/* ============================================================
   Course pages override — applies the design system to the
   dynamic course pages (curso-*.html) without touching the JS.
   Keeps all legacy class names but restyles them.
   ============================================================ */

/* Per-page accent already set via body[data-accent]. Defaults to level 1. */

/* Page hero variant (compact, dark) */
.course-hero {
  background: linear-gradient(135deg, var(--dark), #14141a);
  padding: clamp(36px, 6vw, 64px) 0 clamp(28px, 5vw, 48px);
  text-align: center;
  position: relative;
  overflow: hidden;
  color: #fff;
}
.course-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 100%, color-mix(in srgb, var(--accent) 25%, transparent), transparent 70%);
  pointer-events: none;
}
.course-hero-inner { position: relative; z-index: 1; }
.course-hero .hero-tag {
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  border-color: color-mix(in srgb, var(--accent) 30%, transparent);
}
.course-hero .hero-title {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: clamp(26px, 5vw, 44px);
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}
.course-hero .hero-title em { color: var(--accent); font-style: normal; }
.course-hero .hero-sub {
  color: rgba(255,255,255,0.7);
  font-size: clamp(14px, 1.5vw, 16px);
  max-width: 540px;
  margin: 0 auto clamp(20px, 3vw, 30px);
  line-height: 1.7;
}
.course-hero .hero-stats {
  display: flex;
  gap: clamp(18px, 3vw, 32px);
  justify-content: center;
  flex-wrap: wrap;
}
.course-hero .stat { text-align: center; }
.course-hero .stat-num,
.course-hero .stat-number {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}
.course-hero .stat-label {
  font-size: 11px;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-top: 4px;
}

/* Progress bar (header-mini variant) */
.prog-mini { display: flex; align-items: center; gap: 10px; }
.prog-mini-bar {
  width: clamp(80px, 18vw, 140px);
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}
.prog-mini-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width .4s;
}
.prog-mini-label {
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
  font-weight: 600;
}

/* Module tab bar (sticky horizontal nav) */
.mod-nav-wrap {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: var(--header-h);
  z-index: 50;
  overflow-x: auto;
  scrollbar-width: none;
  box-shadow: var(--shadow-sm);
}
.mod-nav-wrap::-webkit-scrollbar { display: none; }
.mod-nav {
  display: flex;
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 clamp(12px, 3vw, 24px);
  gap: 4px;
}
.mod-tab {
  flex-shrink: 0;
  padding: 14px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: color .2s, border-color .2s;
  white-space: nowrap;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  user-select: none;
}
.mod-tab:hover { color: var(--text); }
.mod-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.mod-tab.done {
  color: var(--success);
}
.mod-tab.done::after { content: ' ✓'; }

/* Content container */
.content {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: clamp(24px, 4vw, 40px) clamp(16px, 4vw, 24px) clamp(48px, 8vw, 72px);
}

/* Module header card */
.mod-header {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: clamp(20px, 3vw, 32px);
  padding: clamp(20px, 3vw, 28px);
  background: linear-gradient(135deg, var(--dark), #14141a);
  border-radius: var(--r-lg);
  color: #fff;
  box-shadow: var(--shadow-md);
}
.mod-header .mod-icon { font-size: clamp(32px, 4vw, 42px); flex-shrink: 0; }
.mod-header .mod-num {
  font-size: 11px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.mod-header .mod-title {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 800;
  margin-bottom: 6px;
  color: #fff;
}
.mod-header .mod-desc {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
}

@media (max-width: 540px) {
  .mod-header { flex-direction: column; gap: 12px; padding: 20px; }
}

/* Lesson card */
.lesson {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color .2s, box-shadow .2s;
}
.lesson:hover { border-color: var(--accent); }
.lesson.open {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}
.lesson.completed { border-color: var(--success); }
.lesson.completed .lesson-ico { background: var(--success); color: #fff; border-color: var(--success); }

