/* ══════════════════════════════════════════════════════════════════════════════
   MASTER MANIFESTOR — Design System
   Void Black · Iris Cyan · Iris Violet · Iris Magenta
   elite course cockpit · initiation · clarity · signal
   ══════════════════════════════════════════════════════════════════════════════ */

/* Design tokens kommen aus _studio_design_tokens.html. */
:root {
  --surface:     var(--color-surface);
  --surface-2:   color-mix(in srgb, var(--color-surface-raised) 90%, transparent);
  --surface-3:   color-mix(in srgb, var(--color-surface-raised) 55%, transparent);
  --border:      color-mix(in srgb, var(--color-text-primary) 8%, transparent);
  --border-md:   color-mix(in srgb, var(--color-text-primary) 15%, transparent);
  --border-hot:  color-mix(in srgb, var(--color-iris-cyan) 34%, transparent);
  --text-strong: var(--color-light);
  --text-main:   var(--color-text-primary);
  --text-soft:   var(--color-text-secondary);

  --signal:          var(--color-iris-cyan);
  --signal-dim:      color-mix(in srgb, var(--color-iris-cyan) 10%, transparent);
  --signal-glow:     color-mix(in srgb, var(--color-iris-cyan) 18%, transparent);
  --secondary:       var(--color-iris-violet);
  --secondary-dim:   color-mix(in srgb, var(--color-iris-violet) 10%, transparent);
  --danger:          var(--color-iris-magenta);

  --chrome-bg:       color-mix(in srgb, var(--color-void) 94%, transparent);
  --chrome-hover:    color-mix(in srgb, var(--color-iris-cyan) 7%, transparent);
  --adm-shadow:      0 24px 64px -48px rgba(0,0,0,.95);

  --sidebar-w: 262px;
  --radius: var(--radius-md);
  --radius-card: var(--radius-lg);
}

/* ── Reset ───────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0 }
html { scroll-behavior: smooth }
body {
  font-family: var(--font-body);
  background:
    radial-gradient(ellipse 80vw 60vw at 50% 26%, color-mix(in srgb, var(--color-iris-violet) 12%, transparent) 0%, color-mix(in srgb, var(--color-iris-cyan) 6%, transparent) 42%, transparent 72%),
    radial-gradient(ellipse 70% 45% at 84% 96%, color-mix(in srgb, var(--color-iris-magenta) 8%, transparent) 0%, transparent 62%),
    var(--color-ground);
  color: var(--text-main); min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none }
button { border: 0; background: none; font: inherit; color: inherit; cursor: pointer }
::selection { background: color-mix(in srgb, var(--color-iris-cyan) 28%, transparent); color: var(--color-light) }
::-webkit-scrollbar { width: 4px }
::-webkit-scrollbar-track { background: transparent }
::-webkit-scrollbar-thumb { background: color-mix(in srgb, var(--color-iris-cyan) 30%, transparent); border-radius: 2px }

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: .03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}
body::after { content: ""; display: none; }

/* ── Legacy background layer: disabled in favor of the tokenized iris field ───── */
.bg-pattern { display: none; }
.bg-pattern svg { width: 100%; height: 100%; }

/* ── Layout ──────────────────────────────────────────────────────────────────── */
.layout { display: flex; min-height: 100vh }

.layout.fullscreen-editor .sidebar { display: none }
.layout.fullscreen-editor .main { margin-left: 0 }
.layout.fullscreen-editor .editor-shell { grid-template-columns: 1fr; max-width: 820px; margin: 0 auto }
.layout.fullscreen-editor .content { padding: 2rem }

/* ── Sidebar ─────────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w); flex-shrink: 0;
  background: var(--chrome-bg);
  border-right: 1px solid var(--border);
  /* signature iris power line at top */
  border-top: 2px solid var(--color-iris-cyan);
  display: flex; flex-direction: column;
  position: fixed; inset: 0 auto 0 0; z-index: 10;
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}

.sidebar-logo {
  padding: 1.15rem 1.2rem 1rem;
  border-bottom: 1px solid var(--border);
}
.logo-link {
  display: flex;
  align-items: center;
  gap: .65rem;
  text-decoration: none;
}
.logo-mark { flex: 0 0 34px }
.logo-text { display: grid; gap: .04rem }
.logo-main {
  display: block;
  font-family: var(--font-logo);
  font-weight: 400;
  font-size: 1.15rem;
  letter-spacing: .12em;
  color: var(--color-iris-cyan);
  line-height: 1;
}
.logo-sub {
  display: block;
  font-family: var(--font-logo);
  font-weight: 400;
  font-size: .72rem;
  letter-spacing: .22em;
  color: var(--color-iris-violet);
  margin-top: .22rem;
}

/* ── Search ──────────────────────────────────────────────────────────────────── */
.sidebar-search {
  padding: .6rem .8rem .5rem; border-bottom: 1px solid var(--border); position: relative;
}
.search-wrap {
  display: flex; align-items: center; gap: .45rem;
  background: color-mix(in srgb, var(--color-text-primary) 4%, transparent); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .4rem .65rem;
  transition: border-color .18s;
}
.search-wrap:focus-within { border-color: var(--signal) }
.search-icon { font-size: 1rem; color: var(--color-text-secondary); line-height: 1 }
.search-input { flex: 1; background: none; border: none; outline: none; color: var(--text-main); font-size: .8rem; font-family: var(--font-body) }
.search-input::placeholder { color: var(--color-text-secondary) }

.search-results {
  position: absolute; left: .8rem; right: .8rem; top: calc(100% + 2px);
  background: var(--color-surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); z-index: 50; max-height: 55vh; overflow-y: auto;
  box-shadow: 0 16px 48px rgba(0,0,0,.8), 0 0 0 1px var(--border-hot);
}
.search-result { display: block; padding: .6rem .8rem; border-bottom: 1px solid var(--border); transition: background .12s }
.search-result:last-child { border-bottom: none }
.search-result:hover { background: var(--signal-dim) }
.search-result-title { font-size: .8rem; font-weight: 600; color: var(--text-strong) }
.search-result-meta { font-size: .74rem; color: var(--color-text-secondary); margin-top: .08rem; text-transform: uppercase; letter-spacing: .1em }
.search-result-snippet { font-size: .78rem; color: var(--text-soft); margin-top: .28rem; line-height: 1.4 }
.search-empty { padding: .85rem; font-size: .78rem; color: var(--color-text-secondary); text-align: center }

/* ── Nav ─────────────────────────────────────────────────────────────────────── */
.sidebar-nav { flex: 1; padding: .6rem .65rem .9rem; overflow-y: auto }

.nav-item {
  display: flex; align-items: center; gap: .55rem;
  min-height: 36px; padding: .42rem .65rem; margin: .04rem 0;
  font-size: .82rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  color: var(--text-soft); border-radius: var(--radius); border-left: 2px solid transparent;
  transition: color .15s, background .15s, border-color .15s;
}
.nav-item:hover { color: var(--text-main); background: var(--chrome-hover) }
.nav-item.active { color: var(--color-iris-cyan); background: var(--signal-dim); border-left-color: var(--color-iris-cyan) }
.nav-icon { width: .9rem; min-width: .9rem; text-align: center; font-size: .82rem }

