/* === Вайбкодер дашборд === */
:root {
  --bg: #0B0B10;
  --bg-2: #101017;
  --surface: #14141C;
  --surface-2: #1A1A24;
  --surface-3: #20202B;
  --border: #24242E;
  --border-2: #2C2C38;
  --text: #E8E8EE;
  --text-2: #A4A4B2;
  --text-3: #6E6E7E;
  --accent: #7C5CFF;
  --accent-soft: rgba(124, 92, 255, 0.14);
  --accent-line: rgba(124, 92, 255, 0.3);
  --ok: oklch(0.74 0.13 165);
  --ok-soft: oklch(0.74 0.13 165 / 0.14);
  --warn: oklch(0.78 0.14 75);
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 18px;
}

[data-bg="pure"] {
  --bg: #050507;
  --bg-2: #08080C;
  --surface: #0E0E14;
  --surface-2: #14141C;
  --surface-3: #1A1A22;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); }
body {
  font-family: 'Geist', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-feature-settings: 'ss01', 'cv11';
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.005em;
}
.mono { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 0.86em; letter-spacing: 0; }
.dim { color: var(--text-3); }
button { font-family: inherit; cursor: pointer; }

/* === Shell === */
.shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(124,92,255,0.05), transparent 60%),
    var(--bg);
}
.density-compact { font-size: 14px; }

/* === Sidebar === */
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  border-right: 1px solid var(--border);
  background: var(--bg-2);
  display: flex;
  flex-direction: column;
  padding: 18px 14px;
  gap: 4px;
  overflow-y: auto;
}
.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 3px; }

.sb-brand {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 6px 14px;
  cursor: pointer;
}
.sb-mark {
  width: 30px; height: 30px;
  background: linear-gradient(135deg, var(--accent), oklch(from var(--accent) calc(l - 0.15) c h));
  border-radius: 8px;
  display: grid; place-items: center;
  position: relative;
  overflow: hidden;
}
.sb-mark::after {
  content: '';
  position: absolute; inset: 1px;
  border-radius: 7px;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.18));
  pointer-events: none;
}
.sb-mark-inner {
  width: 12px; height: 12px;
  background: #fff;
  clip-path: polygon(0 0, 100% 50%, 0 100%, 30% 50%);
}
.sb-brand-title { font-weight: 600; font-size: 14px; letter-spacing: -0.01em; }
.sb-brand-sub { font-size: 11px; color: var(--text-3); margin-top: -1px; }

.sb-section-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-3);
  padding: 12px 8px 6px;
}

.sb-home {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px;
  background: transparent; border: 0;
  border-radius: 8px;
  color: var(--text-2);
  text-align: left;
  width: 100%;
  font-size: 13px;
}
.sb-home:hover { background: var(--surface); color: var(--text); }
.sb-home.is-active { background: var(--surface-2); color: var(--text); }
.sb-home .sb-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}
.sb-kbd {
  margin-left: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-3);
  background: var(--surface-2);
  padding: 2px 5px;
  border-radius: 4px;
}

.sb-nav { display: flex; flex-direction: column; gap: 2px; }
.sb-mod {
  display: grid;
  grid-template-columns: 22px 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  background: transparent; border: 0;
  border-radius: 8px;
  color: var(--text-2);
  text-align: left;
  font-size: 13px;
  width: 100%;
}
.sb-mod:hover { background: var(--surface); color: var(--text); }
.sb-mod.is-active {
  background: linear-gradient(180deg, var(--accent-soft), transparent);
  color: var(--text);
  box-shadow: inset 2px 0 0 var(--accent);
}
.sb-mod-n {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-3);
}
.sb-mod.is-active .sb-mod-n { color: var(--accent); }
.sb-mod-title {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sb-mod-meta {
  display: flex; align-items: center; gap: 6px;
}
.sb-mod-pct {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-3);
}
.sb-pulse {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 var(--accent);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(124,92,255,0.5); }
  70% { box-shadow: 0 0 0 6px rgba(124,92,255,0); }
  100% { box-shadow: 0 0 0 0 rgba(124,92,255,0); }
}

