/* Basado en docs/assets/css/style.css — paleta afinada a tonos azul / negro del perfil */
:root {
  --primary-color: #2563eb;
  --primary-soft: #93c5fd;
  --secondary-color: #6366f1;
  --accent-color: #f59e0b;

  --gradient-primary: linear-gradient(135deg, #1e40af 0%, #3b82f6 45%, #6366f1 100%);
  --gradient-profile: linear-gradient(155deg, #1e3a8a 0%, #2563eb 42%, #4f46e5 78%, #6366f1 100%);
  --gradient-profile-edge: linear-gradient(180deg, rgba(255, 255, 255, 0.14) 0%, transparent 38%);
  --gradient-hero-mesh: radial-gradient(ellipse 120% 80% at 20% 40%, rgba(147, 197, 253, 0.35), transparent 50%),
    radial-gradient(ellipse 100% 60% at 80% 60%, rgba(99, 102, 241, 0.2), transparent 45%);

  --bg-primary: #ffffff;
  --bg-secondary: #f0f7ff;
  --bg-dark: #0f172a;

  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-light: #94a3b8;

  --border-color: #e2e8f0;
  --border-radius: 12px;
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 25px -5px rgba(30, 64, 175, 0.12);
  --gradient-about-soft: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 35%, #eff6ff 68%, #ecfeff 100%);
  --gradient-about-stripe: linear-gradient(180deg, #1d4ed8 0%, #6366f1 45%, #0d9488 100%);

  --header-height: 52px;
  --aside-width: min(280px, 32vw);
  --transition: all 0.3s ease;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-padding-top: calc(var(--header-height) + 12px);
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.65;
  color: var(--text-primary);
  background: var(--bg-secondary);
  padding: 0 24px 48px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 9999;
  padding: 0.75rem 1rem;
  background: var(--primary-color);
  color: #fff;
  font-weight: 600;
  border-radius: 6px;
}

.skip-link:focus {
  left: 16px;
  top: 16px;
}

/* Header (navegación + franja degradada tipo GitHub Pages / docs) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  margin: 0 -24px 24px;
  padding: 0 24px;
  background: rgba(240, 247, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  isolation: isolate;
}

.site-header::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, #6366f1 0%, #2563eb 35%, #0ea5e9 70%, #10b981 100%);
  opacity: 0.9;
  pointer-events: none;
}

.site-header__inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: var(--header-height);
  gap: 16px;
  position: relative;
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
  justify-content: center;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.site-nav__link:hover,
.site-nav__link:focus-visible {
  color: var(--primary-color);
  background: rgba(37, 99, 235, 0.09);
  outline: none;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.15);
}

.site-nav__icon {
  flex-shrink: 0;
  opacity: 0.88;
  transition: opacity 0.2s ease;
}

.site-nav__link:hover .site-nav__icon,
.site-nav__link:focus-visible .site-nav__icon {
  opacity: 1;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: none;
  border-radius: 8px;
  background: var(--bg-primary);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.nav-toggle__bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text-primary);
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* Layout: perfil (sticky) + contenido */
.page-layout {
  display: grid;
  grid-template-columns: var(--aside-width) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  max-width: 1100px;
  margin: 0 auto;
  /* stretch: la columna izquierda ocupa toda la altura del contenido;
     si no, el sticky del perfil no tiene “carril” y sale del viewport de golpe */
  align-items: stretch;
}

.profile-aside {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.profile-card {
  position: sticky;
  top: calc(var(--header-height) + 16px);
  align-self: flex-start;
  padding: 24px 20px;
  isolation: isolate;
  background: var(--gradient-profile);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255, 255, 255, 0.06) inset;
  text-align: center;
  overflow: hidden;
}

.profile-card::before {
  content: '';
  position: absolute;
  z-index: 0;
  inset: 0;
  border-radius: inherit;
  background: var(--gradient-profile-edge);
  pointer-events: none;
}