.nav-divider { border: none; border-top: 1px solid var(--border); margin: .4rem .2rem }

.mm-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--border-md);
  background: color-mix(in srgb, var(--color-void) 72%, transparent);
  padding: 1.6rem clamp(1rem, 3vw, 2rem);
}

.mm-footer__grid {
  width: min(100%, 1200px);
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) repeat(3, minmax(120px, .75fr));
  gap: 1.2rem;
  align-items: start;
}

.mm-footer__grid--no-official {
  grid-template-columns: minmax(0, 1.25fr) repeat(2, minmax(120px, .75fr));
}

.mm-footer__brand {
  display: grid;
  gap: .45rem;
}

.mm-footer__brand strong {
  font-family: var(--font-logo);
  font-weight: 400;
  font-size: 1.05rem;
  letter-spacing: 0;
  text-transform: uppercase;
  background: var(--gradient-iris);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.mm-footer__brand span,
.mm-footer__nav span {
  color: var(--text-soft);
  font-size: .78rem;
}

.mm-footer__nav {
  display: grid;
  gap: .45rem;
}

.mm-footer__nav h5 {
  margin: 0 0 .15rem;
  font-family: var(--font-display);
  font-size: .62rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--color-iris-violet);
}

.mm-footer__nav a {
  color: var(--text-soft);
  font-size: .78rem;
}

.mm-footer__nav a:hover { color: var(--color-light); }

.nav-group { margin: .1rem 0 .22rem }
.nav-group summary {
  list-style: none; cursor: pointer; user-select: none;
  display: flex; align-items: center; gap: .5rem;
  padding: .36rem .65rem; border-radius: var(--radius);
  transition: background .12s;
}
.nav-group summary::-webkit-details-marker { display: none }
.nav-group summary:hover { background: var(--chrome-hover) }
.nav-mod-num {
  font-family: var(--font-mono); font-size: .68rem; font-weight: 500;
  color: var(--color-iris-violet); min-width: 1.5rem;
  background: var(--secondary-dim); border: 1px solid color-mix(in srgb, var(--color-iris-violet) 25%, transparent);
  border-radius: 3px; padding: .05rem .28rem; text-align: center; flex-shrink: 0;
}
.nav-mod-title {
  flex: 1; font-size: .80rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  color: var(--text-soft); transition: color .15s;
}
.nav-group[open] .nav-mod-title,
.nav-group summary:hover .nav-mod-title { color: var(--text-main) }
.nav-group summary::after { content: "›"; margin-left: auto; color: var(--color-text-secondary); font-size: .85rem; opacity: .5; transition: transform .15s }
.nav-group[open] summary::after { transform: rotate(90deg) }

.nav-group-items { display: grid; gap: .02rem; padding: .05rem 0 .2rem }

.nav-sub {
  display: flex; align-items: center; gap: .55rem;
  min-height: 30px; margin-left: 1rem;
  padding: .3rem .6rem .3rem .65rem;
  font-size: .78rem; font-weight: 400; color: color-mix(in srgb, var(--color-text-secondary) 50%, transparent);
  border-radius: var(--radius); border-left: 2px solid transparent;
  transition: color .12s, background .12s, border-color .12s;
}
.nav-sub:hover { color: var(--text-main); background: var(--chrome-hover) }
.nav-sub.active { color: var(--color-iris-cyan); background: var(--signal-dim); border-left-color: var(--color-iris-cyan) }
.nav-sub-dot { width: 4px; height: 4px; border-radius: 50%; background: currentColor; flex-shrink: 0; opacity: .5 }
.nav-sub.active .nav-sub-dot { opacity: 1 }

.nav-add-lesson {
  margin: .28rem 0 .05rem 1.5rem; display: block;
  font-size: .6rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--color-text-secondary); background: transparent;
  border: 1px dashed color-mix(in srgb, var(--color-text-primary) 10%, transparent); border-radius: var(--radius);
  padding: .26rem .5rem; cursor: pointer; text-align: left;
  transition: color .12s, border-color .12s;
}
.nav-add-lesson:hover { color: var(--color-iris-cyan); border-color: var(--border-hot) }

.sidebar-foot { padding: .6rem .65rem .8rem; border-top: 1px solid var(--border) }
.btn-new-module {
  width: 100%; min-height: 36px; border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center; gap: .45rem;
  border: 1px solid var(--border-md); background: transparent;
  color: var(--color-text-secondary); font-size: .78rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  transition: color .15s, border-color .15s, background .15s;
}
.btn-new-module:hover { color: var(--color-iris-cyan); border-color: var(--border-hot); background: var(--signal-dim) }

/* ── Main ────────────────────────────────────────────────────────────────────── */
.main { margin-left: var(--sidebar-w); flex: 1; display: flex; flex-direction: column; min-width: 0 }

.topbar {
  padding: .85rem 1.75rem; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  background: var(--chrome-bg); position: sticky; top: 0; z-index: 5;
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
.topbar-left {}
.topbar-title {
  font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; letter-spacing: .08em;
  color: var(--text-strong); display: flex; align-items: center; gap: .5rem;
  text-transform: uppercase;
}
.topbar-sub { font-size: .80rem; color: var(--color-text-secondary); margin-top: .1rem; letter-spacing: .06em }
.topbar-actions { display: flex; align-items: center; gap: .5rem }

.content { padding: 1.75rem 2rem; flex: 1; min-width: 0 }
.content-wrap { max-width: 1200px; margin: 0 auto }

/* ── Buttons ─────────────────────────────────────────────────────────────────── */
.adm-btn {
  display: inline-flex; align-items: center; gap: .42rem;
  padding: .72rem 1.35rem; font-family: var(--font-display); font-weight: 700; font-size: .75rem;
  letter-spacing: 0; text-transform: uppercase;
  border-radius: var(--radius); border: 1px solid transparent; cursor: pointer;
  transition: background .18s, border-color .18s, box-shadow .18s, transform .18s, color .18s;
  white-space: nowrap; text-decoration: none;
  position: relative;
  overflow: hidden;
}
.adm-btn-primary {
  background: var(--gradient-iris);
  color: var(--color-text-inverse);
  border-color: transparent;
  box-shadow: var(--glow-iris);
}
.adm-btn-primary:hover {
  box-shadow:
    0 0 24px color-mix(in srgb, var(--color-iris-cyan) 32%, transparent),
    0 0 72px color-mix(in srgb, var(--color-iris-violet) 22%, transparent),
    0 0 120px color-mix(in srgb, var(--color-iris-magenta) 12%, transparent);
  transform: translateY(-2px);
}
.adm-btn-secondary {
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--color-light) 4%, transparent),
    color-mix(in srgb, var(--color-light) 1.4%, transparent)
  );
  color: var(--color-light-dim);
  border-color: color-mix(in srgb, var(--color-light) 28%, transparent);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--color-light) 10%, transparent),
    0 16px 34px -28px rgba(0,0,0,.82);
}
.adm-btn-secondary::before {
  content: "";
  position: absolute;
  inset: 0 1rem auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--color-light) 48%, transparent), transparent);
  opacity: .86;
  pointer-events: none;
}
.adm-btn-secondary::after {
  content: "->";
  font-size: .78rem;
  opacity: .54;
  margin-left: .05rem;
}
.adm-btn-secondary:hover {
  color: var(--color-light);
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--color-iris-cyan) 9%, transparent),
    color-mix(in srgb, var(--color-iris-violet) 3%, transparent)
  );
  border-color: color-mix(in srgb, var(--color-iris-cyan) 44%, transparent);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--color-light) 16%, transparent),
    inset 0 -1px 0 rgba(0,0,0,.28),
    0 16px 34px -24px rgba(0,0,0,.82);
  transform: translateY(-2px);
}
.adm-btn-secondary:hover::before {
  background: linear-gradient(90deg, transparent, var(--color-iris-cyan), color-mix(in srgb, var(--color-iris-violet) 42%, transparent), transparent);
  opacity: 1;
}
.adm-btn-warning {
  background: transparent;
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 30%, transparent);
  font-size: .76rem;
}
.adm-btn-warning:hover { background: rgba(215,38,56,.1) }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: var(--radius);
  border: 1px solid var(--border); background: transparent;
  color: var(--color-text-secondary); font-size: .82rem; cursor: pointer;
  transition: background .12s, color .12s, border-color .12s;
}
.icon-btn:hover { background: var(--signal-dim); color: var(--color-iris-cyan); border-color: var(--border-hot) }