.sb-spacer { flex: 1; min-height: 16px; }

.sb-progress {
  margin: 0 6px 12px;
  padding: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.sb-progress-row {
  display: flex; justify-content: space-between; align-items: baseline;
  margin-bottom: 8px;
}
.sb-progress-label { font-size: 12px; color: var(--text-2); }
.sb-progress-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 18px; font-weight: 500;
  color: var(--text);
}
.sb-bar {
  height: 4px;
  background: var(--surface-3);
  border-radius: 2px;
  overflow: hidden;
}
.sb-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), oklch(from var(--accent) calc(l + 0.1) c calc(h + 20)));
  border-radius: 2px;
  transition: width 0.4s ease;
}
.sb-progress-meta {
  display: flex; gap: 6px;
  margin-top: 8px;
  font-size: 11px;
  color: var(--text-3);
}

.sb-user {
  display: grid;
  grid-template-columns: 32px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 8px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
}
.sb-avatar {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, oklch(0.55 0.16 30), oklch(0.45 0.18 350));
  display: grid; place-items: center;
  font-size: 12px; font-weight: 600;
  color: #fff;
}
.sb-user-name { font-size: 13px; font-weight: 500; }
.sb-user-role { font-size: 10.5px; color: var(--text-3); margin-top: -1px; }
.sb-user-cog {
  width: 28px; height: 28px;
  background: transparent; border: 0;
  border-radius: 6px;
  color: var(--text-3);
  display: grid; place-items: center;
}
.sb-user-cog:hover { background: var(--surface-2); color: var(--text); }

/* === Content === */
.content {
  min-width: 0;
  padding: 32px 40px 60px;
}
.density-compact .content { padding: 24px 28px 40px; }

/* === Dashboard === */
.dash { max-width: 1280px; margin: 0 auto; display: flex; flex-direction: column; gap: 32px; }

.eyebrow {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-3);
}

.hero {
  display: grid;
  grid-template-columns: 1fr 520px;
  gap: 32px;
  align-items: end;
  padding-top: 8px;
}
.hero-greet { padding-bottom: 6px; }
.hero-title {
  font-size: 38px;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 12px 0 0;
  text-wrap: pretty;
}

.hero-card {
  position: relative;
  padding: 22px 24px;
  background:
    radial-gradient(120% 100% at 100% 0%, var(--accent-soft), transparent 50%),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.hero-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-line), transparent);
}
.hero-card-meta {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 14px;
}
.hero-card-module {
  font-size: 12px;
  color: var(--text-3);
  margin-bottom: 4px;
  font-family: 'JetBrains Mono', monospace;
}
.hero-card-title {
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.2;
  margin: 0 0 10px;
}
.hero-card-desc {
  color: var(--text-2);
  font-size: 14px;
  margin: 0 0 20px;
  text-wrap: pretty;
}
.hero-card-foot {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 12px;
}
.hero-card-stats {
  display: flex; gap: 8px; align-items: center;
  font-size: 12.5px;
  color: var(--text-2);
}

