/* ============================================================
   UVLIS — SENDEROS · community learning academy.
   Reinvented: open, cinematic, Platzi/YouTube-class layout in
   the platform's Apple-glass language. Borderless course cards,
   search-first hero, sticky category chips, cinema player with
   a sticky curriculum rail. Each path themes the UI through its
   --sn accent color. Markup is generated by senderos.js.
   ============================================================ */

:root {
  --sn-font: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Inter', 'Segoe UI', sans-serif;
  --sn-glass: rgba(255, 255, 255, 0.045);
  --sn-glass-hi: rgba(255, 255, 255, 0.08);
  --sn-line: rgba(255, 255, 255, 0.09);
  --sn-line-soft: rgba(255, 255, 255, 0.05);
  --sn-blur: blur(24px) saturate(160%);
  --sn-ink: #f5f5f7;
  --sn-dim: #a6a6b0;
  --sn-faint: #6f6f7a;
  --sn-gold: #f5b544;
}

#sn-app { --sn: #22c55e; }

/* ── Canvas ───────────────────────────────────────────────── */
.tienda-content:has(#sn-app)::before,
.tienda-content:has(#sn-app)::after { display: none; }
.tienda-content:has(#sn-app) {
  background:
    radial-gradient(1200px 680px at 78% -12%, rgba(34, 197, 94, 0.07), transparent 62%),
    radial-gradient(1000px 600px at 6% 0%, rgba(124, 58, 237, 0.08), transparent 58%),
    #050507;
  font-family: var(--sn-font);
}

/* ── Topbar bits ──────────────────────────────────────────── */
.sn-topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.sn-balance-chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 14px; border-radius: 999px;
  background: var(--sn-glass); border: 1px solid var(--sn-line);
  color: var(--sn-dim); font-size: 0.82rem; font-weight: 600;
}
.sn-balance-chip svg { width: 15px; height: 15px; color: var(--sn-gold); }
.sn-balance-chip b { color: var(--sn-ink); font-variant-numeric: tabular-nums; }

/* ── Buttons ──────────────────────────────────────────────── */
.sn-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 22px; border-radius: 999px; border: 1px solid transparent;
  font-family: var(--sn-font); font-size: 0.9rem; font-weight: 600;
  cursor: pointer; white-space: nowrap; text-decoration: none; color: var(--sn-ink);
  background: var(--sn-glass);
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.sn-btn:active { transform: scale(0.97); }
.sn-btn:disabled { opacity: 0.6; cursor: default; }
.sn-btn-primary,
.sn-btn-accent { background: linear-gradient(135deg, #7c3aed, #6d28d9); color: #fff; box-shadow: 0 10px 24px -10px rgba(124, 58, 237, 0.7); }
.sn-btn-primary:hover,
.sn-btn-accent:hover { filter: brightness(1.08); transform: translateY(-1px); }
.sn-btn-ghost { background: var(--sn-glass); border-color: var(--sn-line); color: var(--sn-ink); }
.sn-btn-ghost:hover { background: var(--sn-glass-hi); border-color: var(--border-strong); }
.sn-btn-support { background: rgba(245, 181, 68, 0.12); border-color: rgba(245, 181, 68, 0.3); color: #f5c469; }
.sn-btn-support:hover { background: rgba(245, 181, 68, 0.2); }
.sn-btn-danger { background: rgba(239, 68, 68, 0.1); border-color: rgba(239, 68, 68, 0.3); color: #fca5a5; }
.sn-btn-danger:hover { background: rgba(239, 68, 68, 0.18); }
.sn-btn-sm { padding: 8px 16px; font-size: 0.84rem; }
.sn-btn-mini { padding: 7px 14px; font-size: 0.8rem; }
.sn-btn-block { width: 100%; }

.sn-icon-btn {
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--sn-line);
  background: var(--sn-glass); color: var(--sn-dim); font-size: 0.8rem;
  display: inline-flex; align-items: center; justify-content: center; cursor: pointer;
  transition: background 0.14s ease, color 0.14s ease;
}
.sn-icon-btn:hover:not(:disabled) { background: var(--sn-glass-hi); color: #fff; }
.sn-icon-btn:disabled { opacity: 0.35; cursor: default; }

/* ── Empty / loading states ───────────────────────────────── */
.sn-empty {
  grid-column: 1 / -1; text-align: center; padding: 64px 20px;
  color: var(--sn-faint); font-size: 0.95rem; line-height: 1.7;
}
.sn-empty-ic { display: block; font-size: 2.2rem; margin-bottom: 12px; opacity: 0.7; }
.sn-inline-empty { color: var(--sn-faint); font-size: 0.86rem; padding: 16px; text-align: center; line-height: 1.6; }

/* ════════════════════════════════════════════════════════════
   CATALOG
   ════════════════════════════════════════════════════════════ */
.sn-catalog { max-width: 1440px; margin: 0 auto; padding: 0 28px 80px; }

