/* Цвета и общие настройки. Светлая тема включается через data-theme="light". */
:root {
  color-scheme: dark;
  --color-background: #0a0b10;
  --color-surface: #101219;
  --color-surface-hover: #171923;
  --color-text: #f5f6fa;
  --color-muted: #9b9fad;
  --color-faint: #828899;
  --color-border: #252833;
  --color-accent: #8055e9;
  --color-accent-text: #ad8cff;
  --color-accent-hover: #7043d6;
  --color-blue: #38bdf8;
  --color-header: rgba(10, 11, 16, 0.96);
  --color-button-text: #ffffff;
  --container-width: 1240px;
  --header-height: 88px;
}

[data-theme="light"] {
  color-scheme: light;
  --color-background: #f7f8fc;
  --color-surface: #ffffff;
  --color-surface-hover: #eef0f7;
  --color-text: #171923;
  --color-muted: #5d6373;
  --color-faint: #686e7d;
  --color-border: #d9dde8;
  --color-accent-text: #6c3dc9;
  --color-blue: #087eae;
  --color-header: rgba(247, 248, 252, 0.96);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
}

body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

button, a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

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

button:disabled {
  cursor: default;
}

button:not(:disabled) {
  cursor: pointer;
}

[hidden] {
  display: none !important;
}

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

h1, h2, h3, p {
  margin: 0;
}

h1, h2, h3 {
  line-height: 1.15;
}

::selection {
  background: var(--color-accent);
  color: #fff;
}

:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 6px;
  border-radius: 3px;
}

.container {
  width: min(var(--container-width), calc(100% - 96px));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 10;
  padding: 12px 20px;
  background: var(--color-text);
  color: var(--color-background);
  transform: translateY(-180%);
}

.skip-link:focus {
  transform: translateY(0);
}

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

.section {
  border-bottom: 1px solid var(--color-border);
}

.section-number, .eyebrow {
  color: var(--color-muted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-number {
  margin-bottom: 26px;
}

h2 {
  font-size: 42px;
  font-weight: 600;
  letter-spacing: -0.045em;
  line-height: 1.22;
}


.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--color-header);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.logo {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 29px;
  font-weight: 750;
  letter-spacing: -0.065em;
  line-height: 1;
}

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

.navigation {
  display: flex;
  align-items: center;
  gap: 32px;
}

.navigation a {
  display: flex;
  align-items: center;
  min-height: 44px;
  color: var(--color-muted);
  font-size: 13px;
  transition: color 180ms ease;
}

.navigation a:hover {
  color: var(--color-text);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 17px;
}

.language-switch {
  display: flex;
  align-items: center;
  gap: 3px;
  color: var(--color-faint);
  font-size: 12px;
}

.language-button {
  min-width: 44px;
  min-height: 44px;
  padding: 0;
  border: 0;
  background: none;
  color: var(--color-faint);
  font-size: 12px;
  font-weight: 600;
}

.language-button.is-current {
  color: var(--color-text);
}

.language-button:hover {
  color: var(--color-accent-text);
}

.control-divider {
  width: 1px;
  height: 20px;
  background: var(--color-border);
}

.theme-toggle {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: transparent;
}

.theme-toggle:hover, .menu-toggle:hover {
  border-color: var(--color-faint);
  background: var(--color-surface-hover);
}

.menu-toggle {
  width: 44px;
  height: 44px;
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-surface);
}

.menu-toggle span {
  display: block;
  height: 1px;
  margin: 5px 0;
  background: var(--color-text);
  transition: transform 160ms ease;
}

.menu-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(3px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-3px) rotate(-45deg);
}


.hero {
  padding: 66px 0 0;
}

.section-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-muted);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.small-line {
  width: 26px;
  height: 2px;
  background: var(--color-accent);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  align-items: center;
  gap: 42px;
  padding: 43px 0 65px;
}

h1 {
  font-size: clamp(44px, 5.2vw, 74px);
  font-weight: 650;
  letter-spacing: -0.055em;
  line-height: 1.12;
}

.hero-name, .hero-nickname {
  display: block;
}

.hero-nickname {
  margin-top: 4px;
  color: var(--color-accent-text);
}

.name-slash {
  color: var(--color-faint);
  font-weight: 350;
}

.hero-specialty {
  margin-top: 29px;
  font-size: 21px;
  font-weight: 500;
  letter-spacing: -0.025em;
}

.hero-specialty .specialty-connector {
  padding: 0 4px;
  color: var(--color-muted);
}

.hero-description {
  max-width: 490px;
  margin-top: 15px;
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 31px;
  min-height: 50px;
  padding: 12px 23px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button span[aria-hidden] {
  font-size: 18px;
  font-weight: 400;
}

.button-primary {
  background: var(--color-accent);
  color: var(--color-button-text);
}

.button-primary:hover {
  background: var(--color-accent-hover);
}

.button-secondary {
  border-color: var(--color-border);
}

.button-secondary:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-faint);
}

.hero-bottom {
  min-height: 70px;
  padding-block: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  border-top: 1px solid var(--color-border);
  color: var(--color-faint);
  font-size: 12px;
}

.hero-bottom a {
  display: inline-flex;
  align-items: center;
  gap: 22px;
  min-height: 44px;
  color: var(--color-muted);
}