.lesson-hd {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px clamp(16px, 2.4vw, 20px);
  cursor: pointer;
  user-select: none;
}
.lesson-ico {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
  transition: background .2s, color .2s, border-color .2s;
}
.lesson.open .lesson-ico {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.lesson-info { flex: 1; min-width: 0; }
.lesson-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 2px;
  color: var(--text);
  line-height: 1.35;
}
.lesson-meta { font-size: 12px; color: var(--muted); }
.lesson-arr {
  color: var(--muted);
  font-size: 22px;
  transition: transform .3s, color .3s;
  font-family: var(--font-sans), system-ui, sans-serif;
  flex-shrink: 0;
}
.lesson.open .lesson-arr { transform: rotate(90deg); color: var(--accent); }

.lesson-bd {
  display: none;
  padding: 6px clamp(16px, 2.4vw, 20px) 22px;
}
.lesson.open .lesson-bd { display: block; }

/* Step inside lesson */
.step {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  background: var(--bg);
  border-radius: var(--r-sm);
  padding: 14px;
  border-left: 3px solid var(--border);
  transition: border-left-color .2s, background .2s;
}
.step:hover { border-left-color: var(--accent); background: color-mix(in srgb, var(--accent) 3%, var(--bg)); }
.step-n {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}
.step-content { flex: 1; min-width: 0; }
.step-label {
  font-size: 10px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.step-text {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-soft);
  word-break: break-word;
}
.step-text strong { color: var(--text); font-weight: 700; }
.step-text code {
  background: #f0ede8;
  padding: 2px 7px;
  border-radius: 5px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent);
  border: 1px solid var(--border);
}

/* Prompt example block */
.prompt-box {
  background: var(--dark);
  border-radius: var(--r-sm);
  padding: 16px 18px;
  margin: 14px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: #c8f0c8;
  line-height: 1.7;
  position: relative;
  border: 1px solid color-mix(in srgb, var(--accent) 50%, transparent);
  overflow-x: auto;
}
.prompt-box::before {
  content: '✦ Exemplo de prompt';
  position: absolute;
  top: -10px;
  left: 14px;
  background: var(--accent);
  color: #fff;
  font-size: 10px;
  padding: 3px 10px;
  border-radius: 8px;
  font-family: var(--font-sans), system-ui, sans-serif;
  font-weight: 700;
  letter-spacing: 0.5px;
}
.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  color: #ddd;
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-family: var(--font-sans), system-ui, sans-serif;
  transition: background .2s;
}
.copy-btn:hover { background: rgba(255,255,255,0.2); color: #fff; }

/* Tip / warn boxes */
.tip {
  background: color-mix(in srgb, var(--success) 6%, var(--card));
  border: 1px solid color-mix(in srgb, var(--success) 25%, var(--border));
  border-left: 4px solid var(--success);
  border-radius: var(--r-sm);
  padding: 12px 16px;
  margin: 14px 0;
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.6;
}
.warn {
  background: color-mix(in srgb, var(--warning) 6%, var(--card));
  border: 1px solid color-mix(in srgb, var(--warning) 30%, var(--border));
  border-left: 4px solid var(--warning);
  border-radius: var(--r-sm);
  padding: 12px 16px;
  margin: 14px 0;
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.6;
}

/* Complete button */
.complete-btn {
  width: 100%;
  padding: 14px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  margin-top: 16px;
  transition: background .2s, transform .2s, box-shadow .2s;
}
.complete-btn:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 10px 24px color-mix(in srgb, var(--accent) 30%, transparent); }
.complete-btn.done {
  background: var(--success);
  cursor: default;
  transform: none;
}
.complete-btn.done:hover { box-shadow: none; }