/* Hero — search-first, cinematic */
.sn-hero { padding: 64px 0 40px; text-align: center; }
.sn-hero-inner { max-width: 720px; margin: 0 auto; }
.sn-hero-badge {
  display: inline-block; padding: 6px 14px; border-radius: 999px;
  background: var(--sn-glass); border: 1px solid var(--sn-line);
  font-size: 0.7rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--sn-dim); margin-bottom: 18px;
}
.sn-hero h1 {
  font-size: clamp(2rem, 4.6vw, 3.1rem); font-weight: 700; letter-spacing: -0.035em;
  color: var(--sn-ink); line-height: 1.06; margin: 0 0 14px;
}
.sn-hero p { color: var(--sn-dim); font-size: 1.02rem; line-height: 1.65; max-width: 560px; margin: 0 auto 26px; }

.sn-hero-search { max-width: 620px; margin: 0 auto; }
.sn-hero-search .sn-search-input { height: 54px; font-size: 1rem; border-radius: 999px; padding-left: 52px; }
.sn-hero-search .sn-search-ic { left: 20px; width: 18px; height: 18px; }

.sn-hero-actions { display: flex; justify-content: center; gap: 12px; margin-top: 22px; flex-wrap: wrap; }

.sn-hero-stats {
  display: flex; justify-content: center; gap: 34px; flex-wrap: wrap;
  margin-top: 30px;
}
.sn-hstat { text-align: center; }
.sn-hstat b {
  display: block; font-size: 1.4rem; font-weight: 700; letter-spacing: -0.02em;
  color: var(--sn-ink); font-variant-numeric: tabular-nums;
}
.sn-hstat span { font-size: 0.72rem; color: var(--sn-faint); text-transform: uppercase; letter-spacing: 0.08em; }

/* Category chips — sticky bar (YouTube-style) */
.sn-cats {
  position: sticky; top: 0; z-index: 30;
  display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none;
  margin: 0 -28px; padding: 12px 28px;
  background: transparent;
}
.sn-cats::-webkit-scrollbar { display: none; }
.sn-cat {
  flex: 0 0 auto; display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 16px; border-radius: 999px;
  border: 1px solid var(--sn-line); background: var(--sn-glass);
  color: var(--sn-dim); font-family: var(--sn-font); font-size: 0.84rem; font-weight: 500;
  cursor: pointer; white-space: nowrap;
  transition: all 0.15s ease;
}
.sn-cat:hover { color: #fff; background: var(--sn-glass-hi); }
.sn-cat.active { background: #fff; border-color: #fff; color: #050507; font-weight: 600; }
.sn-cat-n { font-size: 0.72rem; opacity: 0.6; font-variant-numeric: tabular-nums; }

/* Continue rail — horizontal scroll */
.sn-section-head {
  display: flex; align-items: baseline; gap: 12px;
  margin: 28px 0 16px;
}
.sn-section-head h2 { font-size: 1.3rem; font-weight: 600; letter-spacing: -0.02em; color: var(--sn-ink); }
.sn-section-sub { color: var(--sn-faint); font-size: 0.84rem; }

.sn-rail {
  display: flex; gap: 16px; overflow-x: auto; scrollbar-width: none;
  margin: 0 -28px; padding: 4px 28px 8px;
}
.sn-rail::-webkit-scrollbar { display: none; }
.sn-rail-card { flex: 0 0 300px; cursor: pointer; }
.sn-rail-cover {
  position: relative; aspect-ratio: 16 / 9; border-radius: 14px; overflow: hidden;
  background:
    radial-gradient(130% 130% at 20% 0%, color-mix(in srgb, var(--sn, #22c55e) 22%, transparent), transparent 62%),
    rgba(255, 255, 255, 0.035);
  border: 1px solid var(--sn-line-soft);
  display: flex; align-items: center; justify-content: center;
}
.sn-rail-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1); }
.sn-rail-card:hover .sn-rail-cover img { transform: scale(1.04); }
.sn-rail-glyph { font-size: 3rem; filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.4)); }
.sn-rail-cover .sn-pill { position: absolute !important; left: 10px; top: 10px; }
.sn-rail-body { padding: 10px 2px 0; }
.sn-rail-title {
  font-size: 0.94rem; font-weight: 600; letter-spacing: -0.01em; color: var(--sn-ink); line-height: 1.35;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.sn-rail-prog { margin-top: 8px; }
.sn-rail-prog-top {
  display: flex; justify-content: space-between; font-size: 0.74rem; color: var(--sn-faint); margin-bottom: 6px;
}
.sn-rail-prog-top b { color: var(--sn-ink); }

/* Toolbar */
.sn-toolbar {
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  margin: 26px 0 20px;
}
.sn-toolbar-count { color: var(--sn-faint); font-size: 0.86rem; }
.sn-sort {
  margin-left: auto;
  padding: 9px 14px; border-radius: 12px; border: 1px solid var(--sn-line);
  background: var(--sn-glass); color: var(--sn-ink);
  font-family: var(--sn-font); font-size: 0.85rem; font-weight: 500; cursor: pointer; outline: none;
}
.sn-sort:focus { border-color: rgba(255, 255, 255, 0.24); }

