/*
  Стили персонального сайта — редизайн.
  Mobile-first, тёмная тема по умолчанию.
  Структура: переменные → reset → фон → nav → layout → hero →
  проекты → опыт → образование → контакты → footer →
  аккордеон → теги → scroll reveal → переключатели →
  light theme → reduced motion → print.
*/

/* === Переменные === */

:root {
  --bg: #0a0e14;
  --bg-surface: rgba(20, 26, 35, 0.85);
  --text: #e6e6e6;
  --text-secondary: #8b949e;
  --accent: #39bae6;
  --accent-rgb: 57, 186, 230;
  --accent-dim: #2a8ab5;
  --card-bg: rgba(20, 26, 35, 0.8);
  --card-border: rgba(57, 186, 230, 0.2);
  --font-heading: 'Exo 2', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --nav-height: 56px;
  --section-gap: 56px;
  --content-max: 900px;
}

/* === Reset & Base === */

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

/* Системная защита от overflow: любой длинный текст переносится;
   flex/grid-дети могут ужиматься ниже min-content — не растягивают родителя. */
* { min-width: 0; }
html { overflow-wrap: anywhere; scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-height) + 16px); }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  margin: 0;
  line-height: 1.3;
}

p { margin: 0 0 0.75rem; }
ul { margin: 0; padding-left: 1.25rem; }
li { margin-bottom: 0.4rem; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-to-content {
  position: absolute;
  top: -100px;
  left: 0;
  z-index: 9999;
  padding: 0.75rem 1.5rem;
  background: var(--accent);
  color: #0a0e14;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 8px 0;
  transition: top 0.15s ease;
}
.skip-to-content:focus,
.skip-to-content:focus-visible { top: 0; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}
a:focus-visible,
button:focus-visible,
[role="button"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* === Фоновая сетка — один слой === */

.bg-layer {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.bg-grid {
  position: absolute;
  inset: -50%;
  background-image:
    linear-gradient(rgba(var(--accent-rgb), 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--accent-rgb), 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  animation: bg-grid-move 30s linear infinite;
}

@keyframes bg-grid-move {
  from { transform: translate(0, 0); }
  to { transform: translate(48px, 48px); }
}

/* === Sticky Nav === */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  height: var(--nav-height);
  padding: 0 max(1rem, env(safe-area-inset-right)) 0 max(1rem, env(safe-area-inset-left));
  transition: transform 0.3s ease, background 0.3s ease;
}

.site-nav.nav-solid {
  background: rgba(10, 14, 20, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--card-border);
}

.site-nav.nav-hidden {
  transform: translateY(-100%);
}

.nav-name {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
  margin-right: auto;
  flex: 0 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-links {
  display: none;
  gap: 1.5rem;
}

.nav-link {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
  white-space: nowrap;
}

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

.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 0.75rem;
}

/* Burger */
.nav-burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-burger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-burger.is-active .nav-burger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-burger.is-active .nav-burger-line:nth-child(2) {
  opacity: 0;
}
.nav-burger.is-active .nav-burger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.nav-links.is-open {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: rgba(10, 14, 20, 0.97);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 1rem max(1rem, env(safe-area-inset-right)) 1rem max(1rem, env(safe-area-inset-left));
  gap: 0.25rem;
  border-bottom: 1px solid var(--card-border);
}

.nav-links.is-open .nav-link {
  font-size: 1rem;
  padding: 0.75rem 0;
  min-height: 44px;
  display: flex;
  align-items: center;
}

/* Desktop nav */
@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
  .nav-burger {
    display: none;
  }
}

/* Compact nav for very narrow screens (≤ 360px) */
@media (max-width: 360px) {
  .nav-name { font-size: 0.85rem; }
  .nav-controls { gap: 0.25rem; margin-left: 0.25rem; }
  .theme-btn, .lang-btn { padding: 0.3rem 0.4rem; font-size: 0.75rem; min-width: 32px; }
}

/* === Layout === */

main {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 max(1rem, env(safe-area-inset-right)) 0 max(1rem, env(safe-area-inset-left));
}

section {
  padding: var(--section-gap) 0 0;
}

#hero {
  padding-top: calc(var(--nav-height) + 40px);
  padding-bottom: 1.5rem;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--accent);
}

/* === Hero === */

.hero-inner {
  width: 100%;
}

.hero-photo-wrap {
  margin-bottom: 1.5rem;
}

.hero-photo {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--card-border);
}