/* Quiz block */
.quiz-block {
  background: linear-gradient(135deg, var(--card), color-mix(in srgb, var(--accent) 4%, var(--card)));
  border: 2px solid var(--accent);
  border-radius: var(--r-lg);
  padding: clamp(20px, 3vw, 28px);
  margin: 24px 0;
  transition: opacity .3s;
  box-shadow: var(--shadow-md);
}
.quiz-block.disabled { opacity: 0.55; pointer-events: none; filter: grayscale(0.4); }
.quiz-block.disabled .quiz-lock-message { display: block; }
.quiz-lock-message {
  display: none;
  text-align: center;
  margin-top: 14px;
  padding: 14px;
  background: var(--bg);
  border-radius: var(--r-sm);
  color: var(--muted);
  font-size: 13px;
}
.quiz-header { margin-bottom: 20px; }
.quiz-badge {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 8px;
}
.quiz-title {
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: clamp(17px, 2.2vw, 20px);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 4px;
}
.quiz-subtitle { font-size: 13px; color: var(--muted); margin-bottom: 18px; }
.quiz-q {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 18px;
  margin-bottom: 12px;
}
.qq-num {
  font-size: 10px;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}
.qq-text {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
  line-height: 1.5;
  color: var(--text);
}
.qq-opts { display: grid; gap: 8px; }
.qq-opt {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  transition: border-color .2s, background .2s;
  color: var(--text-soft);
}
.qq-opt:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 5%, var(--bg));
}
.qq-opt input {
  accent-color: var(--accent);
  margin: 0;
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}
.qq-opt.correct {
  background: color-mix(in srgb, var(--success) 12%, var(--card));
  border-color: var(--success);
  color: var(--success);
}
.qq-opt.wrong {
  background: color-mix(in srgb, var(--danger) 10%, var(--card));
  border-color: var(--danger);
  color: var(--danger);
}
.quiz-submit {
  width: 100%;
  padding: 14px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-weight: 700;
  font-family: var(--font-sans), system-ui, sans-serif;
  font-size: 14px;
  cursor: pointer;
  margin-top: 10px;
  transition: background .2s, transform .2s, box-shadow .2s;
}
.quiz-submit:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px color-mix(in srgb, var(--accent) 30%, transparent);
}
.quiz-submit:disabled { background: var(--border-strong); cursor: not-allowed; color: var(--muted); }
.quiz-result {
  padding: 14px;
  margin: 14px 0;
  border-radius: var(--r-sm);
  text-align: center;
  font-weight: 600;
  font-size: 14px;
}
.quiz-result.pass {
  background: color-mix(in srgb, var(--success) 10%, var(--card));
  border: 1px solid var(--success);
  color: var(--success);
}
.quiz-result.fail {
  background: color-mix(in srgb, var(--danger) 10%, var(--card));
  border: 1px solid var(--danger);
  color: var(--danger);
}

/* Certificate */
.certificate-section { margin-top: 48px; animation: fadeIn 0.5s ease; }
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@media print {
  * { visibility: hidden !important; }
  #cert-card, #cert-card * { visibility: visible !important; }
  #cert-card {
    position: fixed !important;
    top: 0; left: 0;
    width: 100vw;
    min-height: 100vh;
    margin: 0;
    border-radius: 0;
    padding: 40px 32px !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}

/* === Course-aside layout (used by sidebar variants) === */
.legacy-aside { display: none; }

/* Mobile responsiveness for course pages */
@media (max-width: 640px) {
  .mod-tab { padding: 12px 10px; font-size: 11px; }
  .mod-header { padding: 18px; }
  .lesson-hd { gap: 10px; padding: 14px 16px; }
  .lesson-ico { width: 36px; height: 36px; font-size: 16px; }
  .lesson-title { font-size: 14px; }
  .step { padding: 12px; gap: 10px; }
  .step-text { font-size: 13.5px; }
}

/* ============================================================
   ENTERPRISE LESSON LAYOUT V2 — Smart Content Renderer
   ============================================================ */