/* Chips */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px;
  padding: 4px 9px 4px 7px;
  border-radius: 999px;
  border: 1px solid var(--border-2);
  background: var(--surface-2);
  color: var(--text-2);
  font-family: 'JetBrains Mono', monospace;
  text-transform: lowercase;
  letter-spacing: 0.02em;
}
.chip-dot { width: 5px; height: 5px; border-radius: 50%; background: currentColor; }
.chip--accent { background: var(--accent-soft); border-color: var(--accent-line); color: var(--accent); }
.chip--ok { background: var(--ok-soft); border-color: oklch(0.74 0.13 165 / 0.3); color: var(--ok); }
.chip--mute { color: var(--text-3); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 16px;
  font-size: 13.5px;
  font-weight: 500;
  border-radius: 10px;
  border: 1px solid var(--border-2);
  background: var(--surface-2);
  color: var(--text);
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
}
.btn:hover { background: var(--surface-3); border-color: var(--border-2); }
.btn:active { transform: translateY(1px); }
.btn--primary {
  background: var(--accent);
  border-color: oklch(from var(--accent) calc(l - 0.05) c h);
  color: #fff;
  box-shadow: 0 0 0 1px oklch(from var(--accent) calc(l - 0.1) c h),
              0 8px 24px -8px var(--accent);
}
.btn--primary:hover {
  background: oklch(from var(--accent) calc(l + 0.04) c h);
}
.btn--ghost { background: transparent; }
.btn--ghost:hover { background: var(--surface); }
.btn--quiet { color: var(--text-3); border-color: transparent; }
.btn--quiet:hover { color: var(--text-2); }
.btn--lg { padding: 12px 20px; font-size: 14px; }
.btn--full { width: 100%; }

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.stat {
  padding: 18px 18px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex; flex-direction: column; gap: 8px;
  min-height: 130px;
}
.stat-label {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-3);
  font-family: 'JetBrains Mono', monospace;
}
.stat-value {
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1;
  display: flex; align-items: baseline; gap: 4px;
}
.stat-unit {
  font-size: 13px;
  color: var(--text-3);
  font-weight: 400;
  letter-spacing: 0;
  margin-left: 2px;
}
.stat-bar {
  height: 3px;
  background: var(--surface-3);
  border-radius: 2px;
  overflow: hidden;
  margin-top: auto;
}
.stat-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
}
.stat-foot { font-size: 11.5px; margin-top: auto; }
.streak {
  display: flex; gap: 3px;
  margin-top: auto;
}
.streak-dot {
  flex: 1;
  height: 22px;
  border-radius: 3px;
  background: var(--surface-3);
}
.streak-dot.is-on { background: var(--accent); opacity: 0.85; }
.streak-dot.is-today {
  background: transparent;
  border: 1px dashed var(--accent);
}

/* Modules */
.section-head {
  display: flex; justify-content: space-between; align-items: baseline;
  border-bottom: 1px solid var(--border);
  padding-bottom: 14px;
  margin-bottom: 4px;
}
.section-title {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0;
}
.section-meta { font-size: 12.5px; }

.modules-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.modules-grid--list { grid-template-columns: 1fr; }

.mc {
  position: relative;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex; flex-direction: column; gap: 16px;
  transition: border-color 0.15s, transform 0.15s;
}
.mc:hover { border-color: var(--border-2); }
.mc.is-active {
  border-color: var(--accent-line);
  background:
    radial-gradient(80% 60% at 0% 0%, var(--accent-soft), transparent 50%),
    var(--surface);
}
.mc.is-locked { opacity: 0.7; }

.mc-head {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  gap: 14px;
  align-items: start;
}
.mc-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--text-3);
  padding-top: 2px;
}
.mc.is-active .mc-num { color: var(--accent); }
.mc-title {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0 0 4px;
}
.mc-sum {
  font-size: 13px;
  color: var(--text-2);
  margin: 0;
  text-wrap: pretty;
}
.mc-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  text-transform: lowercase;
  letter-spacing: 0.04em;
  padding: 3px 7px;
  border-radius: 4px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid var(--accent-line);
  white-space: nowrap;
}
.mc-badge--done { background: var(--ok-soft); color: var(--ok); border-color: oklch(0.74 0.13 165 / 0.3); }

.mc-meter-track {
  display: flex; gap: 3px;
  margin-bottom: 8px;
}
.mc-tick {
  flex: 1;
  height: 4px;
  background: var(--surface-3);
  border-radius: 2px;
}
.mc-tick--done { background: var(--accent); }
.mc-tick--current {
  background: var(--accent);
  opacity: 0.5;
  position: relative;
  animation: pulse-tick 2s infinite;
}
@keyframes pulse-tick {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 0.9; }
}
.mc-meter-meta {
  display: flex; align-items: center; gap: 8px;
  font-size: 11.5px;
  color: var(--text-3);
}
.mc-meter-sep { color: var(--border-2); }
.mc-pct {
  margin-left: auto;
  font-family: 'JetBrains Mono', monospace;
  color: var(--text-2);
}

