:root {
  --bg-principal: #0f0e0c;
  --bg-card: #181614;
  --bg-input: #100f0d;
  --color-texto: #e8e2d5;
  --color-secundario: #9e9589;
  --color-acento: #c4923a;
  --color-acento-hover: #db9c35;
  --color-borde: #2c2722;
  --color-exito: #4e8752;
  --fuente-editorial: "Georgia", serif;
  --fuente-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { background-color: var(--bg-principal); color: var(--color-texto); font-family: var(--fuente-ui); min-height: 100vh; }

.creditos-header {
  border-bottom: 1px solid var(--color-borde);
  background: var(--bg-card);
  padding: 16px 24px;
  position: sticky; top: 0; z-index: 10;
}

.header-container {
  max-width: 1100px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
}

.btn-volver { color: var(--color-secundario); text-decoration: none; font-size: 0.9rem; font-weight: 500; }
.btn-volver:hover { color: var(--color-acento); }

.usuario-badge {
  background: var(--bg-input); border: 1px solid var(--color-borde);
  padding: 6px 16px; border-radius: 20px; display: flex; align-items: center; gap: 8px;
}
.label-saldo { font-size: 0.85rem; color: var(--color-secundario); }
.monto-saldo { color: var(--color-acento); font-size: 1.1rem; }
.unidad-saldo { font-size: 0.85rem; color: var(--color-secundario); }

.creditos-main { max-width: 1100px; margin: 40px auto 80px auto; padding: 0 20px; display: flex; flex-direction: column; gap: 48px; }

.seccion-cabecera { margin-bottom: 24px; }
.tag-seccion { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-acento); font-weight: 700; }
.seccion-cabecera h2 { font-family: var(--fuente-editorial); font-size: 1.8rem; margin: 6px 0; }
.seccion-cabecera p { color: var(--color-secundario); font-size: 0.95rem; }

/* Grilla Packs */
.grilla-packs { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; }
.tarjeta-pack {
  background: var(--bg-card); border: 1px solid var(--color-borde);
  border-radius: 8px; padding: 32px 24px; position: relative;
  display: flex; flex-direction: column; justify-content: space-between;
}
.tarjeta-pack.destacada { border-color: var(--color-acento); box-shadow: 0 8px 24px rgba(196,146,58,0.1); }

.pack-popular-badge {
  position: absolute; top: 16px; right: 16px; font-size: 0.75rem;
  background: var(--bg-input); border: 1px solid var(--color-borde);
  padding: 2px 8px; border-radius: 10px; color: var(--color-secundario); font-weight: 600;
}
.pack-popular-badge.destacada { background: var(--color-acento); color: #000; border: none; }

.tarjeta-pack h3 { font-size: 1.3rem; margin-bottom: 8px; font-family: var(--fuente-editorial); }
.pack-descripcion { color: var(--color-secundario); font-size: 0.9rem; line-height: 1.5; min-height: 40px; margin-bottom: 20px; }
.pack-precio { font-size: 2rem; font-weight: 700; color: var(--color-texto); margin-bottom: 24px; }
.pack-precio small { font-size: 0.9rem; color: var(--color-secundario); font-weight: 400; }

.btn-comprar-pack {
  width: 100%; padding: 12px; border-radius: 6px; font-weight: 700;
  font-size: 0.95rem; cursor: pointer; border: 1px solid var(--color-borde);
  background: var(--bg-input); color: var(--color-texto); transition: all 0.2s;
}
.btn-comprar-pack:hover { border-color: var(--color-acento); }
.btn-comprar-pack.destacado { background: var(--color-acento); color: #000; border-color: var(--color-acento); }
.btn-comprar-pack.destacado:hover { background: var(--color-acento-hover); }

/* Misiones */
.lista-misiones { display: flex; flex-direction: column; gap: 16px; }
.tarjeta-mision {
  background: var(--bg-card); border: 1px solid var(--color-borde);
  border-radius: 8px; padding: 24px; display: flex; flex-wrap: wrap;
  align-items: center; justify-content: space-between; gap: 20px;
}
.mision-info { flex: 1 1 450px; }
.recompensa-tag {
  background: rgba(78, 135, 82, 0.15); color: var(--color-exito);
  font-size: 0.75rem; font-weight: 700; padding: 3px 8px; border-radius: 4px;
}
.mision-info h4 { font-size: 1.1rem; margin: 8px 0 4px 0; font-family: var(--fuente-editorial); }
.mision-info p { font-size: 0.85rem; color: var(--color-secundario); line-height: 1.4; }

.mision-accion { flex: 1 1 350px; display: flex; gap: 10px; }
.input-evidencia {
  flex: 1; background: var(--bg-input); border: 1px solid var(--color-borde);
  padding: 10px 14px; border-radius: 6px; color: var(--color-texto);
  font-size: 0.9rem; outline: none;
}
.input-evidencia:focus { border-color: var(--color-acento); }

.btn-enviar-evidencia, .btn-copiar-enlace {
  padding: 10px 18px; border-radius: 6px; font-weight: 700; font-size: 0.85rem;
  cursor: pointer; border: none; background: var(--color-acento); color: #000;
  white-space: nowrap; transition: background 0.2s;
}
.btn-enviar-evidencia:hover, .btn-copiar-enlace:hover { background: var(--color-acento-hover); }