.icon-btn-xs {
  display: inline-flex; align-items: center; justify-content: center;
  width: 21px; height: 21px; border-radius: 4px;
  border: 1px solid var(--border); background: transparent;
  color: var(--color-text-secondary); font-size: .7rem; cursor: pointer; flex-shrink: 0;
  transition: background .12s, color .12s, border-color .12s;
}
.icon-btn-xs:hover { background: var(--signal-dim); color: var(--color-iris-cyan); border-color: var(--border-hot) }

.rename-inline-btn { opacity: 0; transition: opacity .15s }
.topbar-title:hover .rename-inline-btn { opacity: 1 }

/* ── Cards ───────────────────────────────────────────────────────────────────── */
.adm-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.3rem;
  box-shadow: var(--adm-shadow);
}
.adm-section-label {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  font-family: var(--font-display); font-size: .70rem; font-weight: 600;
  letter-spacing: 0; text-transform: uppercase;
  color: var(--color-iris-violet);
}
.adm-section-label::before {
  content: "";
  width: 2rem;
  height: 1px;
  background: var(--gradient-iris);
  flex: 0 0 auto;
}
.adm-breadcrumb {
  display: flex; align-items: center; gap: .38rem;
  font-size: .80rem; letter-spacing: .1em; text-transform: uppercase; color: var(--color-text-secondary);
}
.adm-breadcrumb a { color: var(--color-text-secondary); transition: color .12s }
.adm-breadcrumb a:hover { color: var(--color-iris-cyan) }
.adm-breadcrumb span { opacity: .3 }

/* ── Index: Module Grid ──────────────────────────────────────────────────────── */
.module-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1rem }

.module-card {
  display: flex; flex-direction: column; gap: .85rem;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.3rem;
  box-shadow: var(--adm-shadow);
  position: relative; overflow: hidden;
  transition: border-color .2s, box-shadow .2s;
}
/* iris signal line on left */
.module-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-iris-cyan) 0%, transparent 100%);
  opacity: 0; transition: opacity .2s;
}
.module-card:hover { border-color: var(--border-hot); box-shadow: 0 0 0 1px var(--border-hot), var(--adm-shadow) }
.module-card:hover::before { opacity: 1 }

.module-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: .65rem }
.module-meta { flex: 1; min-width: 0 }
.module-title-row { display: flex; align-items: center; gap: .38rem; margin-top: .25rem }
.module-card-title {
  font-family: var(--font-display); font-size: 1rem; font-weight: 600;
  color: var(--text-strong); line-height: 1.15; text-transform: uppercase; letter-spacing: .06em;
}
.module-controls { display: flex; align-items: center; gap: .28rem; flex-shrink: 0; padding-top: .12rem }
.lesson-count {
  font-family: var(--font-mono); font-size: .72rem; font-weight: 500;
  color: var(--color-text-secondary); padding: .12rem .4rem;
  border: 1px solid var(--border); border-radius: 999px; white-space: nowrap;
  background: var(--surface-2);
}

.lesson-list { list-style: none; flex: 1 }
.lesson-item {
  border-top: 1px solid var(--border);
  display: flex; align-items: center; gap: .35rem; padding: .28rem 0;
}
.lesson-item:first-child { border-top: none }
.lesson-move { display: flex; flex-direction: column; gap: .12rem; flex-shrink: 0; opacity: 0; transition: opacity .12s }
.lesson-item:hover .lesson-move { opacity: 1 }
.lesson-link {
  flex: 1; display: flex; align-items: center; gap: .55rem;
  font-size: .8rem; color: var(--text-soft); transition: color .12s; min-width: 0; padding: .12rem 0;
}
.lesson-link:hover { color: var(--color-iris-cyan) }
.lesson-num { font-family: var(--font-mono); font-size: .70rem; font-weight: 500; color: color-mix(in srgb, var(--color-text-secondary) 40%, transparent); min-width: 1.4rem; text-align: right; flex-shrink: 0 }
.lesson-title { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis }
.rename-lesson-btn { opacity: 0; transition: opacity .12s; flex-shrink: 0 }
.lesson-item:hover .rename-lesson-btn { opacity: 1 }

.module-card-foot { margin-top: auto }

.empty-hint { font-size: .78rem; color: var(--color-text-secondary); padding: .5rem 0 }
.empty-state { text-align: center; padding: 4rem 2rem }
.empty-state-icon { font-size: 2.5rem; color: var(--color-iris-cyan); margin-bottom: 1rem }
.empty-state h2 { font-family: var(--font-display); font-size: 1.4rem; color: var(--text-strong); margin-bottom: .5rem; text-transform: uppercase; letter-spacing: .06em }
.empty-state p { color: var(--color-text-secondary); margin-bottom: 1.5rem }