/* Search (hero) */
.sn-search { position: relative; }
.sn-search-ic {
  position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
  width: 15px; height: 15px; fill: none; stroke: var(--sn-faint); stroke-width: 2; pointer-events: none;
}
.sn-search-input {
  width: 100%; padding: 10px 16px 10px 40px; border-radius: 999px;
  border: 1px solid var(--sn-line); background: var(--sn-glass);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  color: #fff; font-family: var(--sn-font); font-size: 0.9rem; outline: none;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.sn-search-input::placeholder { color: var(--sn-faint); }
.sn-search-input:focus { border-color: rgba(255, 255, 255, 0.26); background: var(--sn-glass-hi); }

/* ── Course cards — borderless, YouTube-style ─────────────── */
.sn-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 34px 22px;
}
.sn-card { cursor: pointer; }
.sn-card-cover {
  position: relative; aspect-ratio: 16 / 9; border-radius: 16px; overflow: hidden;
  background:
    radial-gradient(130% 130% at 22% 0%, color-mix(in srgb, var(--sn, #22c55e) 24%, transparent), transparent 64%),
    rgba(255, 255, 255, 0.035);
  border: 1px solid var(--sn-line-soft);
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.2s ease;
}
.sn-card:hover .sn-card-cover { border-color: rgba(255, 255, 255, 0.14); }
.sn-card-cover img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}
.sn-card:hover .sn-card-cover img { transform: scale(1.045); }
.sn-card-glyph { font-size: 3.6rem; filter: drop-shadow(0 10px 22px rgba(0, 0, 0, 0.45)); position: relative; }

.sn-pill {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 10px; border-radius: 999px;
  background: rgba(5, 5, 8, 0.6); border: 1px solid rgba(255, 255, 255, 0.1);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  color: #e9e9ef; font-size: 0.7rem; font-weight: 600; letter-spacing: 0.02em;
}
.sn-card-cat { position: absolute; top: 10px; left: 10px; }
.sn-card-stagepill {
  position: absolute; bottom: 10px; right: 10px;
  background: rgba(0, 0, 0, 0.72); border-color: transparent;
  font-variant-numeric: tabular-nums;
}
.sn-card-state {
  position: absolute; bottom: 10px; left: 10px;
  display: inline-flex; align-items: center;
  padding: 4px 10px; border-radius: 999px;
  background: color-mix(in srgb, var(--sn, #22c55e) 24%, rgba(0, 0, 0, 0.7));
  color: #fff; font-size: 0.7rem; font-weight: 600;
}
.sn-card-progbar {
  position: absolute; left: 0; right: 0; bottom: 0; height: 3px;
  background: rgba(255, 255, 255, 0.16);
}
.sn-card-progbar i { display: block; height: 100%; background: var(--sn, #22c55e); }

.sn-card-body { display: flex; gap: 12px; padding: 12px 2px 0; }
.sn-card-avatar,
.sn-mini-avatar {
  width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 0.9rem; overflow: hidden; text-decoration: none;
}
.sn-mini-avatar { width: 22px; height: 22px; font-size: 0.68rem; }
.sn-card-avatar img, .sn-mini-avatar img, .sn-avatar img { width: 100%; height: 100%; object-fit: cover; }
.sn-card-info { min-width: 0; flex: 1; }
.sn-card-title {
  font-size: 0.98rem; font-weight: 600; letter-spacing: -0.01em; color: var(--sn-ink); line-height: 1.35;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.sn-card-creator { margin-top: 4px; font-size: 0.8rem; color: var(--sn-dim); }
.sn-card-creator strong { font-weight: 500; }
.sn-card-meta { margin-top: 2px; font-size: 0.8rem; color: var(--sn-faint); }
.sn-meta-item.is-support { color: var(--sn-gold); }

/* ════════════════════════════════════════════════════════════
   COURSE (full page)
   ════════════════════════════════════════════════════════════ */
.sn-course { max-width: 1520px; margin: 0 auto; padding: 18px 24px 90px; }
.sn-course-top { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.sn-back {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px; border-radius: 999px;
  border: 1px solid var(--sn-line); background: var(--sn-glass);
  color: var(--sn-dim); font-family: var(--sn-font); font-size: 0.86rem; font-weight: 500; cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.sn-back:hover { background: var(--sn-glass-hi); color: #fff; }
.sn-course-top-actions { margin-left: auto; display: flex; gap: 10px; }

.sn-course-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 400px;
  gap: 26px;
  align-items: start;
}
.sn-viewer-wrap { grid-column: 1; }
.sn-course-rail {
  grid-column: 2; grid-row: 1 / span 2;
  position: sticky; top: 16px;
  max-height: calc(100dvh - 32px);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  display: flex; flex-direction: column; gap: 16px;
  padding-bottom: 4px;
}
.sn-course-tabs-wrap { grid-column: 1; min-width: 0; }

