/* ══════════════════════════════════════════════
   Portfolio Page Styles
   ============================================== */

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 36px;
}

.filter-btn {
  padding: 8px 18px;
  border-radius: var(--r-full);
  font-size: 0.82rem;
  font-weight: 600;
  background: var(--bg);
  border: 1.5px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--t-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--blue);
  color: var(--text-inverse);
  border-color: var(--blue);
}

/* ── Case Study Cards ── */
.case-study {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  overflow: hidden;
  transition: all var(--t-base) var(--ease);
}

.case-study:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.case-study__visual {
  aspect-ratio: 16/10;
  position: relative;
  overflow: hidden;
  background: #0a1628;
}

.case-study__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  transition: transform 0.4s ease;
}

.case-study:hover .case-study__visual img { transform: scale(1.04); }

.case-study__body { padding: 24px; }

.case-study__type {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--cyan);
  margin-bottom: 6px;
}

.case-study__body h3 { margin-bottom: 8px; }
.case-study__body p { font-size: 0.88rem; margin-bottom: 16px; }

.case-study__results {
  display: flex;
  gap: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.case-study__metric { text-align: center; }

.case-study__metric strong {
  display: block;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--blue);
}

.case-study__metric span {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.cs-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  padding: 10px 20px;
  border-radius: var(--r-full);
  font-size: 0.82rem;
  font-weight: 600;
  color: #2563eb;
  border: 1.5px solid #2563eb;
  background: transparent;
  text-decoration: none;
  transition: all 0.2s ease;
}

.cs-link:hover { background: #2563eb; color: #fff; }

/* ── Dark Mode ── */
[data-theme="dark"] .case-study { background: var(--bg-white); border-color: var(--border); }
[data-theme="dark"] .case-study__body h3 { color: var(--text); }
[data-theme="dark"] .case-study__results { border-top-color: var(--border); }
[data-theme="dark"] .filter-btn { background: var(--bg-alt); border-color: var(--border); color: var(--text-secondary); }
[data-theme="dark"] .cs-link { color: #60a5fa; border-color: #60a5fa; }
[data-theme="dark"] .cs-link:hover { background: #2563eb; color: #fff; border-color: #2563eb; }