*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy:      #011f45;
  --blue:      #024f98;
  --blue-mid:  #1a6bbf;
  --teal:      #1a6bbf;
  --sky:       #4ab3d4;
  --steel:     #6b8fa8;
  --smoke:     #cde5f0;
  --white:     #ffffff;
  --ink:       #0b1c30;
  --mid:       #3d5a78;
  --light:     #eaf4f9;
  --light-2:   #d6edf8;
  --green:     #1a7a4a;
  --ff-display: 'Nunito Sans', sans-serif;
  --ff-body:    'Source Sans 3', sans-serif;
}

html { scroll-behavior: smooth; }
body {
  background: #ffffff;
  color: var(--ink);
  font-family: var(--ff-body);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--light); }
::-webkit-scrollbar-thumb { background: var(--teal); border-radius: 2px; }

body::after {
  content: ''; position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='grain'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23grain)' opacity='1'/%3E%3C/svg%3E");
  opacity: 0.02; pointer-events: none; z-index: 9999;
}

/* ── NAVBAR ── */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(1,31,69,0.08);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 5vw; height: 72px; transition: box-shadow 0.3s;
}
.navbar.scrolled { box-shadow: 0 4px 32px rgba(1,31,69,0.08); }
.nav-logo img { height: 44px; width: auto; display: block; }
.nav-links { display: flex; align-items: center; gap: 2.5rem; list-style: none; }
.nav-links a {
  font-family: var(--ff-display); font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--mid); text-decoration: none; transition: color 0.2s;
}
.nav-links a:hover { color: var(--teal); }
.nav-links a:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; border-radius: 3px; }
.nav-cta { display: flex; align-items: center; gap: 1rem; }
.btn-outline {
  font-family: var(--ff-display); font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--teal);
  text-decoration: none; padding: 0.6rem 1.4rem;
  border: 1.5px solid rgba(26,107,191,0.35); border-radius: 6px;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.btn-outline:hover { background: var(--teal); color: #fff; border-color: var(--teal); }
.btn-outline:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; border-radius: 6px; }
.btn-primary {
  font-family: var(--ff-display); font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; color: #fff;
  text-decoration: none; padding: 0.65rem 1.5rem; background: var(--teal);
  border-radius: 6px; transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 4px 16px rgba(26,107,191,0.28);
}
.btn-primary:hover { background: var(--blue); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }
.btn-primary:focus-visible { outline: 2px solid var(--sky); outline-offset: 3px; border-radius: 6px; }

/* ── IMAGE VIEWER ── */
.image-wrap {
  display: flex; flex-direction: column; gap: 0.75rem;
  width: 100%;
}

.product-image-viewer {
  position: relative;
  background: #f4f6f8;
  border-radius: 14px;
  overflow: hidden;
  border: none;
  aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
}
.product-image-viewer img {
  width: 80%; height: 80%; object-fit: contain;
  transition: opacity 0.3s, transform 0.3s;
}
.product-image-viewer img.fade-out { opacity: 0; transform: scale(0.96); }

.image-numune-label {
  position: absolute; bottom: 0.6rem; left: 50%; transform: translateX(-50%);
  font-family: var(--ff-display); font-size: 0.58rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase;
  background: rgba(1,31,69,0.06); color: var(--steel);
  border: 1px solid rgba(1,31,69,0.08); border-radius: 100px;
  padding: 0.2rem 0.7rem; white-space: nowrap;
}

.image-thumbs {
  display: flex; gap: 0.5rem;
}
.image-thumb {
  width: 72px; height: 72px; flex-shrink: 0;
  background: #f4f6f8;
  border-radius: 10px;
  border: 2px solid transparent;
  overflow: hidden;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.image-thumb img { width: 86%; height: 86%; object-fit: contain; }
.image-thumb:hover { border-color: rgba(26,107,191,0.3); }
.image-thumb.active {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(26,107,191,0.12);
}
.image-thumb:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }

.img-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: none; border: none;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--navy);
  opacity: 0; pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 2; padding: 0.3rem;
}
.product-image-viewer:hover .img-nav { opacity: 1; pointer-events: all; }
.img-nav:hover { transform: translateY(-50%) scale(1.2); }
.img-nav:active { transform: translateY(-50%) scale(0.9); }
.img-nav:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; opacity: 1; pointer-events: all; border-radius: 4px; }
.img-nav svg { width: 20px; height: 20px; }
.img-nav-prev { left: 0.6rem; }
.img-nav-next { right: 0.6rem; }

