/* 1. Variables globales */
:root {
  --bg: #0a1226;
  --surface: #101c38;
  --surface-soft: #16223f;
  --border: rgba(255, 255, 255, 0.14);

  --text: #f5f7fb;
  --text-muted: #aab3c9;

  --accent-green: #22c55e;
  --accent-green-hover: #1ba851;

  --placeholder-bg: #0e0e10;
  --placeholder-border: rgba(255, 255, 255, 0.25);

  --font-heading: "Space Grotesk", sans-serif;
  --font-body: "Inter", sans-serif;

  --radius-lg: 28px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --section-padding: 5rem 1.5rem;
  --max-width: 1100px;
  --max-width-wide: 1400px;
}

/* 2. Reset básico */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

/* Canvas: fondo estrellado dinámico */
#starsCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 600;
}

/* Oculta visualmente pero deja accesible a lectores de pantalla */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* 3. Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 18, 38, 0.9);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.navbar__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
}

.navbar__logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
}
.navbar__logo .dot {
  color: var(--accent-green);
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
}
.nav-link:hover {
  color: var(--text);
}
.nav-link--cta {
  background: var(--accent-green);
  color: #08170f;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}
.nav-link--cta:hover {
  background: var(--accent-green-hover);
  color: #08170f;
}

/* Hamburguesa: solo mobile */
.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.navbar__toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
/* is-open (JS) -> forma de X */
.navbar__toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__toggle.is-open span:nth-child(2) { opacity: 0; }
.navbar__toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 4. Layout general de sección */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--section-padding);
}

.section__title {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  text-align: center;
}
.section__title--left {
  text-align: left;
}

/* Variante ancha (usada en Proyectos) */
.section--wide {
  max-width: var(--max-width-wide);
  padding-top: 6rem;
  padding-bottom: 6rem;
}

/* Tarjeta base reutilizable */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 3.5rem;
}
.card--wide {
  width: 100%;
}
/* Variante con degradado (Estudios, Stack) */
.card--gradient {
  background: linear-gradient(160deg, var(--surface) 0%, #3a4568 55%, #e7e9f0 100%);
}
.card--gradient .section__title,
.card--gradient p,
.card--gradient h3 {
  color: var(--text);
}

/* 5. Placeholders de imagen */
.placeholder {
  background: var(--placeholder-bg);
  border: 1px solid var(--placeholder-border);
  border-radius: var(--radius-sm);
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-align: center;
}
.placeholder::before {
  content: attr(data-label);
}
.placeholder--square {
  width: 96px;
  height: 96px;
  min-height: 0;
  flex-shrink: 0;
}
.placeholder--square-lg {
  width: 220px;
  height: 220px;
  min-height: 0;
  flex-shrink: 0;
}
.placeholder--tall {
  min-height: 320px;
}

/* 6. Hero (Inicio) */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  padding-top: 3rem;
  min-height: calc(100vh - 65px);
  max-width: 1900px;
}
.hero__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 5rem 3.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 2rem;
  min-height: 640px;
}
.hero__title {
  font-size: 5.5rem;
}
.hero__text {
  color: var(--text-muted);
  max-width: 34ch;
  font-size: 1.35rem;
}
.hero__media {
  display: flex;
}
.hero__media .placeholder {
  width: 100%;
}
.hero__cta {
  padding: 1.3rem 3.25rem;
  font-size: 1.35rem;
}

/* Collage: imágenes superpuestas (relative + absolute) */
.hero__stack {
  position: relative;
  width: 100%;
  min-height: 640px;
}
.hero__stack-img {
  position: absolute;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--placeholder-border);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
  transition: transform 0.25s ease;
}
/* Imagen de atrás */
.hero__stack-img--back {
  top: 0;
  left: 0;
  transform: rotate(-4deg);
  z-index: 1;
}
/* Imagen de adelante */
.hero__stack-img--front {
  bottom: 0;
  right: 0;
  z-index: 2;
}
.hero__stack:hover .hero__stack-img--back {
  transform: rotate(-7deg) translate(-6px, -6px);
}
.hero__stack:hover .hero__stack-img--front {
  transform: translate(6px, 6px);
}

/* Botones reutilizables */
.btn {
  display: inline-block;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.85rem 2rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
}
.btn:hover {
  transform: translateY(-1px);
}
.btn--primary {
  background: var(--accent-green);
  color: #08170f;
}
.btn--primary:hover {
  background: var(--accent-green-hover);
}

/* 7. Acerca de mí */
.about__text {
  color: var(--text-muted);
  margin-bottom: 1rem;
  text-align: center;
}
.about__text:last-child {
  margin-bottom: 0;
}