/* ── Lesson body ─────────────────────────────────────────────────────────────── */
.lesson-body {
  font-family: var(--font-body); font-size: .98rem; font-weight: 300;
  line-height: 1.82; color: var(--text-main);
}
.lesson-body h1 { font-family: var(--font-display); font-size: 1.7rem; color: var(--text-strong); margin-bottom: 1.2rem; line-height: 1; text-transform: uppercase; letter-spacing: .06em }
.lesson-body h2 { font-family: var(--font-display); font-size: 1.15rem; color: var(--text-strong); margin: 2rem 0 .65rem; padding-bottom: .38rem; border-bottom: 1px solid var(--border); text-transform: uppercase; letter-spacing: .05em }
.lesson-body h3 { font-family: var(--font-body); font-size: .82rem; font-weight: 500; color: var(--color-iris-cyan); margin: 1.5rem 0 .4rem; letter-spacing: .12em; text-transform: uppercase }
.lesson-body p { margin-bottom: .95rem }
.lesson-body ul, .lesson-body ol { margin: .5rem 0 1rem 1.5rem }
.lesson-body li { margin-bottom: .28rem }
.lesson-body blockquote {
  border-left: 3px solid var(--color-iris-cyan); padding: .55rem 1.1rem;
  color: var(--text-soft); margin: 1.2rem 0; font-style: italic;
  background: var(--signal-dim); border-radius: 0 var(--radius) var(--radius) 0;
}
.lesson-body strong { color: var(--text-strong); font-weight: 700 }
.lesson-body em { color: var(--color-text-secondary) }
.lesson-body a { color: var(--color-iris-cyan); text-decoration: underline; text-underline-offset: 2px }
.lesson-body code { background: var(--surface-2); padding: .1em .36em; border-radius: 3px; font-size: .86em; font-family: var(--font-mono); border: 1px solid var(--border); color: var(--color-iris-violet) }
.lesson-body pre { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; overflow-x: auto; margin-bottom: 1rem }
.lesson-body pre code { background: none; border: none; padding: 0; color: var(--text-main) }

.empty-lesson { text-align: center; padding: 3rem 2rem }
.empty-lesson p { color: var(--color-text-secondary); margin-bottom: 1.2rem }

.lesson-nav {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: 1.75rem; padding-top: 1.25rem; border-top: 1px solid var(--border);
}

.save-status { font-size: .76rem; color: var(--color-iris-cyan); font-weight: 600 }

/* ── Editor ──────────────────────────────────────────────────────────────────── */
.editor-shell { display: grid; grid-template-columns: minmax(0, 1fr) 264px; gap: 1rem; align-items: start }
.editor-main { min-width: 0 }
.editor-sidecar {
  position: sticky; top: calc(58px + 1rem);
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: .95rem;
  display: grid; gap: .75rem; box-shadow: var(--adm-shadow);
}
.editor-sidecar-kicker { font-family: var(--font-mono); font-size: .68rem; font-weight: 500; letter-spacing: .18em; text-transform: uppercase; color: var(--color-iris-cyan) }
.editor-sidecar h2 { font-family: var(--font-display); font-size: .95rem; color: var(--text-strong); line-height: 1.15; text-transform: uppercase; letter-spacing: .06em }
.editor-sidecar p { font-size: .74rem; color: var(--color-text-secondary); line-height: 1.5 }
.editor-format-actions { display: grid; gap: .3rem }

.fmt-btn {
  width: 100%; text-align: left;
  font-size: .74rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase;
  color: var(--text-soft); background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: .45rem .65rem; cursor: pointer;
  font-family: var(--font-body);
  transition: border-color .12s, color .12s, background .12s;
}
.fmt-btn:hover { border-color: var(--border-hot); color: var(--color-iris-cyan); background: var(--signal-dim) }

/* ── Quill: dark command cockpit ─────────────────────────────────────────────── */
.ql-toolbar.ql-snow {
  background: color-mix(in srgb, var(--color-surface) 70%, transparent); border: none !important;
  border-bottom: 1px solid var(--border) !important;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.ql-container.ql-snow { border: none !important }
.ql-editor {
  font-family: var(--font-body); font-weight: 300; font-size: .98rem;
  line-height: 1.82; color: var(--text-main); min-height: 520px; padding: 1.5rem;
  background: var(--surface);
}
.ql-editor p + p { margin-top: .75rem }
.ql-editor h1 { font-family: var(--font-display); font-size: 1.7rem; color: var(--text-strong); margin: .4rem 0 1rem; line-height: 1; text-transform: uppercase; letter-spacing: .06em }
.ql-editor h2 { font-family: var(--font-display); font-size: 1.15rem; color: var(--text-strong); margin: 1.75rem 0 .6rem; line-height: 1.1; text-transform: uppercase; letter-spacing: .05em }
.ql-editor h3 { font-family: var(--font-body); font-size: .82rem; font-weight: 500; color: var(--color-iris-cyan); margin: 1.4rem 0 .4rem; text-transform: uppercase; letter-spacing: .12em }
.ql-editor blockquote { border-left: 3px solid var(--color-iris-cyan); padding: .55rem 1.1rem; color: var(--text-soft); margin: 1.2rem 0; font-style: italic; background: var(--signal-dim) }
.ql-editor.ql-blank::before { color: color-mix(in srgb, var(--color-text-primary) 18%, transparent); font-style: italic }
.ql-toolbar .ql-stroke { stroke: var(--color-text-secondary) }
.ql-toolbar .ql-fill   { fill:   var(--color-text-secondary) }
.ql-toolbar button:hover .ql-stroke,
.ql-toolbar button.ql-active .ql-stroke { stroke: var(--color-iris-cyan) }
.ql-toolbar button:hover .ql-fill,
.ql-toolbar button.ql-active .ql-fill   { fill:   var(--color-iris-cyan) }
.ql-toolbar .ql-picker-label { color: var(--color-text-secondary) }
.ql-toolbar .ql-picker-options { background: var(--color-surface); border-color: var(--border) }
.ql-snow .ql-tooltip { background: var(--color-surface); border-color: var(--border); color: var(--text-strong) }
.ql-snow .ql-tooltip input[type=text] { background: var(--surface-2); border-color: var(--border); color: var(--text-strong) }
.ql-toolbar .ql-color-label,
.ql-toolbar .ql-background .ql-color-label { color: var(--color-text-secondary) }

/* ── Utilities ───────────────────────────────────────────────────────────────── */
.hidden { display: none !important }

/* ── Gold Mastery Badges ─────────────────────────────────────────────────────── */
.nav-sub.mastered .nav-sub-dot {
  background: var(--color-iris-magenta); opacity: 1;
  box-shadow: 0 0 4px color-mix(in srgb, var(--color-iris-magenta) 50%, transparent);
}
.mastery-star {
  font-size: .58rem; color: var(--color-iris-magenta); flex-shrink: 0;
  line-height: 1; margin-left: auto; opacity: .85;
}

.lesson-mastery-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--color-iris-magenta); flex-shrink: 0;
  box-shadow: 0 0 5px color-mix(in srgb, var(--color-iris-magenta) 55%, transparent); opacity: .9;
}
.lesson-item.mastered .lesson-num { color: var(--color-iris-magenta) }

.mastery-btn {
  width: 100%; display: flex; align-items: center; justify-content: center; gap: .45rem;
  padding: .55rem; font-size: .75rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  border: 1px solid color-mix(in srgb, var(--color-iris-magenta) 25%, transparent); border-radius: var(--radius);
  background: color-mix(in srgb, var(--color-iris-magenta) 8%, transparent); color: color-mix(in srgb, var(--color-iris-magenta) 60%, transparent);
  cursor: pointer; font-family: var(--font-body); margin-top: .35rem;
  transition: background .15s, border-color .15s, color .15s;
}
.mastery-btn:hover { background: color-mix(in srgb, var(--color-iris-magenta) 16%, transparent); border-color: var(--color-iris-magenta); color: var(--color-iris-magenta) }
.mastery-btn.mastered {
  background: color-mix(in srgb, var(--color-iris-magenta) 18%, transparent); border-color: var(--color-iris-magenta);
  color: var(--color-iris-magenta);
}
.mastery-btn.mastered::before { content: "✦ " }

