/* Mạng xã hội học tập — comments, feed, teacher digest, mascot page.
   Built on core tokens (tokens.css); no new colour vars except per-element
   --ring / --rank / --swatch / --mascot passed inline from Django. */

/* ---------- Avatar ---------- */
.mascot-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: 50%;
  object-fit: cover;
  background: radial-gradient(circle at 50% 38%, #ffffff 0%, #eef2fb 70%);
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--ring, var(--border-soft));
  color: var(--text-muted);
  font-weight: 700;
}
.mascot-avatar--teacher {
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
  color: #fff;
  font-family: var(--font-display);
  letter-spacing: 0.02em;
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--gold-400);
}
/* The <img> variant is sized via --ava. The !important beats the global
   `img { height: auto !important }` (core/effects.css) which otherwise lets
   flex rows with align-items:stretch (e.g. the teacher digest) pull the
   avatar into an oval. */
img.mascot-avatar {
  display: block;
  flex: none;
  width: var(--ava, 40px) !important;
  height: var(--ava, 40px) !important;
}

.rank-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.05rem 0.5rem;
  border-radius: var(--radius-pill);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--rank, var(--text-muted));
  background: color-mix(in srgb, var(--rank, #94a3b8) 12%, #fff);
  border: 1px solid color-mix(in srgb, var(--rank, #94a3b8) 30%, #fff);
  white-space: nowrap;
}
.rank-chip--teacher {
  --rank: var(--primary-700);
}

/* ---------- Comment panel (exercise page) ---------- */
.cmt-mount {
  margin-top: var(--sp-8);
  scroll-margin-top: 1rem;
}
.cmt-mount-loading {
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
}
.cmt-panel {
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: clamp(1rem, 3vw, 1.75rem);
}
.cmt-panel-head { margin-bottom: var(--sp-4); }
.cmt-title {
  font-family: var(--font-display);
  font-size: var(--fs-h2);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-color);
}
.cmt-count {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary-700);
  background: var(--primary-50);
  border-radius: var(--radius-pill);
  padding: 0.1rem 0.6rem;
}
.cmt-sub { margin: 0.35rem 0 0; color: var(--text-muted); font-size: var(--fs-sm); }

.cmt-error {
  background: #fff1f2;
  color: #9f1239;
  border: 1px solid #fecdd3;
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.9rem;
  margin-bottom: var(--sp-4);
  font-weight: 600;
}