/* ── Viewer: cinema ───────────────────────────────────────── */
.sn-viewer-stage {
  position: relative; aspect-ratio: 16 / 9; border-radius: 18px; overflow: hidden;
  background: #000;
  border: 1px solid var(--sn-line-soft);
  box-shadow: 0 40px 90px -50px rgba(0, 0, 0, 0.9);
}
.sn-viewer-stage video, .sn-viewer-stage iframe, .sn-viewer-stage img {
  position: absolute; inset: 0; width: 100%; height: 100%; border: 0;
}
.sn-viewer-stage img { object-fit: contain; background: #000; }

.sn-viewer-cover { position: absolute; inset: 0; }
.sn-viewer-cover img { object-fit: cover; opacity: 0.32; }
.sn-viewer-cover-inner {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center; padding: 28px; gap: 8px;
}
.sn-viewer-emoji { font-size: 3rem; filter: drop-shadow(0 10px 24px rgba(0, 0, 0, 0.5)); }
.sn-viewer-cover-inner h3 { font-size: 1.4rem; font-weight: 700; letter-spacing: -0.02em; color: #fff; }
.sn-viewer-cover-inner p { color: var(--sn-dim); max-width: 460px; line-height: 1.6; font-size: 0.92rem; }

/* Reader mode (text lessons) */
.sn-viewer-reader {
  background: var(--sn-glass);
  border: 1px solid var(--sn-line);
  -webkit-backdrop-filter: var(--sn-blur);
  backdrop-filter: var(--sn-blur);
  border-radius: 18px;
  padding: 26px 28px;
  margin-top: 14px;
}
.sn-viewer > .sn-viewer-reader:first-child { margin-top: 0; }
.sn-reader-type {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: 999px;
  background: color-mix(in srgb, var(--sn, #22c55e) 14%, transparent);
  color: color-mix(in srgb, var(--sn, #22c55e) 55%, #fff);
  font-size: 0.74rem; font-weight: 600;
}
.sn-reader-body {
  color: var(--sn-ink); font-size: 1.02rem; line-height: 1.8; white-space: pre-wrap; word-break: break-word;
}
.sn-viewer-reader img { max-width: 100%; border-radius: 14px; margin-top: 16px; }
.sn-reader-link {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 16px;
  padding: 10px 18px; border-radius: 999px;
  background: var(--sn-glass-hi); border: 1px solid var(--sn-line);
  color: var(--sn-ink); font-size: 0.88rem; font-weight: 600; text-decoration: none;
  transition: background 0.15s ease;
}
.sn-reader-link:hover { background: rgba(255, 255, 255, 0.12); }

/* Lesson bar (under the player — YouTube title row) */
.sn-lesson-bar {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 16px 4px 0;
}
.sn-lesson-bar-main { min-width: 0; flex: 1; }
.sn-lesson-bar-type {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.72rem; font-weight: 600; color: color-mix(in srgb, var(--sn, #22c55e) 60%, #fff);
  margin-bottom: 6px;
}
.sn-lesson-bar-title { font-size: 1.25rem; font-weight: 600; letter-spacing: -0.02em; color: var(--sn-ink); line-height: 1.3; }
.sn-lesson-bar-by {
  display: flex; align-items: center; gap: 7px; margin-top: 8px;
  color: var(--sn-faint); font-size: 0.82rem;
}
.sn-lesson-bar-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; padding-top: 4px; }

.sn-vote { display: inline-flex; }
.sn-vote-btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 15px; border-radius: 999px;
  border: 1px solid var(--sn-line); background: var(--sn-glass);
  color: var(--sn-dim); font-family: var(--sn-font); font-size: 0.84rem; font-weight: 600; cursor: pointer;
  font-variant-numeric: tabular-nums;
  transition: all 0.15s ease;
}
.sn-vote-btn:hover { background: var(--sn-glass-hi); color: #fff; }
.sn-vote-btn.active {
  background: color-mix(in srgb, var(--sn, #22c55e) 18%, transparent);
  border-color: color-mix(in srgb, var(--sn, #22c55e) 40%, transparent);
  color: color-mix(in srgb, var(--sn, #22c55e) 60%, #fff);
}
.sn-vote-arrow { font-size: 0.72rem; }

.sn-contrib-del {
  background: none; border: none; color: var(--sn-faint); font-size: 0.76rem; cursor: pointer;
  font-family: var(--sn-font);
}
.sn-contrib-del:hover { color: #fca5a5; }

/* ── Curriculum rail (playlist panel) ─────────────────────── */
.sn-curr {
  background: var(--sn-glass);
  border: 1px solid var(--sn-line);
  -webkit-backdrop-filter: var(--sn-blur);
  backdrop-filter: var(--sn-blur);
  border-radius: 20px;
  overflow: hidden;
}
.sn-curr-head { padding: 18px 18px 14px; border-bottom: 1px solid var(--sn-line-soft); }
.sn-curr-head-top { display: flex; align-items: center; justify-content: space-between; }
.sn-curr-head h3 { font-size: 1rem; font-weight: 600; letter-spacing: -0.01em; color: var(--sn-ink); }
.sn-curr-head-frac { font-size: 0.8rem; color: var(--sn-faint); font-variant-numeric: tabular-nums; }
.sn-curr-prog { margin-top: 12px; }
.sn-curr-prog-track { height: 4px; border-radius: 999px; background: rgba(255, 255, 255, 0.09); overflow: hidden; }
.sn-curr-prog-fill { height: 100%; border-radius: inherit; background: var(--sn, #22c55e); transition: width 0.4s ease; }
.sn-curr-prog-label {
  display: flex; justify-content: space-between; margin-top: 7px;
  font-size: 0.74rem; color: var(--sn-faint);
}
.sn-curr-prog-label b { color: var(--sn-ink); }
.sn-curr-list { padding: 8px; }
.sn-curr-foot { padding: 8px 12px 14px; }

