/* RESET */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
  font-size: 1.4rem;
}

body {
  background: #f8fafc;
  color: #1f2937;
  line-height: 1.7;
}

/* MENU FIXO */
.menu {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(8px);
  padding: 12px 0;
  display: flex;
  justify-content: center;
  gap: 20px;
  z-index: 1000;
}

.menu a {
  color: #e5e7eb;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 6px 10px;
  border-radius: 6px;
  transition: all 0.3s ease;
}

.menu a:hover {
  background: #2563eb;
  color: #fff;
}

/* HERO */
.hero {
  padding: 140px 20px 100px;
  text-align: center;
  background: linear-gradient(135deg, #1e293b, #0f172a);
  color: #fff;
  height: 100vh;
}

.hero h1 {
  font-size: 2.6rem;
  margin-bottom: 15px;
}

.hero p {
  font-size: 1.2rem;
  color: #cbd5f5;
  max-width: 60rem;
  margin: auto;
}

.container{
    min-height: 90vh;
}
/* SEÇÕES */
.section {
  max-width: 75%;
  margin: auto;
  padding: 80px 20px;
}

.section h2 {
  font-size: 2rem;
  margin-bottom: 20px;
  color: #0f172a;
}

.section p {
  font-size: 1.05rem;
  color: #374151;
  padding: 1rem 0;
}

/* DESTAQUE */
.destaque {
  background: #eef2ff;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

/* BOTÕES */
.acoes {
  margin-top: 30px;
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.botao {
  background: #2563eb;
  color: #fff;
  padding: 12px 20px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.botao:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.35);
}

.disciplina-badge {
  display: inline-block;
  background-color: #e0e7ff;
  color: #3730a3;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.85rem;
  margin-bottom: 10px;
  width: fit-content;
}

.card-content {
  flex-grow: 1;
  
}
.card-actions {
  margin-top: 15px;
}
/* CARDS */
.cards {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 25px;
}

.card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: #fff;
  border-radius: 16px;
  padding: 25px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.06);
  transition: transform 0.25s ease;
}

.card:hover {
  transform: translateY(-6px);
}

.card h3 {
  margin-bottom: 10px;
  color: #111827;
}

.card a {
  display: inline-block;
  margin-top: 8px;
  color: #2563eb;
  font-weight: 500;
  text-decoration: none;
}

.card a:hover {
  text-decoration: underline;
}

/* LISTAS (ATIVIDADES / LIVROS) */
#lista-atividades h3,
#lista-livros h3 {
  margin-top: 40px;
  margin-bottom: 10px;
  color: #1e293b;
}

#lista-atividades ul,
#lista-livros ul {
  list-style: none;
  padding-left: 0;
}

#lista-atividades li,
#lista-livros li {
  background: #fff;
  margin-bottom: 10px;
  padding: 14px 18px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

#lista-atividades li a {
  color: #2563eb;
  font-weight: 500;
  text-decoration: none;
}

#lista-atividades li a:hover {
  text-decoration: underline;
}

/* FOOTER */
footer {
  background: #0f172a;
  color: #cbd5f5;
  text-align: center;
  padding: 30px 20px;
  font-size: 0.95rem;
}



/* GRID */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}


/* LAYOUT PLAYER */
.player-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 30px;
  align-items: start;
}

/* PLAYER */
.player h2 {
  margin-bottom: 15px;
  color: #111827;
}

.video-wrapper {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 10px 25px rgba(0,0,0,0.15);

}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 16px;
}

/* PLAYLIST */
.playlist {
  background: #ffffff;
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.06);
  border-radius: 16px;
  overflow: hidden;
}

.playlist h3 {
  margin-bottom: 15px;
  color: #1e293b;

}

.playlist-item {
  cursor: pointer;
  padding: 12px;
  border-radius: 10px;
  margin-bottom: 10px;
  transition: background 0.2s;
}

.playlist-item:hover {
  background: #eef2ff;
}

.playlist-item.active {
  background: #2563eb;
  color: #fff;
}
.aluno-card{
  text-align: center;
  box-shadow: 0 6px 20px rgba(0,0,0,0.08);
  transition: transform 0.2s ease;
}
.aluno-card a{
  font-size: 1.1rem;
}
.aluno-card h3{
  margin-bottom: 15px;
}

.aluno-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.25);
}

.logo{
 
  margin-bottom: 15px;
}
/* MOBILE */
@media (max-width: 900px) {
  .player-layout {
    grid-template-columns: 1fr;
  }
}


/* MOBILE */
@media (max-width: 768px) {
  .grid {
    grid-template-columns: 1fr;
  }
}

/* CARD */
.card {
  background: #fff;
  border-radius: 12px;
  padding: 15px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.08);
  transition: transform 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
}

.card h3 {
  margin: 10px 0 5px;
}

.card p {
  font-size: 0.95rem;
  margin-bottom: 10px;
}

.card a {
  color: #0969da;
  font-weight: bold;
  text-decoration: none;
}

.card a:hover {
  text-decoration: underline;
}

/* IMAGEM LIVRO */
.livro-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 8px;
}

/* RESPONSIVO */
@media (max-width: 600px) {
  .hero h1 {
    font-size: 2rem;
  }

  .menu {
    flex-wrap: wrap;
    gap: 10px;
  }
}