/* =====================
   Variables globales
====================== */
:root {
  --bg-gradient: radial-gradient(circle at top left, #0f172a, #020617 60%);
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5f5;
  --card-bg: rgba(15, 23, 42, 0.8);
  --card-border: rgba(148, 163, 184, 0.2);
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.45);
  --transition-base: 280ms ease;
  --max-width: 1120px;
}

/* =====================
   Estilos base y layout
====================== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family:
    "Manrope",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  background: var(--bg-gradient);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

main {
  width: min(calc(100% - 3rem), var(--max-width));
  margin: 0 auto;
  padding-top: 8rem;
}

section {
  padding: 6rem 0;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

p {
  color: var(--text-secondary);
  margin: 0;
}

.section-title {
  font-size: clamp(2.2rem, 5vw, 3rem);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1rem;
  max-width: 640px;
}

/* =====================
   Header fijo con navegación
====================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  backdrop-filter: blur(16px);
  background: rgba(2, 6, 23, 0.68);
  border-bottom: 1px solid var(--card-border);
  z-index: 1000;
}

.site-header__inner {
  width: min(calc(100% - 3rem), var(--max-width));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 0;
}

.brand {
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

nav a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-secondary);
  position: relative;
  transition: color var(--transition-base);
}

nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition-base);
}

nav a:hover,
nav a:focus {
  color: var(--text-primary);
}

nav a:hover::after,
nav a:focus::after,
nav a[aria-current="page"]::after {
  width: 100%;
}

/* =====================
   Hero Section
====================== */
.hero {
  position: relative;
  display: grid;
  gap: 3rem;
  align-items: center;
  padding-top: 4rem;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -10rem 40% auto -30%;
  background: radial-gradient(
    circle at center,
    rgba(56, 189, 248, 0.3),
    transparent 60%
  );
  filter: blur(80px);
  transform: translate3d(0, 0, 0);
  z-index: -2;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -25% -12rem 55%;
  background: radial-gradient(
    circle at center,
    rgba(14, 165, 233, 0.25),
    transparent 70%
  );
  filter: blur(100px);
  z-index: -2;
}

.hero__content {
  max-width: 640px;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.hero__title {
  margin-top: 1.25rem;
  font-size: clamp(2.8rem, 6vw, 4.2rem);
  line-height: 1.1;
}

.hero__description {
  margin-top: 1.5rem;
  font-size: 1.1rem;
}

.hero__cta {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.75rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid transparent;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    background var(--transition-base),
    border var(--transition-base);
  cursor: pointer;
}

.button--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #020617;
  box-shadow: 0 15px 40px rgba(56, 189, 248, 0.35);
}

.button--primary:hover,
.button--primary:focus {
  transform: translateY(-3px) scale(1.01);
  box-shadow: 0 22px 50px rgba(56, 189, 248, 0.45);
}

.button--ghost {
  border: 1px solid rgba(148, 163, 184, 0.45);
  color: var(--text-primary);
  backdrop-filter: blur(4px);
}

.button--ghost:hover,
.button--ghost:focus {
  transform: translateY(-3px);
  border-color: var(--accent);
  color: var(--accent);
}

.hero__visual {
  position: relative;
  justify-self: end;
  width: min(420px, 90vw);
  aspect-ratio: 1 / 1;
  border-radius: 36px;
  padding: 2rem;
  overflow: hidden;
  background: linear-gradient(
    145deg,
    rgba(15, 23, 42, 0.85),
    rgba(14, 165, 233, 0.25)
  );
  box-shadow: var(--shadow-soft);
}

.hero__visual::before {
  content: "";
  position: absolute;
  inset: 12% 16%;
  border-radius: 30px;
  border: 1px solid rgba(148, 163, 184, 0.25);
  background: linear-gradient(
    135deg,
    rgba(56, 189, 248, 0.15),
    rgba(15, 23, 42, 0.65)
  );
  filter: blur(0);
  animation: pulse 6s ease-in-out infinite;
}

.hero__visual svg {
  position: relative;
  width: 100%;
  height: 100%;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.85;
  }
  50% {
    transform: scale(1.03);
    opacity: 1;
  }
}