/* ── BREADCRUMB ── */
.breadcrumb {
  padding: 100px 6vw 1.5rem;
  background: #ffffff;
}
.breadcrumb-inner {
  display: flex; align-items: center; gap: 0.4rem;
  font-family: var(--ff-display); font-size: 0.68rem; font-weight: 600;
  letter-spacing: 0.04em; text-transform: none;
}
.breadcrumb-inner a { color: var(--steel); text-decoration: none; transition: color 0.2s; }
.breadcrumb-inner a:hover { color: var(--navy); }
.breadcrumb-inner span { color: rgba(1,31,69,0.2); font-weight: 400; }
.breadcrumb-inner .current { color: var(--navy); font-weight: 700; }

/* ── PRODUCT SECTION ── */
.product-section {
  padding: 2rem 6vw 5rem;
  background: #ffffff;
}

.product-unified-card {
  background: #ffffff;
}

.product-top {
  display: grid;
  grid-template-columns: 40% 1fr;
}

.product-bottom {
  padding: 3rem 0 2.5rem;
}

.image-col {
  background: #ffffff;
  padding: 2rem 3rem 2rem 0;
  display: flex;
  align-items: flex-start;
}

.info-col {
  /* Sağ kenar boşluğu products.html'deki .product-card ile aynı (1.6rem) —
     sol taraf image-col'un sağ boşluğuyla birlikte sütunlar arası boşluğu oluşturuyor. */
  padding: 2.5rem 1.6rem 2rem 2.5rem;
  display: flex;
  flex-direction: column;
}
.product-tag {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--ff-display); font-size: 0.62rem; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--teal);
  margin-bottom: 1.2rem;
}
.product-tag::before { content: ''; width: 20px; height: 1px; background: var(--teal); }
.product-hero-name {
  font-family: var(--ff-display); font-size: clamp(2rem, 3.5vw, 3.2rem);
  font-weight: 800; line-height: 0.95; letter-spacing: -0.02em;
  color: var(--navy); margin-bottom: 1rem;
}

/* ── CERT CHIPS ── */
.cert-chips {
  display: flex; gap: 0.5rem; flex-wrap: wrap;
  margin-bottom: 0.5rem;
}
.cert-chip {
  position: relative;
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-family: var(--ff-display); font-size: 0.62rem; font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--mid);
  background: #f2f4f7;
  border-radius: 100px;
  padding: 0.3rem 0.75rem 0.3rem 0.55rem;
  cursor: default;
  transition: background 0.18s, color 0.18s;
}
.cert-chip:hover { background: #e8edf5; color: var(--navy); }
.cert-chip svg { width: 12px; height: 12px; flex-shrink: 0; opacity: 0.7; }

.cert-tooltip {
  position: absolute; top: calc(100% + 8px); left: 50%;
  transform: translateX(-50%) translateY(-4px);
  background: var(--navy);
  color: #fff;
  font-family: var(--ff-body); font-size: 0.72rem; font-weight: 400; line-height: 1.5;
  white-space: nowrap;
  padding: 0.5rem 0.85rem;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(1,31,69,0.18);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.18s, transform 0.18s;
  z-index: 10;
}
.cert-tooltip::after {
  content: '';
  position: absolute; bottom: 100%; left: 50%; transform: translateX(-50%);
  border: 5px solid transparent;
  border-bottom-color: var(--navy);
}
.cert-chip:hover .cert-tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
@media (max-width: 480px) {
  /* white-space:nowrap'li uzun tooltip metni, gorunmese bile (opacity:0)
     dar ekranlarda sayfanin (sabit navbar dahil) yatay tasmasina sebep
     oluyordu — mobilde sarmasina izin veriyoruz. */
  .cert-tooltip { white-space: normal; max-width: 220px; text-align: center; }
}
.product-hero-code {
  font-family: var(--ff-display); font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.2em; color: var(--steel); text-transform: uppercase;
}
.product-hero-badges {
  display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 1.6rem;
}
.sample-badge {
  font-family: var(--ff-display); font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.08em; padding: 0.3rem 0.85rem; border-radius: 100px;
}
.sb-idrar  { background: rgba(2,79,152,0.08); color: var(--blue-mid); border: 1px solid rgba(2,79,152,0.18); }
.sb-kati   { background: rgba(107,143,168,0.08); color: var(--steel); border: 1px solid rgba(107,143,168,0.2); }