/* Module header refinado com barra de progresso */
.mod-header {
  background: linear-gradient(135deg, var(--card), var(--bg-soft));
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.mod-header .mod-icon {
  background: var(--accent-soft);
  border-radius: 14px;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
}
.mod-header .mod-header-info { flex: 1; min-width: 0; }
.mod-header .mod-num {
  color: var(--accent);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.mod-header .mod-title {
  color: var(--text);
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 6px 0 8px;
}
.mod-header .mod-desc {
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.6;
  margin-bottom: 18px;
}
.mod-progress {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.mod-progress-bar {
  flex: 1;
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
  min-width: 160px;
}
.mod-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 60%, var(--accent4)));
  border-radius: 4px;
  transition: width .6s cubic-bezier(.4,0,.2,1);
}
.mod-progress-label {
  font-size: 13px;
  color: var(--muted);
  font-weight: 500;
  white-space: nowrap;
}

/* Lesson card refinado */
.lesson {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color .25s, box-shadow .25s, transform .25s;
}
.lesson:hover { border-color: var(--border-strong); }
.lesson.open {
  border-color: var(--accent);
  box-shadow: 0 4px 20px color-mix(in srgb, var(--accent) 12%, transparent);
}
.lesson.completed { border-color: color-mix(in srgb, var(--success) 50%, var(--border)); }
.lesson.completed .lesson-ico {
  background: var(--success);
  color: #fff;
  border-color: var(--success);
}

.lesson-hd {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px clamp(18px, 2.6vw, 24px);
  cursor: pointer;
  user-select: none;
  transition: background .15s;
}
.lesson-hd:hover { background: color-mix(in srgb, var(--accent) 3%, transparent); }

/* ÍCONE PREMIUM DA AULA — círculo gradient com ring de progresso */
.lesson-ico {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--card), var(--bg-soft));
  border: 1.5px solid var(--border);
  color: var(--text-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  flex-shrink: 0;
  transition: all .35s cubic-bezier(.4,0,.2,1);
  font-variant-numeric: tabular-nums;
  position: relative;
  letter-spacing: -0.02em;
  box-shadow: var(--shadow-xs);
}
.lesson-ico::before {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 1.5px solid transparent;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 50%, var(--accent4))) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity .3s;
}
.lesson:hover .lesson-ico {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
  color: var(--accent);
  transform: scale(1.03);
}
.lesson.open .lesson-ico {
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 70%, var(--accent4)));
  border-color: transparent;
  color: #fff;
  box-shadow:
    0 0 0 4px color-mix(in srgb, var(--accent) 12%, transparent),
    0 8px 24px -4px color-mix(in srgb, var(--accent) 35%, transparent);
  transform: scale(1.05);
}
.lesson.open .lesson-ico::before { opacity: 0; }
.lesson.completed .lesson-ico {
  background: linear-gradient(135deg, var(--success), #047857);
  border-color: transparent;
  color: #fff;
  box-shadow:
    0 0 0 3px color-mix(in srgb, var(--success) 15%, transparent),
    0 4px 14px -3px color-mix(in srgb, var(--success) 30%, transparent);
}
.lesson.completed .lesson-ico::before { opacity: 0; }

.lesson-info { flex: 1; min-width: 0; }
.lesson-pill {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--bg-soft);
  padding: 3px 9px;
  border-radius: 999px;
  margin-bottom: 6px;
}
.lesson-title {
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.015em;
  line-height: 1.35;
  margin-bottom: 6px;
}
.lesson-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.lesson-meta-item {
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
}
.lesson-arr {
  color: var(--muted);
  flex-shrink: 0;
  transition: transform .3s cubic-bezier(.4,0,.2,1), color .2s;
  display: inline-flex;
}
.lesson.open .lesson-arr { transform: rotate(180deg); color: var(--accent); }

.lesson-bd {
  display: none;
  padding: 0 clamp(18px, 2.6vw, 28px) clamp(20px, 3vw, 28px);
  animation: lsExpand .4s cubic-bezier(.4,0,.2,1);
}
.lesson.open .lesson-bd { display: block; }

