/* ==========================================================================
   Brandon Valenzuela Cubas — Portafolio
   Estructura: tokens y reset | utilidades | navbar | hero | secciones | responsive
   ========================================================================== */

/* ------------------------------- Tokens ---------------------------------- */
:root {
  --color-primary: #003DA5;
  --color-accent: #2563EB;
  --color-accent-hover: #3B82F6;
  --color-accent-text: #7FB0FF;
  --color-background: #0A101E;
  --color-surface: #111A2C;
  --color-surface-2: #17223A;
  --color-border: rgba(148, 170, 205, 0.16);
  --color-text: #EDF1F7;
  --color-muted: #93A1B8;
  --color-success: #3DD68C;
  --color-gold: #F5C242;

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;

  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.25);
  --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.35);

  --transition: 0.25s ease;
}

/* ------------------------------- Reset ----------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

h1, h2, h3, h4 {
  line-height: 1.2;
  font-weight: 700;
}

code {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.9em;
  color: var(--color-accent-text);
  background: rgba(37, 99, 235, 0.12);
  padding: 0.1em 0.4em;
  border-radius: 6px;
}

:focus-visible {
  outline: 2px solid var(--color-accent-text);
  outline-offset: 3px;
}

::selection {
  background: rgba(37, 99, 235, 0.35);
  color: #fff;
}

/* ---------------------------- Utilidades --------------------------------- */
.container {
  width: 100%;
  max-width: 1160px;
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  padding-block: clamp(64px, 9vw, 104px);
}

.section-alt {
  background-color: #0C1424;
  border-block: 1px solid var(--color-border);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: 10px 16px;
  background: var(--color-accent);
  color: #fff;
  border-radius: 0 0 var(--radius-sm) 0;
}

.skip-link:focus {
  left: 0;
  color: #fff;
}

/* ------------------------------- Botones --------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  transition:
    background-color var(--transition),
    border-color var(--transition),
    color var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
}

.btn-icon {
  flex-shrink: 0;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn-outline:hover {
  border-color: var(--color-accent-text);
  color: var(--color-accent-text);
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

/* ------------------------------- Navbar ---------------------------------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(10, 16, 30, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.navbar.scrolled {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 72px;
}

.nav-logo {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.nav-logo span {
  color: var(--color-accent-text);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.35rem;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-muted);
  padding: 0.25rem 0;
  transition: color var(--transition);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--color-text);
}

.nav-link.is-active {
  color: var(--color-accent-text);
}

.nav-cta {
  font-size: 0.9rem;
  padding: 0.6rem 1.1rem;
  white-space: nowrap;
}

.nav-cta-drawer {
  display: none;
}

/* Hamburguesa */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --------------------------------- Hero ---------------------------------- */
.hero {
  position: relative;
  padding-block: clamp(72px, 11vw, 132px) clamp(64px, 9vw, 108px);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(640px 460px at 82% 8%, rgba(37, 99, 235, 0.18), transparent 62%),
    radial-gradient(520px 380px at 8% 92%, rgba(0, 61, 165, 0.14), transparent 60%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 170, 205, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 170, 205, 0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 0%, transparent 75%);
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 0%, transparent 75%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  padding: 0.4rem 0.9rem;
  border: 1px solid rgba(61, 214, 140, 0.35);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-success);
  background: rgba(61, 214, 140, 0.08);
}

.hero-badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(61, 214, 140, 0.5); }
  50% { box-shadow: 0 0 0 6px rgba(61, 214, 140, 0); }
}

.hero-greeting {
  font-size: 1.1rem;
  color: var(--color-muted);
  margin-bottom: 0.5rem;
}

.hero-name {
  font-size: clamp(2.4rem, 5.5vw, 3.75rem);
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.hero-role {
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.35rem;
}

.hero-tags {
  font-size: clamp(0.95rem, 1.8vw, 1.15rem);
  font-weight: 600;
  color: var(--color-accent-text);
  margin-bottom: 1.25rem;
}

.hero-desc {
  max-width: 58ch;
  color: var(--color-muted);
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 2.25rem;
}

.social-links {
  display: flex;
  gap: 0.75rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  background: var(--color-surface);
  transition:
    color var(--transition),
    border-color var(--transition),
    transform var(--transition);
}

.social-link:hover {
  color: var(--color-accent-text);
  border-color: var(--color-accent-text);
  transform: translateY(-2px);
}

/* Tarjeta de resumen del hero */
.hero-card {
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.hero-card-top {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-border);
}

.hero-monogram {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
}

.hero-card-name {
  font-weight: 700;
  font-size: 1rem;
}

.hero-card-tags {
  font-size: 0.82rem;
  color: var(--color-muted);
}

.hero-card-list {
  display: grid;
  gap: 0.85rem;
  margin-top: 1.25rem;
}

.hero-card-list li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

.hero-card-list span {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.hero-card-list strong {
  font-size: 0.9rem;
  font-weight: 600;
  text-align: right;
}

