/* ==========================================================================
   DENTALINS — GALLERY PAGE (gallery.css)
   2 bölüm: Vakalar (Before/After) + Klinik Galerisi, Lightbox overlay.
   BEM: .cases-section  .ba-card  .clinic-section  .clinic-grid
        .gallery-lightbox
   ========================================================================== */


/* -----------------------------------------------------------------------
   1. CASES SECTION — Önce / Sonra Vakalar
   ----------------------------------------------------------------------- */

.ba-section {
  background: var(--color-secondary-900);
  padding: var(--space-20) 0;
  position: relative;
  overflow: hidden;
}

/* Dekoratif arka plan deseni */
.ba-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(5, 160, 214, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(5, 160, 214, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.ba-section::after {
  content: '';
  position: absolute;
  top: -120px; right: -120px;
  width: 480px; height: 480px;
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(5, 160, 214, 0.10) 0%, transparent 65%);
  pointer-events: none;
}

.ba-section__header {
  text-align: center;
  margin-bottom: var(--space-12);
  position: relative;
  z-index: 1;
}

.ba-section__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  background: rgba(5, 160, 214, 0.10);
  border: 1px solid rgba(5, 160, 214, 0.22);
  color: var(--color-primary-300);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  margin-bottom: var(--space-4);
}

.ba-section__title {
  font-size: var(--text-4xl);
  font-weight: var(--weight-extrabold);
  color: var(--color-neutral-0);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-3);
}

.ba-section__title span {
  background: linear-gradient(135deg, var(--color-primary-300) 0%, var(--color-primary-500) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.ba-section__subtitle {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.50);
  max-width: 460px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

/* Before/After Grid */
.ba-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  position: relative;
  z-index: 1;
}

@media (max-width: 1023px) {
  .ba-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 639px) {
  .ba-grid { grid-template-columns: 1fr; }
  .ba-section__title { font-size: var(--text-3xl); }
}

/* BA Card */
.ba-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-secondary-800);
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: var(--shadow-secondary-lg);
  transition:
    transform var(--transition-hover),
    box-shadow var(--transition-hover),
    border-color var(--transition-fast);
}

.ba-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 48px rgba(0,0,0,0.35), var(--shadow-primary-xs);
  border-color: rgba(5, 160, 214, 0.18);
}

/* Slider wrapper — clip trick ile öncesi/sonrası yan yana */
.ba-card__slider {
  position: relative;
  height: 260px;
  overflow: hidden;
  cursor: col-resize;
  user-select: none;
}

.ba-card__before,
.ba-card__after {
  position: absolute;
  inset: 0;
}

.ba-card__before img,
.ba-card__after img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  pointer-events: none;
}

/* "Önce" görsel — clip-path ile sağdan kırpılır */
.ba-card__before {
  clip-path: inset(0 50% 0 0);
  z-index: 1;
}

.ba-card__after {
  z-index: 0;
}

/* Ayırıcı çizgi */
.ba-card__divider {
  position: absolute;
  top: 0; bottom: 0;
  left: 50%;
  width: 3px;
  background: var(--color-neutral-0);
  box-shadow: 0 0 8px rgba(0,0,0,0.3);
  z-index: 3;
  transform: translateX(-50%);
  pointer-events: none;
}

/* Dairesel tutaç */
.ba-card__handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--color-neutral-0);
  border: 3px solid var(--color-primary-500);
  box-shadow: var(--shadow-lg);
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  color: var(--color-primary-500);
  transition: transform var(--transition-normal);
}

.ba-card__slider:hover .ba-card__handle,
.ba-card__slider:active .ba-card__handle {
  transform: translate(-50%, -50%) scale(1.12);
}

.ba-card__handle-icon {
  display: flex;
  align-items: center;
  gap: 2px;
  color: var(--color-primary-500);
}

.ba-card__handle-icon svg {
  width: 14px;
  height: 14px;
}

/* Gizli range input — pürüzsüz sürükleme için */
.ba-card__range {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 6;
  opacity: 0;
  cursor: col-resize;
  margin: 0;
  padding: 0;
  -webkit-appearance: none;
  appearance: none;
}

.ba-card__range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 1px;
  height: 100%;
}

.ba-card__range::-moz-range-thumb {
  width: 1px;
  height: 100%;
  border: none;
  background: transparent;
}

.ba-card__range:focus-visible ~ .ba-card__handle {
  outline: 3px solid var(--color-primary-300);
  outline-offset: 3px;
}

/* Etiketler — önce/sonra */
.ba-card__label {
  position: absolute;
  top: var(--space-3);
  z-index: 5;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  pointer-events: none;
}

.ba-card__label--before {
  left: var(--space-3);
  background: rgba(11, 29, 58, 0.7);
  color: rgba(255,255,255,0.80);
  border: 1px solid rgba(255,255,255,0.15);
}