.product-hero-stat {
  text-align: right;
}
.stat-label {
  font-family: var(--ff-display); font-size: 0.62rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--steel);
  margin-bottom: 0.3rem;
}
.stat-value {
  font-family: var(--ff-display); font-size: 2.2rem; font-weight: 800;
  color: var(--teal); line-height: 1;
}
.stat-unit { font-size: 0.9rem; font-weight: 400; color: var(--steel); }

/* ── MAIN CONTENT ── */
.product-layout {
  display: flex; flex-direction: column; gap: 0;
}
.info-stack {
  display: grid; grid-template-columns: 1fr 1fr; gap: 2rem;
}

/* ── NUMUNE SELECTOR ── */
.numune-card {
  margin-top: 2rem;
  padding-top: 1.5rem;
}
.numune-card-inner {
  display: grid; grid-template-columns: 40% 1fr; gap: 2rem; align-items: start;
}
.numune-label {
  font-family: var(--ff-display); font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--steel);
  margin-bottom: 1rem;
}
.numune-tabs {
  display: flex; gap: 0; margin-bottom: 1rem;
  background: var(--light); border-radius: 10px; padding: 4px;
  position: relative;
}
.numune-slider {
  position: absolute;
  background: #fff;
  border-radius: 7px;
  box-shadow: 0 2px 8px rgba(1,31,69,0.1);
  pointer-events: none; z-index: 0;
  transition: left 0.35s cubic-bezier(0.4, 0, 0.2, 1), width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.numune-tab {
  flex: 1; font-family: var(--ff-display); font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase;
  padding: 0.55rem 0.5rem; border-radius: 7px; border: none;
  cursor: pointer; color: var(--steel); background: transparent;
  position: relative; z-index: 1;
  transition: color 0.2s;
}
.numune-tab:hover { color: var(--teal); }
.numune-tab.active { color: var(--navy); }
.numune-tab:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; border-radius: 7px; }

.numune-tab.tab-disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: auto;
}
.numune-tab.tab-disabled:hover { color: var(--steel); }
.numune-tab.tab-disabled:focus-visible { outline: none; }
.numune-tab.tab-disabled::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--navy, #011f45);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: none;
  white-space: nowrap;
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
  z-index: 100;
}
.numune-tab.tab-disabled:hover::after { opacity: 1; }


.numune-specs {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1.8rem;
}
.spec-item { display: flex; flex-direction: column; gap: 0.2rem; }
.spec-item-label {
  font-family: var(--ff-display); font-size: 0.6rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--steel);
}
.spec-item-value {
  font-family: var(--ff-display); font-size: 0.92rem; font-weight: 700;
  color: var(--navy);
}

.price-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.2rem 0; background: transparent;
  border-radius: 0; margin-bottom: 1rem;
}
.price-label {
  font-family: var(--ff-display); font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--steel);
}
.price-value {
  font-family: var(--ff-display); font-size: 1.4rem; font-weight: 800;
  color: var(--navy);
}
.price-value.placeholder {
  font-size: 0.85rem; font-weight: 600;
  color: var(--steel); font-family: var(--ff-body);
  background: rgba(107,143,168,0.1); border: 1px dashed rgba(107,143,168,0.3);
  border-radius: 6px; padding: 0.3rem 0.8rem;
}

/* ── SEPETE EKLE ── */
.btn-sepete-ekle {
  display: flex; align-items: center; justify-content: center; gap: 0.5rem;
  width: 100%; font-family: var(--ff-display); font-size: 0.82rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: #fff; background: var(--navy); border: none; border-radius: 10px;
  padding: 0.9rem 1.5rem; cursor: pointer;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 4px 16px rgba(1,31,69,0.22);
  margin-top: 1.4rem;
  margin-bottom: 0.55rem;
}
.btn-sepete-ekle:hover { background: #013168; transform: translateY(-1px); box-shadow: 0 8px 24px rgba(1,31,69,0.3); }
.btn-sepete-ekle:active { transform: translateY(0); }
.btn-sepete-ekle:focus-visible { outline: 2px solid var(--sky); outline-offset: 3px; border-radius: 10px; }
.btn-sepete-ekle svg { width: 17px; height: 17px; flex-shrink: 0; }

