/* ============================================================
   Teu Curso — Design System & Styles
   Premium Dark Mode Aesthetic
   ============================================================ */

/* ── CSS Variables ───────────────────────────────────────────── */
:root {
  --color-bg-primary:    #0b0f19;
  --color-bg-card:       #111827;
  --color-bg-elevated:   #1a1f2e;
  --color-accent-purple: #a855f7;
  --color-accent-green:  #10b981;
  --color-accent-blue:   #3b82f6;
  --color-accent-cyan:   #06b6d4;
  --color-accent-gold:   #f59e0b;
  --color-text-primary:  #f1f5f9;
  --color-text-secondary:#94a3b8;
  --glow-purple: 0 0 20px rgba(168, 85, 247, 0.3);
  --glow-green:  0 0 20px rgba(16, 185, 129, 0.3);
  --glow-blue:   0 0 20px rgba(59, 130, 246, 0.3);
  --glow-gold:   0 0 20px rgba(245, 158, 11, 0.3);
}

/* ── Base ────────────────────────────────────────────────────── */
html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg-primary);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

/* ── Custom Scrollbar ────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-accent-purple);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #9333ea;
}

/* ── Hero Gradient ───────────────────────────────────────────── */
.hero-gradient {
  background: radial-gradient(ellipse at 50% 0%, rgba(168, 85, 247, 0.15) 0%, transparent 70%),
              radial-gradient(ellipse at 80% 50%, rgba(16, 185, 129, 0.08) 0%, transparent 50%),
              radial-gradient(ellipse at 20% 80%, rgba(59, 130, 246, 0.06) 0%, transparent 50%);
}

/* ── Glass Card ──────────────────────────────────────────────── */
.glass-card {
  background: rgba(17, 24, 39, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(168, 85, 247, 0.1);
  transition: all 0.3s ease;
}

.glass-card:hover {
  border-color: rgba(168, 85, 247, 0.3);
  box-shadow: var(--glow-purple);
  transform: translateY(-4px);
}

/* ── Course / Item Image Placeholder ─────────────────────────── */
.course-img-placeholder {
  background: linear-gradient(135deg, var(--color-bg-elevated), var(--color-bg-card));
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 9 / 16; /* Força proporção 9:16 vertical */
  position: relative;
  overflow: hidden;
}

.course-img-placeholder::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 50%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(168, 85, 247, 0.05), transparent);
  animation: shimmer 3s infinite;
}

@keyframes shimmer {
  0%   { left: -100%; }
  100% { left: 200%; }
}

/* ── CTA Button ──────────────────────────────────────────────── */
.btn-cta {
  background: linear-gradient(135deg, var(--color-accent-purple), #7c3aed);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.5s ease;
}

.btn-cta:hover::before {
  left: 100%;
}

.btn-cta:hover {
  box-shadow: var(--glow-purple);
  transform: translateY(-2px);
}

/* ── E-book CTA Button ──────────────────────────────────────── */
.btn-cta-ebook {
  background: linear-gradient(135deg, var(--color-accent-blue), var(--color-accent-cyan));
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-cta-ebook::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left 0.5s ease;
}

.btn-cta-ebook:hover::before {
  left: 100%;
}

.btn-cta-ebook:hover {
  box-shadow: var(--glow-blue);
  transform: translateY(-2px);
}

/* ── Badge (Platform / Category) ─────────────────────────────── */
.badge {
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  font-weight: 600;
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

.badge-plataforma {
  background: rgba(168, 85, 247, 0.2);
  color: #c084fc;
  border: 1px solid rgba(168, 85, 247, 0.3);
}

/* ── E-book Badge ────────────────────────────────────────────── */
.ebook-badge {
  background: rgba(6, 182, 212, 0.2);
  color: #22d3ee;
  border: 1px solid rgba(6, 182, 212, 0.3);
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  font-weight: 600;
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

/* ── Free (Gratuito) Badge ───────────────────────────────────── */
.badge-gratuito {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
  font-size: 0.7rem;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  font-weight: 600;
  letter-spacing: 0.025em;
  text-transform: uppercase;
}

/* ── Destaque / Featured Badge ───────────────────────────────── */
.destaque-badge {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
  font-size: 0.65rem;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  box-shadow: var(--glow-gold);
}