.cmt-composer {
  border: 1px solid var(--border-soft);
  border-radius: var(--border-radius);
  padding: var(--sp-3);
  background: linear-gradient(180deg, #fbfcff, #f6f8fd);
  margin-bottom: var(--sp-6);
}
.cmt-composer-row { display: flex; gap: var(--sp-3); align-items: flex-start; }
.cmt-composer textarea,
.cmt-reply-form textarea {
  flex: 1;
  width: 100%;
  resize: vertical;
  min-height: 3.2rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.8rem;
  font: inherit;
  color: var(--text-color);
  background: #fff;
  transition: border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}
.cmt-composer textarea:focus,
.cmt-reply-form textarea:focus {
  outline: none;
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px var(--primary-100);
}
.cmt-composer-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-3);
  margin-top: var(--sp-3);
  padding-left: calc(44px + var(--sp-3));
}
.cmt-kinds { display: flex; flex-wrap: wrap; gap: 0.4rem; flex: 1; }
.kind-pill { cursor: pointer; }
.kind-pill input { position: absolute; opacity: 0; pointer-events: none; }
.kind-pill span {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-soft);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  background: #fff;
  transition: all var(--dur-fast) ease;
}
.kind-pill:hover span { border-color: var(--primary-500); color: var(--primary-700); }
.kind-pill input:checked + span { background: var(--primary-600); border-color: var(--primary-600); color: #fff; }
.kind-pill--bug input:checked + span { background: #be123c; border-color: #be123c; }
.kind-pill--hard input:checked + span { background: #c2410c; border-color: #c2410c; }
.kind-pill--question input:checked + span { background: #6d28d9; border-color: #6d28d9; }
.kind-pill input:focus-visible + span { outline: 2px solid var(--primary-500); outline-offset: 2px; }
.cmt-counter { font-size: 0.75rem; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.cmt-send { min-height: 38px; padding: 0.45rem 1.2rem; }
.cmt-hint {
  margin: 0.5rem 0 0;
  padding-left: calc(44px + var(--sp-3));
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ---------- Threads ---------- */
.cmt-list { display: flex; flex-direction: column; gap: var(--sp-4); }
.cmt-thread + .cmt-thread { border-top: 1px solid var(--border-soft); padding-top: var(--sp-4); }
.cmt { display: flex; gap: var(--sp-3); align-items: flex-start; }
.cmt-avatar { flex-shrink: 0; line-height: 0; border-radius: 50%; }
.cmt-avatar:focus-visible { outline: 2px solid var(--primary-500); outline-offset: 3px; }
.cmt-main { flex: 1; min-width: 0; }
.cmt-head { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem 0.5rem; }
.cmt-name { font-size: 0.92rem; color: var(--text-color); }
.cmt-time { font-size: 0.75rem; color: var(--text-muted); margin-left: auto; }
.cmt-body {
  margin-top: 0.3rem;
  padding: 0.6rem 0.85rem;
  background: #f3f5fa;
  border-radius: 4px 14px 14px 14px;
  color: var(--text-color);
  line-height: 1.55;
  overflow-wrap: anywhere;
}
.cmt--teacher > .cmt-main > .cmt-body {
  background: color-mix(in srgb, var(--primary-600) 8%, #fff);
  border: 1px solid var(--primary-100);
}
.cmt--hidden { opacity: 0.55; }
.cmt-kind {
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.1rem 0.45rem;
  border-radius: 6px;
  background: #eef2f7;
  color: #475569;
}
.cmt-kind--bug { background: #ffe4e6; color: #9f1239; }
.cmt-kind--hard { background: #ffedd5; color: #9a3412; }
.cmt-kind--question { background: #ede9fe; color: #5b21b6; }
.cmt-kind--resolved { background: #dcfce7; color: #166534; }
.cmt-kind--hidden { background: #e2e8f0; color: #334155; }

.cmt-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.3rem 0.5rem; margin-top: 0.4rem; }
.cmt-inline-form { display: inline; margin: 0; }
.react-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-muted);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--dur-fast) ease, transform var(--dur-fast) var(--ease-spring);
}
.react-btn:hover { background: #eef2f9; color: var(--text-color); }
.react-btn:active { transform: scale(0.92); }
.react-btn.is-mine { background: var(--primary-50); border-color: var(--primary-100); color: var(--primary-700); }
.react-btn:focus-visible { outline: 2px solid var(--primary-500); outline-offset: 1px; }
.react-count { font-variant-numeric: tabular-nums; font-weight: 800; }
.cmt-link {
  background: none;
  border: none;
  padding: 0.2rem 0.3rem;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  text-decoration: none;
}
.cmt-link:hover { color: var(--primary-700); text-decoration: underline; }
.cmt-link--danger:hover { color: #be123c; }
.cmt-replies {
  margin: var(--sp-3) 0 0 calc(44px + var(--sp-3));
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  border-left: 2px solid var(--border-soft);
  padding-left: var(--sp-3);
}
.cmt-reply-form {
  display: flex;
  gap: var(--sp-2);
  align-items: flex-end;
  margin: var(--sp-3) 0 0 calc(44px + var(--sp-3));
}
.cmt-empty,
.feed-empty-inline { color: var(--text-muted); text-align: center; padding: 1.5rem; }