.profile-card::after {
  content: '';
  position: absolute;
  z-index: 0;
  inset: 0;
  border-radius: inherit;
  opacity: 0.35;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grainP" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="0.65" fill="rgba(255,255,255,0.14)"/></pattern></defs><rect width="100" height="100" fill="url(%23grainP)"/></svg>');
  pointer-events: none;
}

.profile-card > * {
  position: relative;
  z-index: 1;
}

.profile-card__photo {
  display: block;
  width: 200px;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1;
  margin: 0 auto 16px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(255, 255, 255, 0.45);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.35);
}

.profile-card__name {
  margin: 0 0 8px;
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.25;
  text-shadow: 0 1px 2px rgba(15, 23, 42, 0.2);
}

.profile-card__role {
  margin: 0 0 10px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #fde68a;
}

.profile-card__meta {
  margin: 0 0 8px;
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.88);
}

.profile-card__years {
  margin: 0;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.72);
}

.main-content {
  min-width: 0;
}

/* Intro (sustituye al hero con gradiente; tono documentación) */
.intro-block {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 28px 32px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-sm);
}

.intro-block__heading {
  margin: 0 0 16px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 12px;
}

.intro-lead {
  margin: 0 0 20px;
  font-size: 1.08rem;
  color: var(--text-secondary);
  max-width: 62ch;
}

.intro-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.intro-tags li {
  margin: 0;
}

.intro-tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
}

/* Sections */
.section-title {
  text-align: center;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  margin: 0 0 24px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border-color);
  color: var(--text-primary);
}

.section-title--left {
  text-align: center;
  border-bottom-color: transparent;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  border-bottom: none;
  padding-bottom: 0;
}

.about-section {
  margin: 48px 0;
}

.about-card {
  background: var(--bg-primary);
  padding: 32px 36px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.about-card--accent {
  border: 1px solid rgba(37, 99, 235, 0.12);
  background: var(--gradient-about-soft);
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255, 255, 255, 0.85);
  padding: 32px 36px 32px 40px;
  position: relative;
  overflow: hidden;
}

.about-card--accent::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 5px;
  border-radius: 0 6px 6px 0;
  background: var(--gradient-about-stripe);
  box-shadow: 2px 0 12px rgba(37, 99, 235, 0.25);
}

.about-card--accent::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(ellipse 90% 55% at 100% 0%, rgba(99, 102, 241, 0.06), transparent 55%);
}

.about-card--accent p {
  position: relative;
  z-index: 1;
}

.about-card p {
  margin: 0 0 1rem;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.about-card p:last-child {
  margin-bottom: 0;
}

/* Timeline (CodePen: https://codepen.io/NilsWe/pen/Axdozd — adaptado a la paleta del portafolio) */
.roadmap-section {
  margin: 48px 0;
}

.experience-codepen {
  margin-top: 8px;
}

.experience-codepen .timeline {
  position: relative;
  width: 100%;
  margin: 1.25rem auto 0;
  padding: 1em 0;
  list-style: none;
}

.experience-codepen .timeline::before {
  position: absolute;
  left: 50%;
  top: 0;
  content: ' ';
  display: block;
  width: 6px;
  height: 100%;
  margin-left: -3px;
  background: linear-gradient(
    to bottom,
    rgba(37, 99, 235, 0) 0%,
    #2563eb 10%,
    #6366f1 50%,
    #0ea5e9 90%,
    rgba(14, 165, 233, 0) 100%
  );
  z-index: 5;
  border-radius: 4px;
  box-shadow: 0 0 20px rgba(37, 99, 235, 0.25);
}

.experience-codepen .timeline li {
  padding: 1em 0;
}

.experience-codepen .timeline li::after {
  content: '';
  display: block;
  height: 0;
  clear: both;
  visibility: hidden;
}

.experience-codepen .direction-l {
  position: relative;
  width: 300px;
  max-width: calc(50% - 24px);
  float: left;
  text-align: right;
}

.experience-codepen .direction-r {
  position: relative;
  width: 300px;
  max-width: calc(50% - 24px);
  float: right;
}

.experience-codepen .flag-wrapper {
  position: relative;
  display: inline-block;
  text-align: center;
}