.trust-line {
  display: flex; align-items: center; justify-content: center; gap: 0.4rem;
  font-family: var(--ff-body); font-size: 0.68rem; color: var(--steel);
  text-align: center; margin-bottom: 0.5rem;
}
.trust-line svg { width: 13px; height: 13px; flex-shrink: 0; color: var(--teal); }

.btn-teklif {
  display: flex; align-items: center; justify-content: center; gap: 0.5rem;
  width: 100%; font-family: var(--ff-display); font-size: 0.82rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: #fff; background: var(--teal); border: none; border-radius: 10px;
  padding: 0.9rem 1.5rem; cursor: pointer; text-decoration: none;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  box-shadow: 0 4px 16px rgba(26,107,191,0.3);
}
.btn-teklif.btn-teklif-secondary {
  background: transparent;
  color: var(--teal);
  border: 1.5px solid rgba(26,107,191,0.28);
  box-shadow: none;
}
.btn-teklif.btn-teklif-secondary:hover {
  background: rgba(26,107,191,0.06);
  transform: none;
  box-shadow: none;
}
.btn-teklif:hover { background: var(--blue); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(26,107,191,0.4); }
.btn-teklif:active { transform: translateY(0); }
.btn-teklif:focus-visible { outline: 2px solid var(--sky); outline-offset: 3px; border-radius: 10px; }
.btn-teklif svg { width: 15px; height: 15px; }

/* ── EK MALZEME ── */
.ek-malzeme-wrap {
  display: none;
  margin-top: 1rem;
}
.ek-malzeme-wrap.visible { display: block; }
.ek-malzeme-label {
  font-family: var(--ff-display); font-size: 0.6rem; font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--steel);
  margin-bottom: 0.6rem;
}

/* Add-on card */
.addon-card {
  display: flex; align-items: center; gap: 1rem;
  padding: 0.85rem 1rem;
  background: #f4f6f8;
  border: none;
  border-radius: 12px;
  transition: background 0.2s;
}
.addon-card.selected {
  background: #eaf0f8;
}
.addon-img {
  width: 52px; height: 52px; flex-shrink: 0;
  background: var(--light);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
.addon-img svg { width: 28px; height: 28px; color: var(--steel); }
.addon-body { flex: 1; min-width: 0; }
.addon-name {
  font-family: var(--ff-display); font-size: 0.85rem; font-weight: 700;
  color: var(--navy); line-height: 1.3;
}
.addon-desc {
  font-family: var(--ff-body); font-size: 0.75rem; color: var(--steel);
  margin-top: 0.18rem; line-height: 1.4;
}
.addon-right {
  display: flex; flex-direction: column; align-items: flex-end; gap: 0.5rem; flex-shrink: 0;
}
.addon-price {
  font-family: var(--ff-display); font-size: 0.88rem; font-weight: 800;
  color: var(--teal);
}
.addon-btn {
  font-family: var(--ff-display); font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.07em; text-transform: uppercase;
  border: 1.5px solid var(--teal); border-radius: 6px;
  padding: 0.35rem 0.85rem; cursor: pointer;
  background: transparent; color: var(--teal);
  transition: background 0.18s, color 0.18s, transform 0.12s;
  white-space: nowrap;
}
.addon-btn:hover { background: var(--teal); color: #fff; }
.addon-btn:active { transform: scale(0.96); }
.addon-btn.added { background: var(--teal); color: #fff; border-color: var(--teal); }
.addon-btn:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; border-radius: 6px; }

/* Addon adet seçici */
.addon-qty-row {
  display: flex; align-items: center; gap: 0.35rem;
  margin-top: 0.55rem;
}
.addon-qty-label {
  font-family: var(--ff-display); font-size: 0.65rem; font-weight: 600;
  letter-spacing: 0.08em; color: var(--steel); margin-right: 0.15rem;
}
.addon-qty-btn {
  font-family: var(--ff-display); font-size: 0.72rem; font-weight: 700;
  padding: 0.22rem 0.6rem; border-radius: 5px;
  border: 1.5px solid rgba(26,107,191,0.2);
  background: var(--light); color: var(--mid);
  cursor: pointer; transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.addon-qty-btn:hover { border-color: var(--teal); color: var(--teal); }
.addon-qty-btn.active {
  background: var(--teal); color: #fff; border-color: var(--teal);
}
.addon-qty-btn:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }

/* ── PAKET SEÇİCİ ── */
.paket-label {
  font-family: var(--ff-display); font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--steel);
  margin-bottom: 0.75rem;
}
.paket-options {
  display: flex; gap: 0; margin-bottom: 1.5rem;
  background: var(--light); border-radius: 10px; padding: 4px;
  position: relative;
}
.paket-slider {
  position: absolute;
  background: var(--teal);
  border-radius: 7px;
  box-shadow: 0 3px 12px rgba(26,107,191,0.25);
  pointer-events: none; z-index: 0;
  transition: left 0.35s cubic-bezier(0.4, 0, 0.2, 1), width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.paket-btn {
  flex: 1; font-family: var(--ff-display); font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.06em; padding: 0.55rem 0; border-radius: 7px;
  border: none; background: transparent;
  color: var(--mid); cursor: pointer;
  position: relative; z-index: 1;
  transition: color 0.2s;
}
.paket-btn:hover { color: var(--teal); }
.paket-btn.active { color: #fff; }
.paket-btn:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; }

/* ── BİLGİ KARTI (sekmeli) ── */
.detail-card-wrap {
  background: transparent;
  position: relative;
}

.detail-tabs {
  display: flex; gap: 0;
  padding: 0;
  background: transparent;
  position: relative;
}

.tab-slider {
  position: absolute;
  bottom: -1px;
  background: #fff;
  border-radius: 10px 10px 0 0;
  pointer-events: none;
  z-index: 0;
  transition: left 0.35s cubic-bezier(0.4, 0, 0.2, 1), width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.detail-tab {
  font-family: var(--ff-display); font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--steel);
  padding: 1rem 1.2rem;
  background: transparent;
  border: none; border-radius: 10px 10px 0 0;
  cursor: pointer; position: relative; z-index: 1;
  transition: color 0.2s;
}
.detail-tab:hover { color: var(--navy); }
.detail-tab.active { color: var(--navy); }
.detail-tab:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }

/* Sekme şeridinin kaydırılabilir olduğunu belirgin hale getiren ipucu —
   sağ kenarda solma + dürtünen ok ikonu, sona kadar kaydırılınca gizlenir
   (bkz. initDetailTabsScrollHint, tekli-panel.js). Yalnızca mobilde
   (.detail-tabs taştığında) görünür, bkz. @media (max-width: 768px). */
.detail-scroll-hint {
  display: none;
  position: absolute; top: 0; right: 0;
  width: 40px; pointer-events: none;
  align-items: center; justify-content: flex-end;
  padding-right: 2px;
  background: linear-gradient(to right, rgba(255,255,255,0), #fff 70%);
  opacity: 1; transition: opacity 0.25s ease;
  z-index: 2;
}
.detail-scroll-hint.is-hidden { opacity: 0; }
.detail-scroll-hint svg {
  width: 14px; height: 14px; color: var(--teal);
  animation: detailScrollNudge 1.4s ease-in-out infinite;
}
@keyframes detailScrollNudge {
  0%, 100% { transform: translateX(0); opacity: 0.5; }
  50%      { transform: translateX(4px); opacity: 1; }
}

.detail-card {
  background: #fff;
  border-radius: 0 10px 10px 10px;
  border: none;
  box-shadow: none;
  overflow: hidden;
  transition: height 0.38s cubic-bezier(0.4, 0, 0.2, 1);
}
.detail-panel { display: none; padding: 1.2rem 0 0.5rem; }
.detail-panel.active { display: block; animation: tabFadeIn 0.32s ease forwards; }

@keyframes tabFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.info-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.65rem 0; border-bottom: none; gap: 1rem;
}
.info-row:last-child { border-bottom: none; padding-bottom: 0; }
.info-row-label { font-size: 0.85rem; color: var(--steel); font-weight: 700; }
.info-row-value { font-family: var(--ff-display); font-size: 0.82rem; font-weight: 400; color: var(--navy); text-align: right; }

.cert-row { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 1.2rem; }
.cert-pill {
  font-family: var(--ff-display); font-size: 0.65rem; font-weight: 700;
  letter-spacing: 0.08em; color: var(--teal);
  background: rgba(26,107,191,0.08); border: 1px solid rgba(26,107,191,0.2);
  border-radius: 6px; padding: 0.25rem 0.65rem;
}
.cert-pill::before { content: '✓ '; }

