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

:root {
  --bg: #0f0f0f;
  --bg-alt: #1a1a1a;
  --bg-card: #0f0f0f;
  --text: #d4d4d4;
  --text-muted: #777;
  --text-subtle: #555;
  --heading: #fff;
  --accent: #b8860b;
  --border: #222;
  --border-light: #333;
  --nav-link: #888;
  --nav-link-hover: #fff;
  --overlay: rgba(0, 0, 0, 0.5);
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, sans-serif;
}

[data-theme="light"] {
  --bg: #faf6f1;
  --bg-alt: #f0ebe4;
  --bg-card: #faf6f1;
  --text: #3d3429;
  --text-muted: #6b5e50;
  --text-subtle: #8a7d6f;
  --heading: #1a1410;
  --border: #ddd5ca;
  --border-light: #c8bfb3;
  --nav-link: #6b5e50;
  --nav-link-hover: #1a1410;
  --overlay: rgba(250, 246, 241, 0.5);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  transition: background 0.4s, color 0.4s;
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 2rem; }

/* ── Nav ── */
nav {
  display: flex; justify-content: space-between; align-items: center;
  padding: 2rem 0;
  position: sticky; top: 0; z-index: 100;
  background: var(--bg);
  transition: background 0.4s;
}

nav .logo {
  font-family: var(--font-heading);
  font-size: 1.3rem; font-weight: 700;
  color: var(--heading);
  letter-spacing: 0.08em; text-transform: uppercase;
  text-decoration: none;
}

nav .nav-links {
  display: flex; align-items: center;
  gap: 2.5rem; list-style: none;
  font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em;
}

nav .nav-links a {
  text-decoration: none; color: var(--nav-link);
  transition: color 0.3s;
}
nav .nav-links a:hover { color: var(--nav-link-hover); }

.theme-toggle {
  background: none; border: 1px solid var(--border-light);
  color: var(--accent); cursor: pointer;
  width: 38px; height: 38px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; transition: border-color 0.3s, color 0.3s;
}
.theme-toggle:hover { border-color: var(--accent); }

.hamburger {
  display: none; background: none; border: none;
  flex-direction: column; gap: 5px; cursor: pointer; padding: 4px;
}
.hamburger span {
  display: block; width: 24px; height: 2px;
  background: var(--heading); transition: transform 0.3s, opacity 0.3s;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ── Hero ── */
.hero { padding: 6rem 0 8rem; text-align: center; }

.hero .tag {
  font-size: 0.75rem; text-transform: uppercase;
  letter-spacing: 0.15em; color: var(--accent); margin-bottom: 2rem;
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: 4.5rem; font-weight: 400;
  color: var(--heading);
  letter-spacing: -0.02em; line-height: 1.15;
  max-width: 800px; margin: 0 auto;
}
.hero h1 em { font-style: italic; color: var(--accent); }

.hero-symbol {
  width: 160px; height: 160px; margin: 3rem auto 0;
  background: var(--bg-alt); border: 2px solid var(--border-light);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 2.5rem;
  transition: background 0.4s, border-color 0.4s;
}

/* ── Section shared ── */
.section-label {
  font-size: 0.7rem; text-transform: uppercase;
  letter-spacing: 0.2em; color: var(--accent);
  margin: 5rem 0 2rem;
  font-family: var(--font-body);
}

.section { padding: 4rem 0; }

/* ── About ── */
.about-content {
  display: flex; gap: 3rem; align-items: center;
}

.about-photo {
  width: 200px; height: 200px; flex-shrink: 0;
  background: var(--bg-alt); border: 2px solid var(--border-light);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-subtle); font-size: 0.8rem;
  text-transform: uppercase; letter-spacing: 0.1em;
  overflow: hidden;
  transition: background 0.4s, border-color 0.4s;
}
.about-photo img {
  width: 100%; height: 100%; object-fit: cover;
}

.about-text h2 {
  font-family: var(--font-heading);
  font-size: 2rem; font-weight: 400;
  color: var(--heading); margin-bottom: 1rem;
}
.about-text p {
  color: var(--text-muted); line-height: 1.8;
  max-width: 560px;
}
.about-cta {
  margin-top: 1.5rem;
}
.about-cta a {
  color: var(--accent); text-decoration: none;
  border-bottom: 1px solid var(--accent);
  transition: color 0.3s, border-color 0.3s;
}
.about-cta a:hover {
  color: var(--heading);
  border-color: var(--heading);
}

/* ── Skills ── */
.skills-list {
  list-style: none; display: flex; flex-wrap: wrap;
  gap: 0.75rem 2rem;
}
.skills-list li {
  font-size: 0.95rem; color: var(--text);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  min-width: 200px; flex: 1 1 200px;
  transition: color 0.3s;
}
.skills-list li::before {
  content: '—'; color: var(--accent); margin-right: 0.75rem;
}

/* ── Projects ── */
.work-grid {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.work-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  text-decoration: none; color: inherit;
  display: block; overflow: hidden;
  transition: border-color 0.3s;
}
.work-card:hover { border-color: var(--accent); }