@keyframes lsExpand {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Video slot */
.ls-video {
  margin: 0 0 24px;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--dark);
  aspect-ratio: 16 / 9;
  position: relative;
}
.ls-video iframe { width: 100%; height: 100%; border: 0; }
.ls-video-frame { width: 100%; height: 100%; }
.ls-video-frame iframe { width: 100%; height: 100%; border: 0; }

.ls-video-placeholder {
  margin: 0 0 24px;
  background: linear-gradient(135deg, var(--bg-soft), var(--card));
  border: 1px dashed var(--border-strong);
  border-radius: var(--r-md);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: center;
  color: var(--muted);
}
.ls-video-placeholder svg { color: var(--accent); opacity: 0.5; flex-shrink: 0; }
.ls-video-placeholder-t {
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
  margin-bottom: 2px;
}
.ls-video-placeholder-s {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* Smart content container */
.ls-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* Seção (header + texto) */
.ls-section {
  padding: 18px 0 6px;
  border-top: 1px solid var(--border);
  margin-top: 12px;
}
.ls-section:first-child {
  border-top: none;
  padding-top: 4px;
  margin-top: 0;
}
.ls-section-h {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.ls-section-emoji {
  font-size: 20px;
  line-height: 1;
  flex-shrink: 0;
}
.ls-section-title {
  font-size: clamp(13px, 1.4vw, 14px);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}
.ls-section-text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-soft);
  margin: 0;
}

/* Parágrafo de continuação */
.ls-paragraph {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-soft);
  margin: 0 0 4px;
}
.ls-paragraph strong { color: var(--text); font-weight: 600; }

/* Lista de bullets */
.ls-list {
  list-style: none;
  margin: 6px 0 10px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.ls-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text-soft);
}
.ls-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.ls-list li strong { color: var(--text); font-weight: 600; }

/* PASSO (📌 PASSO N) */
.ls-passo {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--r-sm);
  padding: 16px 18px;
  margin: 8px 0;
}
.ls-passo-badge {
  background: var(--accent);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: 6px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 2px;
}
.ls-passo-body { flex: 1; min-width: 0; }
.ls-passo-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
  line-height: 1.4;
}
.ls-passo-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-soft);
}
.ls-passo-text code {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent);
}

/* Exercício */
.ls-exercise {
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent5) 8%, var(--card)), var(--card));
  border: 1px solid color-mix(in srgb, var(--accent5) 30%, var(--border));
  border-left: 4px solid var(--accent5);
  border-radius: var(--r-sm);
  padding: 16px 18px;
  margin: 14px 0;
}
.ls-exercise-badge {
  display: inline-block;
  background: var(--accent5);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 3px 9px;
  border-radius: 4px;
  margin-bottom: 8px;
}
.ls-exercise-text {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text-soft);
  font-weight: 500;
}

/* Resultado */
.ls-result {
  background: linear-gradient(135deg, color-mix(in srgb, var(--success) 8%, var(--card)), var(--card));
  border: 1px solid color-mix(in srgb, var(--success) 30%, var(--border));
  border-left: 4px solid var(--success);
  border-radius: var(--r-sm);
  padding: 16px 18px;
  margin: 14px 0;
}
.ls-result-badge {
  display: inline-block;
  background: var(--success);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 3px 9px;
  border-radius: 4px;
  margin-bottom: 8px;
}
.ls-result-text {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text-soft);
  font-weight: 500;
}

/* Aviso (⚠️) */
.ls-warn {
  display: flex;
  gap: 12px;
  background: color-mix(in srgb, var(--warning) 7%, var(--card));
  border: 1px solid color-mix(in srgb, var(--warning) 30%, var(--border));
  border-left: 4px solid var(--warning);
  border-radius: var(--r-sm);
  padding: 14px 18px;
  margin: 14px 0;
}
.ls-warn-icon { font-size: 18px; line-height: 1; flex-shrink: 0; }
.ls-warn-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-soft);
}
.ls-warn-text strong { color: var(--text); }

