/* Estilos propios de cada sección de la página, en el orden en que aparecen. */

/* Cabecera */
header { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 900; font-size: 20px; color: var(--text); text-decoration: none; }
.brand img { width: 34px; height: 34px; }
.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a { color: var(--muted); text-decoration: none; font-weight: 700; font-size: 16px; }
.nav-links a:hover { color: var(--text); }
.nav-links a.gh { display: inline-flex; align-items: center; gap: 6px; }
.nav-links .btn { color: var(--on-accent); padding: 9px 18px; font-size: 15px; }
@media (max-width: 760px) { .nav-links a:not(.btn) { display: none; } }

/* Portada */
.hero { padding: 72px 0 88px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.hero h1 span { color: var(--accent); }
.hero .actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 32px 0 20px; }
.hero .note { font-size: 15px; color: var(--muted); }
.hero-phone { justify-self: center; width: min(330px, 80vw); padding: 10px; filter: drop-shadow(0 30px 40px rgba(0, 0, 0, .25)); transform: rotate(3deg); }
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero .lead { margin: 0 auto; }
  .hero .actions { justify-content: center; }
  .hero-phone { transform: none; }
}

/* Funciones y documentación */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 48px; }
@media (max-width: 900px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 580px) { .grid { grid-template-columns: 1fr; } }

/* Demostración */
.demo { display: grid; grid-template-columns: 1fr auto; gap: 56px; align-items: center; margin-top: 40px; }
.tabs { display: flex; flex-direction: column; gap: 10px; }
.tab { text-align: left; background: var(--card); border: 2px solid var(--line); border-radius: 18px; padding: 16px 20px; cursor: pointer; font-family: inherit; color: var(--text); transition: border-color .15s, background .15s; }
.tab strong { display: block; font-size: 18px; font-weight: 800; }
.tab span { color: var(--muted); font-size: 16px; }
.tab[aria-selected="true"] { border-color: var(--accent); background: var(--accent-soft); }
@media (max-width: 860px) {
  .demo { grid-template-columns: 1fr; }
  .tabs { flex-direction: row; overflow-x: auto; padding-bottom: 6px; order: 2; }
  .tab { flex: 0 0 auto; }
  .tab span { display: none; }
}

.phone { width: 320px; height: 656px; background: var(--phone); border-radius: 46px; padding: 12px; box-shadow: var(--shadow); justify-self: center; position: relative; }
.screen { width: 100%; height: 100%; background: var(--screen); border-radius: 36px; overflow: hidden; position: relative; }
.screen .view { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: top; display: none; animation: fade .3s ease; }
.screen .view.active { display: block; }
@keyframes fade { from { opacity: 0; transform: scale(.98); } to { opacity: 1; transform: none; } }
.demo-caption { text-align: center; color: var(--muted); font-size: 15px; margin-top: 14px; }

/* Galería */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px 28px; margin-top: 48px; }
@media (max-width: 860px) { .gallery { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .gallery { grid-template-columns: 1fr; max-width: 280px; margin-left: auto; margin-right: auto; } }

/* Cuidador y licencia: texto + captura */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.panel-shot { max-width: 300px; justify-self: center; }
#licencia .shot .frame { max-width: 280px; }
#licencia .btn-row { margin-top: 24px; }
.license-note { margin-top: 20px; font-size: 15px; color: var(--muted); }

/* Instalación */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 48px; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 580px) { .steps { grid-template-columns: 1fr; } }
.step { counter-increment: step; }
.step::before { content: counter(step); display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: var(--accent); color: var(--on-accent); font-weight: 900; font-size: 20px; margin-bottom: 16px; }

/* Descarga */
.download { background: var(--card); border: 1px solid var(--line); border-radius: 32px; padding: 48px; display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center; box-shadow: var(--shadow); }
.download .lead { margin: 0; }
.reqs { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
@media (max-width: 760px) {
  .download { grid-template-columns: 1fr; padding: 32px 24px; text-align: center; }
  .download .btn-row, .reqs { justify-content: center; }
}

/* Preguntas */
.faq { max-width: 780px; margin: 40px auto 0; display: grid; gap: 12px; }

/* Pie */
footer { border-top: 1px solid var(--line); padding: 32px 0; color: var(--muted); font-size: 15px; }
footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
footer a { color: var(--muted); }
footer .credits { flex-basis: 100%; font-size: 13px; }
.theme-toggle { background: none; border: 1px solid var(--line); color: var(--muted); border-radius: 999px; padding: 6px 14px; cursor: pointer; font-family: inherit; font-size: 14px; }