/* ============ ETSA Filtre — style.css ============ */
:root {
  --ink: #00111b;            /* koyu zemin (hero/footer) */
  --ink-2: #0a222c;
  --teal: #17696b;           /* ana marka rengi */
  --teal-dark: #10373c;
  --mint: #43cdb9;           /* vurgu */
  --bg: #ffffff;
  --bg-soft: #f2f6f6;
  --text: #24333a;
  --muted: #5b6b71;
  --line: #e3eaea;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(4, 34, 41, 0.08);
  --font: "Manrope", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
/* Mobilde yatay kaydırma boşluğunu engeller */
html, body { overflow-x: hidden; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { line-height: 1.2; color: inherit; }

.container { width: min(1160px, 92%); margin-inline: auto; }

/* ---------- Butonlar ---------- */
.btn {
  display: inline-block;
  padding: 0.85rem 1.7rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(135deg, var(--teal), #0f5254);
  color: #fff;
  box-shadow: 0 8px 20px rgba(23, 105, 107, 0.35);
}
.btn-primary:hover { box-shadow: 0 12px 26px rgba(23, 105, 107, 0.45); }
.btn-ghost {
  color: #eafffb;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
}
.btn-ghost:hover { border-color: var(--mint); color: var(--mint); }
.btn-sm { padding: 0.6rem 1.25rem; font-size: 0.88rem; }

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--teal);
  margin-bottom: 0.9rem;
}

main section[id] { scroll-margin-top: 7rem; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  padding: 0.9rem 0;
  transition: background 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}
.site-header.scrolled {
  /* backdrop-filter kullanılmıyor: üst öğede filter, içindeki fixed menünün
     konumlanmasını bozar (containing block değişir). */
  background: rgba(0, 17, 27, 0.96);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  padding: 0.6rem 0;
}
.header-inner { display: flex; align-items: center; gap: 2rem; }
.brand { display: flex; align-items: center; gap: 0.6rem; margin-right: auto; }
.brand-mark { height: 38px; width: auto; }
.brand-text {
  color: #fff;
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: 0.14em;
}
.brand-text em {
  font-style: normal;
  font-weight: 500;
  font-size: 0.8em;
  color: var(--mint);
  letter-spacing: 0.3em;
}
.site-nav { display: flex; gap: 1.6rem; }
.site-nav a {
  color: rgba(255, 255, 255, 0.82);
  font-weight: 600;
  font-size: 0.92rem;
  position: relative;
  padding: 0.2rem 0;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -3px;
  width: 0; height: 2px;
  background: var(--mint);
  transition: width 0.25s ease;
}
.site-nav a:hover, .site-nav a.active { color: #fff; }
.site-nav a:hover::after, .site-nav a.active::after { width: 100%; }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  width: 42px; height: 42px;
  border-radius: 10px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: #fff;
  transition: transform 0.25s ease, opacity 0.25s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(1200px 600px at 80% 10%, #07293a 0%, var(--ink) 55%);
  color: #fff;
  padding: 9.5rem 0 0;
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  align-items: center;
  gap: 2rem;
}
.hero .eyebrow { color: var(--mint); }
.hero h1 {
  font-size: clamp(2.2rem, 4.6vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}
.hero-tagline {
  color: var(--mint);
  font-weight: 700;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  margin-bottom: 1rem;
}
.hero-desc {
  color: rgba(255, 255, 255, 0.75);
  max-width: 48ch;
  margin-bottom: 2rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2.2rem; }
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  list-style: none;
  padding-bottom: 3rem;
}
.hero-badges li {
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: rgba(255, 255, 255, 0.85);
  border-radius: 999px;
  padding: 0.35rem 0.95rem;
  font-size: 0.82rem;
  font-weight: 600;
}
.hero-media { position: relative; align-self: end; }
.hero-media img { width: 100%; }
.hero-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--ink) 8%, rgba(0, 17, 27, 0.55) 26%, transparent 48%),
              linear-gradient(0deg, rgba(0, 17, 27, 0.55) 0%, transparent 25%);
  pointer-events: none;
}

/* ---------- Feature strip ---------- */
.feature-strip {
  background: var(--teal-dark);
  color: #fff;
  padding: 2.2rem 0;
}
.strip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.8rem;
}
.strip-item { display: flex; gap: 0.9rem; align-items: flex-start; }
.strip-item svg {
  flex: 0 0 34px;
  width: 34px; height: 34px;
  fill: var(--mint);
  stroke: var(--mint);
}
.strip-item h3 { font-size: 0.98rem; margin-bottom: 0.15rem; }
.strip-item p { font-size: 0.85rem; color: rgba(255, 255, 255, 0.7); }