@media (orientation: landscape) and (max-height: 500px) {
  .hero-photo { width: 96px; height: 96px; }
}

.hero-name-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem 0.9rem;
  margin-bottom: 0.5rem;
}

.hero-name {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: #4ade80;
  font-weight: 500;
}

.hero-status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #4ade80;
  border-radius: 50%;
  animation: status-pulse 2s ease-in-out infinite;
}

@keyframes status-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-tag {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  min-height: 1.6em;
  contain: layout style;
}

.hero-tag-rotating {
  display: inline;
  vertical-align: baseline;
  white-space: pre;
}

.hero-tag-rotating.is-typing::after {
  content: '';
  display: inline-block;
  width: 2px;
  height: 1em;
  vertical-align: -0.12em;
  margin-left: 2px;
  background: var(--accent);
  animation: heroCaretBlink 1s steps(1) infinite;
}

@keyframes heroCaretBlink {
  0%, 50% { opacity: 1; }
  50.01%, 100% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-tag-rotating.is-typing::after { animation: none; opacity: 0; }
}

.hero-value {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text);
  margin-bottom: 1rem;
  max-width: 600px;
}

.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 1.5rem;
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  cursor: pointer;
  min-height: 44px;
}

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

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--card-border);
}

/* === Featured Project === */

.project-featured {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.25rem;
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.project-featured::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at top right, rgba(var(--accent-rgb), 0.08), transparent 55%);
  opacity: 0.9;
}

.project-featured > * { position: relative; }

.pf-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.pf-media {
  flex-shrink: 0;
  display: block;
  width: 72px;
  height: 72px;
  border-radius: 14px;
  overflow: hidden;
  background: rgba(var(--accent-rgb), 0.08);
  border: 1px solid rgba(var(--accent-rgb), 0.2);
  transition: transform 0.25s, border-color 0.25s;
}

.pf-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.pf-header-text {
  min-width: 0;
  flex: 1;
}

.pf-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
  margin: 0 0 0.25rem;
}

.pf-tagline {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin: 0;
}

.pf-summary {
  font-size: 0.95rem;
  line-height: 1.55;
  margin: 0 0 1.25rem;
  color: var(--text);
}

.pf-section {
  margin-bottom: 1.25rem;
}

.pf-section-heading {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 0.6rem;
}

.pf-chips {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.pf-chip {
  padding: 0.3rem 0.7rem;
  background: rgba(var(--accent-rgb), 0.08);
  border: 1px solid rgba(var(--accent-rgb), 0.22);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text);
  white-space: nowrap;
}

.pf-stack {
  margin-bottom: 1.25rem;
}

.pf-stack-summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.7rem;
  border: 1px solid rgba(var(--accent-rgb), 0.25);
  border-radius: 6px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  background: rgba(var(--accent-rgb), 0.05);
  transition: color 0.2s, background 0.2s, border-color 0.2s;
  user-select: none;
}

.pf-stack-summary::-webkit-details-marker { display: none; }

.pf-stack-summary::before {
  content: '';
  width: 6px;
  height: 6px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg);
  transition: transform 0.2s;
  margin-right: 0.15rem;
}

.pf-stack[open] .pf-stack-summary::before {
  transform: rotate(45deg);
}

.pf-stack-count {
  opacity: 0.7;
  font-size: 0.75rem;
}

.pf-stack[open] .pf-stack-summary {
  color: var(--accent);
  border-color: rgba(var(--accent-rgb), 0.45);
  margin-bottom: 0.6rem;
}

@media (hover: hover) {
  .pf-stack-summary:hover {
    color: var(--accent);
    border-color: rgba(var(--accent-rgb), 0.45);
  }
}

.pf-stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.pf-footer {
  display: flex;
  justify-content: flex-start;
}

.pf-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.1rem;
  background: var(--accent);
  color: var(--bg);
  border-radius: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s, filter 0.2s;
  box-shadow: 0 6px 18px rgba(var(--accent-rgb), 0.25);
}

.pf-cta:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
  box-shadow: 0 10px 24px rgba(var(--accent-rgb), 0.35);
}

.pf-cta svg { stroke: currentColor; }

.pf-cta-host {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--bg);
  opacity: 0.75;
  padding-left: 0.5rem;
  border-left: 1px solid rgba(0, 0, 0, 0.2);
  margin-left: 0.25rem;
}

