 130px; height: 120px; left: -14%; top: -8%;
  background: radial-gradient(circle at 35% 35%, var(--blue-bright), transparent 72%); }
.fx-blob-2 { width: 110px; height: 115px; right: -10%; top: 22%;
  background: radial-gradient(circle at 60% 40%, var(--violet-bright), transparent 72%);
  animation-delay: -3s, -5s; }
.fx-blob-3 { width: 95px; height: 90px; left: 22%; bottom: -12%;
  background: radial-gradient(circle at 45% 55%, var(--gold-bright), transparent 72%);
  animation-delay: -6s, -9s; }
@keyframes fx-drift {
  from { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(12px, -10px) scale(1.08); }
  to   { transform: translate(-10px, 8px) scale(0.95); }
}

@media (prefers-reduced-motion: reduce) {
  .fx-hero-canvas, .fx-blob { display: none; }
  .qmi-dot.fx-liquid-dot { animation: none; }
}
@media print {
  .fx-hero-canvas, .fx-blob, .fx-glass-shine { display: none !important; }
}