/* ---------- Sections ---------- */
.section { padding: 5.5rem 0; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 640px; margin-bottom: 3rem; }
.section-head h2 {
  font-size: clamp(1.7rem, 3.2vw, 2.4rem);
  font-weight: 800;
  color: var(--teal-dark);
  margin-bottom: 0.9rem;
}
.section-head p { color: var(--muted); }

/* ---------- Ürün ---------- */
.product-grid {
  display: flex;
  gap: 1rem;
  padding-bottom: 1.1rem;
  margin-bottom: 2.5rem;
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior-inline: contain;
  scroll-snap-type: inline mandatory;
  scrollbar-color: var(--teal) var(--bg-soft);
}
.product-card {
  flex: 0 0 clamp(280px, 28vw, 360px);
  min-height: 445px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem;
  text-align: left;
  box-shadow: var(--shadow);
  scroll-snap-align: start;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.product-card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(4, 34, 41, 0.13); }
.product-photo {
  width: 100%;
  height: 180px;
  margin: 0 0 1.35rem;
  border-radius: 10px;
  overflow: hidden;
  border: 0;
  background: #fff;
}
.product-photo img { width: 100%; height: 100%; object-fit: contain; display: block; }
.product-card h3 { font-size: 1.12rem; color: var(--teal-dark); margin: 0 0 0.9rem; }
.product-card p { font-size: 0.92rem; color: var(--muted); }

.sizes-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  background: linear-gradient(135deg, var(--teal-dark), var(--teal));
  color: #fff;
  border-radius: var(--radius);
  padding: 2rem 2.4rem;
}
.sizes-head h3 { font-size: 1.25rem; margin-bottom: 0.3rem; }
.sizes-head p { color: rgba(255, 255, 255, 0.8); font-size: 0.92rem; max-width: 42ch; }
.sizes-list { display: flex; flex-wrap: wrap; gap: 0.7rem; list-style: none; }
.sizes-list li {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 10px;
  padding: 0.55rem 1.1rem;
  font-weight: 700;
  font-size: 0.95rem;
}
.sizes-list li.custom { background: var(--mint); border-color: var(--mint); color: var(--ink); }

/* ---------- Avantajlar ---------- */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
}
.adv-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.8rem 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease;
}
.adv-card:hover { transform: translateY(-5px); }
.adv-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: rgba(23, 105, 107, 0.1);
  display: grid;
  place-items: center;
  margin-bottom: 1.1rem;
  color: var(--teal);
}
.adv-icon svg { width: 26px; height: 26px; fill: currentColor; }
.adv-card h3 { font-size: 1.02rem; color: var(--teal-dark); margin-bottom: 0.45rem; }
.adv-card p { font-size: 0.9rem; color: var(--muted); }

/* ---------- Uyumlu markalar ---------- */
.brand-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
}
.brand-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.brand-card:hover { transform: translateY(-6px); box-shadow: 0 18px 40px rgba(4, 34, 41, 0.13); }
.brand-photo { aspect-ratio: 1 / 0.95; overflow: hidden; background: #fff; }
.brand-photo img { width: 100%; height: 100%; object-fit: contain; transition: transform 0.4s ease; }
.brand-card:hover .brand-photo img { transform: scale(1.02); }
.brand-body { padding: 1.3rem 1.4rem 1.6rem; }
.brand-body h3 { font-size: 1.08rem; color: var(--teal-dark); margin-bottom: 0.35rem; }
.brand-body p { font-size: 0.88rem; color: var(--muted); }
.brand-note {
  margin-top: 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
}

/* ---------- Üretim & Kalite (dark) ---------- */
.section-dark {
  background: linear-gradient(160deg, var(--ink) 0%, #06222e 100%);
  color: #fff;
}
.section-dark .section-head h2 { color: #fff; }
.section-dark .section-head p { color: rgba(255, 255, 255, 0.7); }
.section-dark .eyebrow { color: var(--mint); }

.process {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1.2rem;
  list-style: none;
  counter-reset: step;
  margin-bottom: 3rem;
}
.process li {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  padding: 1.3rem 1.1rem;
}
.process li span {
  display: inline-block;
  font-weight: 800;
  color: var(--mint);
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}
.process li h3 { font-size: 0.98rem; margin-bottom: 0.35rem; }
.process li p { font-size: 0.8rem; color: rgba(255, 255, 255, 0.65); }

