/* ── Reset & Base ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #f5f0e8;
  --text: #2c2c2c;
  --text-light: #6b6560;
  --accent: #3a3a3a;
  --border: #ddd5c8;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ── */
a {
  color: var(--text);
  text-decoration: none;
}

/* ── Header ── */
.site-header {
  padding: 2rem 2rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

.site-title {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.site-nav {
  display: flex;
  gap: 1.75rem;
}

.site-nav a {
  font-size: 0.875rem;
  color: var(--text-light);
  transition: color 0.2s ease;
  position: relative;
}

.site-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--text);
  transition: width 0.25s ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--text);
}

.site-nav a:hover::after,
.site-nav a.active::after {
  width: 100%;
}

/* ── Portfolio Grid ── */
.portfolio-grid {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 1rem 2rem 4rem;
  columns: 3;
  column-gap: 1.25rem;
}

.grid-item {
  break-inside: avoid;
  margin-bottom: 1.25rem;
  cursor: pointer;
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.grid-item img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 0.4s ease, filter 0.4s ease;
}

.grid-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0);
  transition: background 0.3s ease;
  pointer-events: none;
}

.grid-item:hover img {
  transform: scale(1.02);
  filter: brightness(0.95);
}

.grid-item:hover::after {
  background: rgba(0, 0, 0, 0.04);
}

/* ── Lightbox ── */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(20, 18, 15, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 4px;
  transform: scale(0.95);
  transition: transform 0.35s ease;
}

.lightbox.active img {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease;
  line-height: 1;
}

.lightbox-close:hover {
  color: #fff;
}

/* ── Footer ── */
.site-footer {
  margin-top: auto;
  padding: 2rem;
  text-align: center;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  list-style: none;
}

.social-links a {
  font-size: 0.8125rem;
  color: var(--text-light);
  transition: color 0.2s ease;
  letter-spacing: 0.02em;
}

.social-links a:hover {
  color: var(--text);
}

/* ── About Page ── */
.about-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 2rem 4rem;
}

.about-portrait {
  width: 100%;
  max-width: 360px;
  border-radius: 4px;
  margin-bottom: 2.5rem;
}

.about-content h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.about-content p {
  color: var(--text-light);
  margin-bottom: 1rem;
  font-size: 0.9375rem;
  line-height: 1.75;
}

.about-content a {
  color: var(--text);
  border-bottom: 1px solid var(--border);
  transition: border-color 0.2s ease;
}

.about-content a:hover {
  border-color: var(--text);
}

/* ── Empty State ── */
.empty-state {
  text-align: center;
  padding: 6rem 2rem;
  color: var(--text-light);
  font-size: 0.9375rem;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .portfolio-grid {
    columns: 2;
    padding: 1rem 1.5rem 3rem;
  }

  .site-header {
    padding: 1.5rem;
  }
}

@media (max-width: 560px) {
  .portfolio-grid {
    columns: 1;
    padding: 0.75rem 1rem 2rem;
  }

  .site-header {
    padding: 1.25rem 1rem;
    flex-direction: column;
    gap: 0.75rem;
  }

  .site-nav {
    gap: 1.25rem;
  }

  .about-content {
    padding: 1rem 1rem 3rem;
  }

  .lightbox-close {
    top: 1rem;
    right: 1rem;
  }
}