.mc-lessons {
  list-style: none;
  margin: 0; padding: 0;
  display: flex; flex-direction: column;
  gap: 1px;
  background: var(--bg-2);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.mc-lesson {
  display: grid;
  grid-template-columns: 18px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  background: var(--surface);
  font-size: 13px;
  color: var(--text-2);
  cursor: pointer;
  transition: background 0.1s;
}
.mc-lesson:hover { background: var(--surface-2); color: var(--text); }
.mc-lesson.is-locked { cursor: not-allowed; color: var(--text-3); }
.mc-lesson.is-locked:hover { background: var(--surface); color: var(--text-3); }
.mc-lesson.is-current {
  background: var(--accent-soft);
  color: var(--text);
}
.mc-lesson.is-current:hover { background: var(--accent-soft); }
.mc-lesson.is-done .mc-lesson-title { color: var(--text-3); text-decoration: line-through; text-decoration-color: var(--border-2); }
.mc-lesson-mins { color: var(--text-3); }

/* Status icons */
.st {
  display: inline-grid; place-items: center;
  width: 16px; height: 16px;
  border-radius: 50%;
  position: relative;
}
.st-done {
  background: var(--accent);
  color: #fff;
}
.st-current { color: var(--accent); }
.st-current .st-pulse {
  position: absolute; inset: 0;
  border-radius: 50%;
  border: 1px solid var(--accent);
  animation: ring 2s infinite;
}
.st-current .st-core {
  width: 7px; height: 7px;
  background: var(--accent);
  border-radius: 50%;
}
@keyframes ring {
  0% { transform: scale(0.8); opacity: 0.9; }
  100% { transform: scale(1.4); opacity: 0; }
}
.st-locked {
  color: var(--text-3);
  background: var(--surface-3);
}

.mc-cta {
  align-self: flex-start;
  background: transparent;
  border: 0;
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  padding: 4px 0;
}
.mc-cta:hover { color: oklch(from var(--accent) calc(l + 0.08) c h); }
.mc.is-locked .mc-cta { color: var(--text-3); }

/* List layout for module cards */
.mc--list { display: grid; grid-template-columns: 320px 1fr; gap: 24px; align-items: start; }
.mc--list .mc-head { grid-template-columns: 36px 1fr; }
.mc--list .mc-meter { grid-column: 1; }
.mc--list .mc-lessons { grid-column: 2; grid-row: 1 / 4; align-self: stretch; }
.mc--list .mc-cta { grid-column: 1; }

.dash-foot {
  display: flex; gap: 8px;
  font-size: 11.5px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

/* === Lesson === */
.lesson { max-width: 1280px; margin: 0 auto; }
.ls-breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 12.5px;
  color: var(--text-3);
  margin-bottom: 24px;
}
.ls-back {
  display: inline-flex; align-items: center; gap: 6px;
  background: transparent; border: 0;
  color: var(--text-2);
  font-size: 12.5px;
  padding: 4px 8px 4px 4px;
  border-radius: 6px;
}
.ls-back:hover { background: var(--surface); color: var(--text); }
.ls-crumb-sep { color: var(--border-2); }
.ls-crumb.is-active { color: var(--text); }

.ls-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
  align-items: start;
}

.ls-main { min-width: 0; display: flex; flex-direction: column; gap: 36px; }

.ls-head { display: flex; flex-direction: column; gap: 14px; padding-bottom: 8px; }
.ls-meta { display: flex; align-items: center; gap: 10px; }
.ls-title {
  font-size: 36px;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0;
  text-wrap: balance;
}
.ls-subtitle {
  font-size: 15px;
  color: var(--text-2);
  margin: 0;
  max-width: 60ch;
}

