:root {
  color-scheme: light dark;
  --radius: 24px;
  --radius-sm: 18px;
  --max-width: 1200px;
  --section-space: 6rem;
  --nav-height: 80px;
}

:root[data-theme="light"] {
  --bg: #f4f7fb;
  --bg-soft: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --muted-strong: #334155;
  --border: rgba(15, 23, 42, 0.1);
  --border-strong: rgba(15, 23, 42, 0.18);
  --accent: #2563eb;
  --accent-2: #7c3aed;
  --accent-soft: rgba(37, 99, 235, 0.1);
  --shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
  --nav-bg: rgba(255, 255, 255, 0.86);
  --nav-mobile-bg: rgba(255, 255, 255, 0.96);
  --toggle-bg: rgba(255, 255, 255, 0.95);
  --project-overlay-line: rgba(15, 23, 42, 0.05);
  --link-underline: rgba(15, 23, 42, 0.26);
}

:root[data-theme="dark"] {
  --bg: #0b1020;
  --bg-soft: #11182d;
  --text: #f5f7fa;
  --muted: #9ca3af;
  --muted-strong: #cbd5e1;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --accent: #4f8cff;
  --accent-2: #7c3aed;
  --accent-soft: rgba(79, 140, 255, 0.14);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --nav-bg: rgba(11, 16, 32, 0.74);
  --nav-mobile-bg: rgba(11, 16, 32, 0.95);
  --toggle-bg: rgba(255, 255, 255, 0.04);
  --project-overlay-line: rgba(255, 255, 255, 0.03);
  --link-underline: rgba(255, 255, 255, 0.35);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(79, 140, 255, 0.08), transparent 30%),
    radial-gradient(circle at top right, rgba(124, 58, 237, 0.08), transparent 30%),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  transition: background 0.3s ease, color 0.3s ease;
}

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

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

button,
input,
textarea,
select {
  font: inherit;
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.section {
  padding: var(--section-space) 0;
  position: relative;
}

.glass {
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--project-overlay-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--project-overlay-line) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at center, black 30%, transparent 85%);
  pointer-events: none;
  z-index: -3;
}

.bg-orb {
  position: fixed;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.2;
  pointer-events: none;
  z-index: -2;
}

.orb-1 {
  top: -100px;
  left: -100px;
  background: #4f8cff;
}

.orb-2 {
  right: -120px;
  top: 160px;
  background: #7c3aed;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.site-header.scrolled {
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.navbar {
  min-height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  margin-left: auto;
  margin-right: 0.75rem;
}

.nav-links a {
  color: var(--muted-strong);
  transition: color 0.25s ease, transform 0.25s ease, opacity 0.25s ease;
  font-size: 0.96rem;
  position: relative;
}

.nav-links a:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.nav-links a.active {
  color: var(--text);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: var(--accent);
}

.nav-cta {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text) !important;
  background: var(--bg-soft);
}

.theme-toggle {
  width: 46px;
  height: 46px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--toggle-bg);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition:
    transform 0.25s ease,
    background 0.25s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease;
  flex-shrink: 0;
}

.theme-toggle:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.12);
}

.theme-toggle:focus-visible,
.btn:focus-visible,
.nav-links a:focus-visible,
.project-links a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.theme-toggle-icon {
  width: 20px;
  height: 20px;
  color: currentColor;
}

.theme-toggle-icon svg {
  width: 100%;
  height: 100%;
  stroke: currentColor;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: 0.3s ease;
  border-radius: 999px;
}

.hero {
  min-height: calc(100vh - var(--nav-height));
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 2rem;
  padding: 5rem 0 3rem;
}

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.profile-card {
  width: 100%;
  max-width: 460px;
  overflow: hidden;
  padding: 0;
}

.profile-image-wrap {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(135deg, rgba(79, 140, 255, 0.25), rgba(124, 58, 237, 0.15)),
    var(--bg-soft);
  position: relative;
}

.profile-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.02) contrast(1.02);
}

.profile-card-content {
  padding: 2rem;
}

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

.hero h1 {
  font-size: clamp(2.6rem, 5vw, 5rem);
  line-height: 1.02;
  max-width: 11ch;
  margin-bottom: 1.5rem;
}

.hero-text,
.section-heading p,
.project-content p,
.about-copy p,
.stack-card p,
.contact-card p,
.mini-stats small,
.highlight p,
.image-fallback span,
.github-visual-text span {
  color: var(--muted);
}

.hero-text {
  max-width: 62ch;
  margin-bottom: 2rem;
  font-size: 1.02rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.95rem 1.3rem;
  border-radius: 999px;
  font-weight: 600;
  transition:
    transform 0.25s ease,
    background 0.25s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease,
    color 0.25s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #6ea2ff);
  color: white;
  box-shadow: 0 10px 30px rgba(79, 140, 255, 0.28);
}

.btn-secondary {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-secondary:hover {
  border-color: var(--border-strong);
}

.card-label,
.project-tag {
  color: var(--accent);
  font-size: 0.84rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.profile-card-content h2 {
  margin-bottom: 1rem;
  font-size: 1.7rem;
  line-height: 1.15;
  max-width: 15ch;
}

.mini-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.mini-stats div {
  padding: 1rem;
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
  border: 1px solid var(--border);
}

.mini-stats span {
  display: block;
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
  line-height: 1.2;
}

.section-heading {
  margin-bottom: 2.5rem;
  max-width: 760px;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
  margin-bottom: 0.75rem;
}

