/* =========================================================
   faculty.css - IGCE Faculty Directory & Department Faculty Styling
   Matches Indra Ganesan College of Engineering Brand & Theme
   ========================================================= */

:root {
  --faculty-primary: #0d6efd;
  --faculty-primary-dark: #0b5ed7;
  --faculty-primary-light: #e8f4ff;
  --faculty-brand-header: #1a5f9e;
  --faculty-secondary: #2c3e50;
  --faculty-text: #2b303a;
  --faculty-text-muted: #6c757d;
  --faculty-bg-light: #f8faff;
  --faculty-card-border: rgba(13, 110, 253, 0.12);
  --faculty-card-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  --faculty-card-hover-shadow: 0 14px 30px rgba(13, 110, 253, 0.16);
  --faculty-radius: 16px;
}

body {
  font-family: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--faculty-text);
  background-color: #fbfcfd;
}

/* Faculty Banner Header */
.faculty-page-header {
  background: linear-gradient(135deg, #1a5f9e 0%, #0d6efd 60%, #0048ba 100%);
  color: #ffffff;
  padding: 3.5rem 0 3rem;
  position: relative;
  overflow: hidden;
}

.faculty-page-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.faculty-page-header .breadcrumb {
  margin-bottom: 1.25rem;
}

.faculty-page-header .breadcrumb-item a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.faculty-page-header .breadcrumb-item a:hover {
  color: #ffffff;
  text-decoration: underline;
}

.faculty-page-header .breadcrumb-item.active {
  color: #ffffff;
  font-weight: 600;
  font-size: 0.9rem;
}

.faculty-page-header .breadcrumb-item + .breadcrumb-item::before {
  color: rgba(255, 255, 255, 0.6);
}

.faculty-page-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  color: #ffffff;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.faculty-page-header .lead {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.92);
  max-width: 750px;
  line-height: 1.6;
}

.faculty-header-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
}

.faculty-stat-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 0.45rem 1rem;
  border-radius: 50rem;
  color: #ffffff;
  font-size: 0.88rem;
  font-weight: 500;
}

/* Quick Department Navigation Strip */
.dept-nav-strip {
  background: #ffffff;
  border-bottom: 1px solid #e9ecef;
  padding: 0.75rem 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.dept-pills-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  white-space: nowrap;
  padding: 0.25rem 0;
  scrollbar-width: thin;
}

.dept-pills-container::-webkit-scrollbar {
  height: 4px;
}

.dept-pills-container::-webkit-scrollbar-thumb {
  background: #dee2e6;
  border-radius: 4px;
}

.dept-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.9rem;
  border-radius: 50rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: #495057;
  background: #f1f3f5;
  border: 1px solid transparent;
  text-decoration: none;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.dept-pill-btn:hover {
  background: var(--faculty-primary-light);
  color: var(--faculty-primary);
  border-color: rgba(13, 110, 253, 0.3);
}

.dept-pill-btn.active {
  background: var(--faculty-primary);
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 4px 10px rgba(13, 110, 253, 0.3);
}

/* Filter and Search Bar */
.faculty-filter-section {
  background: #ffffff;
  border: 1px solid #eef2f6;
  border-radius: var(--faculty-radius);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0 1.5rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
}

.faculty-search-input {
  border-radius: 50rem;
  padding-left: 2.75rem;
  border: 1.5px solid #dee2e6;
  font-size: 0.92rem;
  transition: all 0.2s ease;
}

.faculty-search-input:focus {
  border-color: var(--faculty-primary);
  box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.15);
}

.faculty-search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: #6c757d;
  font-size: 1rem;
}

.filter-btn-group .btn {
  border-radius: 50rem;
  font-size: 0.84rem;
  font-weight: 500;
  padding: 0.35rem 0.9rem;
  margin: 0.15rem;
  border: 1px solid #dee2e6;
  background: #f8f9fa;
  color: #495057;
  transition: all 0.2s ease;
}

.filter-btn-group .btn:hover {
  background: var(--faculty-primary-light);
  color: var(--faculty-primary);
  border-color: var(--faculty-primary);
}

.filter-btn-group .btn.active {
  background: var(--faculty-primary);
  color: #ffffff;
  border-color: var(--faculty-primary);
  font-weight: 600;
}

/* Faculty Grid & Cards */
.faculty-card {
  background: #ffffff;
  border: 1px solid var(--faculty-card-border);
  border-radius: var(--faculty-radius);
  box-shadow: var(--faculty-card-shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.faculty-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--faculty-card-hover-shadow);
  border-color: rgba(13, 110, 253, 0.35);
}

.faculty-card-photo-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 3.8;
  background: linear-gradient(180deg, #f0f4f9 0%, #e2eaf2 100%);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.faculty-card-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.4s ease;
}

.faculty-card:hover .faculty-card-photo {
  transform: scale(1.04);
}

.faculty-badge-sno {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.6rem;
  border-radius: 50rem;
  z-index: 2;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.faculty-badge-phd {
  position: absolute;
  top: 12px;
  right: 12px;
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.28rem 0.65rem;
  border-radius: 50rem;
  z-index: 2;
  box-shadow: 0 2px 8px rgba(217, 119, 6, 0.35);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.faculty-card-body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.faculty-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: #1a2530;
  line-height: 1.35;
  margin-bottom: 0.35rem;
}

.faculty-designation {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--faculty-primary);
  margin-bottom: 0.6rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.faculty-dept-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  background: #eef2f6;
  color: #495057;
  margin-bottom: 0.85rem;
  width: fit-content;
}

.faculty-dept-tag.subject-tag {
  background: #e0f2fe;
  color: #0369a1;
  border: 1px solid #bae6fd;
}

.faculty-id-box {
  background: #f8faff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 0.6rem 0.75rem;
  margin-top: auto;
}

.faculty-id-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  line-height: 1.5;
}

.faculty-id-row:not(:last-child) {
  margin-bottom: 0.3rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px dashed #e2e8f0;
}

.faculty-id-label {
  color: #64748b;
  font-weight: 600;
  font-size: 0.75rem;
}

.faculty-id-value {
  color: #0f172a;
  font-weight: 600;
  font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.78rem;
}

.faculty-card-footer {
  padding: 0.6rem 1.25rem 0.85rem;
  background: #ffffff;
  border-top: 1px solid #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faculty-affiliation-badge {
  font-size: 0.72rem;
  font-weight: 600;
  color: #10b981;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

/* Empty search state */
.faculty-empty-state {
  text-align: center;
  padding: 4rem 1rem;
  background: #ffffff;
  border-radius: var(--faculty-radius);
  border: 1px dashed #cbd5e1;
  margin: 2rem 0;
}

.faculty-empty-state i {
  font-size: 3rem;
  color: #94a3b8;
  margin-bottom: 1rem;
}

/* Responsive utilities */
@media (max-width: 767.98px) {
  .faculty-page-header h1 {
    font-size: 1.85rem;
  }
  .faculty-filter-section {
    padding: 1rem;
  }
}