.experience-codepen .flag {
  position: relative;
  display: inline;
  background: var(--bg-primary);
  padding: 8px 12px;
  border-radius: 8px;
  font-weight: 600;
  text-align: left;
  font-size: 0.75rem;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.experience-codepen .direction-l .flag {
  box-shadow: -2px 2px 8px rgba(15, 23, 42, 0.08), 0 0 0 1px rgba(15, 23, 42, 0.04);
}

.experience-codepen .direction-r .flag {
  box-shadow: 2px 2px 8px rgba(15, 23, 42, 0.08), 0 0 0 1px rgba(15, 23, 42, 0.04);
}

.experience-codepen .direction-l .flag::before,
.experience-codepen .direction-r .flag::before {
  position: absolute;
  top: 50%;
  content: ' ';
  display: block;
  width: 14px;
  height: 14px;
  margin-top: -7px;
  background: var(--bg-primary);
  border-radius: 50%;
  border: 4px solid var(--primary-color);
  z-index: 10;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.experience-codepen .direction-l .flag::before {
  right: -36px;
}

.experience-codepen .direction-r .flag::before {
  left: -36px;
}

.experience-codepen .direction-l .flag::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 50%;
  height: 0;
  width: 0;
  margin-top: -8px;
  border: solid transparent;
  border-left-color: var(--bg-primary);
  border-width: 8px;
  pointer-events: none;
  filter: drop-shadow(2px 0 1px rgba(15, 23, 42, 0.06));
}

.experience-codepen .direction-r .flag::after {
  content: '';
  position: absolute;
  right: 100%;
  top: 50%;
  height: 0;
  width: 0;
  margin-top: -8px;
  border: solid transparent;
  border-right-color: var(--bg-primary);
  border-width: 8px;
  pointer-events: none;
  filter: drop-shadow(-2px 0 1px rgba(15, 23, 42, 0.06));
}

.experience-codepen .flag a {
  color: var(--primary-color);
  text-decoration: none;
}

.experience-codepen .flag a:hover,
.experience-codepen .flag a:focus-visible {
  text-decoration: underline;
}

.experience-codepen .time-wrapper {
  display: inline;
  line-height: 1em;
  font-size: 0.72rem;
  color: var(--primary-color);
  vertical-align: middle;
  font-weight: 600;
}

.experience-codepen .direction-l .time-wrapper {
  float: left;
}

.experience-codepen .direction-r .time-wrapper {
  float: right;
}

.experience-codepen .time {
  display: inline-block;
  padding: 4px 8px;
  margin-top: 6px;
  background: var(--bg-secondary);
  border-radius: 6px;
  border: 1px solid var(--border-color);
  font-style: normal;
}

.experience-codepen .desc {
  margin: 1em 0.75em 0 0;
  font-size: 0.9rem;
  font-style: italic;
  line-height: 1.55;
  color: var(--text-secondary);
  clear: both;
}

.experience-codepen .direction-r .desc {
  margin: 1em 0 0 0.75em;
  text-align: left;
}

.experience-codepen .direction-l .desc {
  text-align: right;
}

.experience-codepen .timeline-entry--current .flag {
  background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
  border-color: rgba(245, 158, 11, 0.45);
}

.experience-codepen .timeline-entry--current .flag::before {
  border-color: #f59e0b;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.25);
}

.experience-codepen .timeline-entry--highlight .flag {
  background: linear-gradient(135deg, #eef2ff 0%, #e0e7ff 100%);
  border-color: rgba(99, 102, 241, 0.35);
}

.experience-codepen .timeline-entry--highlight .flag::before {
  border-color: #6366f1;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

.experience-codepen .timeline-entry--past .flag {
  background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
  border-color: rgba(16, 185, 129, 0.35);
}

.experience-codepen .timeline-entry--past .flag::before {
  border-color: #10b981;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

@media screen and (max-width: 660px) {
  .experience-codepen .timeline {
    width: 100%;
    padding: 3rem 0 1rem;
  }