/* --------------------------- Cabeceras de sección ------------------------- */
.section-head {
  max-width: 720px;
  margin-bottom: clamp(36px, 5vw, 56px);
}

.section-label {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-accent-text);
  margin-bottom: 0.6rem;
}

.section-title {
  font-size: clamp(1.7rem, 3.6vw, 2.4rem);
  letter-spacing: -0.02em;
}

.section-desc {
  margin-top: 0.75rem;
  color: var(--color-muted);
}

/* -------------------------------- Sobre mí -------------------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.about-text p {
  color: var(--color-muted);
  font-size: 1.05rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.stat-card {
  padding: 1.5rem 1.4rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  transition:
    border-color var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
}

.stat-card:hover {
  border-color: rgba(127, 176, 255, 0.45);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.stat-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 1.15rem;
  font-weight: 700;
}

.stat-sub {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin-top: 0.2rem;
}

/* Idiomas */
.languages {
  margin-top: clamp(36px, 5vw, 56px);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.languages-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-accent-text);
  margin-bottom: 1rem;
}

.languages-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.language-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-surface-2);
  font-size: 0.9rem;
  font-weight: 600;
}

.language-chip small {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-muted);
}

/* ------------------------------ Experiencia ------------------------------- */
.timeline {
  position: relative;
  max-width: 780px;
  padding-left: 2rem;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 8px;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
}

.timeline-marker {
  position: absolute;
  top: 8px;
  left: -2rem;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 3px solid var(--color-accent);
  background: var(--color-background);
}

.timeline-content {
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  transition:
    border-color var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
}

.timeline-content:hover {
  border-color: rgba(127, 176, 255, 0.45);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.timeline-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.1rem;
}

.job-company {
  font-size: 1.2rem;
  margin-bottom: 0.2rem;
}

.job-role {
  font-size: 0.95rem;
  color: var(--color-accent-text);
  font-weight: 500;
}

.job-year {
  flex-shrink: 0;
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent-text);
  background: rgba(37, 99, 235, 0.14);
  border: 1px solid rgba(37, 99, 235, 0.3);
}

.job-list {
  display: grid;
  gap: 0.6rem;
}

.job-list li {
  position: relative;
  padding-left: 1.25rem;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.job-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  opacity: 0.7;
}

/* ------------------------------- Proyectos -------------------------------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  overflow: hidden;
  transition:
    border-color var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
}

.project-card:hover {
  border-color: rgba(127, 176, 255, 0.45);
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.project-img {
  width: 100%;
  height: 190px;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.project-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 0.9rem;
  padding: 1.5rem;
}

.project-badge {
  align-self: flex-start;
  padding: 0.32rem 0.8rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-gold);
  background: rgba(245, 194, 66, 0.12);
  border: 1px solid rgba(245, 194, 66, 0.35);
}

.project-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

.project-title {
  font-size: 1.15rem;
}

.project-year {
  flex-shrink: 0;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-muted);
}

.project-desc {
  font-size: 0.95rem;
  color: var(--color-muted);
}

.project-logros {
  display: grid;
  gap: 0.45rem;
}

.project-logros li {
  position: relative;
  padding-left: 1.2rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.project-logros li::before {
  content: "✔";
  position: absolute;
  left: 0;
  font-size: 0.8rem;
  color: var(--color-success);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: 0.5rem;
}

.tech-chip-card {
  padding: 0.32rem 0.8rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-accent-text);
  background: rgba(37, 99, 235, 0.12);
  border: 1px solid rgba(37, 99, 235, 0.28);
}

.project-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding-top: 0.4rem;
}

.project-actions .btn {
  padding: 0.55rem 1.1rem;
  font-size: 0.88rem;
}

/* ------------------------------ Tecnologías -------------------------------- */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.tech-cat {
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  transition:
    border-color var(--transition),
    transform var(--transition);
}

.tech-cat:hover {
  border-color: rgba(127, 176, 255, 0.45);
  transform: translateY(-4px);
}

.tech-cat-title {
  font-size: 1rem;
  margin-bottom: 1rem;
  color: var(--color-accent-text);
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.chip {
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  transition:
    border-color var(--transition),
    color var(--transition);
}

.chip:hover {
  border-color: var(--color-accent-text);
  color: var(--color-accent-text);
}

/* -------------------------- Educación y certificados ----------------------- */
.edu-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 1.5rem;
  align-items: stretch;
}

.edu-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(0, 61, 165, 0.22), rgba(10, 16, 30, 0) 55%), var(--color-surface);
  overflow: hidden;
}

.edu-card-body {
  padding: 2rem;
}

.edu-year {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent-text);
  background: rgba(37, 99, 235, 0.14);
  border: 1px solid rgba(37, 99, 235, 0.3);
  margin-bottom: 1.25rem;
}