/* ── Settings nav link ───────────────────────────────────────────────────────── */
.nav-settings { border-top: 1px solid var(--border); margin-top: .2rem; padding-top: .55rem }

/* ── Dashboard ───────────────────────────────────────────────────────────────── */
.stats-row {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: .75rem;
  margin-bottom: 1.5rem;
}
.stat-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1rem 1.25rem;
  box-shadow: var(--adm-shadow);
}
.stat-label {
  font-family: var(--font-mono); font-size: .68rem; font-weight: 500;
  letter-spacing: .18em; text-transform: uppercase; color: var(--color-text-secondary); margin-bottom: .3rem;
}
.stat-value {
  font-family: var(--font-display); font-size: 2.2rem; color: var(--text-strong); line-height: 1;
}
.stat-value.accent { color: var(--color-iris-cyan) }
.stat-value.gold   { color: var(--color-iris-magenta) }

.continue-card {
  background: var(--surface); border: 1px solid var(--border-hot);
  box-shadow: 0 0 0 1px var(--border-hot), var(--adm-shadow);
  border-radius: var(--radius-lg); padding: 1.15rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  margin-bottom: 1.5rem;
}
.continue-meta { flex: 1; min-width: 0 }
.continue-kicker {
  font-family: var(--font-mono); font-size: .68rem; font-weight: 500;
  letter-spacing: .16em; text-transform: uppercase; color: var(--color-iris-cyan); margin-bottom: .22rem;
}
.continue-title {
  font-family: var(--font-display); font-size: 1.15rem;
  color: var(--text-strong); text-transform: uppercase; letter-spacing: .05em;
}
.continue-sub { font-size: .78rem; color: var(--color-text-secondary); margin-top: .12rem }

.dash-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem;
}
.dash-module-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.1rem 1.2rem;
  box-shadow: var(--adm-shadow); display: flex; flex-direction: column; gap: .65rem;
  transition: border-color .2s, box-shadow .2s;
}
.dash-module-card:hover { border-color: var(--border-hot); box-shadow: 0 0 0 1px var(--border-hot), var(--adm-shadow) }
.dash-module-head { display: flex; align-items: center; justify-content: space-between }
.dash-module-num {
  font-family: var(--font-mono); font-size: .68rem; font-weight: 500;
  color: var(--color-iris-violet); background: var(--secondary-dim);
  border: 1px solid color-mix(in srgb, var(--color-iris-violet) 20%, transparent); border-radius: 3px;
  padding: .05rem .32rem; display: inline-block;
}
.dash-mastered-badge {
  font-family: var(--font-mono); font-size: .68rem; font-weight: 500;
  color: var(--color-iris-magenta); letter-spacing: .08em;
}
.dash-module-title {
  font-family: var(--font-display); font-size: 1.05rem; color: var(--text-strong);
  text-transform: uppercase; letter-spacing: .05em; line-height: 1.1;
}
.progress-bar-wrap {
  background: color-mix(in srgb, var(--color-text-primary) 6%, transparent); border-radius: 999px; height: 3px; overflow: hidden;
}
.progress-bar-fill {
  height: 100%; border-radius: 999px; background: var(--color-iris-cyan);
  transition: width .5s ease; min-width: 2px;
}
.progress-bar-fill.mastered { background: var(--color-iris-magenta) }
.dash-module-meta {
  font-size: .76rem; color: var(--color-text-secondary);
  display: flex; justify-content: space-between; align-items: center;
}
.dash-module-mastered { color: var(--color-iris-magenta); font-weight: 600 }

.dash-lesson-list { display: flex; flex-direction: column; gap: 0; margin-top: .25rem }
.dash-lesson-link {
  display: flex; align-items: center; gap: .5rem;
  padding: .26rem 0; font-size: .84rem; color: var(--text-soft);
  border-top: 1px solid var(--border); text-decoration: none;
  transition: color .12s;
}
.dash-lesson-link:first-child { border-top: none }
.dash-lesson-link:hover { color: var(--color-iris-cyan) }
.dash-lesson-num {
  font-family: var(--font-mono); font-size: .65rem; color: color-mix(in srgb, var(--color-text-secondary) 35%, transparent);
  min-width: 1.4rem; text-align: right; flex-shrink: 0;
}
.dash-lesson-title { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis }
.dash-lesson-more { font-size: .76rem; color: var(--color-text-secondary); padding: .22rem 0; border-top: 1px solid var(--border) }

/* ── Public landing page ────────────────────────────────────────────────────── */
.landing-body {
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(ellipse 90% 52% at 50% -12%, color-mix(in srgb, var(--color-iris-violet) 20%, transparent), transparent 64%),
    radial-gradient(ellipse 80% 42% at 82% 100%, color-mix(in srgb, var(--color-iris-cyan) 10%, transparent), transparent 66%),
    var(--color-void);
}
.landing-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
  opacity: .98;
}
.landing-bg svg {
  width: 100%;
  height: 100%;
}
.landing-body main {
  width: min(1180px, calc(100% - 3rem));
  margin: 0 auto;
  padding: 0 0 3rem;
}
.landing-nav {
  width: 100%;
  min-height: 72px;
  margin: 0;
  padding: 0 max(1.5rem, calc((100vw - 1180px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 20;
  background: linear-gradient(180deg, color-mix(in srgb, var(--color-void) 94%, transparent), color-mix(in srgb, var(--color-void) 66%, transparent));
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid color-mix(in srgb, var(--color-text-primary) 8%, transparent);
}
.landing-brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  min-height: 44px;
}
.landing-brand span:last-child {
  display: grid;
  gap: .04rem;
}
.landing-brand strong,
.landing-brand em {
  font-family: var(--font-logo);
  font-weight: 400;
  font-style: normal;
  text-transform: uppercase;
  letter-spacing: 0;
  line-height: .94;
}
.landing-brand strong {
  color: var(--color-iris-cyan);
  font-size: 1.24rem;
  letter-spacing: .18em;
}
.landing-brand em {
  color: var(--color-iris-violet);
  font-size: .72rem;
  letter-spacing: .22em;
  margin-top: .22rem;
}
.landing-logo-mark {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  filter: drop-shadow(0 0 16px color-mix(in srgb, var(--color-iris-cyan) 24%, transparent));
}
.landing-nav nav {
  display: flex;
  align-items: center;
  gap: .35rem;
}
.landing-nav nav a {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  padding: .36rem .65rem;
  border-radius: var(--radius);
  color: var(--text-soft);
  font-family: var(--font-display);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
  transition: color .15s, background .15s;
}
.landing-nav nav a:hover {
  color: var(--color-iris-cyan);
  background: color-mix(in srgb, var(--color-iris-cyan) 8%, transparent);
}