.hero-bottom a:hover {
  color: var(--color-text);
}

.code-art {
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  overflow: hidden;
  transform: translateY(9px);
}

.art-top {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 42px;
  padding: 0 17px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-muted);
  font: 10px/1.5 Consolas, monospace;
}

.art-top > :last-child {
  margin-left: auto;
  color: var(--color-faint);
}

.art-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent-text);
}

.art-canvas {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 258px;
}

.art-axis {
  position: absolute;
  background: var(--color-border);
  opacity: 0.55;
}

.art-axis-horizontal {
  width: 100%;
  height: 1px;
  top: 43%;
}

.art-axis-vertical {
  width: 1px;
  height: 100%;
  left: 50%;
}

.code-symbol {
  z-index: 1;
  padding-bottom: 33px;
  color: var(--color-text);
  font: 600 87px/1 Consolas, monospace;
  letter-spacing: -0.14em;
}

.code-symbol span {
  color: var(--color-accent-text);
}

.art-corner {
  position: absolute;
  width: 14px;
  height: 14px;
}

.corner-top {
  top: 23px;
  left: 23px;
  border-top: 1px solid var(--color-faint);
  border-left: 1px solid var(--color-faint);
}

.corner-bottom {
  bottom: 25px;
  right: 23px;
  border-bottom: 1px solid var(--color-faint);
  border-right: 1px solid var(--color-faint);
}

.art-caption {
  position: absolute;
  bottom: 31px;
  background: var(--color-surface);
  color: var(--color-muted);
  font: 10px/1.5 Consolas, monospace;
}

.art-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 44px;
  padding: 0 18px;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font: 10px/1 Consolas, monospace;
  letter-spacing: 0.08em;
}

.art-plus {
  color: var(--color-blue);
  font-size: 15px;
}


.about, .skills, .contacts {
  padding: 100px 0;
}

.section-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 90px;
}

.muted-heading {
  color: var(--color-faint);
}

.about-content {
  padding-top: 2px;
}

.about-content > p {
  margin-bottom: 20px;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.9;
}

.about-content > .large-text {
  color: var(--color-text);
  font-size: 21px;
  line-height: 1.6;
  letter-spacing: -0.02em;
}

.inline-nickname {
  color: var(--color-accent-text);
}

.education-card {
  margin-top: 32px;
  padding: 25px 28px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
}

.education-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-bottom: 20px;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-muted);
  font-size: 12px;
}

.status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-blue);
}

.education-card h3 {
  font-size: 18px;
  font-weight: 550;
  letter-spacing: -0.025em;
}

.education-card > p {
  margin-top: 8px;
  color: var(--color-muted);
  font-size: 14px;
}

.education-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 19px;
  color: var(--color-faint);
  font-size: 12px;
}

.section-intro {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 30px;
  margin-bottom: 41px;
}

.section-intro > p {
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.8;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.skill-card {
  padding: 26px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  transition: border-color 180ms ease, transform 180ms ease;
}

.skill-card:hover {
  border-color: var(--color-faint);
  transform: translateY(-4px);
}

.skill-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 34px;
}

.technology-icon {
  display: grid;
  place-items: center;
  width: 43px;
  height: 43px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font: 600 18px/1 Consolas, monospace;
  letter-spacing: -0.06em;
}

.html-icon, .js-icon {
  color: var(--color-accent-text);
}

.css-icon, .python-icon {
  color: var(--color-blue);
}

.skill-index {
  padding-top: 4px;
  color: var(--color-faint);
  font: 12px/1.5 Consolas, monospace;
}

.skill-card h3 {
  margin-bottom: 11px;
  font-size: 22px;
  font-weight: 550;
  letter-spacing: -0.04em;
}

.skill-card p {
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.8;
}

.skill-category {
  display: block;
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  color: var(--color-faint);
  font-size: 12px;
}


.contact-description {
  margin-top: 25px;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.85;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 23px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  transition: background 180ms ease, border-color 180ms ease;
}

.contact-link:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-faint);
}

.contact-icon {
  display: grid;
  place-items: center;
  flex: 0 0 44px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.contact-label {
  margin-bottom: 2px;
  color: var(--color-muted);
  font-size: 12px;
}

.contact-value {
  font-size: 16px;
  letter-spacing: -0.015em;
  overflow-wrap: anywhere;
}

.contact-arrow {
  margin-left: auto;
  color: var(--color-faint);
  font-size: 22px;
}

.contact-link:hover .contact-arrow {
  color: var(--color-accent-text);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 100px;
}

.site-footer .logo {
  font-size: 24px;
}

.site-footer p {
  color: var(--color-faint);
  font-size: 12px;
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  min-height: 44px;
  color: var(--color-muted);
  font-size: 12px;
}

.back-to-top:hover {
  color: var(--color-text);
}

.theme-ready body, .theme-ready .site-header, .theme-ready .code-art,
.theme-ready .education-card, .theme-ready .skill-card, .theme-ready .contact-link,
.theme-ready .button, .theme-ready .theme-toggle, .theme-ready .menu-toggle {
  transition: background-color 160ms ease, color 160ms ease,
    border-color 160ms ease, transform 180ms ease;
}