:root {
  --bg: #0b0d10;
  --panel: #12151a;
  --muted: #8a94a6;
  --text: #e6ecf3;
  --accent: #77e2a9;
  --accent-2: #6ea8fe;
  --border: #1e2430;
  --shadow: rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 800px at 80% -10%, rgba(119,226,169,0.15), transparent 60%),
              radial-gradient(1200px 800px at 10% 10%, rgba(110,168,254,0.15), transparent 60%),
              var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* Layout */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem;
}

.section {
  padding: 4rem 0;
}
.section-alt {
  padding: 4rem 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0));
}
.section-sub {
  color: var(--muted);
  margin-top: -0.5rem;
  margin-bottom: 2rem;
}

/* Header / Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11,13,16,0.7);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.2px;
}
.site-nav ul {
  display: flex;
  gap: 1rem;
  list-style: none;
  margin: 0; padding: 0;
}
.site-nav a {
  color: var(--text);
  text-decoration: none;
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
}
.site-nav a:hover, .site-nav a.active {
  background: var(--panel);
  border: 1px solid var(--border);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
}
.nav-toggle .bar {
  display: block;
  width: 24px; height: 2px;
  background: var(--text);
  margin: 5px 0;
  border-radius: 1px;
}

/* Hero */
.hero {
  position: relative;
  padding: 4.5rem 0 2rem;
}
.hero-backdrop {
  position: absolute;
  inset: 0;
  background: radial-gradient(800px 300px at 60% 0%, rgba(119,226,169,0.1), transparent 60%);
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: center;
}
.eyebrow {
  color: var(--muted);
  letter-spacing: 0.12em;
  font-size: 0.85rem;
  text-transform: uppercase;
}
h1 {
  margin: 0.25rem 0 0.75rem;
  font-size: 2.5rem;
  line-height: 1.2;
}
.accent { color: var(--accent); }
.lead { color: #cdd6e5; }
.hero-actions { display: flex; gap: 0.75rem; margin-top: 1.25rem; }
.hero-photo img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: 0 10px 30px var(--shadow);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  border-radius: 10px;
  text-decoration: none;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border);
  transition: transform 0.05s ease, background 0.2s ease, border-color 0.2s ease;
}
.btn:hover { transform: translateY(-1px); border-color: #2a3446; }
.btn.primary {
  background: linear-gradient(135deg, var(--accent), #56c1e9);
  color: #06131a;
  font-weight: 700;
  border: none;
}
.btn.ghost {
  background: transparent;
  border: 1px solid var(--border);
}
.btn.small { padding: 0.45rem 0.7rem; font-size: 0.92rem; }

/* Grid helpers */
.grid-2 {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
}

/* Collage */
.collage {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.collage img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
}
.collage-note { color: var(--muted); font-size: 0.9rem; margin-top: 0.5rem; }

/* Skills */
.skills-wrap {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.skill-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem;
  box-shadow: 0 6px 18px var(--shadow);
}
.skill-card h3 {
  margin-top: 0;
  font-size: 1.05rem;
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0.75rem 0 0; padding: 0;
}
.tags li {
  background: #0e1117;
  border: 1px solid var(--border);
  color: #dbe7ff;
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  font-size: 0.9rem;
}

/* Projects */
.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.project-grid.two-per-row {
  grid-template-columns: repeat(2, 1fr);
}
.project-card {
  display: grid;
  grid-template-columns: 1.1fr 1.2fr;
  gap: 1rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1rem;
  box-shadow: 0 8px 22px var(--shadow);
}
.project-media img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--border);
}
.project-content h3 {
  margin: 0.25rem 0 0.5rem;
}
.project-actions {
  display: flex; gap: 0.5rem; margin-top: 0.75rem; flex-wrap: wrap;
}
.more-projects { margin-top: 1rem; }

/* Resume */
.resume-cta { display: flex; gap: 0.75rem; }

/* Contact */
.contact-list {
  list-style: none;
  margin: 0.5rem 0 0; padding: 0;
  display: flex; gap: 1rem; flex-wrap: wrap;
}

/* Footer */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}
.footer-wrap {
  display: flex; align-items: center; justify-content: space-between;
}
.to-top {
  color: var(--accent-2);
  text-decoration: none;
}

/* Headings */
h2 {
  margin: 0 0 0.75rem;
  font-size: 1.75rem;
}
.page-title {
  font-size: 2.2rem;
  margin: 0 0 1.5rem;
}

/* Responsive */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .skills-wrap { grid-template-columns: repeat(2, 1fr); }
  .project-card { grid-template-columns: 1fr; }
  .project-grid.two-per-row { grid-template-columns: 1fr; }
  .project-media img { height: 200px; }
  .site-nav { display: none; position: absolute; top: 64px; right: 0; left: 0; background: var(--panel); border-bottom: 1px solid var(--border); }
  .site-nav.open { display: block; }
  .site-nav ul { flex-direction: column; padding: 0.5rem; }
  .nav-toggle { display: block; }
}

@media (max-width: 560px) {
  .collage img { height: 90px; }
  .skills-wrap { grid-template-columns: 1fr; }
}

/* Lightbox Modal Styles */
.lightbox-modal {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0; top: 0; width: 100vw; height: 100vh;
  background: rgba(0,0,0,0.8);
  justify-content: center;
  align-items: center;
  transition: background 0.2s;
}
.lightbox-modal.open {
  display: flex;
}
.lightbox-modal img {
  max-width: 90vw;
  max-height: 80vh;
  box-shadow: 0 8px 32px rgba(0,0,0,0.7);
  border-radius: 8px;
  background: #fff;
  animation: lightbox-in 0.25s cubic-bezier(.7,.3,.2,1);
}
@keyframes lightbox-in {
  from { transform: scale(0.95); opacity: 0;}
  to { transform: scale(1); opacity: 1;}
}
.lightbox-modal .close-btn {
  position: absolute;
  top: 2rem;
  right: 2rem;
  background: rgba(0,0,0,0.6);
  color: #fff;
  border: none;
  font-size: 2rem;
  padding: 0.2em 0.7em;
  border-radius: 100px;
  cursor: pointer;
  z-index: 10;
  transition: background 0.2s;
}
.lightbox-modal .close-btn:focus { outline: 2px solid #fff; }

.collage img,
.project-media img {
  cursor: zoom-in;
  transition: box-shadow 0.15s;
}
.collage img:focus,
.project-media img:focus {
  outline: 2px solid #0099ff;
}
@media (max-width: 600px) {
  .lightbox-modal img {
    max-width: 98vw;
    max-height: 60vh;
  }
  .lightbox-modal .close-btn {
    top: 0.8rem; right: 1rem; font-size: 1.7rem;
  }
}