.sn-curr-stage { border-radius: 14px; overflow: hidden; }
.sn-curr-stage + .sn-curr-stage { margin-top: 2px; }
.sn-curr-stage-head {
  display: flex; align-items: center; gap: 12px; padding: 11px 10px;
  border-radius: 14px; cursor: pointer;
  transition: background 0.14s ease;
}
.sn-curr-stage-head:hover { background: var(--sn-glass); }
.sn-curr-stage-num {
  width: 28px; height: 28px; border-radius: 50%; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--sn-glass-hi); border: 1px solid var(--sn-line);
  color: var(--sn-dim); font-size: 0.78rem; font-weight: 600; font-variant-numeric: tabular-nums;
}
.sn-curr-stage.is-done .sn-curr-stage-num {
  background: color-mix(in srgb, var(--sn, #22c55e) 22%, transparent);
  border-color: color-mix(in srgb, var(--sn, #22c55e) 45%, transparent);
  color: color-mix(in srgb, var(--sn, #22c55e) 65%, #fff);
}
.sn-curr-stage-info { flex: 1; min-width: 0; }
.sn-curr-stage-name { font-size: 0.9rem; font-weight: 600; color: var(--sn-ink); line-height: 1.3; }
.sn-curr-stage-meta { font-size: 0.74rem; color: var(--sn-faint); margin-top: 2px; }
.sn-curr-stage-caret { color: var(--sn-faint); font-size: 0.7rem; transition: transform 0.2s ease; }
.sn-curr-stage.open .sn-curr-stage-caret { transform: rotate(180deg); }
.sn-curr-stage-body { display: none; padding: 2px 6px 8px 14px; }
.sn-curr-stage.open .sn-curr-stage-body { display: block; }

.sn-lesson {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: 11px; cursor: pointer;
  border-left: 2px solid transparent;
  transition: background 0.13s ease;
}
.sn-lesson:hover { background: var(--sn-glass); }
.sn-lesson.active {
  background: color-mix(in srgb, var(--sn, #22c55e) 13%, transparent);
  border-left-color: var(--sn, #22c55e);
}
.sn-lesson-ic { font-size: 0.92rem; flex-shrink: 0; width: 22px; text-align: center; }
.sn-lesson-main { min-width: 0; flex: 1; }
.sn-lesson-title {
  font-size: 0.85rem; font-weight: 500; color: var(--sn-ink); line-height: 1.35;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.sn-lesson.active .sn-lesson-title { font-weight: 600; }
.sn-lesson-sub { display: flex; gap: 8px; font-size: 0.72rem; color: var(--sn-faint); margin-top: 2px; }
.sn-lesson-score { color: var(--sn-dim); }

.sn-curr-stage-tools {
  display: flex; align-items: center; gap: 8px; padding: 8px 6px 4px;
}
.sn-curr-stage-check {
  flex: 1; padding: 8px 12px; border-radius: 999px;
  border: 1px solid var(--sn-line); background: transparent;
  color: var(--sn-dim); font-family: var(--sn-font); font-size: 0.78rem; font-weight: 600; cursor: pointer;
  transition: all 0.15s ease;
}
.sn-curr-stage-check:hover { background: var(--sn-glass); color: #fff; }
.sn-curr-stage-check.is-done {
  background: color-mix(in srgb, var(--sn, #22c55e) 14%, transparent);
  border-color: color-mix(in srgb, var(--sn, #22c55e) 38%, transparent);
  color: color-mix(in srgb, var(--sn, #22c55e) 62%, #fff);
}
.sn-curr-add {
  width: 32px; height: 32px; border-radius: 50%; flex-shrink: 0;
  border: 1px dashed rgba(255, 255, 255, 0.2); background: transparent;
  color: var(--sn-dim); font-size: 0.9rem; cursor: pointer;
  transition: all 0.15s ease;
}
.sn-curr-add:hover { border-color: rgba(255, 255, 255, 0.4); color: #fff; background: var(--sn-glass); }

/* ── Instructor panel ─────────────────────────────────────── */
.sn-instructor {
  background: var(--sn-glass);
  border: 1px solid var(--sn-line);
  -webkit-backdrop-filter: var(--sn-blur);
  backdrop-filter: var(--sn-blur);
  border-radius: 20px;
  padding: 16px;
}
.sn-instructor-h {
  font-size: 0.74rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--sn-faint); margin-bottom: 12px;
}
.sn-instructor-add { margin-top: 10px; }