.floating-badge {
  position: absolute;
  bottom: 8%;
  left: 12%;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(148, 163, 184, 0.35);
  padding: 1rem 1.25rem;
  border-radius: 20px;
  display: inline-flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.9rem;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.45);
  animation: float 8s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-12px);
  }
}

/* =====================
   Sección Sobre mí
====================== */
.about {
  display: grid;
  gap: 2.5rem;
  align-items: center;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.about__text {
  display: grid;
  gap: 1.25rem;
}

.about__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.chip {
  padding: 0.45rem 1rem;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.35);
  font-size: 0.85rem;
  color: var(--text-primary);
}

.about__illustration {
  position: relative;
  border-radius: 30px;
  overflow: hidden;
  background: linear-gradient(
    160deg,
    rgba(14, 165, 233, 0.25),
    rgba(15, 23, 42, 0.9)
  );
  padding: 3px;
}

.about__illustration img {
  border-radius: 27px;
  height: 100%;
  width: 100%;
  object-fit: cover;
}

.about__illustration::after {
  position: absolute;
  bottom: 1.5rem;
  right: 1.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(148, 163, 184, 0.35);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
}

/* =====================
   Sección Proyectos
====================== */
.projects-grid {
  margin-top: 3rem;
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.project-card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 2rem;
  display: grid;
  gap: 1.5rem;
  box-shadow: 0 18px 38px rgba(15, 23, 42, 0.35);
  transition:
    transform var(--transition-base),
    border var(--transition-base),
    box-shadow var(--transition-base);
  overflow: hidden;
}

.project-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(56, 189, 248, 0.18),
    transparent 60%
  );
  opacity: 0;
  transition: opacity var(--transition-base);
}

.project-card:hover,
.project-card:focus-within {
  transform: translateY(-10px);
  border-color: rgba(56, 189, 248, 0.45);
  box-shadow: 0 26px 50px rgba(15, 23, 42, 0.4);
}

.project-card:hover::before,
.project-card:focus-within::before {
  opacity: 1;
}

.project-card figure {
  margin: 0;
  border-radius: 18px;
  overflow: hidden;
}

.project-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.project-card:hover img,
.project-card:focus-within img {
  transform: scale(1.05);
}

.project-card__title {
  text-align: center;
  font-size: 1.4rem;
}

.project-card__description {
  font-size: 0.98rem;
}

.project-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.project-card__actions a {
  font-size: 0.95rem;
  padding: 0.65rem 1.4rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  color: var(--text-primary);
  transition:
    background var(--transition-base),
    color var(--transition-base),
    transform var(--transition-base);
}

.project-card__actions a:hover,
.project-card__actions a:focus {
  background: rgba(56, 189, 248, 0.18);
  color: var(--accent);
  transform: translateY(-3px);
}

/* =====================
   Sección Contacto
====================== */
.contact {
  text-align: center;
}

.contact__links {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
}

.contact__links a {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.35);
  color: var(--text-primary);
  transition:
    border var(--transition-base),
    transform var(--transition-base),
    color var(--transition-base);
}

.contact__links a:hover,
.contact__links a:focus {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-4px);
}

.contact__links svg {
  width: 20px;
  height: 20px;
}

/* =====================
   Footer
====================== */
footer {
  padding: 2.5rem 1.5rem 3rem;
  text-align: center;
  color: rgba(203, 213, 225, 0.75);
  border-top: 1px solid rgba(148, 163, 184, 0.1);
  margin-top: 4rem;
}

/* =====================
   Animaciones de entrada y scroll
====================== */
[data-animate] {
  opacity: 0;
  transform: translateY(35px);
  transition:
    opacity 600ms ease,
    transform 600ms ease;
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* =====================
   Ajustes responsivos
====================== */
@media (max-width: 960px) {
  nav ul {
    gap: 1rem;
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .hero__visual {
    justify-self: center;
  }
}

@media (max-width: 680px) {
  .site-header__inner {
    flex-direction: column;
    gap: 0.75rem;
  }

  .hero__title {
    font-size: clamp(2.4rem, 9vw, 3.5rem);
  }

  section {
    padding: 5rem 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}