* {
  box-sizing: border-box;
  margin: 0;
  padding: 0; 
}

.course-plans-page { width: 100%; }
.plan-explanation { max-width: 850px; margin: 1.5rem auto; line-height: 1.7; color: #bbb; text-align: center; }
.plan-explanation a { color: #00ff00; }
.cards a.btn { display: block; text-decoration: none; }
.plans-hub-brand{display:inline-block;margin-bottom:1.5rem;color:#a4ff90;text-decoration:none;font-weight:700}
.plans-hub-nav{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap;margin:2rem 0 3rem}.plans-hub-nav a{padding:.8rem 1.2rem;border:1px solid #39ff1455;border-radius:.6rem;color:#a4ff90;text-decoration:none}.plans-hub-nav a:hover{background:#39ff1418}
#planos-cursos{scroll-margin-top:2rem}#planos-cursos h2{font-size:1.8rem;line-height:1.3;margin-bottom:1rem}
a:focus-visible,button:focus-visible{outline:2px solid #a4ff90;outline-offset:4px}
html {
  font-size: 15px;
}

body {  
  font-family: 'Inter', 'Montserrat', sans-serif;
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: #050505;
  color: #fff;
  padding: 3rem 1rem;
}

:root {
  --neon-green: #00FF00;
  --neon-green-dim: rgba(0, 255, 0, 0.2);
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-active: rgba(255, 255, 255, 0.05);
  --text-muted: #aaa;
  --border-color: rgba(255, 255, 255, 0.1);
}

header {
  margin-bottom: 3rem;
  text-align: center;
  width: 100%;
}

header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #fff 0%, #aaa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.toggle {
  font-size: 1rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.toggle-btn {
  position: relative;
}

.checkbox {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}
.checkbox:focus-visible + .sub { outline: 2px solid #00ff00; outline-offset: 4px; }

.sub {
  background: #222;
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  height: 2rem;
  width: 4rem;
  border-radius: 2rem;
  padding: 0.3rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.circle {
  background-color: var(--text-muted);
  height: 1.4rem;
  width: 1.4rem;
  border-radius: 50%;
  transition: transform 0.3s cubic-bezier(0.4, 0.0, 0.2, 1), background-color 0.3s ease;
}

.checkbox:checked + .sub {
  border-color: var(--neon-green);
}

.checkbox:checked + .sub .circle {
  transform: translateX(2rem);
  background-color: var(--neon-green);
  box-shadow: 0 0 10px var(--neon-green-dim);
}

.cards {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  max-width: 1200px;
  width: 100%;
  margin: 1rem auto 0;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  width: 100%;
  max-width: 320px;
  backdrop-filter: blur(10px);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-10px);
  border-color: rgba(255, 255, 255, 0.2);
}

.card.active {
  background: var(--bg-card-active);
  border: 1px solid var(--neon-green);
  box-shadow: 0 0 30px var(--neon-green-dim);
  transform: scale(1.05);
  position: relative;
  z-index: 2;
}

.card.active:hover {
  transform: scale(1.05) translateY(-5px);
}

ul {
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  list-style: none;
}

ul li {
  width: 100%;
  text-align: center;
  padding: 1rem 0;
  font-size: 1rem;
  color: var(--text-muted);
}

ul li.pack {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  padding-bottom: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

ul li.price {
  font-size: 2.8rem;
  font-weight: 700;
  color: #fff;
  padding-bottom: 2rem;
}

.card.active ul li.pack,
.card.active ul li.price {
  color: var(--neon-green);
}

.bottom-bar {
  border-bottom: 1px solid var(--border-color);
}

li a {
  text-decoration: none;
  width: 100%;
  display: block;
  margin-top: 1.5rem;
}

.btn {
  width: 100%;
  padding: 1rem;
  border-radius: 0.5rem;
  background: transparent;
  border: 1px solid var(--border-color);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
}

.active-btn {
  background: var(--neon-green);
  border-color: var(--neon-green);
  color: #000;
}

.active-btn:hover {
  background: #00cc00;
  border-color: #00cc00;
  box-shadow: 0 0 15px var(--neon-green-dim);
}

@media (max-width: 1024px) {
  .cards {
    gap: 1.5rem;
  }
  .card.active {
    transform: scale(1);
  }
  .card.active:hover {
    transform: translateY(-5px);
  }
}

@media (max-width: 768px) {
  .cards {
    flex-direction: column;
    gap: 2rem;
  }
  .card {
    max-width: 400px;
  }
}