.sn-avatar {
  width: 42px; height: 42px; border-radius: 50%; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; overflow: hidden; text-decoration: none;
}
.sn-teacher { display: flex; gap: 12px; padding: 10px 6px; align-items: flex-start; position: relative; }
.sn-teacher + .sn-teacher { border-top: 1px solid var(--sn-line-soft); }
.sn-teacher-main { flex: 1; min-width: 0; }
.sn-teacher-name { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.sn-teacher-name a { color: var(--sn-ink); font-weight: 600; font-size: 0.94rem; text-decoration: none; }
.sn-teacher-name a:hover { text-decoration: underline; }
.sn-teacher-badge {
  font-size: 0.62rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em;
  padding: 2px 8px; border-radius: 999px;
  background: color-mix(in srgb, var(--sn, #22c55e) 16%, transparent);
  color: color-mix(in srgb, var(--sn, #22c55e) 62%, #fff);
}
.sn-teacher-stats { display: flex; gap: 14px; margin-top: 4px; font-size: 0.78rem; color: var(--sn-faint); }
.sn-teacher-stats b { color: var(--sn-dim); }
.sn-teacher-bio { margin-top: 6px; font-size: 0.82rem; color: var(--sn-dim); line-height: 1.5; }
.sn-teacher-support { margin-top: 10px; }
.sn-teacher-rm {
  position: absolute; top: 10px; right: 4px;
  width: 26px; height: 26px; border-radius: 50%; border: none;
  background: transparent; color: var(--sn-faint); font-size: 0.74rem; cursor: pointer;
}
.sn-teacher-rm:hover { background: rgba(239, 68, 68, 0.14); color: #fca5a5; }

/* Support CTA */
.sn-support-cta {
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  padding: 16px; border-radius: 20px; cursor: pointer;
  background: rgba(245, 181, 68, 0.08);
  border: 1px solid rgba(245, 181, 68, 0.24);
  color: #f5c469; font-family: var(--sn-font); font-size: 0.95rem; font-weight: 600;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.sn-support-cta:hover { background: rgba(245, 181, 68, 0.14); border-color: rgba(245, 181, 68, 0.4); }
.sn-support-cta small { color: rgba(245, 196, 105, 0.65); font-weight: 500; font-size: 0.76rem; }

/* ── Headline + tabs (under viewer) ───────────────────────── */
.sn-headline { padding: 26px 4px 0; }
.sn-headline-cats { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.sn-headline-cats .sn-pill { background: var(--sn-glass); border-color: var(--sn-line); }
.sn-headline h1 { font-size: 1.7rem; font-weight: 700; letter-spacing: -0.03em; color: var(--sn-ink); line-height: 1.15; }
.sn-headline-sub { color: var(--sn-dim); margin-top: 8px; line-height: 1.6; }
.sn-headline-row {
  display: flex; align-items: center; gap: 22px; flex-wrap: wrap; margin-top: 18px;
}
.sn-headline-by { display: flex; align-items: center; gap: 10px; }
.sn-hb-meta { display: flex; flex-direction: column; }
.sn-hb-meta small { color: var(--sn-faint); font-size: 0.7rem; }
.sn-hb-meta a { color: var(--sn-ink); font-weight: 600; font-size: 0.9rem; text-decoration: none; }
.sn-hb-meta a:hover { text-decoration: underline; }
.sn-headline-stat { color: var(--sn-faint); font-size: 0.84rem; }
.sn-headline-stat b { color: var(--sn-ink); }
.sn-headline-stat.is-support b { color: var(--sn-gold); }

.sn-tabs {
  display: flex; gap: 4px; margin-top: 22px;
  border-bottom: 1px solid var(--sn-line-soft);
  overflow-x: auto; scrollbar-width: none;
}
.sn-tabs::-webkit-scrollbar { display: none; }
.sn-tab {
  padding: 11px 16px; background: none; border: none;
  border-bottom: 2px solid transparent;
  color: var(--sn-faint); font-family: var(--sn-font); font-weight: 600; font-size: 0.88rem;
  cursor: pointer; white-space: nowrap;
  transition: color 0.15s ease;
}
.sn-tab:hover { color: var(--sn-ink); }
.sn-tab.active { color: #fff; border-bottom-color: #fff; }
.sn-tab-count { font-size: 0.72rem; opacity: 0.6; font-variant-numeric: tabular-nums; }

.sn-tabpane { display: none; padding: 22px 4px 0; }
.sn-tabpane.active { display: block; }

.sn-about { color: var(--sn-ink); font-size: 0.98rem; line-height: 1.8; white-space: pre-wrap; word-break: break-word; max-width: 760px; }
.sn-about-empty { color: var(--sn-faint); }

