/* LAPTOP  (≤ 1440px) */

@media (max-width: 1440px) {
  .columna-izquierda {
    width: 50%;
    padding-top: 6rem;
  }

  .columna-derecha {
    width: 50%;
    right: 0 !important;
  }

  .slogan-vidrio {
    width: 100%;
    max-width: 920px;
    margin-top: 80px;
    font-size: 1.2rem;
  }

  .pc3d {
    right: 20px;
  }

  #modelo-3d {
    width: 800px;
  }

  #anim-ui-ux {
    width: 380px;
  }
}

/* LAPTOP  (≤ 1024px) */

@media (max-width: 1024px) {
  .inicio {
    padding: 0 0 0 40px;
  }

  .columna-izquierda {
    width: 55%;
    padding-top: 6rem;
  }

  .columna-derecha {
    width: 45%;
  }

  .slogan-vidrio {
    width: 100%;
    max-width: 560px;
    margin-top: 80px;
    font-size: 1.2rem;
  }
  .pc3d {
    width: 400px !important;
    right: 20px;
  }

  #modelo-3d {
    width: 650px;
    height: 500px;
  }

  #anim-ui-ux {
    right: 60px;
    width: 380px;
  }
}

/* TABLET (≤ 768px) */

@media (max-width: 768px) {
  /* SIDEBAR → barra inferior */
  .sidebar {
    position: fixed;
    left: 0;
    bottom: 0;
    top: auto;
    width: 100%;
    height: 64px;
    flex-direction: row;
    justify-content: space-around;
    align-items: center;
    padding: 0 16px;
    background: rgba(240, 238, 233, 0.92);
    backdrop-filter: blur(16px);
    border-top: 1px solid rgba(48, 49, 59, 0.12);
    z-index: 9999;
  }

  .footer-header {
    display: none;
  }

  .menu {
    flex-direction: row;
    gap: 0;
    width: 100%;
    justify-content: space-around;
    margin: 0;
  }

  .icono {
    width: 44px;
    height: 44px;
    border-radius: 12px;
  }

  /* Tooltip → encima del icono */
  .icono .tooltip-sb {
    top: auto;
    bottom: 52px;
    left: 50%;
    transform: translateX(-50%);
    width: max-content;
    max-width: 110px;
  }

  .icono:hover .tooltip-sb {
    top: auto;
    bottom: 52px;
  }

  /* Indicador vertical → oculto en tablet/móvil */
  .indicador-parallax {
    display: none;
  }

  /* Botón idioma */
  .btn-idioma {
    top: 16px !important;
    right: 16px !important;
    padding: 8px 12px;
    font-size: 0.85rem;
  }

  /* Contenido principal */
  .contenido {
    margin-left: 0;
    margin-bottom: 64px; /* espacio para barra inferior */
  }

  /* ── INICIO: layout tablet ── */
  .inicio {
    flex-direction: column;
    padding: 0;
    min-height: 100vh;
    position: relative;
    overflow: hidden;
  }

  .columna-izquierda {
    width: 100%;
    padding: 6rem 28px 0 28px;
    position: relative;
    z-index: 2;
  }

  .titulo-principal {
    font-size: 2.2rem;
  }

  .subtitulo-estu {
    font-size: 1.2rem;
  }

  /* Columna derecha: fondo decorativo */
  .columna-derecha {
    position: absolute;
    top: 0;
    right: 0;
    width: 55%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
  }

  .pc3d {
    position: absolute;
    top: 170px !important;
    right: 10px;
    width: 360px !important;
    height: 320px;
  }

  #modelo-3d {
    width: 580px;
    height: 480px;
  }

  #anim-ui-ux {
    top: 200px;
    right: 10px;
    width: 280px;
    height: 80px;
  }

  .slogan-vidrio {
    width: 100%;
    max-width: 100%;
    margin-top: 15rem;
    font-size: 1.1rem;
    padding: 20px 22px;
    border-radius: 20px;
  }

  .contenedor-slogan-scroll {
    display: flex;
    align-items: flex-end;
    gap: 16px;
  }

  .scrolldown {
    margin-top: 0;
    flex-shrink: 0;
  }

  .botones-contacto {
    margin-top: 20px;
    gap: 12px;
  }
}

/* MOVIL (≤ 480px) */

@media (max-width: 480px) {
  /* ── SIDEBAR ── */
  .icono {
    width: 40px;
    height: 40px;
  }

  .inicio {
    flex-direction: column;
    padding: 0;
    min-height: 100vh;
    position: relative;
    overflow: hidden;
  }

  .columna-izquierda {
    padding: 4.5rem 16px 0 16px;
  }

  .titulo-principal {
    font-size: 2rem;
    line-height: 1.15;
  }

  .subtitulo-estu {
    font-size: 1.1rem;
    margin-top: 8px;
    line-height: 1.4;
  }

  .linea-decorativa {
    width: 140px;
    height: 3px;
    margin-top: 14px;
  }

  .botones-contacto {
    margin-top: 20px;
    gap: 12px;
  }

  /* Columna derecha: fondo decorativo semitransparente */
  .columna-derecha {
    position: absolute;
    top: 0;
    right: -20px;
    width: 60%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
  }

  .pc3d {
    position: absolute !important;
    top: 10rem !important;
    right: 20px;
    width: 300px !important;
    height: 280px;
  }

  #modelo-3d {
    width: 480px;
    height: 400px;
  }

  #anim-ui-ux {
    top: 16rem;
    right: 20px;
    width: 220px;
    height: 70px;
  }

  /* Slogan e scroll al fondo de la columna izquierda */
  .contenedor-slogan-scroll {
    display: flex;
    flex-direction: row;
    align-items: flex-end;
    gap: 14px;
    margin-top: 0;
  }

  .slogan-vidrio {
    flex: 1;
    width: auto;
    margin: auto 0;
    top: 10rem !important;
    max-width: 100%;
    margin-top: 40px;
    font-size: 1rem;
    padding: 18px 18px;
    border-radius: 18px;
  }

  .scrolldown {
    margin-top: 40px;
    margin-left: 0;
    flex-shrink: 0;
    align-self: flex-end;
    margin-bottom: 4px;
  }
}

/* MOVIL PEQUEÑO (≤ 360px) */

@media (max-width: 360px) {
  .columna-izquierda {
    padding: 4.5rem 16px 0 16px;
  }

  .titulo-principal {
    font-size: 1.75rem;
  }

  .subtitulo-estu {
    font-size: 1rem;
  }

  .slogan-vidrio {
    font-size: 0.9rem;
    padding: 14px 14px;
    border-radius: 14px;
    top: 12rem !important;
  }

  .contenedor-slogan-scroll {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    top: 20rem !important;
  }

  .pc3d {
    top: 10rem !important;
    right: 20px;
  }
  #modelo-3d {
    width: 480px;
    height: 420px;
  }

  #anim-ui-ux {
    top: 16rem !important;
  }
}