/* ---------- Pages: feed, teacher, mascot ---------- */
.social-page { max-width: 880px; margin: 0 auto; padding: var(--sp-6) 0 var(--sp-12); }
.social-hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
  margin-bottom: var(--sp-8);
  padding: clamp(1.25rem, 4vw, 2rem);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 140% at 100% 0%, color-mix(in srgb, var(--primary-500) 18%, transparent), transparent 60%),
    linear-gradient(135deg, #ffffff, #f3f6fd);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
}
.social-hero--teacher {
  background:
    radial-gradient(120% 140% at 100% 0%, color-mix(in srgb, var(--gold-400) 22%, transparent), transparent 60%),
    linear-gradient(135deg, #ffffff, #fbf8f0);
}
.social-eyebrow {
  margin: 0;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary-600);
}
.social-h1 { font-family: var(--font-display); font-size: var(--fs-h1); margin: 0.2rem 0 0.4rem; color: var(--text-color); line-height: 1.1; }
.social-h2 { font-family: var(--font-display); font-size: var(--fs-lg); margin: 0 0 var(--sp-3); color: var(--text-color); }
.social-lede { margin: 0; color: var(--text-muted); max-width: 52ch; }
.social-hero-mascot {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  text-decoration: none;
  color: var(--text-color);
  font-weight: 700;
  font-size: 0.85rem;
  transition: transform var(--dur-med) var(--ease-spring);
}
.social-hero-mascot:hover { transform: translateY(-3px) rotate(-2deg); }

.feed { display: flex; flex-direction: column; gap: var(--sp-4); }
.feed-post {
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: clamp(0.9rem, 3vw, 1.4rem);
  box-shadow: var(--shadow-sm);
}
.feed-post-exercise {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: var(--sp-3);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-700);
  text-decoration: none;
  background: var(--primary-50);
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-pill);
}
.feed-post-exercise:hover { background: var(--primary-100); }
.feed-empty { display: flex; flex-direction: column; align-items: center; gap: var(--sp-3); padding: 3rem 1rem; color: var(--text-muted); text-align: center; }

.hotspots { margin-bottom: var(--sp-8); }
.hotspot-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.5rem; }
.hotspot {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem 0.9rem;
  padding: 0.75rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
}
.hotspot-rank {
  width: 28px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--ink-900);
  font-weight: 800;
  font-size: 0.8rem;
  color: var(--text-color);
}
.hotspot:first-child .hotspot-rank { background: #be123c; color: #fff; }
.hotspot-title { flex: 1; min-width: 12rem; font-weight: 700; color: var(--text-color); text-decoration: none; }
.hotspot-title:hover { color: var(--primary-700); }
.hotspot-stats { display: flex; flex-wrap: wrap; gap: 0.35rem; align-items: center; }
.hotspot-same { font-weight: 800; font-size: 0.8rem; color: var(--text-color); }
.digest-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--sp-3); }
.digest-filters { display: flex; gap: 0.5rem; }
.digest-filters select {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.6rem;
  background: #fff;
  font: inherit;
  font-size: 0.85rem;
}
.digest { display: flex; flex-direction: column; gap: 0.6rem; }
.digest-row {
  display: flex;
  gap: var(--sp-3);
  padding: 0.9rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
}
.digest-row.is-resolved { opacity: 0.65; }
.digest-main { flex: 1; min-width: 0; }
.digest-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.35rem 0.6rem; font-size: 0.82rem; }
.digest-meta a { color: var(--primary-700); font-weight: 600; }
.digest-meta time { color: var(--text-muted); margin-left: auto; }
.digest-body { margin: 0.4rem 0; overflow-wrap: anywhere; }
.digest-foot { display: flex; flex-wrap: wrap; align-items: center; gap: 0.3rem 0.7rem; font-size: 0.8rem; color: var(--text-muted); }

