@import url('https://fonts.googleapis.com/css2?family=Chakra+Petch:ital,wght@0,600;0,700;1,700&family=Inter:wght@400;500;600&display=swap');    
    :root {
      --bg-dark: #0f1115;
      --bg-card: #181b22;
      --bg-card-hover: #212530;
      --accent: #ff3b30;
      --accent-glow: rgba(255, 59, 48, 0.25);
      --accent-blue: #007aff;
      --text-main: #f0f2f5;
      --text-muted: #9ba3af;
      --border: #2a2f3d;
      --radius: 12px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    }

  body {
    /* La primera capa es el velo negro (10% de opacidad), la segunda es tu imagen */
    background-image: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../img/fondo_general.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    font-family: 'Chakra Petch', sans-serif;
    color: rgb(255, 255, 255);
    margin: 0;
    line-height: 1.6;
    font-size: 16px;
    padding: 0;
}

    /* Header & Hero */
    header {
      background: linear-gradient(180deg, #151821 0%, var(--bg-dark) 100%);
      border-bottom: 1px solid var(--border);
      padding: 60px 20px 40px;
      text-align: center;
      position: relative;
    }

    .badge-loop {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--accent-glow);
      color: var(--accent);
      border: 1px solid var(--accent);
      padding: 6px 14px;
      border-radius: 20px;
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 16px;
    }

    .badge-loop svg {
      width: 16px;
      height: 16px;
      fill: currentColor;
    }

    h1 {
      font-size: 2.5rem;
      font-weight: 800;
      letter-spacing: -0.5px;
      margin-bottom: 12px;
    }

    .subtitle {
      max-width: 680px;
      margin: 0 auto;
      color: var(--text-muted);
      font-size: 1.1rem;
    }

    /* Contenedor principal */
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* Controles de Filtrado */
    .filter-bar {
      display: flex;
      justify-content: center;
      gap: 10px;
      margin: 30px 0;
      flex-wrap: wrap;
    }

    .filter-btn {
      background: var(--bg-card);
      border: 1px solid var(--border);
      color: var(--text-muted);
      padding: 10px 20px;
      border-radius: 8px;
      cursor: pointer;
      font-weight: 600;
      transition: all 0.2s ease;
    }

    .filter-btn:hover, .filter-btn.active {
      background: var(--text-main);
      color: var(--bg-dark);
      border-color: var(--text-main);
    }

    /* Grid de Semanas */
    .grid-weeks {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
      gap: 20px;
    }

    .card {
      background: var(--bg-card);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: transform 0.2s ease, border-color 0.2s ease;
    }

    .card:hover {
      transform: translateY(-4px);
      border-color: #3b4254;
      background: var(--bg-card-hover);
    }

    .card-img {
      width: 100%;
      height: 160px;
      object-fit: cover;
      background-color: #111318;
      border-bottom: 1px solid var(--border);
    }

    .card-body {
      padding: 20px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .card-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 10px;
    }

    .week-num {
      font-size: 0.8rem;
      font-weight: 800;
      color: var(--accent);
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    .tag {
      font-size: 0.75rem;
      padding: 3px 8px;
      border-radius: 4px;
      background: #232834;
      color: var(--text-muted);
      font-weight: 600;
    }

    .card-title {
      font-size: 1.3rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .card-desc {
      color: var(--text-muted);
      font-size: 0.95rem;
      flex-grow: 1;
    }

    .sim-details {
      margin-top: 15px;
      padding-top: 15px;
      border-top: 1px dashed var(--border);
      font-size: 0.88rem;
    }

    .sim-tag {
      display: inline-block;
      font-weight: 700;
      color: var(--accent-blue);
      margin-right: 5px;
    }

    /* Call to Action */
    .cta-box {
      margin-top: 50px;
      background: linear-gradient(135deg, #1d222e 0%, #151821 100%);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 35px 20px;
      text-align: center;
    }

    .cta-box h2 {
      font-size: 1.8rem;
      margin-bottom: 10px;
    }

    .cta-box p {
      color: var(--text-muted);
      margin-bottom: 20px;
    }

    .btn-primary {
      display: inline-block;
      background: var(--accent);
      color: #fff;
      padding: 12px 28px;
      border-radius: 8px;
      text-decoration: none;
      font-weight: 700;
      transition: background 0.2s ease;
    }

    .btn-primary:hover {
      background: #e03126;
    }