/* ============================================================
   Abdullah Bakr — Filterable Projects Grid
   projects-filter.css
   ============================================================ */

/* ── SECTION HEADER ───────────────────────────────────── */
#projects .proj-header {
  margin-bottom: 52px;
}

/* ── FILTER SYSTEM CONTAINER ──────────────────────────── */
.filter-system {
  margin-bottom: 40px;
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ── MAIN CATEGORY TABS ───────────────────────────────── */
.cat-tabs-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--b1);
  margin-bottom: 18px;
}

.cat-tab {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--fm);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid var(--b1);
  background: var(--surf);
  color: var(--text3);
  cursor: pointer;
  transition: all 0.22s cubic-bezier(0.4,0,0.2,1);
  position: relative;
  white-space: nowrap;
}

.cat-tab .ct-icon {
  font-size: 13px;
  line-height: 1;
}

.cat-tab .ct-count {
  font-family: var(--fm);
  font-size: 9px;
  color: var(--text3);
  background: var(--surf2);
  border: 1px solid var(--b1);
  padding: 1px 6px;
  border-radius: 100px;
  transition: all 0.22s;
  min-width: 18px;
  text-align: center;
}

.cat-tab:hover {
  border-color: var(--b2);
  color: var(--text2);
  background: var(--surf2);
}

.cat-tab.active {
  border-color: var(--acc);
  background: rgba(59,130,246,0.08);
  color: var(--acc3);
}

.cat-tab.active .ct-count {
  background: rgba(59,130,246,0.12);
  border-color: rgba(59,130,246,0.25);
  color: var(--acc3);
}

/* Category-specific accent colors when active */
.cat-tab[data-cat="cv"].active        { border-color: var(--acc);   background: rgba(59,130,246,0.08);  color: var(--acc3); }
.cat-tab[data-cat="ml"].active        { border-color: var(--green);  background: rgba(16,185,129,0.08);  color: #6ee7b7; }
.cat-tab[data-cat="oss"].active       { border-color: var(--cyan);   background: rgba(6,182,212,0.08);   color: var(--cyan2); }
.cat-tab[data-cat="medical"].active   { border-color: #ef4444;       background: rgba(239,68,68,0.07);   color: #fca5a5; }
.cat-tab[data-cat="nlp"].active       { border-color: #a855f7;       background: rgba(168,85,247,0.08);  color: #d8b4fe; }
.cat-tab[data-cat="research"].active  { border-color: #6366f1;       background: rgba(99,102,241,0.08);  color: #c7d2fe; }

/* ── SUB-FILTER ROW ───────────────────────────────────── */
.sub-filter-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  min-height: 38px;
  overflow: hidden;
  transition: opacity 0.3s, transform 0.3s;
}

.sub-filter-row.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
}

.sub-filter-label {
  font-family: var(--fm);
  font-size: 9px;
  color: var(--text3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
  padding-right: 4px;
  border-right: 1px solid var(--b1);
  margin-right: 4px;
  height: 16px;
  display: flex;
  align-items: center;
}

.sub-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--fm);
  font-size: 9.5px;
  letter-spacing: 0.05em;
  padding: 5px 12px;
  border-radius: 6px;
  border: 1px solid var(--b1);
  background: var(--surf);
  color: var(--text3);
  cursor: pointer;
  transition: all 0.18s;
  white-space: nowrap;
}

.sub-chip:hover {
  border-color: var(--b2);
  color: var(--text2);
}

.sub-chip.active {
  border-color: var(--b2);
  background: var(--b1);
  color: var(--text);
}

/* ── RESULTS BAR ──────────────────────────────────────── */
.results-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}

.results-count {
  font-family: var(--fm);
  font-size: 10px;
  color: var(--text3);
  letter-spacing: 0.06em;
}

.results-count em {
  color: var(--text2);
  font-style: normal;
  font-weight: 600;
}

.sort-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--fm);
  font-size: 9.5px;
  color: var(--text3);
  background: var(--surf);
  border: 1px solid var(--b1);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.05em;
}

.sort-toggle:hover {
  border-color: var(--b2);
  color: var(--text2);
}

/* ── PROJECT GRID ─────────────────────────────────────── */
.proj-grid-wrap {
  min-height: 300px;
  position: relative;
}

.proj-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 20px;
  transition: all 0.3s;
}