.ls-block { display: flex; flex-direction: column; gap: 12px; }
.ls-block-label {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-3);
}
.ls-block-label-row { display: flex; justify-content: space-between; align-items: center; }
.ls-prose {
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
  margin: 0;
  max-width: 68ch;
  text-wrap: pretty;
}
.ls-prose + .ls-prose { margin-top: 4px; }

.ls-task {
  position: relative;
  padding: 22px 24px 24px;
  background:
    radial-gradient(80% 60% at 0% 0%, var(--accent-soft), transparent 60%),
    var(--surface);
  border: 1px solid var(--accent-line);
  border-radius: var(--radius);
}
.ls-task-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 14px; }
.ls-task-label { font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); }
.ls-task-title { font-size: 17px; font-weight: 500; letter-spacing: -0.01em; }
.ls-task-list {
  list-style: none;
  margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 10px;
  counter-reset: step;
}
.ls-task-list li {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.55;
}
.ls-task-num { color: var(--text-3); padding-top: 1px; }

.ls-materials { display: flex; flex-direction: column; gap: 6px; }
.ls-mat {
  display: grid;
  grid-template-columns: 36px 1fr 16px;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, background 0.15s;
}
.ls-mat:hover { border-color: var(--border-2); background: var(--surface-2); }
.ls-mat-icon {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: var(--surface-3);
  display: grid; place-items: center;
  font-size: 16px;
  color: var(--text-2);
}
.ls-mat-icon--video { background: var(--accent-soft); color: var(--accent); }
.ls-mat-title { font-size: 14px; font-weight: 500; }
.ls-mat-sub { font-size: 11.5px; margin-top: 1px; }
.ls-mat-arrow { color: var(--text-3); }

.ls-notes {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  line-height: 1.55;
  resize: vertical;
  min-height: 140px;
  outline: none;
  transition: border-color 0.15s;
}
.ls-notes:focus { border-color: var(--accent-line); box-shadow: 0 0 0 3px var(--accent-soft); }
.ls-notes::placeholder { color: var(--text-3); }

.ls-saved {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px;
  color: var(--text-3);
  font-family: 'JetBrains Mono', monospace;
  text-transform: lowercase;
  opacity: 0;
  transition: opacity 0.2s;
}
.ls-saved.is-on { opacity: 1; }
.ls-saved-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ok);
}

.ls-notes-foot {
  display: flex; justify-content: space-between;
  font-size: 11px;
}

.ls-actions {
  display: flex; gap: 10px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

/* Side panel */
.ls-side { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 24px; }
.ls-side-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex; flex-direction: column; gap: 12px;
}
.ls-side-label {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-3);
}
.ls-side-mod {
  display: flex; align-items: center; gap: 10px;
  font-size: 14px; font-weight: 500;
}
.ls-side-lessons { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 1px; }
.ls-side-lesson {
  display: grid;
  grid-template-columns: 16px 22px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 8px 4px;
  font-size: 13px;
  color: var(--text-2);
  cursor: pointer;
  border-radius: 6px;
}
.ls-side-lesson:hover { background: var(--surface-2); color: var(--text); }
.ls-side-lesson.is-locked { cursor: not-allowed; color: var(--text-3); }
.ls-side-lesson.is-locked:hover { background: transparent; color: var(--text-3); }
.ls-side-lesson.is-here {
  background: var(--accent-soft);
  color: var(--text);
}
.ls-side-lesson.is-here:hover { background: var(--accent-soft); }
.ls-side-num { color: var(--text-3); }

.ls-nav-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.ls-nav-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-align: left;
  color: var(--text);
  min-height: 56px;
}
.ls-nav-btn:hover:not(:disabled) { border-color: var(--border-2); background: var(--surface-2); }
.ls-nav-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.ls-nav-arrow { font-size: 14px; color: var(--text-3); }
.ls-nav-text { display: flex; flex-direction: column; min-width: 0; flex: 1; }
.ls-nav-text--right { text-align: right; }
.ls-nav-label { font-size: 10px; text-transform: uppercase; letter-spacing: 0.06em; }
.ls-nav-title {
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ls-help-title { font-size: 14px; font-weight: 500; }
.ls-help-body { font-size: 12.5px; color: var(--text-2); margin: 0; line-height: 1.5; }