/* Contributions list */
.sn-contribs { display: flex; flex-direction: column; gap: 10px; }
.sn-contrib {
  display: flex; gap: 14px; padding: 14px;
  background: var(--sn-glass); border: 1px solid var(--sn-line-soft);
  border-radius: 16px; cursor: pointer;
  transition: background 0.14s ease, border-color 0.14s ease;
}
.sn-contrib:hover { background: var(--sn-glass-hi); border-color: var(--sn-line); }
.sn-contrib-thumb {
  position: relative; width: 108px; aspect-ratio: 16 / 10; border-radius: 10px; overflow: hidden; flex-shrink: 0;
  background: rgba(255, 255, 255, 0.04);
  display: flex; align-items: center; justify-content: center; font-size: 1.5rem;
}
.sn-contrib-thumb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.sn-thumb-play {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  background: rgba(0, 0, 0, 0.35); color: #fff; font-size: 1rem;
}
.sn-contrib-main { flex: 1; min-width: 0; }
.sn-contrib-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.sn-contrib-type { font-size: 0.72rem; font-weight: 600; color: color-mix(in srgb, var(--sn, #22c55e) 60%, #fff); }
.sn-contrib-title { font-weight: 600; color: var(--sn-ink); font-size: 0.94rem; }
.sn-contrib-snippet {
  margin-top: 5px; color: var(--sn-dim); font-size: 0.84rem; line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; word-break: break-word;
}
.sn-contrib-foot {
  display: flex; align-items: center; gap: 7px; margin-top: 9px;
  color: var(--sn-faint); font-size: 0.78rem;
}

/* Discussion */
.sn-chat-list { display: flex; flex-direction: column; gap: 14px; max-height: 460px; overflow-y: auto; padding-right: 6px; }
.sn-msg { display: flex; gap: 10px; }
.sn-msg-body { min-width: 0; flex: 1; }
.sn-msg-meta { display: flex; align-items: baseline; gap: 8px; }
.sn-msg-user { font-weight: 600; font-size: 0.86rem; color: var(--sn-ink); }
.sn-msg-time { font-size: 0.72rem; color: var(--sn-faint); }
.sn-msg-del { background: none; border: none; color: var(--sn-faint); font-size: 0.72rem; cursor: pointer; font-family: var(--sn-font); }
.sn-msg-del:hover { color: #fca5a5; }
.sn-msg-text {
  margin-top: 3px; color: var(--sn-dim); font-size: 0.9rem; line-height: 1.55;
  white-space: pre-wrap; word-break: break-word;
}
.sn-chat-form { display: flex; gap: 10px; margin-top: 16px; align-items: flex-end; }
.sn-chat-form textarea { flex: 1; border-radius: 16px; }

/* Supporters */
.sn-support-banner {
  display: flex; align-items: center; gap: 14px;
  padding: 18px; border-radius: 18px;
  background: rgba(245, 181, 68, 0.07); border: 1px solid rgba(245, 181, 68, 0.22);
  margin-bottom: 16px;
}
.sn-support-banner-ic { font-size: 1.6rem; }
.sn-support-banner-main { flex: 1; display: flex; flex-direction: column; gap: 2px; }
.sn-support-banner-main b { color: var(--sn-gold); font-size: 1.15rem; letter-spacing: -0.01em; }
.sn-support-banner-main span { color: var(--sn-dim); font-size: 0.84rem; }
.sn-supporters { display: flex; flex-direction: column; gap: 8px; }
.sn-supporter {
  display: flex; align-items: center; gap: 12px; padding: 12px 14px;
  background: var(--sn-glass); border: 1px solid var(--sn-line-soft); border-radius: 14px;
}
.sn-supporter-main { flex: 1; min-width: 0; }
.sn-sup-who { font-size: 0.88rem; color: var(--sn-dim); }
.sn-sup-who b { color: var(--sn-ink); }
.sn-sup-msg { margin-top: 3px; font-size: 0.84rem; color: var(--sn-dim); font-style: italic; }
.sn-supporter-amt { color: var(--sn-gold); font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap; }

/* ════════════════════════════════════════════════════════════
   MODALS (create / contribute / stage / support)
   ════════════════════════════════════════════════════════════ */
/* Refreshed, fully theme-aware modals (dark + light). Everything flows
   through the global design tokens, so it inverts cleanly in light mode. */
.sn-overlay {
  background: rgba(10, 8, 20, 0.5);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  padding: 20px;
}
.sn-modal {
  position: relative;
  background: var(--bg-elevated) !important;
  border: 1px solid var(--border-default) !important;
  -webkit-backdrop-filter: blur(30px) saturate(180%);
  backdrop-filter: blur(30px) saturate(180%);
  border-radius: 28px !important;
  max-width: 540px;
  width: 100%;
  max-height: 92dvh;
  overflow-y: auto;
  padding: 30px 30px 26px !important;
  font-family: var(--sn-font);
  box-shadow: var(--shadow-lg);
  animation: snModalIn 0.34s cubic-bezier(0.34, 1.4, 0.5, 1) both;
}
@keyframes snModalIn {
  from { opacity: 0; transform: translateY(18px) scale(0.965); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.sn-modal h3 {
  font-size: 1.5rem; font-weight: 700; letter-spacing: -0.02em;
  color: var(--text-primary); margin: 0 0 5px;
}
.sn-modal-close {
  position: absolute; top: 18px; right: 18px;
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--border-subtle);
  background: var(--bg-hover); color: var(--text-secondary); font-size: 0.9rem;
  display: grid; place-items: center; cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 2;
}
.sn-modal-close:hover { background: var(--danger-500); color: #fff; transform: rotate(90deg); }
.sn-form-note { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.55; margin: 4px 0 24px; }