/* Bloco de código / prompt */
.ls-code {
  background: var(--dark);
  border-radius: var(--r-md);
  margin: 14px 0;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}
.ls-code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.ls-code-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
  text-transform: uppercase;
}
.ls-code-copy {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.7);
  font-size: 11px;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: background .15s, color .15s;
}
.ls-code-copy:hover {
  background: rgba(255,255,255,0.12);
  color: #fff;
}
.ls-code-copy.copied {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}
.ls-code-body {
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: #c8f0c8;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
  margin: 0;
}

/* Dica do instrutor (tip) */
.ls-tip {
  margin: 20px 0 6px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 6%, var(--card)), var(--card));
  border: 1px solid color-mix(in srgb, var(--accent) 25%, var(--border));
  border-left: 4px solid var(--accent);
  border-radius: var(--r-md);
  padding: 16px 20px;
}
.ls-tip-badge {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.ls-tip-text {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text-soft);
  font-style: italic;
}
.ls-tip-text strong { color: var(--text); font-style: normal; }

/* Material complementar */
.ls-resources {
  margin: 20px 0 6px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 16px 20px;
}
.ls-resources-h {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}
.ls-resources-list {
  list-style: none;
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
}
.ls-resources-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}
.ls-resources-list a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  flex: 1;
}
.ls-resources-list a:hover { text-decoration: underline; }
.ls-resource-type {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  background: var(--card);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

/* Rodapé da aula */
.lesson-foot {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
}
.complete-btn {
  background: var(--accent);
  color: #fff;
  border: 1px solid var(--accent);
  padding: 11px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background .15s, transform .15s, box-shadow .15s;
  letter-spacing: -0.01em;
}
.complete-btn:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.complete-btn.done {
  background: var(--success);
  border-color: var(--success);
  cursor: default;
}
.complete-btn.done:hover { transform: none; box-shadow: none; }

/* Quiz block refinado */
.quiz-block {
  background: linear-gradient(135deg, var(--card), color-mix(in srgb, var(--accent) 4%, var(--card)));
  border: 1px solid color-mix(in srgb, var(--accent) 25%, var(--border));
  border-radius: var(--r-lg);
  padding: clamp(24px, 3.5vw, 32px);
  margin: 32px 0;
  box-shadow: var(--shadow-sm);
}
.quiz-header { margin-bottom: 24px; }
.quiz-badge {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.quiz-title {
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.025em;
  margin-bottom: 6px;
}
.quiz-subtitle {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.55;
}
.quiz-q {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 20px;
  margin-bottom: 12px;
}
.qq-num {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.qq-text {
  font-size: 15.5px;
  font-weight: 500;
  margin-bottom: 14px;
  line-height: 1.5;
  color: var(--text);
}
.qq-opts { display: grid; gap: 8px; }
.qq-opt {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  cursor: pointer;
  font-size: 14px;
  color: var(--text-soft);
  transition: border-color .15s, background .15s;
  line-height: 1.4;
}
.qq-opt:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 4%, var(--card));
}
.qq-opt input {
  accent-color: var(--accent);
  margin: 0;
  flex-shrink: 0;
  margin-top: 2px;
  width: 16px;
  height: 16px;
}
.qq-opt span { flex: 1; }
.qq-opt.correct {
  background: color-mix(in srgb, var(--success) 10%, var(--card));
  border-color: var(--success);
  color: var(--success);
  font-weight: 600;
}
.qq-opt.wrong {
  background: color-mix(in srgb, var(--danger) 10%, var(--card));
  border-color: var(--danger);
  color: var(--danger);
  font-weight: 600;
}
.quiz-submit {
  width: 100%;
  padding: 14px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-weight: 600;
  font-family: var(--font-sans);
  font-size: 15px;
  cursor: pointer;
  margin-top: 12px;
  transition: background .15s, transform .15s;
  letter-spacing: -0.01em;
}
.quiz-submit:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
}
.quiz-submit:disabled {
  background: var(--border-strong);
  cursor: not-allowed;
  color: var(--muted);
}
.quiz-result {
  padding: 16px;
  margin: 16px 0;
  border-radius: var(--r-sm);
  text-align: center;
  font-weight: 600;
  font-size: 14.5px;
}
.quiz-result.pass {
  background: color-mix(in srgb, var(--success) 12%, var(--card));
  border: 1px solid var(--success);
  color: var(--success);
}
.quiz-result.fail {
  background: color-mix(in srgb, var(--danger) 12%, var(--card));
  border: 1px solid var(--danger);
  color: var(--danger);
}
.quiz-block.disabled { opacity: 0.55; pointer-events: none; filter: grayscale(0.4); }
.quiz-lock-message {
  display: none;
  text-align: center;
  margin-top: 16px;
  padding: 14px;
  background: var(--bg-soft);
  border-radius: var(--r-sm);
  color: var(--muted);
  font-size: 13px;
}
.quiz-block.disabled .quiz-lock-message { display: block; }