@media (max-width: 479px) {
  .pf-cta-host { display: none; }
}

/* === Journey Timeline === */

.journey-timeline {
  position: relative;
  padding-left: 28px;
}

.journey-timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--card-border);
}

.journey-item {
  position: relative;
  padding-bottom: 1.5rem;
}

.journey-item:last-child {
  padding-bottom: 0;
}

.journey-dot {
  position: absolute;
  left: -28px;
  top: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--card-border);
  z-index: 1;
  transition: border-color 0.3s, background 0.3s;
}

.journey-item-current .journey-dot {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 8px rgba(var(--accent-rgb), 0.4);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 4px rgba(var(--accent-rgb), 0.3); }
  50% { box-shadow: 0 0 12px rgba(var(--accent-rgb), 0.7); }
}

.journey-content {
  position: relative;
  border: 1px solid transparent;
  border-radius: 8px;
}

.journey-label {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
}

.journey-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  opacity: 0.7;
}

.journey-text {
  flex: 1 1 100%;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.journey-head {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  width: 100%;
  background: none;
  border: none;
  padding: 0.5rem 0.6rem;
  margin: 0 -0.6rem;
  cursor: pointer;
  text-align: left;
  color: inherit;
  font-family: inherit;
  font-size: inherit;
  border-radius: 6px;
}

.journey-head-static {
  cursor: default;
  padding: 0.4rem 0;
  margin: 0;
}

.journey-head-text {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.2rem 0.5rem;
}

.journey-chevron {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  margin-top: 0.15rem;
  color: var(--text-secondary);
  opacity: 0.55;
  transition: transform 0.12s ease, opacity 0.12s ease, color 0.12s ease;
}

button.journey-head[aria-expanded="true"] .journey-chevron {
  transform: rotate(180deg);
  color: var(--accent);
  opacity: 1;
}

@media (hover: hover) {
  button.journey-head:hover {
    background: rgba(var(--accent-rgb), 0.07);
  }
  button.journey-head:hover .journey-chevron {
    color: var(--accent);
    opacity: 1;
  }
}

/* Card transformation when expanded */
.journey-item.is-open .journey-content {
  background: rgba(var(--accent-rgb), 0.04);
  border-color: rgba(var(--accent-rgb), 0.22);
  padding: 0 0.75rem 0.75rem;
  margin: 0 -0.75rem;
}

.journey-item.is-open .journey-head {
  margin-left: -0.15rem;
  margin-right: -0.15rem;
  background: transparent;
}

.journey-item.is-open .journey-dot {
  border-color: var(--accent);
  background: var(--accent);
}

/* Мгновенное раскрытие + 120мс opacity-fade контента. Никаких layout-транзиций. */
.journey-body {
  display: none;
  margin-top: 0.5rem;
  padding: 0.75rem 0;
  border-top: 1px solid var(--card-border);
  flex-direction: column;
  gap: 0.4rem;
}

.journey-item.is-open .journey-body {
  display: flex;
  border-top-color: rgba(var(--accent-rgb), 0.2);
}

.journey-head[aria-expanded="true"] .journey-text {
  display: none;
}

.journey-detail-role {
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--text);
}

.journey-detail-period {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  opacity: 0.7;
}

.journey-detail-desc {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.journey-edu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.journey-edu-degree {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
}

.journey-edu-desc {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.journey-edu-meta {
  margin: 0;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  opacity: 0.7;
}

.journey-body .card-tags {
  margin-top: 0.25rem;
}

/* === Контакты === */

.contacts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  min-height: 44px;
  transition: border-color 0.2s, background 0.2s;
}

a.contact-card:hover {
  border-color: var(--accent);
  background: rgba(var(--accent-rgb), 0.04);
}

a.contact-card:active {
  transform: scale(0.98);
}

.contact-card-icon {
  flex-shrink: 0;
  color: var(--accent);
  display: flex;
  align-items: center;
}

.contact-card-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.contacts-divider {
  height: 1px;
  background: var(--card-border);
  margin: 1.25rem 0;
}

.contacts-info-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.contact-card-info {
  cursor: default;
}

.contact-card-info .contact-card-icon {
  color: var(--text-secondary);
}

.contact-card-info .contact-card-label {
  font-family: var(--font-body);
  color: var(--text-secondary);
}

/* === Tags === */

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.75rem;
}

.card-tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: rgba(var(--accent-rgb), 0.1);
  border: 1px solid rgba(var(--accent-rgb), 0.2);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  white-space: nowrap;
}

