* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #02030a;
  --bg-soft: #080b18;
  --bg-panel: rgba(9, 14, 30, 0.62);
  --bg-panel-strong: rgba(12, 18, 38, 0.78);
  --text: #ecf3ff;
  --text-soft: #9db3d4;
  --border: rgba(121, 149, 220, 0.28);
  --primary: #35b7ff;
  --primary-hover: #7a6fff;
  --cyan: #4ffcff;
  --violet: #8a6bff;
  --radius: 16px;
  --shadow-lg: 0 22px 50px rgba(4, 8, 22, 0.58);
  --shadow-glow: 0 0 24px rgba(79, 252, 255, 0.18);
  --nav-bg: rgba(3, 7, 20, 0.72);
}

[data-theme="light"] {
  --bg: #f5f8ff;
  --bg-soft: #edf3ff;
  --bg-panel: rgba(255, 255, 255, 0.78);
  --bg-panel-strong: rgba(255, 255, 255, 0.9);
  --text: #0f172a;
  --text-soft: #52607a;
  --border: rgba(100, 116, 139, 0.16);
  --primary: #35b7ff;
  --primary-hover: #7a6fff;
  --cyan: #4ffcff;
  --violet: #8a6bff;
  --nav-bg: rgba(245, 248, 255, 0.8);
  --shadow-lg: 0 22px 50px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 0 24px rgba(79, 252, 255, 0.12);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Sora", "Space Grotesk", "Segoe UI", sans-serif;
  line-height: 1.65;
  color: var(--text);
  background:
    radial-gradient(circle at 8% -12%, rgba(53, 183, 255, 0.28), transparent 40%),
    radial-gradient(circle at 92% -8%, rgba(138, 107, 255, 0.2), transparent 42%),
    radial-gradient(circle at 50% 120%, rgba(79, 252, 255, 0.12), transparent 54%),
    linear-gradient(180deg, var(--bg-soft), var(--bg));
  min-height: 100vh;
}

[data-theme="light"] body {
  background:
    radial-gradient(circle at 10% 8%, rgba(53, 183, 255, 0.18), transparent 34%),
    radial-gradient(circle at 88% 12%, rgba(138, 107, 255, 0.14), transparent 32%),
    radial-gradient(circle at 72% 86%, rgba(79, 252, 255, 0.12), transparent 34%),
    linear-gradient(180deg, #fafcff 0%, #eef4ff 100%);
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

.cyber-loader {
  position: fixed;
  inset: 0;
  z-index: 3000;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.cyber-loader__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(53, 183, 255, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(138, 107, 255, 0.14) 1px, transparent 1px);
  background-size: 42px 42px;
  animation: cyberGridPulse 1.8s ease-in-out infinite;
}

.cyber-loader__content {
  position: relative;
  text-align: center;
  padding: 24px;
  max-width: 560px;
}

.cyber-loader__label {
  color: var(--primary);
  letter-spacing: 0.33em;
  font-size: 12px;
  margin-bottom: 10px;
  animation: cyberBlink 0.9s steps(2, end) infinite;
}

.cyber-loader__title {
  font-family: "Orbitron", "Space Grotesk", sans-serif;
  color: #f7fbff;
  font-size: clamp(20px, 4vw, 32px);
  margin-bottom: 18px;
  text-transform: uppercase;
  text-shadow: 0 0 14px rgba(53, 183, 255, 0.52);
}

.glitch {
  position: relative;
  display: inline-block;
}

.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  pointer-events: none;
  clip-path: inset(0 0 0 0);
}

.glitch::before {
  color: rgba(53, 183, 255, 0.9);
  transform: translate(1px, 0);
  animation: glitchShiftA 0.62s steps(2, end) infinite;
}

.glitch::after {
  color: rgba(138, 107, 255, 0.85);
  transform: translate(-1px, 0);
  animation: glitchShiftB 0.82s steps(2, end) infinite;
}

.cyber-loader__bar {
  width: min(420px, 80vw);
  height: 10px;
  border: 1px solid rgba(53, 183, 255, 0.5);
  border-radius: 999px;
  overflow: hidden;
  margin: 0 auto;
  background: rgba(53, 183, 255, 0.09);
}

