:root {
  color-scheme: light;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  line-height: 1.5;
  font-weight: 400;
  --bg: #f4f8ff;
  --bg-accent: #dbeafe;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: rgba(15, 23, 42, 0.88);
  --panel: rgba(255, 255, 255, 0.9);
  --border: rgba(148, 163, 184, 0.24);
  --text: #0f172a;
  --muted: #475569;
  --accent: #2563eb;
  --accent-2: #06b6d4;
  --success: #0f766e;
  --shadow: 0 24px 70px rgba(15, 23, 42, 0.15);
  --radius-lg: 28px;
  --radius-md: 18px;
}

body[data-theme="dark"] {
  color-scheme: dark;
  --bg: #020617;
  --bg-accent: #0f172a;
  --surface: rgba(15, 23, 42, 0.74);
  --surface-strong: rgba(255, 255, 255, 0.9);
  --panel: rgba(15, 23, 42, 0.86);
  --border: rgba(148, 163, 184, 0.22);
  --text: #f8fafc;
  --muted: #cbd5e1;
  --accent: #60a5fa;
  --accent-2: #22d3ee;
  --success: #2dd4bf;
  --shadow: 0 24px 70px rgba(2, 6, 23, 0.55);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.28), transparent 24%),
    radial-gradient(circle at bottom right, rgba(6, 182, 212, 0.22), transparent 24%),
    linear-gradient(135deg, var(--bg), var(--bg-accent));
  transition: background 0.35s ease, color 0.35s ease;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(120deg, rgba(255,255,255,0.14), transparent 42%, rgba(255,255,255,0.12));
  mix-blend-mode: screen;
  opacity: 0.8;
}

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

a {
  color: inherit;
}

.page-shell {
  position: relative;
  min-height: 100vh;
  padding-bottom: 3rem;
}

.topbar {
  width: min(1160px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.25rem 1.25rem 1rem;
  position: sticky;
  top: 0.75rem;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.24);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

select,
button {
  font: inherit;
}

select,
.theme-toggle,
.menu-button {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 999px;
  padding: 0.7rem 0.9rem;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

select:focus,
.theme-toggle:focus,
.menu-button:focus {
  outline: 2px solid rgba(37, 99, 235, 0.25);
  outline-offset: 1px;
}

select:hover,
.theme-toggle:hover,
.menu-button:hover {
  transform: translateY(-1px);
  border-color: rgba(37, 99, 235, 0.45);
}

.navigation {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.navigation a {
  text-decoration: none;
  color: var(--muted);
  padding: 0.65rem 0.9rem;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.navigation a:hover,
.navigation a.active {
  background: rgba(37, 99, 235, 0.12);
  color: var(--accent);
  transform: translateY(-1px);
}

.menu-button {
  display: none;
}

main.page-shell,
main.page {
  width: min(1160px, calc(100% - 2rem));
  margin: 1.4rem auto 0;
}

.hero {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: 1.4rem;
  align-items: stretch;
}

.hero-copy,
.profile-card,
.info-card,
.contact-box,
.project,
.entry,
.language-card,
.timeline-card,
.skill-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.hero-copy {
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.hero-copy::after {
  content: "";
  position: absolute;
  inset: auto -2rem -2rem auto;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.18), transparent 70%);
  pointer-events: none;
}

.eyebrow,
.kicker,
.label {
  margin: 0 0 0.6rem;
  font-size: 0.7rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}

.hero h1,
.page h1,
.page-hero h1 {
  margin: 0 0 0.8rem;
  font-size: clamp(2rem, 4.2vw, 3.2rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.headline,
.summary,
.page .summary,
.entry p,
.project p,
.contact-box p,
.info-card p,
.info-card li {
  color: var(--muted);
  font-size: 1rem;
}

.hero-actions,
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.3rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.15rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.18);
}

.button.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white;
}

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

.profile-card {
  padding: 1.4rem;
  display: grid;
  gap: 1rem;
}

.avatar {
  width: min(100%, 240px);
  padding: 0.5rem;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.16), rgba(6, 182, 212, 0.2));
  margin: 0 auto;
}

.avatar img {
  width: 100%;
  border-radius: 50%;
  aspect-ratio: 1;
  object-fit: cover;
}

.profile-card dl {
  display: grid;
  gap: 0.8rem;
  margin: 0;
}

.profile-card dt {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.profile-card dd {
  margin: 0;
  color: var(--muted);
}

.cards-grid,
.project-list,
.timeline,
.skills-layout,
.contact-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.2rem;
}

.cards-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.info-card,
.project,
.entry,
.language-card,
.skill-panel,
.contact-box {
  padding: 1.25rem;
}

.info-card ul {
  padding-left: 1.1rem;
  margin: 0.7rem 0 0;
}

.page {
  padding: 1.8rem 0 0;
}

.timeline {
  grid-template-columns: 1fr;
}

.entry {
  display: grid;
  gap: 0.25rem;
}

.entry span,
.meta {
  font-size: 0.84rem;
  color: var(--success);
  font-weight: 600;
}

.language-card {
  margin-top: 1rem;
}

.footer {
  width: min(1160px, calc(100% - 2rem));
  margin: 1.4rem auto 0;
  padding: 1.2rem 0 2rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

@media (max-width: 900px) {
  .topbar {
    flex-wrap: wrap;
    border-radius: 24px;
  }

  .header-actions {
    margin-left: auto;
  }

  .menu-button {
    display: inline-flex;
  }

  .navigation {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding-top: 0.35rem;
  }

  .navigation.is-open {
    display: flex;
  }

  .hero,
  .cards-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    order: 2;
  }

  .profile-card {
    order: 1;
  }
}

@media (max-width: 640px) {
  .topbar,
  .page-shell main,
  .footer {
    width: min(100% - 1rem, 1160px);
  }

  .topbar {
    padding: 0.9rem 1rem;
  }

  .hero-copy,
  .profile-card,
  .info-card,
  .contact-box,
  .project,
  .entry,
  .language-card,
  .skill-panel {
    padding: 1rem;
    border-radius: 22px;
  }

  .hero-actions,
  .actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
  }
}