/* === Visitors === */

.visitors-hero {
  text-align: center;
  margin-bottom: 1.5rem;
}

.visitors-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.1;
}

.visitors-label {
  display: block;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.visitors-map-wrap {
  text-align: center;
  margin-bottom: 1.5rem;
}

.visitors-map {
  max-width: 700px;
  margin: 0 auto;
}

.visitors-map svg {
  width: 100%;
  height: auto;
}

.visitors-map svg path {
  fill: rgba(var(--accent-rgb), 0.08);
  stroke: var(--card-border);
  stroke-width: 0.4;
  stroke-linejoin: round;
  transition: fill 0.3s;
}

.visitors-map svg path.visited-country,
.visitors-map svg .visited-country path {
  fill: rgba(var(--accent-rgb), 0.45);
  stroke: var(--accent);
  stroke-width: 0.8;
}

.visitors-countries {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.visitors-country-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.7rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  font-size: 0.8rem;
  white-space: nowrap;
}

.visitors-country-flag {
  font-size: 0.95rem;
  line-height: 1;
}

.visitors-country-name {
  color: var(--text);
}

.visitors-country-count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
}

/* === Footer === */

.site-footer {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 3rem max(1rem, env(safe-area-inset-right)) max(2rem, env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.footer-resume-link {
  color: var(--accent);
}

/* === Scroll Reveal === */

section {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

section.in-view {
  opacity: 1;
  transform: none;
}

/* === Theme & Lang Switchers === */

.theme-switcher,
.lang-switcher {
  display: flex;
  gap: 2px;
  background: rgba(var(--accent-rgb), 0.1);
  border-radius: 6px;
  padding: 2px;
}

.theme-btn,
.lang-btn {
  padding: 0.4rem 0.6rem;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.8rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  font-family: var(--font-body);
  min-width: 36px;
  min-height: 32px;
  text-align: center;
}

.theme-btn-active,
.lang-btn-active {
  background: rgba(var(--accent-rgb), 0.25);
  color: var(--text);
}

/* === Hover (pointer only) === */

@media (hover: hover) {
  .btn-primary:hover {
    background: var(--accent-dim);
  }
  .btn-secondary:hover {
    border-color: var(--accent);
    background: rgba(var(--accent-rgb), 0.08);
  }
  .journey-item:hover .journey-dot {
    border-color: var(--accent);
  }
  .nav-link:hover {
    color: var(--accent);
  }
  .theme-btn:hover,
  .lang-btn:hover {
    color: var(--text);
    background: rgba(var(--accent-rgb), 0.15);
  }
}

/* === Active states (touch feedback) === */

.btn-primary:active {
  background: var(--accent-dim);
}
.btn-secondary:active {
  border-color: var(--accent);
  background: rgba(var(--accent-rgb), 0.08);
}
/* === Desktop (768px+) === */

@media (min-width: 768px) {
  :root {
    --section-gap: 64px;
  }

  .hero-name {
    font-size: 2.75rem;
  }

  .hero-tag {
    font-size: 1.25rem;
  }

  .hero-photo {
    width: 200px;
    height: 200px;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .project-featured {
    padding: 1.75rem;
    border-radius: 14px;
  }

  .pf-media {
    width: 96px;
    height: 96px;
  }

  .pf-name { font-size: 1.6rem; }
  .pf-tagline { font-size: 1rem; }
  .pf-summary { font-size: 1.05rem; }

  .contacts-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }

  .contacts-info-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }
}

/* === Large desktop (1024px+) === */

@media (min-width: 1024px) {
  :root {
    --section-gap: 72px;
  }

  main {
    padding: 0 2rem;
  }

  .hero-name {
    font-size: 3rem;
  }

  .hero-photo {
    width: 220px;
    height: 220px;
  }

  .site-nav {
    padding: 0 2rem;
  }

  .project-featured {
    padding: 2rem 2.25rem;
  }

  .pf-header { gap: 1.5rem; }
  .pf-media { width: 112px; height: 112px; }
}

/* === Light Theme === */

:root[data-theme="light"] {
  --bg: #f5f6f8;
  --bg-surface: rgba(255, 255, 255, 0.9);
  --text: #1a1a2e;
  --text-secondary: #5a6270;
  --card-bg: rgba(255, 255, 255, 0.85);
  --card-border: rgba(0, 0, 0, 0.1);
  --accent-dim: #1a6d94;
}