.landing-hero {
  min-height: min(700px, 72svh);
  display: flex;
  align-items: center;
  position: relative;
  isolation: isolate;
  padding: 4.2rem 0 3.6rem;
  border-bottom: 1px solid color-mix(in srgb, var(--color-text-primary) 8%, transparent);
}
.landing-hero::before {
  content: "";
  position: absolute;
  inset: 1.4rem -1.4rem 1.4rem;
  z-index: -1;
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--color-text-primary) 4.5%, transparent) 1px, transparent 1px),
    linear-gradient(180deg, color-mix(in srgb, var(--color-text-primary) 3.5%, transparent) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 78% 66% at 40% 42%, #000 0%, rgba(0,0,0,.75) 42%, transparent 78%);
  opacity: .48;
}
.landing-hero::after {
  content: "";
  position: absolute;
  top: 42%;
  left: 50%;
  z-index: -1;
  width: min(980px, 84vw);
  height: min(720px, 62vw);
  transform: translate(-50%, -50%);
  background:
    radial-gradient(ellipse at center,
      color-mix(in srgb, var(--color-iris-violet) 14%, transparent) 0%,
      color-mix(in srgb, var(--color-iris-cyan) 7%, transparent) 42%,
      transparent 72%);
  pointer-events: none;
  animation: landing-iris-pulse 8s var(--ease-smooth) infinite;
}
@keyframes landing-iris-pulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
  50% { transform: translate(-50%, -50%) scale(1.08); opacity: .72; }
}
.landing-hero-copy {
  position: relative;
  z-index: 1;
  max-width: 930px;
}
.landing-kicker {
  font-family: var(--font-display);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--color-iris-cyan);
  margin-bottom: .8rem;
}
.landing-hero h1 {
  font-family: var(--font-logo);
  font-size: var(--text-hero);
  font-weight: 400;
  line-height: .96;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--color-light);
  filter: drop-shadow(0 0 24px color-mix(in srgb, var(--color-iris-cyan) 14%, transparent));
}
.landing-hero h1 .iris-word {
  display: inline-block;
  background: var(--gradient-iris);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.landing-coming {
  width: fit-content;
  margin-top: .8rem;
  padding: .35rem .68rem;
  border: 1px solid transparent;
  background:
    linear-gradient(var(--color-void), var(--color-void)) padding-box,
    var(--gradient-iris-soft) border-box;
  color: var(--color-light);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.58rem;
  line-height: 1;
  letter-spacing: 0;
  text-transform: uppercase;
}
.landing-lede {
  max-width: 760px;
  margin-top: 1rem;
  color: color-mix(in srgb, var(--color-light) 76%, var(--color-text-secondary) 24%);
  font-size: 1.12rem;
  line-height: 1.66;
  font-weight: 400;
}
.landing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin-top: 1.45rem;
}
.landing-actions button,
.landing-close button {
  min-width: 0;
}

.landing-signal-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  gap: .5rem;
  width: auto;
  max-width: 100%;
  margin: 1rem 0;
}
.landing-signal-row span {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .38rem .7rem;
  border: 1px solid color-mix(in srgb, var(--color-text-primary) 12%, transparent);
  border-radius: 4px;
  background: color-mix(in srgb, var(--color-surface) 68%, transparent);
  color: var(--text-soft);
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: uppercase;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.landing-signal-row span:nth-child(2n) {
  border-color: color-mix(in srgb, var(--color-iris-cyan) 22%, transparent);
  color: var(--color-iris-cyan);
}
.landing-signal-row span:nth-child(3n) {
  border-color: color-mix(in srgb, var(--color-iris-violet) 22%, transparent);
  color: color-mix(in srgb, var(--color-iris-violet) 72%, var(--color-light) 28%);
}

.launch-panel,
.concept-section,
.academy-section,
.method-section,
.landing-close {
  margin-top: 1rem;
}
.launch-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.1rem;
  padding: 1.15rem 1.25rem;
  border: 1px solid color-mix(in srgb, var(--color-iris-cyan) 24%, transparent);
  border-radius: 8px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--color-iris-cyan) 10%, transparent), color-mix(in srgb, var(--color-surface) 76%, transparent) 46%, color-mix(in srgb, var(--color-iris-violet) 8%, transparent));
  box-shadow: var(--adm-shadow);
}
.launch-panel > div:first-child {
  max-width: 760px;
}
.launch-panel span,
.gate-topline span {
  font-family: var(--font-display);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--color-iris-violet);
}
.launch-panel h2,
.section-intro h2,
.academy-copy h2 {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4vw, 3rem);
  line-height: 1.18;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--text-strong);
  margin-top: .35rem;
}
.launch-panel p,
.concept-grid p,
.academy-copy p,
.method-grid p,
.landing-close p {
  color: var(--text-main);
  line-height: 1.68;
  font-size: .94rem;
}
.launch-panel p {
  margin-top: .45rem;
}
.launch-lock {
  min-width: 220px;
  min-height: 76px;
  display: grid;
  align-content: center;
  gap: .14rem;
  padding: .75rem .9rem;
  border: 1px solid color-mix(in srgb, var(--color-text-primary) 12%, transparent);
  border-radius: 6px;
  background: color-mix(in srgb, var(--color-void) 42%, transparent);
}
.launch-lock strong {
  font-family: var(--font-display);
  font-size: 1.14rem;
  line-height: 1;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--text-strong);
}
.launch-lock em {
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
  font-size: .68rem;
  font-style: normal;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: uppercase;
}
.launch-lock em a {
  color: var(--color-iris-cyan);
}

.concept-section,
.method-section {
  padding: 3.2rem 0 1rem;
}
.section-intro {
  max-width: 820px;
  margin-bottom: 1rem;
}
.concept-grid,
.method-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .85rem;
}
.concept-grid article,
.method-grid article {
  min-height: 212px;
  padding: 1.05rem;
  border: 1px solid color-mix(in srgb, var(--color-text-primary) 9%, transparent);
  border-radius: 8px;
  background: color-mix(in srgb, var(--color-surface) 76%, transparent);
  box-shadow: var(--adm-shadow);
  position: relative;
  overflow: hidden;
}
.concept-grid article::before,
.method-grid article::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 1.5px;
  background: var(--gradient-iris);
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-smooth);
}
.concept-grid article:hover::before,
.method-grid article:hover::before {
  opacity: 1;
}
.concept-grid h3,
.method-grid h3 {
  font-family: var(--font-display);
  font-size: 1.08rem;
  line-height: 1.24;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
  background: var(--gradient-iris);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-bottom: .55rem;
}
.concept-grid p,
.method-grid p {
  color: var(--color-text-secondary);
}