/* Fields */
.sn-field { margin-bottom: 18px; }
.sn-modal .form-label {
  font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em;
  color: var(--text-muted); margin-bottom: 9px;
}
.sn-modal .form-input {
  background: var(--bg-surface);
  border: 1.5px solid var(--border-default);
  border-radius: 14px;
  padding: 12px 15px;
}
.sn-modal .form-input:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.16);
  background: var(--bg-elevated);
}
.sn-modal .form-input:hover:not(:focus) { border-color: var(--border-strong); }
.sn-row3 { display: flex; gap: 12px; }
.sn-row3 .sn-field { margin-bottom: 18px; }
.sn-grow { flex: 1; }
.sn-emoji-input { width: 66px; text-align: center; font-size: 1.35rem; padding: 10px !important; }
.sn-color-input { width: 66px; height: 50px; padding: 5px !important; cursor: pointer; }

/* File inputs — style the native picker button into a pill */
.sn-file { padding: 0 !important; display: flex; align-items: center; overflow: hidden; }
.sn-file::-webkit-file-upload-button,
.sn-file::file-selector-button {
  margin: 0 12px 0 0; padding: 12px 16px; border: none;
  border-right: 1px solid var(--border-default);
  background: var(--bg-hover); color: var(--text-primary);
  font-family: inherit; font-weight: 600; font-size: 0.85rem; cursor: pointer;
  transition: background 0.15s ease;
}
.sn-file::-webkit-file-upload-button:hover,
.sn-file::file-selector-button:hover { background: var(--border-default); }

.sn-form-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 28px; }

/* Segmented pickers & chips — Aportar (type) / Apoyar (who + amount) */
.sn-type-picker, .sn-support-who, .sn-amount-chips { display: flex; gap: 9px; flex-wrap: wrap; }
.sn-amount-chips { margin-bottom: 12px; }
.sn-type-btn, .sn-who-chip, .sn-amount-chip {
  display: inline-flex; align-items: center; gap: 8px;
  border-radius: 14px;
  border: 1.5px solid var(--border-default); background: var(--bg-surface);
  color: var(--text-secondary); font-family: var(--sn-font); font-weight: 600; cursor: pointer;
  transition: transform 0.14s ease, background 0.14s ease, border-color 0.14s ease, color 0.14s ease, box-shadow 0.14s ease;
}
.sn-type-btn { padding: 10px 16px; font-size: 0.85rem; }
.sn-who-chip { padding: 8px 15px 8px 9px; font-size: 0.86rem; }
.sn-amount-chip { padding: 13px 22px; font-size: 1.02rem; border-radius: 16px; font-variant-numeric: tabular-nums; }
.sn-type-btn:hover, .sn-who-chip:hover, .sn-amount-chip:hover {
  color: var(--text-primary); border-color: var(--border-strong); transform: translateY(-1px);
}
.sn-type-btn.active, .sn-who-chip.active, .sn-amount-chip.active {
  background: linear-gradient(135deg, #7c3aed, #6d28d9); border-color: transparent; color: #fff; font-weight: 700;
  box-shadow: 0 9px 22px -9px rgba(124, 58, 237, 0.65);
}

/* Support modal header (🙌 + title) */
.sn-support-head { display: flex; align-items: center; gap: 14px; margin-bottom: 2px; }
.sn-support-emoji { font-size: 2rem; line-height: 1; }
.sn-support-who { margin-top: 2px; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1180px) {
  .sn-course-grid { grid-template-columns: minmax(0, 1fr) 350px; gap: 20px; }
}
@media (max-width: 940px) {
  .sn-catalog { padding: 0 18px 64px; }
  .sn-cats { margin: 0 -18px; padding-left: 18px; padding-right: 18px; }
  .sn-rail { margin: 0 -18px; padding: 4px 18px 8px; }
  .sn-hero { padding: 44px 0 30px; }

  .sn-course { padding: 14px 14px 70px; }
  .sn-course-grid { grid-template-columns: 1fr; }
  .sn-viewer-wrap, .sn-course-rail, .sn-course-tabs-wrap { grid-column: 1; }
  .sn-course-rail { grid-row: auto; position: static; max-height: none; overflow: visible; }
  .sn-headline { padding-top: 18px; }
  .sn-lesson-bar { flex-direction: column; gap: 10px; }
  .sn-lesson-bar-actions { padding-top: 0; }
}
@media (max-width: 600px) {
  .sn-grid { grid-template-columns: 1fr; gap: 26px; }
  .sn-rail-card { flex: 0 0 250px; }
  .sn-hero h1 { font-size: 1.9rem; }
  .sn-hero-stats { gap: 22px; }
  .sn-row3 { flex-wrap: wrap; }
  .sn-viewer-stage, .sn-card-cover, .sn-rail-cover { border-radius: 12px; }
  .sn-contrib-thumb { width: 84px; }
}