.cyber-loader__bar span {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, rgba(53, 183, 255, 0.2), rgba(79, 252, 255, 0.95));
  transform-origin: left center;
  animation: cyberLoad 1.8s ease-out forwards;
}

@keyframes cyberLoad {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

@keyframes cyberBlink {
  0%,
  49% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0.45;
  }
}

@keyframes cyberGridPulse {
  0%,
  100% {
    opacity: 0.72;
  }
  50% {
    opacity: 1;
  }
}

@keyframes glitchShiftA {
  0% {
    clip-path: inset(8% 0 68% 0);
    transform: translate(1px, -1px);
  }
  25% {
    clip-path: inset(46% 0 24% 0);
    transform: translate(-1px, 1px);
  }
  50% {
    clip-path: inset(22% 0 48% 0);
    transform: translate(2px, 0);
  }
  75% {
    clip-path: inset(64% 0 10% 0);
    transform: translate(-2px, 0);
  }
  100% {
    clip-path: inset(5% 0 74% 0);
    transform: translate(1px, -1px);
  }
}

@keyframes glitchShiftB {
  0% {
    clip-path: inset(66% 0 12% 0);
    transform: translate(-1px, 1px);
  }
  25% {
    clip-path: inset(24% 0 44% 0);
    transform: translate(1px, -1px);
  }
  50% {
    clip-path: inset(54% 0 22% 0);
    transform: translate(-2px, 0);
  }
  75% {
    clip-path: inset(15% 0 62% 0);
    transform: translate(2px, 1px);
  }
  100% {
    clip-path: inset(70% 0 8% 0);
    transform: translate(-1px, 1px);
  }
}

#navbar {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.nav-container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 24px;
  height: 70px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  border: 0;
  background: transparent;
  color: var(--text);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
}

.nav-brand:hover {
  color: var(--cyan);
}

.nav-menu {
  display: flex;
  gap: 12px;
  align-items: center;
}

.nav-link {
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-soft);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 180ms ease, color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
  border-color: rgba(79, 252, 255, 0.36);
  background: rgba(79, 252, 255, 0.08);
  box-shadow: var(--shadow-glow);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(10, 17, 35, 0.8);
  color: var(--text);
  cursor: pointer;
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.theme-toggle:hover {
  border-color: rgba(79, 252, 255, 0.5);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.theme-toggle .sun-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
  display: block;
}

[data-theme="dark"] .theme-toggle .moon-icon {
  display: none;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.hamburger,
.hamburger::before,
.hamburger::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  position: relative;
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  left: 0;
}

.hamburger::before {
  top: -8px;
}

.hamburger::after {
  top: 8px;
}

.hero-section {
  min-height: 100vh;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 64px;
}

.hero-bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(0.5px);
  pointer-events: none;
}

.hero-bg-orb--one {
  width: min(52vw, 540px);
  height: min(52vw, 540px);
  top: 8%;
  left: -8%;
  background: radial-gradient(circle, rgba(53, 183, 255, 0.3), rgba(53, 183, 255, 0));
  animation: driftOrbA 18s ease-in-out infinite;
}

.hero-bg-orb--two {
  width: min(50vw, 500px);
  height: min(50vw, 500px);
  right: -9%;
  bottom: -8%;
  background: radial-gradient(circle, rgba(138, 107, 255, 0.28), rgba(138, 107, 255, 0));
  animation: driftOrbB 20s ease-in-out infinite;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(79, 252, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 252, 255, 0.08) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.65), rgba(0, 0, 0, 0.1));
  opacity: 0.24;
  pointer-events: none;
}

.hero-shell {
  position: relative;
  z-index: 1;
  width: min(920px, 100%);
  padding: clamp(28px, 4vw, 56px);
  border-radius: 28px;
  border: 1px solid rgba(121, 149, 220, 0.38);
  background:
    linear-gradient(140deg, rgba(10, 17, 34, 0.82), rgba(8, 14, 29, 0.62));
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg), inset 0 0 0 1px rgba(79, 252, 255, 0.08);
  text-align: center;
  animation: heroReveal 780ms ease-out;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--cyan);
  border: 1px solid rgba(79, 252, 255, 0.34);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.hero-title {
  font-family: "Space Grotesk", "Sora", sans-serif;
  font-size: clamp(44px, 8.4vw, 92px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
  background: linear-gradient(130deg, #eaf4ff 0%, #8ec8ff 45%, #88adff 68%, #9aefff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-wrap: balance;
}

