:root {
  color-scheme: dark;
  --bg: #0a0a0a;
  --bg-alt: #0f0f0f;
  --panel: #141414;
  --panel-strong: #171717;
  --text: #f1f1f1;
  --muted: #a2a2a2;
  --line: rgba(255, 255, 255, 0.14);
  --line-strong: rgba(255, 255, 255, 0.28);
  --accent: #ffffff;
  --accent-strong: #dddddd;
  --shadow: 0 16px 36px rgba(0, 0, 0, 0.42);
}

body.light {
  color-scheme: light;
  --bg: #ececec;
  --bg-alt: #e6e6e6;
  --panel: #f6f6f6;
  --panel-strong: #fcfcfc;
  --text: #111111;
  --muted: #575757;
  --line: rgba(0, 0, 0, 0.14);
  --line-strong: rgba(0, 0, 0, 0.3);
  --accent: #111111;
  --accent-strong: #2a2a2a;
  --shadow: 0 14px 28px rgba(0, 0, 0, 0.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  font-family: "Manrope", "Segoe UI", sans-serif;
  background: linear-gradient(180deg, var(--bg), var(--bg-alt));
  color: var(--text);
  transition: background-color 0.35s ease, color 0.35s ease;
}

.page {
  position: relative;
  z-index: 1;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.page.fade-out {
  opacity: 0;
}

.site-shell {
  width: min(1080px, calc(100vw - 2.2rem));
  margin: 1.1rem auto 2rem;
  padding: 1.25rem 1.25rem 1.5rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(180deg, var(--panel-strong), var(--panel));
  box-shadow: var(--shadow);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}

.brand {
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 40px;
  padding: 0.6rem 0.95rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
  text-decoration: none;
  font-size: 0.78rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.btn,
.theme-toggle,
.project-link,
.social-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 40px;
  padding: 0.56rem 0.9rem;
  border-radius: 10px;
  border: 1px solid var(--text);
  background: linear-gradient(180deg, var(--text), var(--accent-strong));
  color: var(--bg);
  text-decoration: none;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav a:hover {
  transform: translateY(-1px);
  border-color: var(--line-strong);
}

.btn:hover,
.project-link:hover,
.social-btn:hover,
.theme-toggle:hover {
  transform: translateY(-1px);
  opacity: 0.92;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(260px, 320px) 1fr;
  gap: 2rem;
  align-items: center;
}

.hero-photo {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.15);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.3);
}

.hero-photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 5;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4.1vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.lead {
  max-width: 62ch;
  margin-top: 1rem;
  font-size: 1.04rem;
  line-height: 1.72;
  color: var(--muted);
}

.actions {
  margin-top: 1.35rem;
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.btn.primary {
  border-color: var(--text);
}

.section-head {
  margin: 0 0 1rem;
  font-size: clamp(1.7rem, 2.8vw, 2.2rem);
}

.section-note {
  margin: 0 0 1.3rem;
  max-width: 66ch;
  line-height: 1.7;
  color: var(--muted);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.projects-grid.single-column {
  grid-template-columns: 1fr;
}

.project-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.02);
}

.project-card img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.collaboration-card .collab-image {
  width: min(100%, 980px);
  height: auto;
  margin: 1rem auto 0;
  aspect-ratio: auto;
  object-fit: contain;
  object-position: center;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #101010;
}

.project-content {
  padding: 1rem 1rem 1.1rem;
}

.project-meta {
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.24rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.pill.warn {
  border-color: var(--line);
  color: var(--muted);
}

.project-card h3 {
  margin: 0;
  font-size: 1.12rem;
}

.project-card p {
  margin: 0.6rem 0 0;
  color: var(--muted);
  line-height: 1.62;
}

.project-card .project-context {
  margin-top: 0.7rem;
}

.feature-list {
  margin: 0.8rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.42rem;
  color: var(--muted);
  line-height: 1.58;
}

.project-card .project-link {
  margin-top: 0.85rem;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.panel {
  padding: 1.1rem;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.panel h2 {
  margin: 0;
  font-size: 1.2rem;
}

.panel p {
  margin: 0.65rem 0 0;
  color: var(--muted);
  line-height: 1.62;
}

.social-row {
  margin-top: 0.95rem;
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.social-btn {
  gap: 0.5rem;
}

.social-btn img {
  width: 16px;
  height: 16px;
}

.footer {
  margin-top: 1.9rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  align-items: center;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

@media (max-width: 920px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-photo {
    max-width: 360px;
  }

  .projects-grid,
  .contact-layout {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 620px) {
  .site-shell {
    width: calc(100vw - 1rem);
    margin: 0.5rem auto 1.2rem;
    padding: 0.95rem 0.85rem 1.15rem;
    border-radius: 16px;
  }

  .topbar {
    flex-wrap: wrap;
    margin-bottom: 1.35rem;
  }

  .brand {
    width: 100%;
  }

  .nav {
    width: 100%;
  }

  .nav a,
  .btn,
  .theme-toggle {
    flex: 1 1 auto;
    text-align: center;
    justify-content: center;
  }

  .lead {
    font-size: 0.98rem;
  }

  .collaboration-card .collab-image {
    width: 100%;
  }
}