/* =====================
   Variables & Base
   ===================== */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --accent: #7c3aed;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --bg-light: #f8fafc;
  --card-shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --card-shadow-hover: 0 4px 12px rgba(0,0,0,.12);
  --radius: .75rem;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.7;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

/* =====================
   Navbar
   ===================== */
.navbar {
  box-shadow: 0 1px 0 var(--border);
  padding-top: .85rem;
  padding-bottom: .85rem;
}

.navbar-brand {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--text) !important;
}

.navbar-brand span { color: var(--primary); }

.nav-link {
  font-weight: 500;
  color: var(--text-muted) !important;
  padding: .4rem .8rem !important;
  border-radius: .4rem;
  transition: background .15s, color .15s;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary) !important;
  background: rgba(37,99,235,.07);
}

/* =====================
   Page Header
   ===================== */
.page-header {
  background: linear-gradient(135deg, #eff6ff 0%, #f0fdf4 100%);
  border-bottom: 1px solid var(--border);
  padding: 3rem 0 2.5rem;
}

.page-header h1 { font-weight: 700; letter-spacing: -.03em; }

/* =====================
   Cards — Blog
   ===================== */
.post-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  transition: box-shadow .2s, transform .2s;
  overflow: hidden;
}

.post-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

.post-card .card-body { padding: 1.5rem; }

.post-card .card-title a {
  color: var(--text);
  font-weight: 700;
  font-size: 1.15rem;
  line-height: 1.3;
}

.post-card .card-title a:hover { color: var(--primary); }

.post-meta {
  font-size: .82rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: .5rem;
  flex-wrap: wrap;
}

.post-meta .separator { opacity: .4; }

.badge-category {
  display: inline-block;
  padding: .2rem .65rem;
  border-radius: 9999px;
  font-size: .75rem;
  font-weight: 600;
  background: rgba(37,99,235,.1);
  color: var(--primary);
  letter-spacing: .02em;
}

.badge-category:hover {
  background: var(--primary);
  color: #fff;
}

/* =====================
   Sidebar
   ===================== */
.sidebar-widget {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.4rem;
  margin-bottom: 1.5rem;
  background: var(--bg-light);
}

.sidebar-widget h5 {
  font-weight: 700;
  font-size: .9rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.category-list { list-style: none; padding: 0; margin: 0; }

.category-list li + li { border-top: 1px solid var(--border); }

.category-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .5rem 0;
  color: var(--text);
  font-size: .9rem;
  font-weight: 500;
}

.category-list a:hover { color: var(--primary); }

.category-list .count {
  font-size: .78rem;
  background: var(--border);
  color: var(--text-muted);
  padding: .1rem .5rem;
  border-radius: 9999px;
}

/* =====================
   Single Post
   ===================== */
.post-hero {
  background: linear-gradient(135deg, #eff6ff 0%, #eef2ff 100%);
  border-bottom: 1px solid var(--border);
  padding: 3.5rem 0 3rem;
}

.post-body {
  font-size: 1.05rem;
  line-height: 1.85;
  max-width: 72ch;
}

.post-body h2, .post-body h3 { font-weight: 700; margin-top: 2rem; }

.post-body pre {
  background: #1e293b;
  color: #e2e8f0;
  border-radius: .5rem;
  padding: 1.25rem;
  font-size: .88rem;
  overflow-x: auto;
}

.post-body code {
  background: #f1f5f9;
  color: #7c3aed;
  padding: .1em .35em;
  border-radius: .25rem;
  font-size: .9em;
}

.post-body pre code { background: none; color: inherit; padding: 0; }

/* =====================
   Pagination
   ===================== */
.pagination .page-link {
  color: var(--primary);
  border-color: var(--border);
  border-radius: .4rem !important;
  margin: 0 .15rem;
  padding: .45rem .85rem;
  font-weight: 500;
}

.pagination .page-item.active .page-link {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.pagination .page-link:hover {
  background: rgba(37,99,235,.07);
  color: var(--primary);
}

/* =====================
   Project Cards
   ===================== */
.project-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  transition: box-shadow .2s, transform .2s;
  height: 100%;
}

.project-card:hover {
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-3px);
}

.project-img-placeholder {
  height: 160px;
  background: linear-gradient(135deg, #eff6ff 0%, #eef2ff 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius) var(--radius) 0 0;
  font-size: 3rem;
}

.tech-tag {
  display: inline-block;
  padding: .2rem .6rem;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: .3rem;
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-muted);
  margin: .15rem;
}

.status-badge {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
  padding: .2rem .6rem;
  border-radius: 9999px;
}

.status-active { background: #dcfce7; color: #166534; }
.status-in-progress { background: #fef9c3; color: #854d0e; }
.status-archived { background: #f1f5f9; color: var(--text-muted); }

/* =====================
   Photo Gallery
   ===================== */
.photo-grid {
  columns: 3 280px;
  gap: 1rem;
}

.photo-item {
  break-inside: avoid;
  margin-bottom: 1rem;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  position: relative;
  cursor: pointer;
  transition: box-shadow .2s;
}

.photo-item:hover { box-shadow: var(--card-shadow-hover); }

.photo-item img {
  width: 100%;
  display: block;
  transition: transform .3s;
}

.photo-item:hover img { transform: scale(1.03); }

.photo-overlay {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,.65));
  color: #fff;
  padding: 1.5rem .85rem .75rem;
  opacity: 0;
  transition: opacity .2s;
}

.photo-item:hover .photo-overlay { opacity: 1; }

.photo-overlay p { font-size: .82rem; margin: 0; }

.filter-btn {
  border-radius: 9999px !important;
  font-size: .85rem;
  font-weight: 600;
}

/* =====================
   Resume
   ===================== */
.resume-section { margin-bottom: 2.5rem; }

.resume-section-title {
  font-weight: 700;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
  padding-bottom: .4rem;
  margin-bottom: 1.25rem;
}

.experience-item + .experience-item { margin-top: 1.75rem; padding-top: 1.75rem; border-top: 1px solid var(--border); }

.experience-item h5 { font-weight: 700; margin-bottom: .2rem; }

.skill-group { margin-bottom: .85rem; }

.skill-group strong { font-size: .85rem; color: var(--text-muted); display: block; margin-bottom: .35rem; }

.skill-pill {
  display: inline-block;
  padding: .25rem .7rem;
  background: rgba(37,99,235,.09);
  color: var(--primary);
  border-radius: 9999px;
  font-size: .8rem;
  font-weight: 600;
  margin: .15rem;
}

/* =====================
   Footer
   ===================== */
footer {
  background: var(--text);
  color: #94a3b8;
  padding: 2.5rem 0;
  margin-top: 4rem;
  font-size: .9rem;
}

footer a { color: #cbd5e1; }
footer a:hover { color: #fff; }

/* =====================
   Responsive tweaks
   ===================== */
@media (max-width: 768px) {
  .photo-grid { columns: 2 200px; }
  .post-hero { padding: 2rem 0 1.5rem; }
  .page-header { padding: 2rem 0 1.5rem; }
}

@media (max-width: 480px) {
  .photo-grid { columns: 1; }
}