.how-step {
  display: flex; gap: 1rem; align-items: flex-start;
  padding: 0.85rem 0; border-bottom: 1px solid var(--smoke);
}
.how-step:last-child { border-bottom: none; }
.how-step-num {
  width: 28px; height: 28px; border-radius: 50%; flex-shrink: 0;
  background: rgba(26,107,191,0.1); color: var(--teal);
  font-family: var(--ff-display); font-size: 0.72rem; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}
.how-step-text { font-size: 0.88rem; line-height: 1.7; color: var(--mid); font-weight: 300; padding-top: 0.3rem; }

.paket-icerik-list { display: flex; flex-direction: column; gap: 0.6rem; }
.paket-icerik-item {
  display: flex; align-items: center; gap: 0.7rem;
  font-size: 0.88rem; color: var(--mid); font-weight: 300;
}
.paket-icerik-item::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: var(--teal); flex-shrink: 0; opacity: 0.7;
}

/* ── VISUAL HOW-TO STEPS ── */
.how-steps-visual {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}
.how-step-card {
  background: #fff;
  border: 1px solid var(--smoke);
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  transition: box-shadow 0.25s, transform 0.2s, border-color 0.2s;
  display: flex; flex-direction: column;
}
.how-step-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--teal), var(--sky));
  border-radius: 3px 3px 0 0;
  opacity: 0; transition: opacity 0.25s;
}
.how-step-card:hover { box-shadow: 0 8px 28px rgba(1,31,69,0.1); transform: translateY(-2px); border-color: rgba(26,107,191,0.2); }
.how-step-card:hover::before { opacity: 1; }
.how-step-card-img {
  width: 100%;
  aspect-ratio: 1/1;
  background: linear-gradient(135deg, #f0f8fc 0%, #e2f1f9 100%);
  display: flex; align-items: center; justify-content: center;
  border-bottom: 1px solid var(--smoke);
  overflow: hidden;
}
.how-step-card-img img {
  width: 82%; height: 82%;
  object-fit: contain;
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
.how-step-card:hover .how-step-card-img img { transform: scale(1.06); }
.how-step-card-img-final {
  width: 100%;
  aspect-ratio: 1/1;
  background: linear-gradient(135deg, rgba(26,107,191,0.07) 0%, rgba(74,179,212,0.1) 100%);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--smoke);
}
.how-step-card-body { padding: 1rem 1.1rem 1.1rem; flex: 1; display: flex; flex-direction: column; gap: 0.45rem; }
.how-step-card-num {
  font-family: var(--ff-display);
  font-size: 0.55rem; font-weight: 800;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--teal); opacity: 0.7;
}
.how-step-card-timer {
  font-family: var(--ff-display); font-size: 1rem; font-weight: 800;
  color: var(--teal); line-height: 1;
}
.how-step-card-title {
  font-family: var(--ff-display); font-size: 0.82rem; font-weight: 700;
  color: var(--navy); line-height: 1.3;
}
.how-step-card-label {
  font-size: 0.78rem; line-height: 1.65; color: var(--mid); font-weight: 300; flex: 1;
}
.how-step-card-warning {
  margin-top: 0.4rem;
  padding: 0.45rem 0.65rem;
  background: var(--yellow-bg); border-radius: 6px;
  font-size: 0.72rem; color: var(--yellow); line-height: 1.45; font-weight: 500;
}

/* ── FINAL STEP CARD ── */
.how-step-card-final { border: 1px solid var(--smoke); }
@media (max-width: 768px) {
  .how-steps-visual { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 480px) {
  .how-steps-visual { grid-template-columns: repeat(2, 1fr); }
}

/* ── SONUÇ GÖRSELİ ZOOM ── */
.result-img-wrap {
  display: flex; justify-content: center;
  cursor: zoom-in;
}
.result-img-wrap img {
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s;
  border-radius: 8px;
}
.result-img-wrap:hover img {
  transform: scale(2.2);
  box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  z-index: 10;
  position: relative;
}

/* ── SONUÇ YORUMLAMA ── */
.result-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.result-card {
  border-radius: 14px;
  padding: 1.4rem 1.2rem 1.2rem;
  display: flex; flex-direction: column; gap: 1rem;
}
.result-card.negative { background: #f0faf4; }
.result-card.positive { background: #fff5f4; }
.result-card.invalid  { background: #f5f5f7; }