:root[data-theme="light"] .bg-grid {
  opacity: 0.4;
  background-image:
    linear-gradient(rgba(57, 186, 230, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 186, 230, 0.04) 1px, transparent 1px);
}

:root[data-theme="light"] .site-nav.nav-solid {
  background: rgba(245, 246, 248, 0.95);
  border-bottom-color: rgba(0, 0, 0, 0.08);
}

:root[data-theme="light"] .nav-links.is-open {
  background: rgba(245, 246, 248, 0.97);
  border-bottom-color: rgba(0, 0, 0, 0.08);
}

:root[data-theme="light"] .nav-burger-line {
  background: var(--text);
}

:root[data-theme="light"] a {
  color: var(--accent-dim);
}

:root[data-theme="light"] .contact-card {
  background: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  border-color: rgba(0, 0, 0, 0.08);
}

:root[data-theme="light"] .card-tag {
  background: rgba(57, 186, 230, 0.08);
  border-color: rgba(57, 186, 230, 0.15);
  color: var(--accent-dim);
}

:root[data-theme="light"] .btn-primary {
  background: var(--accent-dim);
  color: #fff;
}

:root[data-theme="light"] .btn-secondary {
  color: var(--accent-dim);
  border-color: rgba(0, 0, 0, 0.15);
}

:root[data-theme="light"] .hero-status {
  color: #15803d;
}

:root[data-theme="light"] .hero-status-dot {
  background: #15803d;
}

:root[data-theme="light"] .theme-switcher,
:root[data-theme="light"] .lang-switcher {
  background: rgba(0, 0, 0, 0.06);
}

:root[data-theme="light"] .theme-btn-active,
:root[data-theme="light"] .lang-btn-active {
  background: rgba(0, 0, 0, 0.1);
  color: var(--text);
}

:root[data-theme="light"] .section-title {
  color: var(--accent-dim);
}

:root[data-theme="light"] .pf-name,
:root[data-theme="light"] .pf-section-heading {
  color: var(--accent-dim);
}

:root[data-theme="light"] .pf-chip {
  background: rgba(57, 186, 230, 0.05);
}

:root[data-theme="light"] .pf-cta {
  background: var(--accent-dim);
  color: #fff;
  box-shadow: 0 6px 18px rgba(42, 138, 181, 0.25);
}

:root[data-theme="light"] .pf-cta:hover {
  box-shadow: 0 10px 24px rgba(42, 138, 181, 0.35);
}

:root[data-theme="light"] .pf-cta-host {
  color: #fff;
  border-left-color: rgba(255, 255, 255, 0.3);
}

:root[data-theme="light"] .pf-media {
  background: rgba(57, 186, 230, 0.06);
  border-color: rgba(57, 186, 230, 0.18);
}

:root[data-theme="light"] .journey-dot {
  background: var(--bg);
  border-color: rgba(0, 0, 0, 0.15);
}

:root[data-theme="light"] .journey-item-current .journey-dot {
  border-color: var(--accent-dim);
  background: var(--accent-dim);
}

:root[data-theme="light"] .journey-timeline::before {
  background: rgba(0, 0, 0, 0.1);
}

:root[data-theme="light"] .visitors-map svg path {
  fill: rgba(0, 0, 0, 0.04);
  stroke: rgba(0, 0, 0, 0.12);
}

:root[data-theme="light"] .visitors-map svg path.visited-country,
:root[data-theme="light"] .visitors-map svg .visited-country path {
  fill: rgba(57, 186, 230, 0.3);
  stroke: var(--accent-dim);
}

:root[data-theme="light"] .visitors-country-pill {
  background: #fff;
  border-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

:root[data-theme="light"] .visitors-country-count {
  color: var(--accent-dim);
}

/* === Reduced Motion === */

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

  section {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .bg-grid { animation: none; }
  .hero-status-dot { animation: none; }
  .journey-item-current .journey-dot { animation: none; }
  .site-nav { transition: none; }

  .journey-chevron { transition: none; }
}

/* === Print === */

@media print {
  .site-nav,
  .bg-layer,
  .hero-cta-row,
  .theme-switcher,
  .lang-switcher,
  .nav-burger {
    display: none !important;
  }

  body { background: #fff; color: #000; }

  section {
    opacity: 1;
    transform: none;
    padding: 1rem 0;
    page-break-inside: avoid;
  }

  .contact-card {
    background: #fff;
    border: 1px solid #ddd;
    box-shadow: none;
  }
}