  .experience-codepen .timeline li {
    padding: 2em 0;
  }

  .experience-codepen .direction-l,
  .experience-codepen .direction-r {
    float: none;
    width: 100%;
    max-width: none;
    text-align: center;
  }

  .experience-codepen .flag-wrapper {
    text-align: center;
  }

  .experience-codepen .flag {
    z-index: 15;
  }

  .experience-codepen .direction-l .flag::before,
  .experience-codepen .direction-r .flag::before {
    position: absolute;
    top: -28px;
    left: 50%;
    right: auto;
    margin-left: -7px;
    margin-top: 0;
  }

  .experience-codepen .direction-l .flag::after,
  .experience-codepen .direction-r .flag::after {
    content: '';
    position: absolute;
    left: 50%;
    top: -8px;
    right: auto;
    height: 0;
    width: 0;
    margin-left: -8px;
    border: solid transparent;
    border-bottom-color: var(--bg-primary);
    border-width: 8px;
    pointer-events: none;
    filter: none;
  }

  .experience-codepen .timeline-entry--current .direction-l .flag::after,
  .experience-codepen .timeline-entry--current .direction-r .flag::after {
    border-bottom-color: #fef3c7;
  }

  .experience-codepen .timeline-entry--highlight .direction-l .flag::after,
  .experience-codepen .timeline-entry--highlight .direction-r .flag::after {
    border-bottom-color: #e0e7ff;
  }

  .experience-codepen .timeline-entry--past .direction-l .flag::after,
  .experience-codepen .timeline-entry--past .direction-r .flag::after {
    border-bottom-color: #d1fae5;
  }

  .experience-codepen .direction-l .time-wrapper,
  .experience-codepen .direction-r .time-wrapper {
    float: none;
    display: block;
    margin-top: 4px;
  }

  .experience-codepen .desc {
    text-align: center;
    margin: 1em 0.5rem 0;
  }
}

/* Education */
.education-section {
  margin: 48px 0;
}

.education-card {
  background: var(--bg-primary);
  padding: 32px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.education-card--align-left {
  text-align: left;
  margin: 0;
  max-width: none;
}

.education-card h3 {
  margin: 0 0 8px;
  font-size: 1.2rem;
  color: var(--text-primary);
}

.education-card__school {
  margin: 0 0 8px;
  font-weight: 600;
  color: var(--primary-color);
}

.education-card .timeline-date {
  margin: 0;
}

/* Skills */
.skills-section {
  margin: 48px 0;
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px 18px;
  max-width: 900px;
  margin: 0 auto;
  padding: 0;
  list-style: none;
}

.skills-grid--left {
  justify-content: flex-start;
  margin: 0;
  max-width: none;
}

.skills-grid li {
  margin: 0;
}

.skill-tag {
  cursor: pointer;
  display: inline-block;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--bg-primary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
  transition:
    color 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.2s ease;
}

.skill-tag:hover {
  color: var(--primary-color);
  border-color: rgba(37, 99, 235, 0.45);
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.07) 0%, rgba(99, 102, 241, 0.05) 100%);
  box-shadow:
    0 4px 14px rgba(37, 99, 235, 0.12),
    0 0 0 1px rgba(37, 99, 235, 0.08);
  transform: translateY(-2px);
}

/* Contact */
.contact-section {
  margin: 48px 0 24px;
}

.contact-card {
  background: var(--bg-primary);
  padding: 40px;
  border-radius: var(--border-radius);
  text-align: center;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.contact-card--align-left {
  text-align: left;
}

.contact-links--left {
  justify-content: flex-start;
}

.contact-card__title {
  font-size: 1.75rem;
  margin: 0 0 12px;
  color: var(--text-primary);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.contact-card p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin: 0 0 28px;
}

.contact-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

.contact-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  background: var(--bg-secondary);
  border-radius: 25px;
  font-weight: 600;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  text-decoration: none;
}

.contact-item--link:hover,
.contact-item--link:focus-visible {
  background: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.contact-icon {
  font-size: 0.85rem;
  font-weight: 800;
  font-family: Georgia, serif;
  color: var(--primary-color);
}

