:root{
  --bg: #0b1220;
  --panel: rgba(255,255,255,.06);
  --panel2: rgba(255,255,255,.09);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.72);
  --border: rgba(255,255,255,.12);
  --accent: #7dd3fc;
  --shadow: 0 12px 40px rgba(0,0,0,.35);
  --radius: 18px;
  --max: 1100px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

/* Light theme (day mode) */
body[data-theme="light"]{
  --bg: #cfefff;
  --panel: rgba(2, 56, 110, .07);
  --panel2: rgba(2, 56, 110, .10);
  --text: rgba(5, 22, 45, .92);
  --muted: rgba(5, 22, 45, .68);
  --border: rgba(2, 56, 110, .16);
  --accent: #0ea5e9;
  --shadow: 0 10px 30px rgba(2, 24, 45, .14);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  font-family: var(--sans);
  background: radial-gradient(1200px 800px at 20% 0%, rgba(14,165,233,.14), transparent 60%),
              radial-gradient(900px 700px at 80% 10%, rgba(59,130,246,.12), transparent 55%),
              var(--bg);
  color: var(--text);
}

img{ max-width:100%; display:block; border-radius: calc(var(--radius) - 6px); }
a{ color: var(--text); text-decoration: none; }
a:hover{ text-decoration: underline; }
code{
  font-family: var(--mono);
  font-size: .92em;
  background: color-mix(in srgb, var(--panel) 70%, transparent);
  padding: .15rem .35rem;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.container{ width: min(100% - 2rem, var(--max)); margin-inline: auto; }
.section{ padding: 2.5rem 0; }
.section.hero{ padding-top: 2.5rem; }

h1{ font-size: clamp(2rem, 4vw, 3.1rem); line-height: 1.1; margin: .5rem 0 1rem; }
h2{ font-size: 1.8rem; margin: 0 0 1rem; }
h3{ margin: 0 0 .75rem; }
h4{ margin: 0 0 .35rem; font-size: 1rem; color: var(--muted); font-weight: 600; }

.lead{ font-size: 1.075rem; color: var(--muted); line-height: 1.65; }
.muted{ color: var(--muted); }
.small{ font-size: .95rem; color: var(--muted); }
.eyebrow{ letter-spacing: .08em; text-transform: uppercase; font-size: .85rem; color: var(--muted); }

.accent{ color: var(--accent); }

.skip-link{
  position:absolute;
  left:-999px;
  top: .75rem;
  background: #fff;
  color:#000;
  padding:.5rem .75rem;
  border-radius: 10px;
  z-index: 999;
}
.skip-link:focus{ left: .75rem; }

.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 55%, transparent);
  border-bottom: 1px solid var(--border);
}

.nav{
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding: .85rem 0;
  gap: 1rem;
}

.brand{
  display:flex;
  align-items:center;
  gap:.6rem;
  font-weight: 700;
}
.brand-mark{
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display:grid;
  place-items:center;
  background: linear-gradient(135deg, rgba(125,211,252,.25), rgba(167,139,250,.2));
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.brand-text{ white-space: nowrap; }

.nav-links{
  display:flex;
  align-items:center;
  gap: 1rem;
}
.nav-links a{ color: color-mix(in srgb, var(--text) 86%, transparent); }
.nav-toggle{
  display:none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 12px;
  padding: .4rem .6rem;
  cursor: pointer;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding: .85rem 1.05rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--panel2);
  box-shadow: var(--shadow);
  text-decoration:none !important;
}
.btn:hover{ background: color-mix(in srgb, var(--panel2) 75%, white 25%); }
.btn-ghost{ background: transparent; }
.btn-sm{ padding: .55rem .8rem; border-radius: 12px; }

.cta-row{ display:flex; gap:.75rem; flex-wrap:wrap; margin: 1.25rem 0 .75rem; }
.link-row{ display:flex; gap:.6rem; flex-wrap:wrap; }

.card{
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.2rem;
  box-shadow: var(--shadow);
}

.hero-grid{
  display:grid;
  grid-template-columns: 1.4fr .9fr;
  gap: 1.25rem;
  align-items: start;
}
.hero-card{ padding: 1rem; }
.hero-img{
  width: 100%;
  aspect-ratio: 4 / 4.2;
  object-fit: cover;
  border-radius: calc(var(--radius) - 6px);
  border: 1px solid var(--border);
}
.hero-card-meta{ margin-top: .85rem; }

.two-col{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
}

.section-head{
  display:flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.project-grid{
  display:grid;
  grid-template-columns: 1fr;
  gap: .85rem;
}
.project{
  padding: 0;
  overflow: hidden;
}
.project-media{
  padding: 1rem 1rem 0;
}
.project-media img{
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border: 1px solid var(--border);
}
.project-body{
  padding: 1rem 1.15rem 1.2rem;
}

.pill-row{ display:flex; gap:.5rem; flex-wrap:wrap; margin: .75rem 0; }
.pill{
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--panel) 70%, transparent);
  border-radius: 999px;
  padding: .25rem .55rem;
  font-size: .85rem;
  color: color-mix(in srgb, var(--text) 88%, transparent);
}

.project-detail{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: .9rem 1rem;
  margin-top: .85rem;
}
.project-detail p{ margin: 0; color: color-mix(in srgb, var(--text) 85%, transparent); line-height: 1.5; }

.skills-grid{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .75rem;
}

.list{
  margin: .25rem 0 0;
  padding-left: 1.1rem;
  color: color-mix(in srgb, var(--text) 85%, transparent);
  line-height: 1.6;
}

.contact-card h2{ margin-bottom: .5rem; }
.contact-grid{
  margin-top: 1rem;
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .65rem;
}
.contact-item{
  display:block;
  padding: .9rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--panel);
  text-decoration: none !important;
}
.contact-item:hover{ background: var(--panel2); }
.contact-label{ display:block; font-size: .85rem; color: var(--muted); }
.contact-value{ display:block; margin-top: .15rem; font-weight: 650; }

.footer{
  padding: 1.5rem 0 2.5rem;
  border-top: 1px solid var(--border);
  background: rgba(0,0,0,.12);
}
.footer-row{
  display:flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

/* Responsive */
@media (max-width: 900px){
  .hero-grid{ grid-template-columns: 1fr; }
  .two-col{ grid-template-columns: 1fr; }
  .skills-grid{ grid-template-columns: 1fr; }
  .project-detail{ grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
  .nav-toggle{ display:inline-flex; }
  .nav-links{
    display:none;
    width: 100%;
    padding-top: .75rem;
    flex-direction: column;
    align-items: flex-start;
  }
  .nav-links.is-open{ display:flex; }
  .nav{ flex-wrap: wrap; }
}

/* Project layout upgrade for wider screens */
@media (min-width: 980px){
  .project{
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 0;
    align-items: start;
  }
  .project-media{
    padding: 1.15rem;
  }
  .project-body{
    padding: 1.15rem 1.35rem 1.35rem;
  }
}
@media (min-width: 1100px){
  .project-detail{
    grid-template-columns: repeat(3, 1fr);
  }
}

.sr-only{
  position:absolute;
  width:1px;
  height:1px;
  padding:0;
  margin:-1px;
  overflow:hidden;
  clip:rect(0,0,0,0);
  border:0;
}