/* Card filter animation — handled entirely by JS inline styles */
.pcard {
  will-change: opacity, transform;
}

.pcard.pf-hidden {
  display: none !important;
}

/* ── COMING SOON CARD ─────────────────────────────────── */
.pcard-coming-soon {
  border-style: dashed !important;
  border-color: rgba(168,85,247,0.2) !important;
  background: linear-gradient(135deg, var(--surf), rgba(168,85,247,0.03)) !important;
}

.pcard-coming-soon:hover {
  border-color: rgba(168,85,247,0.4) !important;
  transform: translateY(-5px);
  box-shadow: 0 20px 60px rgba(168,85,247,0.1) !important;
}

.cs-banner {
  height: 200px;
  background: linear-gradient(135deg, #0e0a1a, #160e2e);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.cs-banner-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(168,85,247,0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 40%, rgba(99,102,241,0.08) 0%, transparent 55%);
}

.cs-banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.cs-icon {
  font-size: 36px;
  filter: grayscale(0.3);
  animation: cs-float 3s ease-in-out infinite;
}

@keyframes cs-float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-6px); }
}

.cs-badge {
  font-family: var(--fm);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(168,85,247,0.15);
  border: 1px solid rgba(168,85,247,0.3);
  color: #d8b4fe;
}

.cs-dots {
  display: flex;
  gap: 5px;
  margin-top: 4px;
}

.cs-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(168,85,247,0.4);
  animation: cs-blink 1.4s ease-in-out infinite;
}
.cs-dot:nth-child(2) { animation-delay: 0.2s; }
.cs-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes cs-blink {
  0%, 80%, 100% { opacity: 0.3; transform: scale(0.8); }
  40%            { opacity: 1;   transform: scale(1.2); }
}

.ptag-coming-soon {
  background: rgba(168,85,247,0.08);
  color: #d8b4fe;
  border: 1px solid rgba(168,85,247,0.22);
}

/* ── EMPTY STATE ──────────────────────────────────────── */
.proj-empty {
  display: none;
  text-align: center;
  padding: 80px 40px;
  grid-column: 1 / -1;
}

.proj-empty.show {
  display: block;
}

.pe-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.pe-title {
  font-family: var(--ff);
  font-weight: 600;
  font-size: 18px;
  color: var(--text2);
  margin-bottom: 8px;
}

.pe-sub {
  font-family: var(--fb);
  font-size: 13px;
  color: var(--text3);
}

/* ── PAGINATION ───────────────────────────────────────── */
.proj-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 44px;
  flex-wrap: wrap;
}

.pp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  font-family: var(--fm);
  font-size: 11px;
  color: var(--text3);
  background: var(--surf);
  border: 1px solid var(--b1);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 500;
  letter-spacing: 0;
}

.pp-btn:hover:not(:disabled):not(.pp-ellipsis) {
  border-color: var(--b2);
  color: var(--text);
  background: var(--surf2);
}

.pp-btn.active {
  background: var(--acc);
  border-color: var(--acc);
  color: #fff;
  box-shadow: 0 4px 14px rgba(59,130,246,0.3);
}

.pp-btn.pp-arrow {
  font-size: 14px;
}

.pp-btn.pp-arrow:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.pp-btn.pp-ellipsis {
  cursor: default;
  border-color: transparent;
  background: transparent;
  color: var(--text3);
  width: 24px;
}

/* Page info */
.pp-info {
  font-family: var(--fm);
  font-size: 9.5px;
  color: var(--text3);
  letter-spacing: 0.05em;
  padding: 0 8px;
}

/* ── CATEGORY STATS ROW ───────────────────────────────── */
.cat-stats-row {
  display: flex;
  gap: 20px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.cat-stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--fm);
  font-size: 9.5px;
  color: var(--text3);
  padding: 6px 12px;
  border-radius: 6px;
  background: var(--surf);
  border: 1px solid var(--b1);
}

.cat-stat-pill .csp-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* ── RESPONSIVE ───────────────────────────────────────── */
@media (max-width: 768px) {
  .cat-tabs-wrap { gap: 5px; }
  .cat-tab { padding: 7px 12px; font-size: 10px; }
  .proj-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .cat-tab .ct-icon { display: none; }
  .sub-filter-label { display: none; }
}