/* 8. Carruseles (Páginas Web / Aplicaciones) */
.carousel {
  overflow: hidden;
}
.carousel__track {
  display: flex;
  /* debe coincidir con SLIDE_GAP_PX en script.js */
  gap: 100px;
  transition: transform 0.4s ease;
}
.carousel__slide {
  flex: 0 0 100%;
  min-width: 100%;
  opacity: 0.25;
  transition: opacity 0.4s ease;
}
/* agregada por JS en goToSlide() */
.carousel__slide.is-active {
  opacity: 1;
}

/* Variante con flechas laterales */
.carousel--main {
  position: relative;
}

/* Ventana que recorta y difumina los slides (bordes con gradiente) */
.carousel__viewport {
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0,
    black 48px,
    black calc(100% - 48px),
    transparent 100%
  );
  mask-image: linear-gradient(
    to right,
    transparent 0,
    black 48px,
    black calc(100% - 48px),
    transparent 100%
  );
}

/* Flechas prev/next */
.carousel__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(16, 28, 56, 0.4);
  color: var(--text);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.carousel__arrow:hover {
  background: rgba(16, 28, 56, 0.8);
  border-color: var(--accent-green);
}
.carousel__arrow--prev {
  left: -4px;
}
.carousel__arrow--next {
  right: -4px;
}
/* Mobile: flechas más adentro */
@media (max-width: 600px) {
  .carousel__arrow {
    width: 36px;
    height: 36px;
    font-size: 0.95rem;
  }
  .carousel__arrow--prev { left: 0.25rem; }
  .carousel__arrow--next { right: 0.25rem; }
}

.carousel__dots {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 1.5rem;
}
/* .is-active la agrega/quita script.js */
.carousel__dots button {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--text-muted);
  background: transparent;
  cursor: pointer;
  padding: 0;
}
.carousel__dots button.is-active {
  background: var(--text);
  border-color: var(--text);
}

.project-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-top: 1rem;
}
.project-card {
  text-align: center;
}
.project-card__name {
  margin-bottom: 1rem;
  font-size: 1.1rem;
}
/* Link que envuelve la captura del sitio */
.project-card__image {
  display: block;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--placeholder-border);
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.project-card__image:hover {
  transform: translateY(-3px);
  border-color: var(--accent-green);
}
.project-card__image img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  object-position: top;
}
.project-card__details {
  margin-top: 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3.5rem;
  margin-top: 1rem;
}
.app-card {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  min-height: 100%;
}
.app-card .placeholder--square {
  width: 100%;
  aspect-ratio: 1 / 1;
  height: auto;
}
/* Íconos reales de Aplicaciones (Galería, BlocNote, Patra) - 1.25x más pequeños */
.app-card__icon {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--placeholder-border);
  flex-shrink: 0;
}
.app-card__name {
  font-size: 1.1rem;
  min-height: 1.5em;
  display: flex;
  align-items: center;
}
.app-card__details {
  color: var(--text-muted);
  font-size: 0.9rem;
  flex-grow: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 2.7em;
}
/* Botón de descarga - invisible por defecto */
.app-card__download {
  display: none;
  padding: 0.6rem 1.2rem;
  background: var(--accent-green);
  color: #08170f;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: background 0.2s ease, transform 0.15s ease;
  cursor: pointer;
}
/* Visible solo si tiene data-download */
.app-card__download[data-download] {
  display: inline-block;
}
.app-card__download:hover {
  background: var(--accent-green-hover);
  transform: translateY(-1px);
}

/* 9. Stack informático — marquee de íconos (loop infinito) */
.stack-marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0,
    black 64px,
    black calc(100% - 64px),
    transparent 100%
  );
  mask-image: linear-gradient(
    to right,
    transparent 0,
    black 64px,
    black calc(100% - 64px),
    transparent 100%
  );
}

.stack-marquee__track {
  display: flex;
  width: max-content;
  animation: stack-marquee 28s linear infinite;
}

/* Hover: pausa el loop */
.stack-marquee:hover .stack-marquee__track {
  animation-play-state: paused;
}

.stack-marquee__group {
  display: flex;
  gap: 1.25rem;
  padding-right: 1.25rem;
  flex-shrink: 0;
}

/* Loop: grupo B = copia del A, track mide el doble -> -50% */
@keyframes stack-marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Respeta prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .stack-marquee__track {
    animation: none;
  }
}

/* Tamaño: 90px = 72px original × 1.25 */
.stack-icon {
  position: relative;
  width: 99px;
  height: 99px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18.7px;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}
.stack-icon:hover {
  transform: translateY(-3px);
}
.stack-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
/* Tooltip: aparece al hacer hover */
.stack-icon__label {
  position: absolute;
  bottom: -1.8rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}
.stack-icon:hover .stack-icon__label {
  opacity: 1;
}