.cert-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
}
.cert {
  border-left: 3px solid var(--mint);
  padding: 0.4rem 0 0.4rem 1.1rem;
}
.cert strong { display: block; font-size: 1rem; margin-bottom: 0.2rem; }
.cert span { font-size: 0.85rem; color: rgba(255, 255, 255, 0.65); }

/* ---------- Hakkımızda ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: start;
}
.about-copy h2 {
  font-size: clamp(1.7rem, 3.2vw, 2.4rem);
  font-weight: 800;
  color: var(--teal-dark);
  margin-bottom: 1rem;
}
.about-copy p { color: var(--muted); margin-bottom: 1rem; }
.about-goals {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem;
}
.about-goals h3 { color: var(--teal-dark); margin-bottom: 1.2rem; font-size: 1.15rem; }
.check-list { list-style: none; display: grid; gap: 0.85rem; }
.check-list li {
  position: relative;
  padding-left: 2rem;
  font-weight: 600;
  font-size: 0.95rem;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.18rem;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--teal);
  -webkit-mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill="black" d="M12 2a10 10 0 100 20 10 10 0 000-20zm-1.2 13.6L6.6 11.4l1.4-1.4 2.8 2.8 5.2-5.2 1.4 1.4-6.6 6.6z"/></svg>') center / contain no-repeat;
          mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill="black" d="M12 2a10 10 0 100 20 10 10 0 000-20zm-1.2 13.6L6.6 11.4l1.4-1.4 2.8 2.8 5.2-5.2 1.4 1.4-6.6 6.6z"/></svg>') center / contain no-repeat;
}

/* ---------- İletişim ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
  margin-bottom: 3rem;
}
.contact-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.7rem 1.5rem;
  box-shadow: var(--shadow);
}
.contact-card h3 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--teal);
  margin-bottom: 0.8rem;
}
.contact-card a {
  display: block;
  font-weight: 700;
  margin-bottom: 0.35rem;
  color: var(--text);
  transition: color 0.2s ease;
}
.contact-card a:hover { color: var(--teal); }
.contact-card p { font-size: 0.93rem; color: var(--muted); }
a.map-card {
  display: block;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
a.map-card:hover { transform: translateY(-4px); box-shadow: 0 16px 34px rgba(4, 34, 41, 0.14); }
.map-hint {
  display: inline-block;
  margin-top: 0.7rem;
  color: var(--teal);
  font-weight: 700;
  font-size: 0.84rem;
}
.map-hint::after { content: " ↗"; }
.contact-cta {
  text-align: center;
  background: linear-gradient(135deg, var(--teal-dark), var(--teal));
  border-radius: var(--radius);
  color: #fff;
  padding: 2.6rem 2rem;
}
.contact-cta p {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 1.4rem;
  color: rgba(255, 255, 255, 0.92);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: rgba(255, 255, 255, 0.75);
  padding: 4rem 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
}
.footer-brand img { width: 120px; margin-bottom: 1.2rem; }
.footer-brand p { font-size: 0.9rem; max-width: 34ch; }
.footer-col h4 {
  color: #fff;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 1rem;
}
.footer-col a {
  display: block;
  font-size: 0.92rem;
  margin-bottom: 0.5rem;
  transition: color 0.2s ease;
}
.footer-col a:hover { color: var(--mint); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.4rem 0;
  font-size: 0.83rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ---------- Reveal animasyonu ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .strip-grid, .adv-grid, .brand-grid, .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(3, 1fr); }
  .cert-row { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .site-nav {
    position: fixed;
    top: 0; right: 0;
    height: 100vh;
    width: min(320px, 80vw);
    background: var(--ink-2);
    flex-direction: column;
    padding: 6rem 2.2rem 2rem;
    gap: 1.4rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.4);
  }
  .site-nav.open { transform: translateX(0); }
  .site-nav a { font-size: 1.05rem; }
  .nav-toggle { display: flex; z-index: 110; }
  .header-cta { display: none; }
  .hero { padding-top: 7.5rem; }
  .hero-inner { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .hero-media { max-width: 520px; margin-inline: auto; }
  .about-grid { grid-template-columns: 1fr; gap: 2rem; }
  .product-grid { grid-template-columns: 1fr; }
  .sizes-box { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 560px) {
  .strip-grid, .adv-grid, .brand-grid, .contact-grid { grid-template-columns: 1fr; }
  .process { grid-template-columns: repeat(2, 1fr); }
  .cert-row { grid-template-columns: 1fr; }
  .section { padding: 4rem 0; }
}