.destaque-badge::before {
  content: '⭐';
  font-size: 0.6rem;
}

/* ── Filter Buttons ──────────────────────────────────────────── */
.filter-btn {
  background: var(--color-bg-elevated);
  border: 1px solid rgba(148, 163, 184, 0.1);
  color: var(--color-text-secondary);
  transition: all 0.3s ease;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  cursor: pointer;
  white-space: nowrap;
}

.filter-btn:hover {
  border-color: rgba(168, 85, 247, 0.3);
  color: var(--color-text-primary);
}

.filter-btn.active {
  background: linear-gradient(135deg, var(--color-accent-purple), #7c3aed);
  border-color: var(--color-accent-purple);
  color: white;
  box-shadow: var(--glow-purple);
}

/* ── Type Filter Buttons ─────────────────────────────────────── */
.type-filter-btn {
  background: var(--color-bg-elevated);
  border: 1px solid rgba(148, 163, 184, 0.15);
  color: var(--color-text-secondary);
  transition: all 0.3s ease;
  padding: 0.5rem 1.25rem;
  border-radius: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
}

.type-filter-btn:hover {
  border-color: rgba(168, 85, 247, 0.3);
  color: var(--color-text-primary);
  background: rgba(168, 85, 247, 0.1);
}

.type-filter-btn.active {
  background: rgba(168, 85, 247, 0.15);
  border-color: var(--color-accent-purple);
  color: var(--color-accent-purple);
  font-weight: 600;
}

.type-filter-group {
  display: flex;
  gap: 0.5rem;
  padding: 0.25rem;
  background: rgba(11, 15, 25, 0.5);
  border-radius: 0.75rem;
  border: 1px solid rgba(148, 163, 184, 0.08);
}

/* ── Search Input ────────────────────────────────────────────── */
.search-input {
  background: var(--color-bg-elevated);
  border: 1px solid rgba(148, 163, 184, 0.1);
  transition: all 0.3s ease;
}

.search-input:focus {
  border-color: var(--color-accent-purple);
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.1);
  outline: none;
}

/* ── FAQ Accordion ───────────────────────────────────────────── */
.accordion-item {
  background: var(--color-bg-card);
  border: 1px solid rgba(148, 163, 184, 0.1);
  border-radius: 0.75rem;
  overflow: hidden;
  transition: all 0.3s ease;
}

.accordion-item:hover {
  border-color: rgba(168, 85, 247, 0.2);
}

.accordion-header {
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--color-text-primary);
  font-weight: 500;
  user-select: none;
}

.accordion-header:hover {
  color: var(--color-accent-purple);
}

.accordion-icon {
  transition: transform 0.3s ease;
  font-size: 1.25rem;
  color: var(--color-accent-purple);
  flex-shrink: 0;
  margin-left: 1rem;
}

.accordion-item.active .accordion-icon {
  transform: rotate(45deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 1.5rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.accordion-item.active .accordion-content {
  max-height: 500px;
  padding: 0 1.5rem 1.25rem;
}

/* ── Curadoria Box ───────────────────────────────────────────── */
.curadoria-box {
  background: rgba(168, 85, 247, 0.05);
  border-left: 3px solid var(--color-accent-purple);
  border-radius: 0 0.5rem 0.5rem 0;
  padding: 0.75rem 1rem;
  margin-top: 0.75rem;
}

/* ── E-book Description Box ──────────────────────────────────── */
.ebook-desc-box {
  background: rgba(6, 182, 212, 0.05);
  border-left: 3px solid var(--color-accent-cyan);
  border-radius: 0 0.5rem 0.5rem 0;
  padding: 0.75rem 1rem;
  margin-top: 0.75rem;
}

/* ── Section Divider ─────────────────────────────────────────── */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(168, 85, 247, 0.3), transparent);
  margin: 4rem 0;
}

/* ── Fade In Animation ───────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Course / Item Card ──────────────────────────────────────── */
.course-card {
  opacity: 0;
  transform: translateY(20px);
  animation: cardFadeIn 0.5s ease forwards;
}

@keyframes cardFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.course-card:nth-child(1)  { animation-delay: 0.05s; }
.course-card:nth-child(2)  { animation-delay: 0.10s; }
.course-card:nth-child(3)  { animation-delay: 0.15s; }
.course-card:nth-child(4)  { animation-delay: 0.20s; }
.course-card:nth-child(5)  { animation-delay: 0.25s; }
.course-card:nth-child(6)  { animation-delay: 0.30s; }
.course-card:nth-child(7)  { animation-delay: 0.35s; }
.course-card:nth-child(8)  { animation-delay: 0.40s; }
.course-card:nth-child(9)  { animation-delay: 0.45s; }
.course-card:nth-child(10) { animation-delay: 0.50s; }
.course-card:nth-child(11) { animation-delay: 0.55s; }
.course-card:nth-child(12) { animation-delay: 0.60s; }