.ba-card__label--after {
  right: var(--space-3);
  background: var(--color-neutral-0);
  color: var(--color-primary-500);
  border: 1px solid rgba(255,255,255,0.9);
}

/* BA Card bilgi alanı */
.ba-card__info {
  padding: var(--space-4) var(--space-5) var(--space-5);
}

.ba-card__treatment {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-primary-400);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-1);
}

.ba-card__desc {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  line-height: var(--leading-normal);
}

/* Vaka numarası etiketi (sol alt köşe, slider üstünde) */
.ba-card__case-num {
  position: absolute;
  bottom: var(--space-3);
  left: var(--space-3);
  z-index: 5;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(11, 29, 58, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--color-neutral-0);
  font-size: 11px;
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-wide);
  backdrop-filter: blur(6px);
  pointer-events: none;
}


/* -----------------------------------------------------------------------
   2. CLINIC GALLERY SECTION — Mekan & Klinik Fotoğrafları
   ----------------------------------------------------------------------- */

.clinic-section {
  background: var(--color-bg-secondary);
  padding: var(--space-20) 0 var(--space-24);
  position: relative;
}

.clinic-section__header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.clinic-section__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  background: rgba(5, 160, 214, 0.08);
  border: 1px solid rgba(5, 160, 214, 0.16);
  color: var(--color-primary-500);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  margin-bottom: var(--space-4);
}

.clinic-section__title {
  font-size: var(--text-4xl);
  font-weight: var(--weight-extrabold);
  color: var(--color-secondary-500);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-3);
}

.clinic-section__title span {
  color: var(--color-primary-500);
}

.clinic-section__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  max-width: 500px;
  margin: 0 auto;
  line-height: var(--leading-relaxed);
}

@media (max-width: 639px) {
  .clinic-section { padding: var(--space-14) 0 var(--space-16); }
  .clinic-section__title { font-size: var(--text-3xl); }
  .clinic-section__header { margin-bottom: var(--space-8); }
}

/* Clinic Grid — flex wrapper for row-groups */
.clinic-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Each group is its own 3-col grid */
.clinic-grid__group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 280px;
  gap: var(--space-4);
}

.clinic-grid__item--hero {
  grid-column: span 2;
  grid-row: span 2;
}

/* Reverse group — hero sağda, explicit row ile küçükleri col-1'e zorla */
.clinic-grid__group--reverse .clinic-grid__item--hero {
  grid-column: 2 / 4;
  grid-row: 1 / 3;
}

.clinic-grid__item--tall {
  grid-row: span 2;
}

@media (max-width: 1023px) {
  .clinic-grid__group {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 240px;
    gap: var(--space-3);
  }
  .clinic-grid__item--hero { grid-column: span 2; grid-row: span 1; }
  .clinic-grid__group--reverse .clinic-grid__item--hero { grid-column: span 2; grid-row: auto; }
  .clinic-grid__item--tall { grid-row: span 1; }
}

@media (max-width: 639px) {
  .clinic-grid__group {
    grid-template-columns: 1fr;
    grid-auto-rows: 220px;
    gap: var(--space-3);
  }
  .clinic-grid__item--hero { grid-column: span 1; }
  .clinic-grid__group--reverse .clinic-grid__item--hero {
    grid-column: span 1;
    grid-row: auto;
  }
}

/* Clinic Grid Item */
.clinic-grid__item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  background: var(--color-secondary-900);
}

.clinic-grid__item img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.5s var(--ease-smooth);
}

.clinic-grid__item:hover img {
  transform: scale(1.05);
}

/* Alt gradient overlay */
.clinic-grid__item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(5, 13, 30, 0.70) 0%,
    rgba(5, 13, 30, 0.15) 45%,
    transparent 100%
  );
  z-index: 1;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.clinic-grid__item:hover::after {
  opacity: 0.9;
}

/* Badge (sol üst) */
.clinic-grid__badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 3;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(5, 13, 30, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.85);
  font-size: 10px;
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  backdrop-filter: blur(6px);
  transition: opacity 0.3s ease;
}

/* Fotoğraf başlığı (altta) */
.clinic-grid__caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2;
  padding: var(--space-4) var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.clinic-grid__title {
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--color-neutral-0);
  line-height: var(--leading-tight);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}

.clinic-grid__item--hero .clinic-grid__title {
  font-size: var(--text-lg);
}

/* Expand icon */
.clinic-grid__expand {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.20);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.75);
  cursor: pointer;
  flex-shrink: 0;
  opacity: 0;
  transform: scale(0.85);
  transition:
    opacity 0.3s ease,
    transform 0.3s ease,
    background 0.2s ease;
  backdrop-filter: blur(6px);
}

.clinic-grid__item:hover .clinic-grid__expand {
  opacity: 1;
  transform: scale(1);
}

.clinic-grid__expand:hover {
  background: var(--color-primary-500);
  border-color: var(--color-primary-400);
  color: var(--color-neutral-0);
}