/* Animação reveal escalonada */
@keyframes lsRevealIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.ls-reveal {
  animation: lsRevealIn .5s cubic-bezier(.4,0,.2,1) both;
}

@media (prefers-reduced-motion: reduce) {
  .ls-reveal,
  .lesson.open .lesson-bd { animation: none; }
}

/* ============================================================
   VÍDEOS NARRADOS NAS AULAS (HTML5 + legendas .vtt)
   ============================================================ */
.ls-videos { display: flex; flex-direction: column; gap: 16px; margin-bottom: 22px; }
.ls-video-frame {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.ls-video-h {
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--bg-soft), var(--card));
  border-bottom: 1px solid var(--border);
}
.ls-video-badge {
  background: var(--accent);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  border-radius: 999px;
}
.ls-video-t { font-weight: 600; font-size: 14.5px; color: var(--text); letter-spacing: -0.01em; }
.ls-video-frame video {
  width: 100%;
  display: block;
  background: #000;
  max-height: 540px;
}
.ls-video-frame video::-webkit-media-controls-panel { background: rgba(15,23,42,0.8); }
.ls-video-desc {
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.6;
  border-top: 1px solid var(--border);
}
.ls-video-transcript {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  font-size: 13.5px;
}
.ls-video-transcript summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--accent);
  user-select: none;
  padding: 4px 0;
}
.ls-video-transcript summary:hover { color: var(--accent-hover); }
.ls-video-transcript > div {
  margin-top: 10px;
  padding: 12px 14px;
  background: var(--bg-soft);
  border-radius: 8px;
  font-size: 13.5px;
  color: var(--text-soft);
  line-height: 1.7;
  max-height: 280px;
  overflow-y: auto;
}
.ls-figure {
  margin: 0;
  padding: 0;
  background: var(--card);
}
.ls-figure img { width: 100%; display: block; border-radius: var(--r-md) var(--r-md) 0 0; }
.ls-figure figcaption {
  padding: 14px 16px;
  font-size: 14px;
  color: var(--text-soft);
  line-height: 1.55;
  border-top: 1px solid var(--border);
}

/* Mobile */
@media (max-width: 640px) {
  .lesson-hd { gap: 12px; padding: 14px 16px; }
  .lesson-ico { width: 32px; height: 32px; font-size: 13px; }
  .lesson-bd { padding: 0 16px 20px; }
  .ls-passo { padding: 14px; }
  .ls-section { padding: 14px 0 4px; }
  .quiz-block { padding: 20px; }
  .quiz-q { padding: 16px; }
  .mod-header .mod-icon { width: 52px; height: 52px; font-size: 26px; }
  .mod-progress { flex-direction: column; align-items: stretch; }
  .mod-progress-bar { min-width: 0; }
}