/* Mascot page */
.mascot-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(1rem, 4vw, 2.5rem);
  align-items: center;
  margin-bottom: var(--sp-8);
}
.mascot-stage {
  position: relative;
  aspect-ratio: 1;
  border-radius: 28px;
  background:
    radial-gradient(60% 55% at 50% 60%, color-mix(in srgb, var(--mascot) 22%, transparent), transparent 70%),
    radial-gradient(circle at 50% 40%, #ffffff, #eaf0fb 75%);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-md), inset 0 -30px 60px -40px color-mix(in srgb, var(--mascot) 50%, transparent);
  overflow: hidden;
}
.mascot-canvas { position: absolute; inset: 0; width: 100%; height: 100%; cursor: grab; touch-action: pan-y; }
.mascot-canvas:active { cursor: grabbing; }
.mascot-fallback { position: absolute; inset: 12%; width: 76%; height: 76%; object-fit: contain; transition: opacity var(--dur-med) ease; }
.mascot-stage.is-live .mascot-fallback { opacity: 0; pointer-events: none; }
.mascot-stage.is-fallback .mascot-canvas,
.mascot-stage.is-fallback .mascot-drag-hint { display: none; }
.mascot-drag-hint {
  position: absolute;
  left: 50%;
  bottom: 0.8rem;
  transform: translateX(-50%);
  margin: 0;
  display: inline-flex;
  gap: 0.35rem;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.8);
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-pill);
  pointer-events: none;
}
.mascot-motion-toggle {
  position: absolute; top: 0.6rem; right: 0.6rem; z-index: 2;
  display: inline-flex; align-items: center; gap: 0.35rem;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--glass-border); border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--card-bg) 82%, transparent);
  color: var(--text-muted);
  font-size: 0.72rem; font-weight: 700; cursor: pointer;
}
.mascot-motion-toggle:hover { color: var(--text-color); }
.mascot-motion-toggle:focus-visible { outline: 2px solid var(--primary-500); outline-offset: 2px; }
.mascot-stage.is-fallback .mascot-motion-toggle { display: none; }
.mascot-name { overflow-wrap: anywhere; }
.mascot-form { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; margin: 0 0 0.5rem; }
.mascot-form-name {
  font-weight: 800;
  color: #fff;
  background: color-mix(in srgb, var(--mascot) 80%, #0b1220);
  padding: 0.2rem 0.75rem;
  border-radius: var(--radius-pill);
}
.mascot-form-step { font-size: 0.8rem; font-weight: 700; color: var(--text-muted); }
.mascot-blurb { color: var(--text-muted); margin: 0 0 var(--sp-4); }
.evo-progress {
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  padding: 0.9rem 1rem;
  margin-bottom: var(--sp-4);
}
.evo-progress-head { display: flex; justify-content: space-between; gap: 1rem; font-size: 0.85rem; margin-bottom: 0.5rem; }
.evo-bar { height: 10px; background: var(--ink-900); border-radius: var(--radius-pill); overflow: hidden; }
.evo-bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, color-mix(in srgb, var(--mascot) 70%, #fff), var(--mascot));
}
.evo-note { margin: 0.6rem 0 0; font-size: 0.75rem; color: var(--text-muted); }
.evo-progress--max { text-align: center; color: var(--gold-600); }
.mascot-custom { display: flex; flex-direction: column; gap: var(--sp-3); }
.mascot-field { display: flex; flex-direction: column; gap: 0.3rem; font-size: 0.85rem; font-weight: 700; }
.mascot-field input {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.75rem;
  font: inherit;
  font-weight: 500;
}
.mascot-field input:focus { outline: none; border-color: var(--primary-500); box-shadow: 0 0 0 3px var(--primary-100); }
.mascot-colors { border: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.mascot-colors legend { font-size: 0.85rem; font-weight: 700; margin-bottom: 0.4rem; }
.swatch { display: flex; flex-direction: column; align-items: center; gap: 0.2rem; cursor: pointer; font-size: 0.7rem; font-weight: 600; color: var(--text-muted); width: 62px; }
.swatch input { position: absolute; opacity: 0; pointer-events: none; }
.swatch-dot {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--swatch);
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff;
  box-shadow: 0 0 0 2px #fff, 0 0 0 3px var(--border-soft);
  transition: transform var(--dur-fast) var(--ease-spring), box-shadow var(--dur-fast) ease;
}
.swatch:hover .swatch-dot { transform: scale(1.08); }
.swatch input:checked + .swatch-dot { box-shadow: 0 0 0 2px #fff, 0 0 0 5px var(--swatch); transform: scale(1.08); }
.swatch input:focus-visible + .swatch-dot { outline: 2px solid var(--primary-500); outline-offset: 5px; }
.swatch.is-locked { cursor: not-allowed; }
.swatch.is-locked .swatch-dot { filter: grayscale(0.7) brightness(0.9); opacity: 0.55; }
.mascot-back { align-self: flex-start; }