.hero-description {
  max-width: 760px;
  margin: 0 auto 30px;
  color: var(--text-soft);
  font-size: clamp(16px, 2.1vw, 21px);
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid transparent;
  border-radius: 11px;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.btn-primary {
  color: #021018;
  background: linear-gradient(120deg, #4ffcff, #35b7ff 50%, #8a6bff);
  box-shadow: 0 8px 24px rgba(53, 183, 255, 0.32);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(53, 183, 255, 0.42);
}

.btn-outline {
  color: var(--text);
  border-color: rgba(121, 149, 220, 0.42);
  background: rgba(10, 18, 38, 0.52);
}

.btn-outline:hover {
  border-color: rgba(79, 252, 255, 0.42);
  background: rgba(79, 252, 255, 0.1);
  box-shadow: var(--shadow-glow);
}

.social-sidebar {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 1050;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.social-circle {
  width: 46px;
  height: 46px;
  border-radius: 999px;
  border: 1px solid rgba(121, 149, 220, 0.36);
  background: rgba(10, 17, 35, 0.72);
  color: var(--text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  transition: transform 160ms ease, box-shadow 180ms ease, border-color 180ms ease, color 180ms ease;
}

.social-circle:hover {
  transform: translateY(-2px);
  color: var(--cyan);
  border-color: rgba(79, 252, 255, 0.5);
  box-shadow: var(--shadow-glow);
}

.about-section,
.projects-section,
.achievements-section,
.articles-section,
.contact-section {
  position: relative;
  overflow: hidden;
  padding: 92px 24px;
}

.about-section::before,
.projects-section::before,
.achievements-section::before,
.articles-section::before,
.contact-section::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 16% 18%, rgba(53, 183, 255, 0.1), transparent 38%),
    radial-gradient(circle at 84% 76%, rgba(138, 107, 255, 0.09), transparent 36%);
}

.about-section > .container,
.projects-section > .container,
.achievements-section > .container,
.articles-section > .container,
.contact-section > .container {
  position: relative;
  z-index: 1;
}

.section-title {
  font-family: "Space Grotesk", "Sora", sans-serif;
  text-align: center;
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin-bottom: 14px;
  color: #eaf4ff;
}

.section-description {
  max-width: 760px;
  margin: 0 auto 44px;
  text-align: center;
  color: var(--text-soft);
  font-size: clamp(15px, 2vw, 18px);
}

.about-grid,
.projects-grid,
.achievements-grid,
.articles-grid {
  display: grid;
  gap: 22px;
}

.about-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  margin-bottom: 36px;
}

.projects-grid,
.articles-grid {
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
}

.achievements-grid {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.card,
.project-card,
.article-card,
.achievement-card,
.cv-card {
  background: linear-gradient(150deg, var(--bg-panel-strong), var(--bg-panel));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: inset 0 0 0 1px rgba(79, 252, 255, 0.03);
}

.card,
.project-card,
.article-card,
.achievement-card {
  padding: 22px;
  transition: transform 170ms ease, border-color 170ms ease, box-shadow 170ms ease;
}

.card:hover,
.project-card:hover,
.article-card:hover,
.achievement-card:hover {
  transform: translateY(-3px);
  border-color: rgba(79, 252, 255, 0.4);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.card-title,
.project-title,
.article-title,
.achievement-title,
.cv-title {
  color: #e8f3ff;
  line-height: 1.25;
}

.card-title,
.project-title,
.article-title,
.achievement-title {
  font-size: 20px;
  margin-bottom: 8px;
}

.card-title {
  text-align: center;
}

.card-text,
.project-description,
.article-description,
.achievement-text,
.cv-text,
.card-description,
.opportunity-text,
.connect-text,
.form-status,
.footer {
  color: var(--text-soft);
}

.card-text {
  text-align: center;
  font-size: 14px;
}

.text-small {
  font-size: 12px;
}

.cv-card {
  padding: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.cv-title {
  font-size: 24px;
  margin-bottom: 6px;
}