.contact-item--link:hover .contact-icon,
.contact-item--link:focus-visible .contact-icon {
  color: #fff;
}

/* Footer */
.site-footer {
  text-align: center;
  padding: 24px 0;
  color: var(--text-light);
  font-size: 0.9rem;
  max-width: 1100px;
  margin: 0 auto;
}

.site-footer p {
  margin: 0;
}

h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.2;
}

/* Animación entrada */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.intro-block,
.about-card,
.experience-codepen .timeline > li,
.education-card,
.skills-grid,
.contact-card {
  animation: fadeInUp 0.55s ease-out both;
}

.experience-codepen .timeline > li:nth-child(1) { animation-delay: 0.05s; }
.experience-codepen .timeline > li:nth-child(2) { animation-delay: 0.08s; }
.experience-codepen .timeline > li:nth-child(3) { animation-delay: 0.11s; }
.experience-codepen .timeline > li:nth-child(4) { animation-delay: 0.14s; }
.experience-codepen .timeline > li:nth-child(5) { animation-delay: 0.17s; }
.experience-codepen .timeline > li:nth-child(6) { animation-delay: 0.2s; }
.experience-codepen .timeline > li:nth-child(7) { animation-delay: 0.23s; }
.experience-codepen .timeline > li:nth-child(8) { animation-delay: 0.26s; }
.experience-codepen .timeline > li:nth-child(9) { animation-delay: 0.29s; }

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .intro-block,
  .about-card,
  .experience-codepen .timeline > li,
  .education-card,
  .skills-grid,
  .contact-card {
    animation: none;
  }

  .skill-tag:hover,
  .contact-item--link:hover {
    transform: none;
  }

  .nav-toggle__bar {
    transition: none;
  }
}

/* Responsive */
@media (max-width: 768px) {
  body {
    padding: 0 15px 40px;
  }

  .site-header {
    margin: 0 -15px 12px;
    padding: 0 15px;
  }

  .site-header__inner {
    justify-content: flex-end;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 16px 20px 20px;
    background: rgba(240, 247, 255, 0.97);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    display: none;
  }

  .site-nav.is-open {
    display: block;
  }

  .site-header__inner {
    position: relative;
    flex-wrap: wrap;
  }

  .site-nav .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .site-nav__link {
    display: flex;
    width: 100%;
    padding: 12px 14px;
    border-radius: 10px;
  }

  .site-nav__link:hover {
    background: rgba(37, 99, 235, 0.08);
    box-shadow: none;
  }

  .page-layout {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .profile-aside {
    position: sticky;
    top: var(--header-height);
    z-index: 90;
    margin: 0 -15px;
    padding: 10px 15px 12px;
    background: linear-gradient(to bottom, var(--bg-secondary) 55%, transparent);
  }

  .profile-card {
    position: relative;
    top: auto;
    display: grid;
    grid-template-columns: 88px 1fr;
    grid-template-areas:
      "photo name"
      "photo role"
      "photo meta"
      "photo years";
    column-gap: 16px;
    row-gap: 2px;
    text-align: left;
    padding: 14px 16px;
    align-items: center;
  }

  .profile-card__photo {
    grid-area: photo;
    width: 88px;
    margin: 0;
    align-self: center;
  }

  .profile-card__name {
    grid-area: name;
    font-size: 1.1rem;
    margin: 0;
  }

  .profile-card__role {
    grid-area: role;
    margin: 0;
    font-size: 0.85rem;
  }

  .profile-card__meta {
    grid-area: meta;
    margin: 0;
    font-size: 0.8rem;
  }

  .profile-card__years {
    grid-area: years;
    margin: 0;
    font-size: 0.78rem;
  }

  .intro-block {
    padding: 22px 18px;
  }

}

@media (max-width: 480px) {
  .about-card {
    padding: 24px 20px;
  }

  .profile-card {
    grid-template-columns: 72px 1fr;
    grid-template-areas:
      "photo name"
      "photo role"
      "photo meta"
      "photo years";
  }

  .profile-card__photo {
    width: 72px;
  }
}

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--secondary-color);
}