:root {
    --bg: #002b45;
    --text: #111;
    --card: #fff;
    --muted: #555;
    --accent: #003b5c;
    --accent-contrast: #fff;
    --titulo: #f1f1f1;
  }
  .dark-theme {
    --bg: #0f1113;
    --text: #f2f2f2;
    --card: #1f1f1f;
    --muted: #ccc;
    --accent: #00bfff;
    --accent-contrast: #111;
    --titulo: #00bfff;
  }

  body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg);
    color: var(--text);
    margin: 0;
    overflow-x: hidden;
    position: relative;
    padding-bottom: 200px; /* espaço pro footer e ondas */
  }

  /* Ondas do fundo */
  .waves {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 200px;
    overflow: hidden;
    line-height: 0;
    z-index: -1;
  }
  .waves svg {
    position: relative;
    display: block;
    width: calc(150% + 1.3px);
    height: 200px;
  }
  .wave1 {
    fill: var(--accent);
    opacity: 0.8;
    animation: moveWave 10s linear infinite;
  }
  .wave2 {
    fill: var(--accent);
    opacity: 0.5;
    animation: moveWave 15s linear infinite reverse;
  }
  @keyframes moveWave {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
  }

/* --- MELHORIAS VISUAIS NOS TÓPICOS --- */

.combo-card p {
  color: var(--text);
  margin: 8px 0;
  font-size: 0.95rem;
  line-height: 1.6;
  text-align: justify;
  padding: 0 10px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  transition: transform 0.2s ease, color 0.2s ease;
}

.combo-card p:hover {
  transform: translateX(4px);
  color: var(--accent);
}

/* Ícones mais destacados e alinhados */
.combo-card p i {
  color: var(--accent);
  font-size: 1rem;
}

/* Preço mais visível */
.combo-card h4 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  margin-top: 15px;
}

/* Efeito ao passar o mouse sobre o card */
.combo-card {
  background: var(--card);
  border-radius: 18px;
  padding: 30px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.combo-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.18);
}

/* Botão mais atraente */
.combo-card .btn-selecionar, .btn-comprar{
  background: linear-gradient(135deg, var(--accent), #00a2d6);
  color: var(--accent-contrast);
  padding: 13px 22px;
  border-radius: 30px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border: none;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.combo-card .btn-selecionar, .btn-comprar:hover {
  transform: scale(1.08);
  opacity: 0.9;
}
  
  .sec-title {
    color: var(--titulo);
    text-shadow: 0 2px 8px rgba(0,0,0,.35);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 30px;
    text-align: center;
  }
    .wave-background {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 40vh;
      z-index: -1;
      pointer-events: none;
    }
    
@media (max-width: 768px) {
  .combo-card {
    padding: 20px;
    margin: 0 10px;
  }

  .combo-card h3 {
    font-size: 1.2rem;
  }

  .combo-card .btn-selecionar {
    font-size: 1rem;
    padding: 12px;
  }
}
    
.trocar-planos {
  display: flex;
  justify-content: center;
  margin: 40px 0;
}

.plan-selector {
  position: relative;
  display: inline-block;
  width: 280px; /* largura fixa agradável */
  max-width: 90%;
  font-size: 1rem;
  user-select: none;
}

.plan-input {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 10px 15px;
  cursor: pointer;
  transition: border-color 0.3s ease;
}

.plan-input:hover {
  border-color: var(--accent-contrast);
}

.plan-input i {
  transition: transform 0.3s ease;
}

.plan-dropdown {
  position: absolute;
  top: calc(100% + 5px);
  left: 0;
  width: 100%;
  background: var(--card);
  border: 1px solid var(--accent);
  border-radius: 8px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.15);
  padding: 0;
  margin: 0;
  list-style: none;
  z-index: 999;
  display: none;
  max-height: 220px;
  overflow-y: auto;
}

.plan-dropdown li {
  padding: 12px 15px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.plan-dropdown li:hover {
  background: var(--accent);
  color: var(--accent-contrast);
}


.barra-informacoes {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
  margin: 20px auto 10px;
  max-width: 1000px;
  padding: 20px;
  background: var(--card);
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.08);
}

.barra-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
}

.barra-item i {
  font-size: 1.2rem;
  color: var(--accent);
}

/* Container principal */
.produto-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px 15px;
}

/* Card principal */
.produto-card {
  background: var(--card);
  border-radius: 18px;
  padding: 40px 30px;
  max-width: 850px;
  width: 100%;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* Conteúdo em duas colunas */
.produto-conteudo {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 30px;
}

/* Imagem do produto */
.produto-imagem img {
  width: 280px;
  max-width: 100%;
  border-radius: 16px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
  transition: transform 0.3s ease;
}
.produto-imagem img:hover {
  transform: scale(1.05);
}

/* Texto e preço */
.produto-info {
  flex: 1;
  text-align: left;
}

.produto-info h1 {
  color: var(--accent);
  font-size: 1.8rem;
  margin-bottom: 15px;
}

.produto-info p {
  color: var(--text);
  font-size: 1.05rem;
  line-height: 1.6;
  margin-bottom: 25px;
  text-align: justify;
}

.preco-box {
  margin-bottom: 20px;
}

.preco {
  font-size: 2rem;
  font-weight: bold;
  color: var(--accent);
  text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

/* Responsivo */
@media (max-width: 768px) {
  .produto-conteudo {
    flex-direction: column;
    text-align: center;
  }

  .produto-info p {
    text-align: center;
  }
}