/* Tứ Linh species picker */
.mascot-species { border: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.5rem; }
.mascot-species legend { font-size: 0.85rem; font-weight: 700; margin-bottom: 0.4rem; }
.species-card { position: relative; cursor: pointer; }
.species-card input { position: absolute; opacity: 0; pointer-events: none; }
.species-card-body {
  display: flex; flex-direction: column; align-items: center; gap: 0.1rem;
  padding: 0.45rem 0.3rem 0.5rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--glass-border);
  background: var(--card-bg);
  text-align: center;
  font-size: 0.68rem; color: var(--text-muted);
  transition: transform var(--dur-fast, 150ms) ease, box-shadow var(--dur-fast, 150ms) ease;
}
.species-card-body img { width: 56px; height: 56px; object-fit: contain; }
.species-card-body strong { font-size: 0.85rem; color: var(--text-color); }
.species-card:hover .species-card-body { transform: translateY(-2px); }
.species-card input:checked + .species-card-body {
  border-color: var(--mascot);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--mascot) 28%, transparent);
}
.species-card input:focus-visible + .species-card-body { outline: 2px solid var(--primary-500); outline-offset: 3px; }

/* Bảng tuyệt kỹ */
.skill-board { margin: var(--sp-6, 2rem) 0; }
.skill-board-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 0.5rem 1rem; margin-bottom: var(--sp-3); }
.skill-board-note { margin: 0; font-size: 0.8rem; color: var(--text-muted); }
.skill-list {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-3);
}
.skill-card {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 0.75rem;
  padding: 0.75rem 0.9rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--glass-border);
  background: var(--card-bg);
}
.skill-card.is-unlocked {
  background:
    linear-gradient(120deg, color-mix(in srgb, var(--mascot) 12%, transparent), transparent 60%),
    var(--card-bg);
}
.skill-card.is-newest { border-color: var(--mascot); box-shadow: 0 0 0 3px color-mix(in srgb, var(--mascot) 22%, transparent); }
.skill-tier {
  width: 2rem; height: 2rem; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 0.85rem;
  color: #fff; background: color-mix(in srgb, var(--mascot) 85%, #0b1220);
}
.skill-card:not(.is-unlocked) .skill-tier { background: var(--ink-900, #334155); opacity: 0.55; }
.skill-text { display: flex; flex-direction: column; gap: 0.15rem; min-width: 0; }
.skill-text strong { font-size: 0.92rem; color: var(--text-color); }
.skill-text span { font-size: 0.76rem; color: var(--text-muted); }
.skill-card:not(.is-unlocked) .skill-text strong { letter-spacing: 0.2em; opacity: 0.6; }
.skill-cast { padding: 0.45rem 0.8rem; font-size: 0.8rem; white-space: nowrap; }
.skill-cast:disabled { opacity: 0.5; cursor: not-allowed; }
.skill-cast.is-casting { animation: skill-press 420ms var(--ease-spring, ease); }
@keyframes skill-press { 30% { transform: scale(0.9); } 70% { transform: scale(1.06); } }
.skill-lock { color: var(--text-muted); opacity: 0.6; }
.skill-callout {
  position: absolute; left: 50%; top: 10%; z-index: 2;
  margin: 0; padding: 0.35rem 1rem;
  transform: translateX(-50%);
  white-space: nowrap; pointer-events: none;
  font-family: "Lexend", var(--font-heading, sans-serif);
  font-size: clamp(1.1rem, 4.5vw, 1.7rem); font-weight: 800; letter-spacing: 0.02em;
  color: #fff;
  text-shadow: 0 2px 0 color-mix(in srgb, var(--mascot) 70%, #000), 0 0 18px color-mix(in srgb, var(--mascot) 80%, #fff);
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--mascot) 35%, rgba(11, 18, 32, 0.55));
  animation: skill-callout 2.2s var(--ease-spring, ease) forwards;
}
@keyframes skill-callout {
  0% { opacity: 0; transform: translateX(-50%) scale(0.4); }
  14% { opacity: 1; transform: translateX(-50%) scale(1.12); }
  24% { transform: translateX(-50%) scale(1); }
  80% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(-14px); }
}

