/* Header Section */
.portfolio-header-section {
  padding: 160px 0 60px 0;
  background: linear-gradient(rgba(0, 0, 0, 0.45), rgba(0, 0, 0, 0.65)), url('/solar-banner.webp') no-repeat center center;
  background-size: cover;
  text-align: center;
  border-bottom: 1px solid var(--card-border);
}

.portfolio-header-section h1 {
  font-size: 3.2rem;
  margin-bottom: 15px;
  color: var(--primary-yellow);
}

.portfolio-header-section p {
  font-size: 1.15rem;
  color: #FFFFFF;
  font-weight: 500;
  max-width: 700px;
  margin: 0 auto;
}

/* Filter Controls */
.filter-controls {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(30, 30, 30, 0.6);
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  padding: 12px 24px;
  border-radius: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.filter-btn:hover {
  color: var(--text-primary);
  border-color: #555555;
  transform: translateY(-2px);
}

.filter-btn.active {
  background: var(--primary-yellow);
  color: #000000;
  border-color: var(--primary-yellow);
  box-shadow: var(--yellow-glow);
}

.filter-btn.active:hover {
  box-shadow: var(--yellow-glow-strong);
}

/* Loader */
.gallery-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 0;
  gap: 15px;
  color: var(--text-secondary);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 215, 0, 0.1);
  border-top-color: var(--primary-yellow);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  box-shadow: var(--yellow-glow);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Empty items card */
.no-items-card {
  padding: 60px;
  text-align: center;
  color: var(--text-secondary);
}

/* Gallery Grid */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.gallery-card {
  cursor: pointer;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  background: #FFFFFF !important;
  border: 1px solid rgba(0, 0, 0, 0.06) !important;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.04) !important;
  border-radius: 16px;
}

.gallery-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-yellow) !important;
  box-shadow: 0 12px 35px rgba(212, 175, 55, 0.15) !important;
}

.card-image-box {
  position: relative;
  width: 100%;
  padding-bottom: 66.66%; /* 3:2 Aspect Ratio */
  overflow: hidden;
  background-color: transparent !important;
}

.card-image-box img {
  position: absolute;
  top: 16px;
  left: 16px;
  width: calc(100% - 32px);
  height: calc(100% - 20px);
  object-fit: cover;
  border-radius: 12px;
  transition: transform var(--transition-slow);
}

.gallery-card:hover .card-image-box img {
  transform: scale(1.05);
}

.card-overlay {
  position: absolute;
  top: 16px;
  left: 16px;
  width: calc(100% - 32px);
  height: calc(100% - 20px);
  background: rgba(0, 0, 0, 0.45);
  border-radius: 12px;
  opacity: 0;
  transition: opacity var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-card:hover .card-overlay {
  opacity: 1;
}

.zoom-icon-box {
  background: rgba(10, 10, 10, 0.85);
  border: 1px solid rgba(255, 215, 0, 0.3);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--yellow-glow);
  transform: scale(0.8);
  transition: transform var(--transition-normal);
}

.gallery-card:hover .zoom-icon-box {
  transform: scale(1);
}

.card-badge-category {
  position: absolute;
  bottom: 12px;
  left: 24px;
  background: rgba(15, 15, 15, 0.85);
  border: 1px solid rgba(255, 215, 0, 0.2);
  color: var(--primary-yellow);
  padding: 4px 10px;
  border-radius: 4px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  z-index: 5;
}

.card-content-box {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-grow: 1;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.gallery-card h3 {
  font-size: 1.2rem;
  line-height: 1.4;
  color: var(--text-primary) !important;
  transition: color var(--transition-fast);
}

.gallery-card:hover h3 {
  color: var(--primary-yellow) !important;
}

.gallery-card p {
  color: var(--text-secondary) !important;
  font-size: 0.9rem;
  line-height: 1.5;
}

.gallery-card .card-meta span {
  color: var(--text-muted) !important;
}

/* Lightbox Modal */
/* ล็อกไม่ให้พื้นหลังเลื่อนขณะเปิดดูรูป */
body.modal-open {
  overflow: hidden;
}

.lightbox-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(5, 5, 5, 0.9);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.lightbox-content {
  position: relative;
  width: 100%;
  max-width: 950px;
  background: var(--card-bg);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 10px 50px rgba(0,0,0,0.8);
  border: 1px solid var(--card-border);
  animation: modalScaleUp 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes modalScaleUp {
  from { transform: scale(0.95); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.lightbox-close {
  position: absolute;
  top: 15px;
  right: 15px;
  background: rgba(15, 15, 15, 0.85);
  border: 1px solid var(--card-border);
  color: #ffffff;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition-fast);
}

.lightbox-close:hover {
  background: var(--primary-yellow);
  color: #000000;
  border-color: var(--primary-yellow);
  box-shadow: var(--yellow-glow);
}

.lightbox-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  min-height: 520px; /* ยืดสูงตามเนื้อหา ให้รูปกับกล่องข้อความสูงเท่ากันเสมอ */
}

.lightbox-image-box {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: #050505;
}

.lightbox-image-box img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lightbox-info-box {
  padding: 40px 30px;
  display: flex;
  flex-direction: column;
  gap: 15px;
  height: 100%;
  overflow-y: auto;
}

.lightbox-badge {
  background: rgba(255, 215, 0, 0.08);
  border: 1px solid rgba(255, 215, 0, 0.2);
  color: var(--primary-yellow);
  padding: 6px 14px;
  border-radius: 4px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.85rem;
  width: fit-content;
}

.lightbox-info-box h2 {
  font-size: 1.8rem;
  line-height: 1.3;
}

.lightbox-date {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.lightbox-divider {
  height: 1px;
  background-color: var(--card-border);
  margin: 5px 0;
}

.lightbox-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  flex-grow: 1;
}

.lightbox-footer {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contact-prompt {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
}

/* Mobile Responsiveness for Portfolio */
@media (max-width: 992px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .lightbox-grid {
    grid-template-columns: 1fr;
    min-height: 0;
    height: auto;
    max-height: 85vh;
    overflow-y: auto;
  }
  .lightbox-image-box {
    height: 250px;
  }
}

@media (max-width: 768px) {
  .portfolio-header-section h1 {
    font-size: 2.2rem;
  }
  .gallery-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Static/PHP adaptation: lightbox hidden until opened via JS --- */
.lightbox-modal { display: none; }
.lightbox-modal.open { display: flex; }