.projects {
  display: grid;
  gap: 2rem;
}

.project-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

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

.project-image-wrap {
  min-height: 320px;
  background:
    linear-gradient(135deg, rgba(79, 140, 255, 0.12), rgba(124, 58, 237, 0.08)),
    var(--bg-soft);
  position: relative;
  overflow: hidden;
  border-right: 1px solid var(--border);
}

.project-image-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(var(--project-overlay-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--project-overlay-line) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.18;
  pointer-events: none;
}

.project-shot {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
}

.github-visual {
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 20% 20%, rgba(79, 140, 255, 0.26), transparent 35%),
    radial-gradient(circle at 80% 80%, rgba(124, 58, 237, 0.22), transparent 30%),
    linear-gradient(135deg, rgba(79, 140, 255, 0.18), rgba(124, 58, 237, 0.12)),
    var(--bg-soft);
}

.github-mark {
  width: 84px;
  height: 84px;
  color: var(--text);
  opacity: 0.92;
  margin-bottom: 1rem;
}

.github-visual-text {
  text-align: center;
  padding: 1rem;
}

.github-visual-text strong {
  display: block;
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.project-content {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.project-content h3 {
  font-size: 1.75rem;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.tech-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.5rem 0;
}

.tech-list li {
  padding: 0.5rem 0.8rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.9rem;
  border: 1px solid rgba(79, 140, 255, 0.18);
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.25rem;
}

.project-links a {
  color: var(--text);
  font-weight: 600;
  position: relative;
}

.project-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 100%;
  height: 1px;
  background: var(--link-underline);
  transform: scaleX(0.5);
  transform-origin: left;
  transition: transform 0.25s ease, background 0.25s ease;
}

.project-links a:hover::after {
  transform: scaleX(1);
  background: var(--accent);
}

.about-grid,
.stack-grid {
  display: grid;
  gap: 1.5rem;
}

.about-grid {
  grid-template-columns: 1.15fr 0.85fr;
}

.about-copy,
.about-highlights,
.stack-card,
.contact-card {
  padding: 2rem;
}

.about-copy p + p {
  margin-top: 1rem;
}

.about-highlights {
  display: grid;
  gap: 1rem;
}

.highlight {
  padding: 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-soft);
}

.highlight h3 {
  margin-bottom: 0.45rem;
  font-size: 1rem;
}

.stack-grid {
  grid-template-columns: repeat(3, 1fr);
}

.stack-card {
  min-height: 210px;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.stack-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
}

.stack-card h3 {
  margin-bottom: 0.75rem;
  line-height: 1.2;
  font-size: 1.1rem;
}

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

.contact-card h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.06;
  margin-bottom: 1rem;
}

.contact-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.site-footer {
  padding: 2rem 0 4rem;
  color: var(--muted);
  text-align: center;
  font-size: 0.95rem;
}

.image-fallback {
  position: absolute;
  inset: 0;
  display: none;
  place-items: center;
  text-align: center;
  padding: 1.5rem;
  background:
    linear-gradient(135deg, rgba(79, 140, 255, 0.16), rgba(124, 58, 237, 0.08)),
    var(--bg-soft);
}

.image-fallback-content {
  display: grid;
  gap: 0.5rem;
}

.image-fallback strong {
  font-size: 1rem;
  color: var(--text);
}

.image-fallback span {
  font-size: 0.95rem;
}

.project-image-wrap.has-fallback .image-fallback,
.profile-image-wrap.has-fallback .image-fallback {
  display: grid;
}

.project-image-wrap.has-fallback img,
.profile-image-wrap.has-fallback img {
  opacity: 0;
}

.reveal {
  opacity: 1;
  transform: translateY(0);
}

.js-enabled .reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

@media (max-width: 1100px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 4rem;
  }

  .hero h1 {
    max-width: 100%;
  }

  .profile-card {
    max-width: 100%;
  }

  .about-grid,
  .project-card,
  .stack-grid {
    grid-template-columns: 1fr;
  }

  .project-image-wrap {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
}

@media (max-width: 760px) {
  :root {
    --section-space: 4.5rem;
  }

  .nav-toggle {
    display: block;
    z-index: 1100;
  }

  .theme-toggle {
    order: 2;
  }

  .nav-links {
    position: absolute;
    top: calc(var(--nav-height) - 4px);
    right: 1rem;
    left: 1rem;
    padding: 1rem;
    border-radius: 20px;
    background: var(--nav-mobile-bg);
    border: 1px solid var(--border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: flex-start;
    display: none;
    margin: 0;
  }

  .nav-links.open {
    display: flex;
  }

  .hero {
    padding-top: 3rem;
    gap: 1.5rem;
  }

  .hero h1 {
    font-size: clamp(2.2rem, 10vw, 3.5rem);
  }

  .project-content,
  .profile-card-content,
  .about-copy,
  .about-highlights,
  .stack-card,
  .contact-card {
    padding: 1.5rem;
  }

  .project-image-wrap,
  .project-shot {
    min-height: 220px;
  }

  .mini-stats {
    grid-template-columns: 1fr;
  }

  .contact-links,
  .hero-actions {
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .container {
    width: min(100% - 1.2rem, var(--max-width));
  }

  .section-heading h2 {
    font-size: 1.9rem;
  }

  .project-content h3,
  .profile-card-content h2 {
    font-size: 1.45rem;
  }

  .site-footer {
    font-size: 0.9rem;
  }
}