/* ── No Results ──────────────────────────────────────────────── */
.no-results {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--color-text-secondary);
}

.no-results .icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.no-results h3 {
  color: var(--color-text-primary);
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.no-results p {
  font-size: 0.95rem;
}

/* ── Logo Glow ───────────────────────────────────────────────── */
.logo-glow {
  text-shadow: 0 0 20px rgba(168, 85, 247, 0.5);
}

/* ── Particles ───────────────────────────────────────────────── */
.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--color-accent-purple);
  border-radius: 50%;
  opacity: 0;
  animation: float 6s infinite;
  pointer-events: none;
}

@keyframes float {
  0% {
    opacity: 0;
    transform: translateY(0) scale(0);
  }
  10% {
    opacity: 0.6;
  }
  90% {
    opacity: 0;
  }
  100% {
    opacity: 0;
    transform: translateY(-200px) scale(1);
  }
}

/* ── Pill Badge (Item Count) ─────────────────────────────────── */
.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--color-accent-green);
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* ── Item Card Image ─────────────────────────────────────────── */
.card-img-wrapper {
  position: relative;
  overflow: hidden;
  border-radius: 0.5rem 0.5rem 0 0;
  aspect-ratio: 9 / 16; /* Força proporção 9:16 vertical */
}

.card-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.glass-card:hover .card-img-wrapper img {
  transform: scale(1.05);
}

.card-img-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  z-index: 2;
}

.card-type-indicator {
  font-size: 0.65rem;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card-type-indicator.tipo-curso {
  background: rgba(168, 85, 247, 0.85);
  color: white;
}

.card-type-indicator.tipo-ebook {
  background: rgba(6, 182, 212, 0.85);
  color: white;
}

/* ── Stats Section ───────────────────────────────────────────── */
.stat-card {
  background: var(--color-bg-card);
  border: 1px solid rgba(148, 163, 184, 0.08);
  border-radius: 1rem;
  padding: 1.5rem;
  text-align: center;
  transition: all 0.3s ease;
}

.stat-card:hover {
  border-color: rgba(168, 85, 247, 0.2);
  transform: translateY(-2px);
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-accent-purple), var(--color-accent-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Gradient Text ───────────────────────────────────────────── */
.gradient-text {
  background: linear-gradient(135deg, var(--color-accent-purple), var(--color-accent-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Responsive Adjustments ──────────────────────────────────── */
@media (max-width: 768px) {
  .hero-gradient {
    padding-top: 2rem;
    padding-bottom: 2rem;
  }

  .filter-btn {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
  }

  .type-filter-btn {
    padding: 0.4rem 0.85rem;
    font-size: 0.8rem;
  }

  .accordion-header {
    padding: 1rem 1.25rem;
    font-size: 0.95rem;
  }


}

@media (max-width: 480px) {
  .type-filter-group {
    width: 100%;
    justify-content: center;
  }

  .type-filter-btn {
    flex: 1;
    text-align: center;
    padding: 0.4rem 0.5rem;
    font-size: 0.75rem;
  }
}

/* ── Scroll to Top Button ────────────────────────────────────── */
.scroll-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent-purple), #7c3aed);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 50;
  box-shadow: var(--glow-purple);
}

.scroll-top-btn.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 30px rgba(168, 85, 247, 0.5);
}

/* ── Loading Skeleton ────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg,
    var(--color-bg-elevated) 25%,
    rgba(168, 85, 247, 0.08) 50%,
    var(--color-bg-elevated) 75%);
  background-size: 200% 100%;
  animation: skeletonShimmer 1.5s infinite;
  border-radius: 0.5rem;
}

@keyframes skeletonShimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}
/* ── Custom details/summary transitions ──────────────────────── */
.curadoria-details summary {
  list-style: none; /* Esconde a seta padrão no Chrome/Safari */
}
.curadoria-details summary::-webkit-details-marker {
  display: none; /* Esconde a seta no Firefox */
}
.curadoria-details[open] summary {
  color: var(--color-text-primary);
}
.curadoria-details summary:hover {
  text-decoration: underline;
}

/* ── CTA Buttons Custom Sizing ────────────────────────────────── */
.btn-cta, .btn-cta-ebook {
  max-w: 200px;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
}