.academy-section {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(320px, .72fr);
  gap: 1rem;
  align-items: stretch;
  padding: 2rem 0;
  border-top: 1px solid color-mix(in srgb, var(--color-text-primary) 8%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--color-text-primary) 8%, transparent);
}
.academy-copy {
  display: grid;
  align-content: center;
  padding: .5rem 0;
}
.academy-copy p {
  max-width: 720px;
  margin-top: .75rem;
}
.academy-gate {
  position: relative;
  overflow: hidden;
  min-height: 390px;
  padding: 1.1rem;
  border: 1px solid color-mix(in srgb, var(--color-iris-cyan) 24%, transparent);
  border-radius: 8px;
  background:
    radial-gradient(circle at 50% 42%, color-mix(in srgb, var(--color-iris-cyan) 16%, transparent), transparent 34%),
    radial-gradient(circle at 64% 42%, color-mix(in srgb, var(--color-iris-violet) 14%, transparent), transparent 38%),
    color-mix(in srgb, var(--color-void) 58%, transparent);
  box-shadow: var(--adm-shadow);
}
.gate-topline {
  display: flex;
  justify-content: space-between;
  gap: .8rem;
  position: relative;
  z-index: 2;
}
.gate-topline strong {
  color: var(--color-iris-magenta);
  font-family: var(--font-mono);
  font-size: .68rem;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: uppercase;
}
.gate-orbit {
  position: absolute;
  inset: 52px 34px 96px;
}
.gate-orbit span {
  position: absolute;
  inset: 0;
  border: 1px solid color-mix(in srgb, var(--color-iris-cyan) 18%, transparent);
  border-radius: 50%;
  transform: rotate(-12deg);
  box-shadow: inset 0 0 34px color-mix(in srgb, var(--color-iris-cyan) 5%, transparent);
}
.gate-orbit span:nth-child(2) {
  inset: 34px 52px;
  border-color: color-mix(in srgb, var(--color-iris-violet) 22%, transparent);
  transform: rotate(18deg);
}
.gate-orbit span:nth-child(3) {
  inset: 74px 114px;
  border-color: color-mix(in srgb, var(--color-text-primary) 16%, transparent);
  transform: rotate(0deg);
}
.academy-gate ul {
  position: absolute;
  left: 1.1rem;
  right: 1.1rem;
  bottom: 1rem;
  display: grid;
  gap: .45rem;
  list-style: none;
}
.academy-gate li {
  padding: .5rem .6rem;
  border: 1px solid color-mix(in srgb, var(--color-text-primary) 9%, transparent);
  border-radius: 5px;
  background: color-mix(in srgb, var(--color-void) 56%, transparent);
  color: var(--text-main);
  font-size: .82rem;
}

.method-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.method-grid article {
  min-height: 228px;
}
.method-grid article span {
  display: inline-flex;
  margin-bottom: .6rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--color-iris-violet);
}

.landing-close {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem 0 0;
}
.landing-close > div {
  max-width: 760px;
}
.landing-close h2 {
  font-family: var(--font-display);
  font-size: 3.25rem;
  line-height: 1;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--color-iris-cyan);
  margin-top: .35rem;
}
.landing-close p {
  margin-top: .45rem;
}

.signal-modal-is-open { overflow: hidden; }
.signal-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: clamp(1rem, 3vw, 2rem);
  background: color-mix(in srgb, black 68%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.signal-modal {
  width: min(680px, 100%);
  max-height: 90vh;
  overflow: auto;
  border: 1px solid color-mix(in srgb, var(--color-iris-cyan) 28%, transparent);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 18% 0%, color-mix(in srgb, var(--color-iris-cyan) 16%, transparent), transparent 260px),
    radial-gradient(circle at 88% 18%, color-mix(in srgb, var(--color-iris-violet) 16%, transparent), transparent 260px),
    var(--color-void);
  box-shadow: 0 34px 120px rgba(0,0,0,.72), 0 0 0 1px color-mix(in srgb, var(--color-text-primary) 5%, transparent);
  padding: 1.1rem;
}
.signal-modal--thanks { width: min(440px, 100%); }
.signal-modal-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  padding-bottom: 1rem;
  border-bottom: 1px solid color-mix(in srgb, var(--color-text-primary) 8%, transparent);
}
.signal-modal-head p,
.signal-form label span {
  font-family: var(--font-display);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--color-iris-violet);
}
.signal-modal-head h2 {
  margin-top: .35rem;
  color: var(--color-light);
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.6rem);
  font-weight: 600;
  line-height: .95;
  letter-spacing: 0;
  text-transform: uppercase;
}
.signal-modal-close {
  width: 38px;
  height: 38px;
  display: inline-grid;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--color-text-primary) 12%, transparent);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-text-primary) 5%, transparent);
  color: var(--color-light);
  font-size: 1.05rem;
  flex: 0 0 auto;
}
.signal-form {
  display: grid;
  gap: .78rem;
  padding-top: 1rem;
}
.signal-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .78rem;
}
.signal-form label {
  display: grid;
  gap: .42rem;
}
.signal-form input,
.signal-form textarea {
  width: 100%;
  border: 1px solid color-mix(in srgb, var(--color-text-primary) 12%, transparent);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--color-surface) 70%, transparent);
  color: var(--color-light);
  padding: .78rem .85rem;
  outline: 0;
}
.signal-form textarea {
  min-height: 132px;
  resize: vertical;
}
.signal-form input::placeholder,
.signal-form textarea::placeholder {
  color: color-mix(in srgb, var(--color-text-secondary) 42%, transparent);
}
.signal-form input:focus,
.signal-form textarea:focus {
  border-color: color-mix(in srgb, var(--color-iris-cyan) 48%, transparent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-iris-cyan) 8%, transparent);
}
.signal-form-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: .75rem;
  margin-top: .25rem;
}
.signal-form-status {
  min-height: 1.2rem;
  color: var(--color-text-secondary);
  font-size: .84rem;
}
.signal-thanks-copy {
  margin: 1rem 0;
  color: var(--color-text-secondary);
  line-height: 1.55;
}
.signal-form button:disabled {
  cursor: progress;
  opacity: .66;
}
[hidden] { display: none !important; }

/* ── Lesson: mastery in view mode ───────────────────────────────────────────── */
.lesson-nav {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: .5rem;
}

/* ── Notes panel ─────────────────────────────────────────────────────────────── */
.notes-panel { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--border) }
.notes-panel-head {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: .6rem;
}
.notes-textarea {
  width: 100%; min-height: 110px; padding: .85rem 1rem;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text-main);
  font-family: var(--font-body); font-size: .88rem; line-height: 1.65;
  resize: vertical; outline: none; transition: border-color .15s;
}
.notes-textarea:focus { border-color: var(--border-md) }
.notes-textarea::placeholder { color: color-mix(in srgb, var(--color-text-secondary) 30%, transparent) }

@media (max-width: 960px) {
  .editor-shell { grid-template-columns: 1fr }
  .editor-sidecar { position: static; order: -1 }
  .content { padding: 1.25rem 1rem }
  .mm-footer__grid { grid-template-columns: 1fr; }
  .topbar { padding: .75rem 1rem }
  .module-grid { grid-template-columns: 1fr }
  .landing-body main { width: min(100% - 2rem, 1180px) }
  .landing-nav { padding-inline: 1rem }
  .landing-hero { min-height: 560px; padding: 3.6rem 0 3rem }
  .landing-hero h1 { font-size: 5.25rem }
  .concept-grid,
  .method-grid { grid-template-columns: repeat(2, minmax(0, 1fr)) }
  .academy-section { grid-template-columns: 1fr }
  .landing-close { align-items: flex-start; flex-direction: column }
}