/* Compact density tweaks */
.density-compact .stat { padding: 14px; min-height: 110px; }
.density-compact .stat-value { font-size: 26px; }
.density-compact .mc { padding: 16px; gap: 12px; }
.density-compact .hero-title { font-size: 32px; }
.density-compact .ls-title { font-size: 30px; }

/* Responsive guard */
@media (max-width: 1100px) {
  .hero { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .modules-grid { grid-template-columns: 1fr; }
  .ls-grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: relative; height: auto; }
  .stats { grid-template-columns: 1fr 1fr; }
}

/* ── Quiz ── */
.ls-quiz { border: 1px solid rgba(255,255,255,.08); border-radius: 12px; padding: 24px; }
.quiz-progress { margin-bottom: 12px; font-size: 12px; }
.quiz-question { font-size: 16px; font-weight: 500; line-height: 1.5; margin-bottom: 16px; color: var(--text); }
.quiz-input { min-height: 80px; margin-bottom: 12px; }
.quiz-feedback { border-radius: 10px; padding: 16px; margin-top: 12px; display: flex; flex-direction: column; gap: 10px; }
.quiz-feedback--ok { background: rgba(34,195,154,.1); border: 1px solid rgba(34,195,154,.25); }
.quiz-feedback--fail { background: rgba(242,107,122,.1); border: 1px solid rgba(242,107,122,.25); }
.quiz-feedback-score { font-size: 12px; font-family: var(--mono); opacity: .7; }
.quiz-feedback-text { font-size: 14px; line-height: 1.6; }
.quiz-summary { display: flex; flex-direction: column; gap: 20px; }
.quiz-score { display: flex; align-items: baseline; gap: 4px; }
.quiz-score-num { font-size: 48px; font-weight: 600; }
.quiz-score-label { font-size: 20px; opacity: .5; }
.quiz-score--pass .quiz-score-num { color: #22c39a; }
.quiz-score--fail .quiz-score-num { color: #f26b7a; }
.quiz-summary-title { font-size: 18px; font-weight: 500; }
.quiz-answers { display: flex; flex-direction: column; gap: 12px; }
.quiz-answer-item { padding: 14px; border-radius: 10px; }
.quiz-answer-item--ok { background: rgba(34,195,154,.07); border: 1px solid rgba(34,195,154,.2); }
.quiz-answer-item--fail { background: rgba(242,107,122,.07); border: 1px solid rgba(242,107,122,.2); }
.quiz-answer-q { font-size: 13px; font-weight: 500; margin-bottom: 6px; opacity: .8; }
.quiz-answer-fb { font-size: 13px; line-height: 1.6; }

/* ── Chat ── */
.ls-chat { display: flex; flex-direction: column; gap: 12px; }
.chat-messages { display: flex; flex-direction: column; gap: 10px; max-height: 320px; overflow-y: auto; }
.chat-empty { font-size: 13px; line-height: 1.5; }
.chat-msg { font-size: 13px; line-height: 1.6; padding: 10px 14px; border-radius: 10px; max-width: 90%; white-space: pre-wrap; }
.chat-msg--user { background: var(--accent); color: #fff; align-self: flex-end; border-radius: 10px 10px 2px 10px; }
.chat-msg--ai { background: rgba(255,255,255,.06); align-self: flex-start; border-radius: 10px 10px 10px 2px; }
.chat-msg--loading { opacity: .5; }
.chat-input-row { display: flex; gap: 8px; align-items: flex-end; }
.chat-input { flex: 1; resize: none; min-height: 44px; }
.chat-send { padding: 10px 16px; flex-shrink: 0; }