/* ==========================================================================
   Uzunoğlu Su — ortak tasarım sistemi (main.css)
   --------------------------------------------------------------------------
   PALET (logodan türetildi)
   Logo harfleri ortada parlak maviden kenarlarda koyu çivit rengine giden
   radyal bir gradyan; damla ve dalga aynı ailede. Mineral beyazı = berraklık.
     --c-ink      #0B0F33  en koyu çivit (zemin, gövde metni)   = #383487 koyulaştırılmış
     --c-abyss    #141B52  derin su (koyu bölümler)
     --c-indigo   #383487  logonun ana çividi (opak piksellerin ~%60'ı)
     --c-royal    #244997  orta kraliyet mavisi
     --c-blue     #1E67B2  su mavisi
     --c-cyan     #1577C0  gradyan merkezi / damla (en parlak ton)
     --c-ice      #9FD4F5  kırılan ışık vurgusu (sadece ince detay)
     --c-glacier  #DCE8F4  buzul (açık zemin ikinci ton)
     --c-mist     #EDF2F8  sis
     --c-mineral  #F6F8FB  mineral beyazı (ana açık zemin)
     --c-white    #FEFEFE  logodaki beyaz hale
   KURAL: mor/pembe gradyan yok. Koyu bölümler çivit→su mavisi; vurgu her zaman
   --c-cyan veya --c-ice. Yeşil yalnızca WhatsApp ikon noktası.

   TİPOGRAFİ
     --f-display  Fraunces (değişken, opsz 9–144) — büyük, kendinden emin başlıklar,
                  italik vurgular (<em>).
     --f-sans     Manrope — gövde, arayüz, düğmeler.
     --f-mono     IBM Plex Mono — etiketler, analiz değerleri, sayaçlar.
   ÖLÇEK (akışkan, clamp)
     --fs-mega  3.4rem → 10.5rem   hero tek kelime / dev rakamlar
     --fs-1     2.6rem → 5.6rem    sayfa başlığı (h1)
     --fs-2     2.0rem → 3.75rem   bölüm başlığı (h2)
     --fs-3     1.4rem → 2.1rem    alt başlık (h3)
     --fs-4     1.2rem             kart başlığı
     --fs-body  1.0625rem          gövde
     --fs-small 0.875rem           yardımcı metin
     --fs-micro 0.72rem            mono etiketler (büyük harf, aralıklı)
   ========================================================================== */

:root {
  /* Renk */
  --c-ink: #0B0F33;
  --c-abyss: #141B52;
  --c-indigo: #383487;
  --c-royal: #244997;
  --c-blue: #1E67B2;
  --c-cyan: #1577C0;
  --c-ice: #9FD4F5;
  --c-glacier: #DCE8F4;
  --c-mist: #EDF2F8;
  --c-mineral: #F6F8FB;
  --c-white: #FEFEFE;
  --c-wa: #25D366;

  --c-text: #10153A;
  --c-muted: #535A7C;
  --c-text-inv: #F2F6FC;
  --c-muted-inv: rgba(226, 236, 250, .72);
  --c-line: rgba(16, 21, 58, .12);
  --c-line-strong: rgba(16, 21, 58, .24);
  --c-line-inv: rgba(226, 236, 250, .16);

  --g-water: linear-gradient(180deg, #1577C0 0%, #1E67B2 28%, #244997 62%, #383487 100%);
  --g-deep: linear-gradient(180deg, #141B52 0%, #0B0F33 100%);
  --g-glacier: linear-gradient(180deg, #F6F8FB 0%, #DCE8F4 100%);

  /* Tipografi */
  --f-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --f-sans: "Manrope", "Segoe UI", system-ui, -apple-system, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  --fs-mega: clamp(3.4rem, 11.5vw, 10.5rem);
  --fs-1: clamp(2.6rem, 6.2vw, 5.6rem);
  --fs-2: clamp(2rem, 4.4vw, 3.75rem);
  --fs-3: clamp(1.4rem, 2.4vw, 2.1rem);
  --fs-4: 1.2rem;
  --fs-body: 1.0625rem;
  --fs-small: .875rem;
  --fs-micro: .72rem;

  /* Ölçü */
  --gutter: clamp(16px, 4vw, 56px);
  --wrap: 1360px;
  --wrap-narrow: 880px;
  --section-y: clamp(5rem, 11vw, 10rem);
  --header-h: 76px;
  --r-xs: 4px;
  --r-s: 8px;
  --r-m: 16px;
  --r-pill: 999px;

  /* Hareket */
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --ease-liquid: cubic-bezier(.65, 0, .35, 1);
  --dur: .5s;