/* -----------------------------------------------------------------------
   3. CTA STRIP — galeri alt çağrı bandı
   ----------------------------------------------------------------------- */

.gallery-cta {
  background: var(--color-bg-secondary);
  padding: var(--space-14) 0;
  border-top: 1px solid var(--color-neutral-200);
  border-bottom: 1px solid var(--color-neutral-200);
  position: relative;
  overflow: hidden;
}

.gallery-cta::before {
  content: '';
  position: absolute;
  bottom: -60px; left: -60px;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(5, 160, 214, 0.06) 0%, transparent 65%);
  pointer-events: none;
}

.gallery-cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.gallery-cta__eyebrow {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-primary-500);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  margin-bottom: var(--space-2);
}

.gallery-cta__title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-extrabold);
  color: var(--color-secondary-500);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-2);
}

.gallery-cta__sub {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 440px;
}

.gallery-cta__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  flex-wrap: wrap;
}

@media (max-width: 767px) {
  .gallery-cta__inner { flex-direction: column; align-items: flex-start; }
  .gallery-cta__title { font-size: var(--text-2xl); }
}


/* -----------------------------------------------------------------------
   10. LIGHTBOX OVERLAY
   ----------------------------------------------------------------------- */

.gallery-lightbox {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);

  /* Başlangıç: görünmez */
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-smooth);
}

.gallery-lightbox.is-open {
  opacity: 1;
  pointer-events: auto;
  z-index: 10000;
}

/* Koyu backdrop */
.gallery-lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 9, 22, 0.94);
  cursor: pointer;
}

/* İçerik sarmalayıcı */
.gallery-lightbox__content {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transform: scale(0.96) translateY(16px);
  transition: transform var(--duration-normal) var(--ease-out-expo);
}

.gallery-lightbox.is-open .gallery-lightbox__content {
  transform: scale(1) translateY(0);
}

/* Üst bar */
.gallery-lightbox__topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.gallery-lightbox__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.gallery-lightbox__cat {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(5, 160, 214, 0.18);
  border: 1px solid rgba(5, 160, 214, 0.30);
  color: var(--color-primary-300);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.gallery-lightbox__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-neutral-0);
}

/* Kapat butonu */
.gallery-lightbox__close {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  color: rgba(255,255,255,0.80);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    border-color var(--transition-fast);
}

.gallery-lightbox__close:hover {
  background: rgba(255,255,255,0.16);
  color: var(--color-neutral-0);
  border-color: rgba(255,255,255,0.28);
}

/* Ana görsel */
.gallery-lightbox__img-wrap {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-secondary-900);
  max-height: 70vh;
}

.gallery-lightbox__img {
  display: block;
  width: 100%;
  height: 100%;
  max-height: 70vh;
  object-fit: contain;
}

/* Prev / Next oklarını */
.gallery-lightbox__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.20);
  color: rgba(255,255,255,0.80);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 2;
  backdrop-filter: blur(8px);
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-hover);
}

.gallery-lightbox__arrow:hover {
  background: var(--color-primary-500);
  border-color: var(--color-primary-400);
  color: var(--color-neutral-0);
  box-shadow: var(--shadow-primary);
}

.gallery-lightbox__arrow--prev {
  left: var(--space-4);
}

.gallery-lightbox__arrow--next {
  right: var(--space-4);
}

/* Alt counter */
.gallery-lightbox__counter {
  text-align: center;
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.40);
  letter-spacing: var(--tracking-wider);
}

/* Thumbnail strip */
.gallery-lightbox__thumbs {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  scrollbar-width: none;
  justify-content: center;
  padding: var(--space-1) 0;
}

.gallery-lightbox__thumbs::-webkit-scrollbar { display: none; }

.gallery-lightbox__thumb {
  width: 56px;
  height: 40px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid transparent;
  flex-shrink: 0;
  cursor: pointer;
  transition: border-color var(--transition-fast), opacity var(--transition-fast);
  opacity: 0.55;
}

.gallery-lightbox__thumb.is-active {
  border-color: var(--color-primary-400);
  opacity: 1;
}

.gallery-lightbox__thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 639px) {
  .gallery-lightbox { padding: var(--space-3); }
  .gallery-lightbox__arrow {
    width: 36px;
    height: 36px;
  }
  .gallery-lightbox__arrow--prev { left: var(--space-2); }
  .gallery-lightbox__arrow--next { right: var(--space-2); }
  .gallery-lightbox__arrow svg {
    width: 16px;
    height: 16px;
  }
  .gallery-lightbox__thumbs { display: none; }
  .gallery-lightbox__img { max-height: 55vh; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .ba-card__img,
  .clinic-grid__img,
  .gallery-lightbox__stage,
  .gallery-lightbox__img {
    transition: none;
  }

  .gallery-lightbox__arrow {
    transition: none;
  }
}