.result-badge {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: var(--ff-display); font-size: 0.65rem; font-weight: 800;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.25rem 0.7rem; border-radius: 100px; width: fit-content;
}
.result-badge.neg { background: #d1f5e0; color: #1a6b3c; }
.result-badge.pos { background: #fdd9d6; color: #c0392b; }
.result-badge.inv { background: #e4e4ea; color: #5a5a72; }

.result-bands {
  display: flex; flex-direction: column; gap: 0.45rem;
  padding: 0.9rem 1rem;
  background: #fff;
  border-radius: 10px;
}
.band-row {
  display: flex; align-items: center; gap: 0.6rem;
  font-family: var(--ff-display); font-size: 0.62rem; font-weight: 700;
  letter-spacing: 0.08em; color: var(--steel);
}
.band-line {
  height: 4px; flex: 1; border-radius: 2px;
}
.band-line.visible-c   { background: var(--teal); }
.band-line.visible-t   { background: var(--teal); }
.band-line.absent      { background: #e0e0e8; }
.band-label { width: 10px; text-align: center; font-size: 0.65rem; }

.result-title {
  font-family: var(--ff-display); font-size: 0.88rem; font-weight: 800;
  color: var(--navy); line-height: 1.3;
}
.result-desc {
  font-family: var(--ff-body); font-size: 0.8rem; font-weight: 300;
  color: var(--mid); line-height: 1.6;
}
.result-note {
  display: flex; align-items: flex-start; gap: 0.4rem;
  font-family: var(--ff-display); font-size: 0.62rem; font-weight: 700;
  color: #c0392b; line-height: 1.5;
  background: #fff0ef; border-radius: 7px; padding: 0.5rem 0.7rem;
}
@media (max-width: 768px) {
  .result-cards { grid-template-columns: 1fr; }
}
@media (max-width: 1010px) {
  .how-step-card,
  .result-card { display: none; }
}

/* ── FOOTER ── */
footer {
  background:
    radial-gradient(ellipse 65% 55% at 8% 100%, rgba(26,107,191,.14) 0%, transparent 58%),
    radial-gradient(ellipse 55% 65% at 92% 0%, rgba(74,179,212,.09) 0%, transparent 55%),
    linear-gradient(160deg, #011f45 0%, #012a5e 55%, #011f45 100%);
  padding: 5rem 6vw 3rem;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 4rem; padding-bottom: 4rem; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-logo { margin-bottom: 1.4rem; }
.footer-logo img { height: 38px; width: auto; }
.footer-tagline { font-size: 0.86rem; color: rgba(255,255,255,0.38); line-height: 1.7; font-weight: 300; max-width: 280px; margin-bottom: 2rem; }
.footer-socials { display: flex; gap: 0.75rem; }
.footer-social { width: 36px; height: 36px; border-radius: 8px; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.08); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.4); text-decoration: none; transition: background 0.2s, color 0.2s, border-color 0.2s; }
.footer-social:hover { background: rgba(26,107,191,0.2); color: var(--sky); border-color: rgba(26,107,191,0.35); }
.footer-social:focus-visible { outline: 2px solid var(--sky); outline-offset: 3px; border-radius: 8px; }
.footer-social svg { width: 16px; height: 16px; }
.footer-col-title { font-family: var(--ff-display); font-size: 0.65rem; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; color: rgba(255,255,255,0.28); margin-bottom: 1.4rem; }
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 0.75rem; }
.footer-links a { font-size: 0.86rem; color: rgba(255,255,255,0.45); text-decoration: none; font-weight: 300; transition: color 0.2s; }
.footer-links a:hover { color: #fff; }
.footer-links a:focus-visible { outline: 2px solid var(--sky); outline-offset: 3px; border-radius: 3px; }
.footer-bottom { padding-top: 2.5rem; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.footer-copy { font-size: 0.75rem; color: rgba(255,255,255,0.22); font-weight: 300; }
.footer-legal { display: flex; gap: 2rem; }
.footer-legal a { font-size: 0.75rem; color: rgba(255,255,255,0.22); text-decoration: none; font-weight: 300; transition: color 0.2s; }
.footer-legal a:hover { color: rgba(255,255,255,0.6); }

/* ── ANIMATIONS ── */
@keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
.product-tag  { opacity: 0; animation: fadeUp 0.5s 0.1s forwards; }
.product-hero-name { opacity: 0; animation: fadeUp 0.6s 0.2s forwards; }
.product-hero-code { opacity: 0; animation: fadeUp 0.6s 0.3s forwards; }
.product-hero-badges { opacity: 0; animation: fadeUp 0.6s 0.4s forwards; }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .product-top { grid-template-columns: 45% 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-links { display: none; }