.project-header {
  margin-bottom: 14px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(79, 252, 255, 0.1);
  border: 1px solid rgba(79, 252, 255, 0.24);
  color: #bdeeff;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.project-stats {
  display: flex;
  gap: 14px;
  margin-bottom: 16px;
  color: var(--text-soft);
  font-size: 14px;
}

.stat {
  display: inline-flex;
  gap: 6px;
  align-items: center;
}

.project-footer {
  margin-top: auto;
  display: flex;
  gap: 8px;
}

.project-footer .btn {
  flex: 1;
}

.article-card {
  cursor: pointer;
}

.article-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.article-meta {
  display: flex;
  gap: 10px;
  color: var(--text-soft);
  font-size: 12px;
}

.meta-item {
  display: inline-flex;
  align-items: center;
}

.article-title-link {
  text-decoration: none;
  color: inherit;
}

.article-title {
  transition: color 160ms ease;
}

.article-title-link:hover .article-title,
.article-card:hover .article-title {
  color: var(--cyan);
}

.achievement-meta {
  display: inline-flex;
  margin-bottom: 10px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(79, 252, 255, 0.25);
  color: #bdeeff;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.contact-container {
  margin-top: 28px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #d8e9ff;
}

.form-group input,
.form-group textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(7, 12, 25, 0.7);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  padding: 11px 12px;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: rgba(79, 252, 255, 0.48);
  box-shadow: 0 0 0 3px rgba(79, 252, 255, 0.15);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

#submit-btn {
  width: 100%;
  margin-top: 8px;
}

.form-status {
  margin-top: 14px;
  text-align: center;
  font-size: 14px;
}

.card-header {
  margin-bottom: 12px;
}

.card-description,
.connect-text,
.opportunity-text {
  font-size: 14px;
}

.connect-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.connect-link {
  padding: 12px;
  border-radius: 10px;
  text-decoration: none;
  color: inherit;
  border: 1px solid transparent;
  transition: border-color 160ms ease, background 160ms ease;
}

.connect-link:hover {
  border-color: rgba(79, 252, 255, 0.35);
  background: rgba(79, 252, 255, 0.08);
}

.connect-title {
  color: #e5f1ff;
  font-weight: 700;
}

.opportunity-text {
  text-align: center;
  padding: 14px;
}

.footer {
  margin-top: 58px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 13px;
}

.text-center {
  text-align: center;
}

@keyframes driftOrbA {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(30px, 18px, 0) scale(1.07);
  }
}

@keyframes driftOrbB {
  0%,
  100% {
    transform: translate3d(0, 0, 0) scale(1);
  }
  50% {
    transform: translate3d(-26px, -20px, 0) scale(1.09);
  }
}

@keyframes heroReveal {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (max-width: 992px) {
  .contact-container {
    grid-template-columns: 1fr;
  }

  .social-sidebar {
    right: 12px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 18px;
  }

  .hero-section {
    padding: 108px 18px 56px;
  }

  .hero-shell {
    border-radius: 20px;
  }

  .social-sidebar {
    top: auto;
    bottom: 14px;
    left: 50%;
    transform: translateX(-50%);
    right: auto;
    flex-direction: row;
    background: rgba(8, 14, 30, 0.52);
    border: 1px solid rgba(121, 149, 220, 0.28);
    border-radius: 999px;
    padding: 6px;
    backdrop-filter: blur(8px);
  }

  .social-circle {
    width: 40px;
    height: 40px;
  }

  .nav-menu {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 70px;
    padding: 14px 18px;
    background: rgba(4, 9, 22, 0.95);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-link {
    width: 100%;
    text-align: left;
  }

  .mobile-menu-btn {
    display: block;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .cv-card {
    text-align: center;
    justify-content: center;
  }
}

[data-theme="light"] #navbar {
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}

[data-theme="light"] .nav-brand {
  color: #0f172a;
}

[data-theme="light"] .nav-link {
  color: #52607a;
}

[data-theme="light"] .nav-link:hover,
[data-theme="light"] .nav-link.active {
  color: #0f172a;
  background: rgba(53, 183, 255, 0.08);
}