@media (max-width: 760px) {
  .layout { display: block }
  .sidebar {
    position: relative;
    width: 100%;
    inset: auto;
    border-right: 0;
    min-height: auto;
    max-height: none;
  }
  .sidebar-nav { max-height: 260px }
  .bg-pattern { left: 0 }
  .main { margin-left: 0 }
  .topbar { position: sticky }
  .content-wrap { max-width: none }
  .dash-grid { grid-template-columns: 1fr }
  .landing-nav {
    align-items: center;
    justify-content: space-between;
    padding-block: .8rem;
    position: relative;
  }
  .landing-nav nav {
    width: auto;
    justify-content: flex-end;
    gap: .25rem;
  }
  .landing-nav nav a {
    flex: 0 0 auto;
    justify-content: center;
    padding-inline: .75rem;
  }
  .landing-hero {
    min-height: 500px;
    padding: 2.4rem 0 2.2rem;
  }
  .landing-hero h1 { font-size: 4.4rem }
  .landing-lede { font-size: 1rem }
  .launch-panel {
    align-items: stretch;
    flex-direction: column;
  }
  .launch-lock { min-width: 0 }
  .landing-signal-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: 100%;
    max-width: 560px;
  }
  .landing-signal-row span {
    width: 100%;
    text-align: center;
  }
}

@media (max-width: 560px) {
  .landing-body main { width: min(100% - 1.25rem, 1180px) }
  .landing-nav { padding-inline: .625rem }
  .landing-hero {
    min-height: 430px;
    padding: 2rem 0 1.8rem;
  }
  .landing-hero h1 { font-size: 3.35rem }
  .landing-coming { font-size: 1.22rem }
  .landing-actions {
    align-items: stretch;
    flex-direction: column;
  }
  .landing-actions .adm-btn,
  .landing-close .adm-btn { justify-content: center }
  .signal-form-grid { grid-template-columns: 1fr }
  .signal-form-actions { align-items: stretch; flex-direction: column; }
  .signal-form-actions .adm-btn { justify-content: center; width: 100%; }
  .concept-grid,
  .method-grid { grid-template-columns: 1fr }
  .launch-panel h2,
  .section-intro h2,
  .academy-copy h2 { font-size: 1.42rem }
  .academy-gate {
    min-height: 470px;
  }
  .gate-orbit {
    inset: 58px 12px 144px;
  }
  .academy-gate ul {
    gap: .38rem;
  }
  .landing-close h2 { font-size: 2.4rem }
}

@media (max-width: 380px) {
  .landing-hero h1 { font-size: 2.85rem }
  .landing-nav nav a { font-size: .68rem }
}

/* Shared article shell */
.mm-article {
  position: relative;
  z-index: 1;
  --mm-article-hero-padding-start: 96px;
  --mm-article-hero-padding-end: 56px;
  --mm-article-cover-overlap: 42px;
  --mm-article-body-gap: 42px;
}

.mm-article__hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: var(--mm-article-hero-padding-start) 0 var(--mm-article-hero-padding-end);
  background:
    radial-gradient(ellipse 130% 80% at 50% -5%, color-mix(in srgb, var(--color-iris-violet) 18%, transparent) 0%, color-mix(in srgb, var(--color-iris-violet) 6%, transparent) 45%, transparent 72%),
    radial-gradient(ellipse 70% 45% at 85% 95%, color-mix(in srgb, var(--color-iris-cyan) 7%, transparent) 0%, transparent 60%),
    var(--color-void);
}

.mm-article__container {
  width: min(1104px, calc(100% - 40px));
  margin: 0 auto;
}

.mm-article__eyebrow {
  margin: 0 0 18px;
  font: 600 0.72rem/1 var(--font-display);
  letter-spacing: 0;
  text-transform: uppercase;
  color: var(--color-iris-violet);
}

.mm-article__title {
  max-width: 820px;
  margin: 0;
  color: var(--color-light);
  font-family: var(--font-display);
  font-size: clamp(2.35rem, 4vw, 3.15rem);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: 0;
  text-transform: uppercase;
  text-shadow: none;
}

.mm-article__excerpt {
  max-width: 690px;
  margin: 24px 0 0;
  padding-left: 18px;
  border-left: 1px solid color-mix(in srgb, var(--color-iris-cyan) 58%, transparent);
  color: color-mix(in srgb, var(--color-light) 72%, var(--color-text-secondary) 28%);
  font-size: clamp(1.04rem, 1.35vw, 1.18rem);
  line-height: 1.58;
}

.mm-article__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 24px;
  color: color-mix(in srgb, var(--color-light) 60%, transparent);
  font: 500 0.7rem/1.4 var(--font-mono);
  letter-spacing: 0;
  text-transform: uppercase;
}

.mm-article__meta span + span {
  position: relative;
}

.mm-article__meta span + span::before {
  content: '';
  position: absolute;
  left: -11px;
  top: 50%;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--signal);
  transform: translateY(-50%);
}

.mm-article__share-top {
  display: flex;
  justify-content: flex-start;
  margin-top: 24px;
}

.mm-article__content {
  position: relative;
  display: flow-root;
  padding: 0 clamp(1.25rem, 5vw, 2.5rem) clamp(3rem, 6vw, 5rem);
}

.mm-article-cover {
  position: relative;
  z-index: 1;
  width: min(760px, calc(100% - 40px));
  margin: calc(var(--mm-article-cover-overlap) * -1) auto 0;
  border: 1px solid color-mix(in srgb, var(--color-iris-cyan) 28%, transparent);
  background: color-mix(in srgb, var(--color-text-primary) 4%, transparent);
  box-shadow: 0 0 24px color-mix(in srgb, var(--color-iris-cyan) 12%, transparent);
  overflow: hidden;
}

.mm-article-cover img {
  display: block;
  width: 100%;
  max-height: 440px;
  aspect-ratio: 16 / 8.4;
  object-fit: cover;
}

.mm-article__body {
  width: min(760px, 100%);
  margin: 0 auto;
  padding-top: var(--mm-article-body-gap);
  font-size: clamp(1.02rem, 1.2vw, 1.12rem);
  line-height: 1.72;
}

.mm-article__body p + p {
  margin-top: 1.1rem;
}

.mm-article__body img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.75rem auto;
}

.mm-article .launch-lock {
  margin-top: clamp(1.5rem, 3vw, 2rem);
  padding-top: clamp(1rem, 2vw, 1.25rem);
  border-top: 1px solid color-mix(in srgb, var(--color-text-primary) 14%, transparent);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

@media (max-width: 760px) {
  .mm-article {
    --mm-article-hero-padding-start: 72px;
    --mm-article-hero-padding-end: 48px;
    --mm-article-cover-overlap: 42px;
  }

  .mm-article__container {
    width: min(100% - 32px, 1104px);
  }

  .mm-article__title {
    font-size: clamp(2rem, 12vw, 2.75rem);
  }

  .mm-article__content {
    padding-right: 0;
    padding-left: 0;
  }

  .mm-article-cover,
  .mm-article__body {
    width: min(100% - 32px, 760px);
  }
}