  /* Mobilde breadcrumb'tan "Ana Sayfa" kaldırılıyor — dar ekranda yer
     kazanmak için (logo zaten ana sayfaya dönüşü sağlıyor), "Ürünler"
     ve mevcut ürün adı kalıyor. */
  .breadcrumb-inner > a:first-child,
  .breadcrumb-inner > a:first-child + span { display: none; }

  /* product-top tek sütuna düşüyor. Varsayılan "1fr" track'i içerikteki
     en geniş min-content'e göre büyüyüp sayfayı yatay taşırabiliyordu;
     minmax(0,1fr) track'in viewport'a sığacak şekilde küçülmesini sağlar. */
  .product-top { grid-template-columns: minmax(0, 1fr); padding: 0; }
  .image-col { padding: 1.5rem 0 0; order: 4; }

  /* info-col'un kendi kutusu kaldırılıyor (display:contents) ki içindeki
     elemanlar product-top'un doğrudan öğeleri olarak "order" ile yeniden
     dizilebilsin: product-tag → product-hero-name → cert-chips → (görsel)
     → urun-aciklama → geri kalanı (eskisi gibi). */
  .info-col { display: contents; }
  .info-col > * { order: 6; }
  .product-tag       { order: 1; }
  .product-hero-name { order: 2; }
  .cert-chips         { order: 3; }
  #urun-aciklama       { order: 5; }

  /* .numune-tab / .paket-btn flex:1 olunca varsayılan min-width:auto
     içerik genişliğinin altına küçülemiyor, dar ekranlarda sayfayı yatay
     taşırıyordu. */
  .numune-tab { min-width: 0; }
  .paket-btn  { min-width: 0; }

  /* Devre dışı numune sekmesinin (Ağız Sıvısı/Katı Madde) ::after tooltip'i
     white-space:nowrap olduğundan sekme satırının dışına taşıp sayfayı
     yatay kaydırıyordu (bkz. .cert-tooltip için yukarıdaki aynı sorun).
     Bu kural .numune-tab.tab-disabled::after tanımından SONRA gelmeli ki
     kazansın. */
  .numune-tab.tab-disabled::after { white-space: normal; width: max-content; max-width: min(85vw, 260px); text-align: center; line-height: 1.3; }

  /* Ek malzeme adet seçici satırı (Adet: 1/5/10) sabit genişlikte kalıp
     sayfayı yatay taşırıyordu — dar ekranlarda satıra sarmasına izin ver. */
  .addon-qty-row { flex-wrap: wrap; }

  .product-bottom { padding: 1.5rem 0; }
  .info-stack { grid-template-columns: 1fr; }
  .product-section { padding: 1.5rem 5vw 4rem; }
  .numune-specs { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-legal { justify-content: center; }

  /* .detail-tabs 4 sekmeyi (Ürün Bilgileri/Nasıl Kullanılır?/Sonuç
     Yorumlama/Paket İçeriği) tek satırda tutmaya çalışıyor, dar
     ekranlarda sığmıyor ve sayfayı (sabit navbar dahil) yatay olarak
     taşırıyordu. Sekme şeridini kaydırılabilir yapıyoruz — scrollbar
     artık gizlenmiyor (markalı/ince halde gösteriliyor); kullanıcılar
     şeridin kaydırılabilir olduğunu fark etmiyordu. Dokunmatik
     tarayıcılarda native scrollbar dinlenme halinde görünmediğinden,
     sağ kenarda solma + ok ipucu (.detail-scroll-hint) ile destekleniyor. */
  .detail-tabs {
    overflow-x: auto; -webkit-overflow-scrolling: touch;
    scrollbar-width: thin; scrollbar-color: var(--teal) var(--light);
  }
  .detail-tabs::-webkit-scrollbar { height: 4px; }
  .detail-tabs::-webkit-scrollbar-track { background: var(--light); border-radius: 2px; }
  .detail-tabs::-webkit-scrollbar-thumb { background: var(--teal); border-radius: 2px; }
  .detail-tab { flex-shrink: 0; padding: 0.85rem 0.9rem; font-size: 0.6rem; }
  .detail-scroll-hint { display: flex; }
}