[data-theme="light"] .theme-toggle {
  background: rgba(255, 255, 255, 0.88);
  color: #0f172a;
}

[data-theme="light"] .social-circle {
  background: rgba(255, 255, 255, 0.88);
  border-color: rgba(100, 116, 139, 0.16);
  color: #0f172a;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
}

[data-theme="light"] .hero-shell {
  background: linear-gradient(140deg, rgba(255, 255, 255, 0.92), rgba(245, 249, 255, 0.82));
  border-color: rgba(148, 163, 184, 0.18);
  box-shadow: 0 20px 46px rgba(15, 23, 42, 0.08), 0 0 22px rgba(53, 183, 255, 0.08);
}

[data-theme="light"] .hero-kicker {
  color: #0284c7;
  border-color: rgba(53, 183, 255, 0.22);
  background: rgba(53, 183, 255, 0.08);
}

[data-theme="light"] .hero-description,
[data-theme="light"] .card-text,
[data-theme="light"] .project-description,
[data-theme="light"] .article-description,
[data-theme="light"] .achievement-text,
[data-theme="light"] .cv-text,
[data-theme="light"] .card-description,
[data-theme="light"] .opportunity-text,
[data-theme="light"] .connect-text,
[data-theme="light"] .form-status,
[data-theme="light"] .footer {
  color: #52607a;
}

[data-theme="light"] .about-section,
[data-theme="light"] .projects-section,
[data-theme="light"] .achievements-section,
[data-theme="light"] .articles-section,
[data-theme="light"] .contact-section {
  background:
    radial-gradient(circle at 16% 18%, rgba(53, 183, 255, 0.08), transparent 38%),
    radial-gradient(circle at 84% 76%, rgba(138, 107, 255, 0.06), transparent 36%),
    linear-gradient(180deg, #f8fbff 0%, #eef4ff 100%);
}

[data-theme="light"] .section-title,
[data-theme="light"] .card-title,
[data-theme="light"] .project-title,
[data-theme="light"] .article-title,
[data-theme="light"] .achievement-title,
[data-theme="light"] .cv-title,
[data-theme="light"] .connect-title,
[data-theme="light"] .form-group label {
  color: #0f172a;
}

[data-theme="light"] .section-description {
  color: #51607a;
}

[data-theme="light"] .card,
[data-theme="light"] .project-card,
[data-theme="light"] .article-card,
[data-theme="light"] .achievement-card,
[data-theme="light"] .cv-card {
  border-color: rgba(148, 163, 184, 0.18);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.7), 0 18px 36px rgba(15, 23, 42, 0.06);
}

[data-theme="light"] .card:hover,
[data-theme="light"] .project-card:hover,
[data-theme="light"] .article-card:hover,
[data-theme="light"] .achievement-card:hover {
  border-color: rgba(53, 183, 255, 0.28);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.1), 0 0 20px rgba(53, 183, 255, 0.08);
}

[data-theme="light"] .badge,
[data-theme="light"] .achievement-meta {
  background: rgba(53, 183, 255, 0.08);
  border-color: rgba(53, 183, 255, 0.18);
  color: #0f749e;
}

[data-theme="light"] .form-group input,
[data-theme="light"] .form-group textarea {
  background: rgba(255, 255, 255, 0.92);
  color: #0f172a;
  border-color: rgba(148, 163, 184, 0.18);
}

[data-theme="light"] .btn-outline {
  color: #0f172a;
  border-color: rgba(100, 116, 139, 0.2);
  background: rgba(255, 255, 255, 0.82);
}

[data-theme="light"] .connect-link {
  color: #0f172a;
}

[data-theme="light"] .connect-link:hover {
  background: rgba(53, 183, 255, 0.06);
}

[data-theme="light"] .footer {
  border-top-color: rgba(100, 116, 139, 0.16);
}

[data-theme="light"] .nav-menu.active {
  background: rgba(245, 248, 255, 0.96);
}

[data-theme="light"] .mobile-menu-btn .hamburger,
[data-theme="light"] .mobile-menu-btn .hamburger::before,
[data-theme="light"] .mobile-menu-btn .hamburger::after {
  background: #0f172a;
}