/* 10. Estudios */
.study {
  display: flex;
  gap: 2rem;
  align-items: center;
  flex-wrap: wrap;
}
.study__text h3 {
  font-size: 1.6rem;
  margin-bottom: 0.75rem;
}
/* Ancho fijo, recorta la foto (4:3) */
.study__image {
  width: 320px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1px solid var(--placeholder-border);
  flex-shrink: 0;
}
.study__text p {
  color: rgba(245, 247, 251, 0.85);
  max-width: 45ch;
}

/* 11. Contacto */
.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
.contact__social {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}
.contact__hint {
  background: var(--placeholder-bg);
  border-radius: var(--radius-sm);
  padding: 1rem;
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--text-muted);
}
.contact__icons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  max-width: 200px;
  margin: 0 auto;
}
.social-icon {
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  border: 1px solid var(--placeholder-border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.825rem;
  width: 77px;
  height: 77px;
  transition: transform 0.2s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.social-icon:hover {
  transform: translateY(-3px);
}

/* WhatsApp: brillo verde */
.social-icon--whatsapp:hover {
  border-color: #25d366;
  box-shadow: 0 0 14px rgba(37, 211, 102, 0.55);
}

/* Gmail: brillo multicolor dinámico (rojo, amarillo, azul, verde) */
.social-icon--gmail:hover {
  animation: gmail-glow 2.4s linear infinite;
}

/* linkedin: brillo azul */
.social-icon--linkedin:hover {
  border-color: #0A66C2;
  box-shadow: 0 0 14px rgba(10, 102, 194, 1);
}

/* Instagram: brillo multicolor dinámico (rojo, amarillo, azul, verde) */
.social-icon--instagram:hover {
  animation: instagram-glow 2.4s linear infinite;
}

@keyframes gmail-glow {
  0%   { border-color: #ea4335; box-shadow: 0 0 14px rgba(234, 67, 53, 0.55); }
  25%  { border-color: #fbbc05; box-shadow: 0 0 14px rgba(251, 188, 5, 0.55); }
  50%  { border-color: #4285f4; box-shadow: 0 0 14px rgba(66, 133, 244, 0.55); }
  75%  { border-color: #7ba586; box-shadow: 0 0 14px rgba(52, 168, 83, 0.55); }
  100% { border-color: #ea4335; box-shadow: 0 0 14px rgba(234, 67, 53, 0.55); }
}
@media (prefers-reduced-motion: reduce) {
  .social-icon--gmail:hover {
    animation: none;
    border-color: #4285f4;
    box-shadow: 0 0 14px rgba(66, 133, 244, 0.55);
  }
}

@keyframes instagram-glow {
  0%   { border-color: #f09433; box-shadow: 0 0 14px rgba(240, 148, 51, 0.55); }
  25%  { border-color: #e6683c; box-shadow: 0 0 14px rgba(230, 104, 60, 0.55); }
  50%  { border-color: #dc2743; box-shadow: 0 0 14px rgba(220, 39, 67, 0.55); }
  75%  { border-color: #cc2366; box-shadow: 0 0 14px rgba(204, 35, 102, 0.55); }
  100% { border-color: #bc1888; box-shadow: 0 0 14px rgba(188, 24, 136, 0.55); }
}
@media (prefers-reduced-motion: reduce) {
  .social-icon--instagram:hover {
    animation: none;
    border-color: #e1306c;
    box-shadow: 0 0 14px rgba(225, 48, 108, 0.55);
  }
}
.social-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.contact__form-wrapper {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  color: var(--text);
  font-family: var(--font-body);
  resize: vertical;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid var(--accent-green);
  outline-offset: 2px;
}
.contact-form__status {
  min-height: 1.2em;
  font-size: 0.9rem;
}
.contact-form__status.is-success { color: var(--accent-green); }
.contact-form__status.is-error { color: #f87171; }

/* 12. Footer */
.footer {
  text-align: center;
  padding: 2rem 1.5rem;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

/* 13. Responsive */
@media (max-width: 900px) {
  .hero,
  .contact {
    grid-template-columns: 1fr;
  }
  .project-grid {
    grid-template-columns: 1fr;
  }
  .app-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .navbar__toggle {
    display: flex;
  }
  .navbar__menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
    gap: 1rem;
    /* is-open (JS) lo muestra */
    display: none;
  }
  .navbar__menu.is-open {
    display: flex;
  }
  .app-grid {
    grid-template-columns: 1fr;
  }
}