.edu-institution {
  font-size: 1.45rem;
  margin-bottom: 0.35rem;
}

.edu-degree {
  font-size: 1rem;
  color: var(--color-accent-text);
  font-weight: 500;
  margin-bottom: 1.5rem;
}

.edu-list {
  display: grid;
  gap: 0.6rem;
}

.edu-list li {
  position: relative;
  padding-left: 1.4rem;
  color: var(--color-muted);
  font-size: 0.95rem;
}

.edu-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--color-accent);
}

.cert-card-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  align-content: start;
}

.cert-card {
  display: flex;
  flex-direction: column;
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  gap: 0.4rem;
  transition:
    border-color var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
}

.cert-card:hover {
  border-color: rgba(127, 176, 255, 0.45);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.cert-year {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-accent-text);
}

.cert-title {
  font-size: 1rem;
}

.cert-org {
  font-size: 0.85rem;
  color: var(--color-muted);
}

.link-subtle,
.cert-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent-text);
  transition:
    color var(--transition),
    background-color var(--transition),
    text-decoration-color var(--transition);
}

.cert-link {
  margin-top: auto;
  padding-top: 0.5rem;
}

.link-subtle {
  margin-top: 1.5rem;
}

.project-actions .link-subtle {
  margin-top: 0.15rem;
  align-self: center;
}

.link-arrow {
  display: inline-block;
  transition: transform var(--transition);
}

.link-subtle:hover,
.cert-link:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
  text-decoration-color: rgba(127, 176, 255, 0.55);
  background: rgba(37, 99, 235, 0.08);
}

.link-subtle:hover .link-arrow,
.cert-link:hover .link-arrow {
  transform: translateX(3px);
}

/* ------------------------------ Premios y logros --------------------------- */
.awards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.award-card {
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  transition:
    border-color var(--transition),
    transform var(--transition),
    box-shadow var(--transition);
}

.award-card:hover {
  border-color: rgba(127, 176, 255, 0.45);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.award-icon {
  font-size: 1.6rem;
  line-height: 1;
}

.award-title {
  margin-top: 0.9rem;
  font-size: 1.1rem;
}

.award-desc {
  margin-top: 0.35rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

/* -------------------------------- Contacto --------------------------------- */
.contact-section {
  padding-block: clamp(72px, 10vw, 120px);
}

.contact-card {
  max-width: 720px;
  margin-inline: auto;
  padding: clamp(2rem, 5vw, 3.5rem);
  text-align: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(420px 260px at 50% 0%, rgba(37, 99, 235, 0.16), transparent 70%),
    var(--color-surface);
}

.contact-card .section-label {
  margin-bottom: 0.75rem;
}

.contact-intro {
  margin: 1rem auto 1.75rem;
  max-width: 52ch;
  color: var(--color-muted);
}

.contact-list {
  display: grid;
  gap: 0.85rem;
  max-width: 560px;
  margin: 0 auto 2rem;
  text-align: left;
}

.contact-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface-2);
  font-size: 0.92rem;
  word-break: break-all;
}

.contact-label {
  flex-shrink: 0;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-muted);
}

.contact-item a {
  color: var(--color-accent-text);
  font-weight: 600;
  text-align: right;
}

.contact-item a:hover {
  text-decoration: underline;
}

.contact-cta {
  margin-top: 0.5rem;
}

/* -------------------------------- Footer ----------------------------------- */
.footer {
  padding: 2rem 0;
  border-top: 1px solid var(--color-border);
  background: #08101D;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.footer-copy {
  font-size: 0.88rem;
  color: var(--color-muted);
}

.footer-links {
  display: flex;
  gap: 1.25rem;
}

.footer-links a {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-muted);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-accent-text);
}

/* ---------------------------- Animaciones (scroll) ------------------------- */
html.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.6s ease,
    transform 0.6s ease;
}

html.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------- Responsive ------------------------------ */
@media (max-width: 1040px) {
  .nav-toggle {
    display: flex;
  }

  .nav-cta {
    display: none;
  }

  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.5rem 1.5rem;
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 24px 40px rgba(0, 0, 0, 0.4);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition:
      transform 0.25s ease,
      opacity 0.25s ease,
      visibility 0.25s;
  }

  .nav-links.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links .nav-link {
    padding: 0.85rem 0.5rem;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-cta-drawer {
    display: inline-flex;
    margin-top: 1rem;
  }

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

  .hero-card {
    max-width: 520px;
  }

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

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

@media (max-width: 640px) {
  .container {
    padding-inline: 18px;
  }

  .timeline {
    padding-left: 1.6rem;
  }

  .timeline-marker {
    left: -1.6rem;
  }

  .timeline-head {
    flex-direction: column;
    gap: 0.5rem;
  }

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

  .contact-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.3rem;
  }

  .contact-item a {
    text-align: left;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 420px) {
  .hero-actions .btn {
    width: 100%;
  }
}

/* --------------------------- Preferencia: menos movimiento ----------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
  }

  html.js .reveal {
    opacity: 1;
    transform: none;
  }
}