.evo-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--sp-3);
}
.evo-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.2rem;
  padding: 0.8rem 0.5rem;
  border-radius: var(--border-radius);
  background: var(--card-bg);
  border: 1px solid var(--glass-border);
  font-size: 0.75rem;
  color: var(--text-muted);
}
.evo-step img { width: 100%; max-width: 120px; height: auto; }
.evo-step strong { font-size: 0.85rem; color: var(--text-color); }
.evo-step:not(.is-unlocked) img { filter: brightness(0) opacity(0.18); }
.evo-step.is-current {
  border-color: var(--mascot);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--mascot) 25%, transparent);
}

.evo-celebrate {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(6px);
  animation: evo-fade var(--dur-med) ease;
}
.evo-celebrate-card {
  max-width: 420px;
  text-align: center;
  background: #fff;
  border-radius: 24px;
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow-lg);
  animation: evo-pop 520ms var(--ease-spring);
}
.evo-celebrate-card img { display: block; margin: 0 auto; width: 200px; height: 200px; animation: evo-float 2.8s ease-in-out infinite; }
.evo-celebrate-card h2 { font-family: var(--font-display); font-size: var(--fs-h1); margin: 0.75rem 0 0.5rem; color: var(--text-color); line-height: 1.15; }
.evo-celebrate-card p { color: var(--text-muted); margin: 0 0 1.2rem; }
@keyframes evo-fade { from { opacity: 0; } }
@keyframes evo-pop { from { transform: scale(0.85) translateY(12px); opacity: 0; } }
@keyframes evo-float { 50% { transform: translateY(-8px); } }

/* Sidebar user card: mascot avatar + "vừa tiến hoá" dot */
.user-greeting-mascot { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; color: inherit; }
.user-greeting-mascot .mascot-avatar { box-shadow: 0 0 0 2px #fff, 0 0 0 3px var(--ring); }
.evo-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: #e11d48;
  box-shadow: 0 0 0 0 rgba(225, 29, 72, 0.6);
  animation: evo-ping 1.6s infinite;
  flex-shrink: 0;
}
@keyframes evo-ping { 70% { box-shadow: 0 0 0 8px rgba(225, 29, 72, 0); } 100% { box-shadow: 0 0 0 0 rgba(225, 29, 72, 0); } }

@media (max-width: 720px) {
  .social-hero { flex-direction: column; align-items: flex-start; }
  .social-hero-mascot { align-self: center; }
  .mascot-hero { grid-template-columns: 1fr; }
  .evo-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .skill-list { grid-template-columns: 1fr; }
  .cmt-composer-foot, .cmt-hint { padding-left: 0; }
  .cmt-replies, .cmt-reply-form { margin-left: 0; }
  .cmt-time { margin-left: 0; width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .evo-dot, .evo-celebrate-card img, .evo-celebrate, .evo-celebrate-card, .skill-cast.is-casting, .skill-callout { animation: none; }
  .species-card:hover .species-card-body { transform: none; }
  .social-hero-mascot:hover { transform: none; }
}

/* Teacher sidebar: open student-feedback count */
.nav-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.25rem;
  height: 1.25rem;
  padding: 0 0.35rem;
  margin-left: 0.25rem;
  border-radius: var(--radius-pill);
  background: #e11d48;
  color: #fff;
  font-size: 0.68rem;
  font-weight: 800;
}