.work-card-img {
  width: 100%; aspect-ratio: 16/10;
  background: var(--bg-alt);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-subtle); font-size: 0.8rem;
  text-transform: uppercase; letter-spacing: 0.1em;
}
.work-card-img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.5s ease;
}
.work-card:hover .work-card-img img { transform: scale(1.05); }

.work-card-body { padding: 1.5rem; }
.work-card .num { font-size: 0.7rem; color: var(--text-subtle); margin-bottom: 0.5rem; }
.work-card h3 {
  font-family: var(--font-heading);
  font-size: 1.3rem; color: var(--heading);
  font-weight: 400; margin-bottom: 0.3rem;
}
.work-card .cat { font-size: 0.85rem; color: var(--text-muted); }
.work-card .desc {
  font-size: 0.85rem; color: var(--text-muted);
  margin-top: 0.75rem; line-height: 1.6;
}

/* ── Contact ── */
.contact-content {
  display: flex; gap: 2rem; flex-wrap: wrap;
}
.contact-item {
  display: flex; align-items: center; gap: 0.75rem;
  text-decoration: none; color: var(--text);
  font-size: 0.95rem; padding: 1rem 1.5rem;
  border: 1px solid var(--border);
  transition: border-color 0.3s, color 0.3s;
  min-height: 48px;
}
.contact-item:hover { border-color: var(--accent); color: var(--heading); }
.contact-item .contact-icon { color: var(--accent); font-size: 1.2rem; }

/* ── Footer ── */
footer {
  text-align: center; padding: 4rem 0 2rem;
  border-top: 1px solid var(--border);
}
.footer-social { margin-bottom: 1.5rem; }
.footer-social a {
  text-decoration: none; color: var(--nav-link);
  font-size: 0.85rem; text-transform: uppercase;
  letter-spacing: 0.06em; transition: color 0.3s;
}
.footer-social a:hover { color: var(--accent); }

.footer-copy {
  color: var(--text-subtle); font-size: 0.8rem;
  text-transform: uppercase; letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.back-to-top {
  display: inline-block; text-decoration: none;
  color: var(--accent); font-size: 0.75rem;
  text-transform: uppercase; letter-spacing: 0.15em;
  transition: color 0.3s;
}
.back-to-top:hover { color: var(--heading); }

/* ── Fade-in animation ── */
.fade-in {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1; transform: translateY(0);
}

/* ── Detail page ── */
.project-hero {
  width: 100%; aspect-ratio: 16/9;
  background: var(--bg-alt);
  overflow: hidden; margin-bottom: 3rem;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-subtle); font-size: 0.8rem;
  text-transform: uppercase; letter-spacing: 0.1em;
}
.project-hero img { width: 100%; height: 100%; object-fit: cover; }

.project-header { margin-bottom: 3rem; }
.project-header .cat {
  font-size: 0.75rem; text-transform: uppercase;
  letter-spacing: 0.15em; color: var(--accent); margin-bottom: 1rem;
}
.project-header h1 {
  font-family: var(--font-heading);
  font-size: 3rem; font-weight: 400;
  color: var(--heading); margin-bottom: 1.5rem;
}
.project-header p {
  color: var(--text-muted); line-height: 1.8;
  max-width: 720px;
}

.project-tools { margin: 3rem 0; }
.project-tools h3 {
  font-size: 0.7rem; text-transform: uppercase;
  letter-spacing: 0.2em; color: var(--accent); margin-bottom: 1rem;
}
.project-tools ul {
  list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem;
}
.project-tools li {
  font-size: 0.85rem; color: var(--text);
  padding: 0.4rem 1rem;
  border: 1px solid var(--border);
}

.project-gallery {
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: 1rem; margin: 3rem 0;
}
.project-gallery-item {
  aspect-ratio: 4/3; background: var(--bg-alt);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-subtle); font-size: 0.8rem;
  text-transform: uppercase; letter-spacing: 0.1em;
}
.project-gallery-item img { width: 100%; height: 100%; object-fit: cover; }

.project-nav {
  display: flex; justify-content: space-between;
  padding: 3rem 0; border-top: 1px solid var(--border);
}
.project-nav a {
  text-decoration: none; color: var(--nav-link);
  font-size: 0.85rem; text-transform: uppercase;
  letter-spacing: 0.06em; transition: color 0.3s;
}
.project-nav a:hover { color: var(--accent); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .hero h1 { font-size: 2.5rem; }
  .work-grid { grid-template-columns: 1fr; }
  .project-gallery { grid-template-columns: 1fr; }
  .about-content { flex-direction: column; align-items: flex-start; }
  .about-photo { width: 160px; height: 160px; }
  .project-header h1 { font-size: 2rem; }

  nav .nav-links {
    display: none; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg); padding: 2rem;
    gap: 1.5rem; border-bottom: 1px solid var(--border);
  }
  nav .nav-links.open { display: flex; }
  .hamburger { display: flex; }
  .nav-links .theme-toggle { align-self: flex-start; }

  .contact-content { flex-direction: column; }
  .contact-item { width: 100%; }
  .skills-list { flex-direction: column; }
  .skills-list li { min-width: unset; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .hero { padding: 4rem 0 5rem; }
  .container { padding: 0 1rem; }
  nav { padding: 1.5rem 0; }
}