:root {
  --bg: #fff;
  --ink: #111;
  --muted: #555;
  --accent: #16a34a;
  --border: #eee;
  --maxw: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Inter', sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
img { width: 100%; display: block; border-radius: 6px; object-fit: cover; }
a { text-decoration: none; color: inherit; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}
.container-wide {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.97);
  border-bottom: 1px solid var(--border);
  z-index: 10;
  backdrop-filter: blur(6px);
}
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
}
.left-links, .right-links { display: flex; align-items: center; gap: 20px; }
.logo { font-weight: 700; font-size: 1rem; }
.nav-link {
  font-weight: 500;
  transition: color 0.2s;
}
.nav-link:hover, .nav-link.active { color: var(--accent); }
.btn-contact {
  border: 1px solid var(--accent);
  padding: 6px 14px;
  border-radius: 20px;
  color: var(--accent);
  font-weight: 600;
  transition: all 0.2s;
}
.btn-contact:hover { background: var(--accent); color: #fff; }

/* Landing page large grid */
.grid-large {
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
  margin: 80px 0;
}
.grid-large .project img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid var(--border);
  transition: transform 0.5s ease;
}
.grid-large .project:hover img { transform: scale(1.02); }

/* Projects page normal grid */
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px;
  margin: 80px 0;
}
@media (max-width: 900px) {
  .grid { grid-template-columns: 1fr; }
}
.project img {
  border-radius: 10px;
  border: 1px solid var(--border);
  transition: transform 0.4s ease;
}
.project:hover img { transform: scale(1.03); }

/* About page */
.about-page {
  padding: 100px 0;
}
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: center;
}
@media (max-width: 900px) {
  .about-inner { grid-template-columns: 1fr; text-align: center; }
  .about-photo { max-width: 300px; margin: 0 auto; }
}
.about-photo img { border-radius: 12px; border: 1px solid var(--border); }
.about-text h1 { font-size: 2.4rem; margin-bottom: 24px; }
.about-text p { color: var(--muted); margin-bottom: 14px; font-size: 1rem; }

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 30px 0;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Landing page large grid (updated proportions) */
/* Landing page grid - 4x4 portrait layout */
.grid-large {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin: 100px auto;
  justify-items: center;
}

.grid-large .project {
  width: 100%;
  max-width: 420px; /* ensures consistent sizing */
}

.grid-large .project img {
  width: 100%;
  aspect-ratio: 202 / 269;  /* portrait shape */
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
  transition: transform 0.4s ease;
  background: #fafafa;
}

.grid-large .project:hover img {
  transform: scale(1.02);
}

/* Responsive breakpoints */
@media (max-width: 1300px) {
  .grid-large {
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
  }
}

@media (max-width: 900px) {
  .grid-large {
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
  }
}

@media (max-width: 600px) {
  .grid-large {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}