  /* Katmanlar */
  --z-header: 50;
  --z-menu: 60;
  --z-drawer: 80;
  --z-toast: 85;
  --z-grain: 90;
  --z-transition: 100;

  --shadow-soft: 0 1px 2px rgba(11, 15, 51, .06), 0 12px 40px -12px rgba(11, 15, 51, .18);
  --shadow-lift: 0 2px 4px rgba(11, 15, 51, .08), 0 30px 60px -20px rgba(20, 27, 82, .35);
}

@media (max-width: 760px) {
  :root { --header-h: 64px; }
}

/* --------------------------------------------------------------------------
   Temel
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 16px);
}
body {
  margin: 0;
  background: var(--c-mineral);
  color: var(--c-text);
  font-family: var(--f-sans);
  font-size: var(--fs-body);
  line-height: 1.6;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
@supports (overflow: clip) { body { overflow-x: clip; } }

img, svg, video, canvas { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .2em; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
h1, h2, h3, h4 { margin: 0; font-weight: 400; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; }
::selection { background: var(--c-cyan); color: var(--c-white); }

:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
  border-radius: 2px;
}
.section--ink :focus-visible, .on-dark :focus-visible, .section--water :focus-visible { outline-color: var(--c-ice); }
.nowrap { white-space: nowrap; }
.u-asis { text-transform: none !important; }
@media (max-width: 560px) { .hide-sm { display: none !important; } }
@media (min-width: 561px) { .show-sm { display: none !important; } }

.skip-link {
  position: fixed; left: 16px; top: -100px; z-index: 200;
  background: var(--c-ink); color: var(--c-white);
  padding: .7rem 1rem; border-radius: var(--r-s); text-decoration: none;
}
.skip-link:focus { top: 12px; }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* İnce film greni */
body::after {
  content: ""; position: fixed; inset: 0; z-index: var(--z-grain); pointer-events: none;
  opacity: .055; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .9 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Sayfa geçişi: yeni sayfa örtülü başlar (head içindeki satır içi betik .is-arriving ekler) */
html.is-arriving body::before {
  content: ""; position: fixed; inset: 0; z-index: calc(var(--z-transition) + 1);
  background: url("../img/logo/uzunoglu-su-logo-white.png") center / min(300px, 62vw) auto no-repeat, radial-gradient(70% 55% at 50% 46%, #1B2A6B 0%, #111850 45%, #0B0F33 100%);
}

/* Lenis */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }

/* --------------------------------------------------------------------------
   Tipografi yardımcıları
   -------------------------------------------------------------------------- */
.display-mega, .display-1, .display-2, .display-3 {
  font-family: var(--f-display);
  font-optical-sizing: auto;
  font-weight: 380;
  letter-spacing: -.025em;
  line-height: .98;
  text-wrap: balance;
}
.display-mega { font-size: var(--fs-mega); line-height: .88; letter-spacing: -.045em; font-weight: 340; }
.display-1 { font-size: var(--fs-1); }
.display-2 { font-size: var(--fs-2); line-height: 1.02; }
.display-3 { font-size: var(--fs-3); line-height: 1.12; letter-spacing: -.015em; }
.display-mega em, .display-1 em, .display-2 em, .display-3 em {
  font-style: italic; font-weight: 300; color: var(--c-cyan);
}
.on-dark em, .section--ink .display-1 em, .section--ink .display-2 em, .section--ink .display-3 em { color: var(--c-ice); }

.lead { font-size: clamp(1.1rem, 1.5vw, 1.3rem); line-height: 1.55; color: var(--c-muted); max-width: 38em; text-wrap: pretty; }
.muted { color: var(--c-muted); }
.small { font-size: var(--fs-small); }

.eyebrow {
  display: inline-flex; align-items: center; gap: .75em;
  font-family: var(--f-mono); font-size: var(--fs-micro); font-weight: 500;
  letter-spacing: .14em; text-transform: uppercase; color: var(--c-blue);
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: currentColor; opacity: .7; }
.eyebrow--plain::before { display: none; }
.mono { font-family: var(--f-mono); letter-spacing: .02em; }
.num { font-family: var(--f-display); font-variant-numeric: lining-nums tabular-nums; }

.on-dark, .section--ink { color: var(--c-text-inv); }
.on-dark .lead, .section--ink .lead, .on-dark .muted, .section--ink .muted { color: var(--c-muted-inv); }
.on-dark .eyebrow, .section--ink .eyebrow { color: var(--c-ice); }

.prose p + p { margin-top: 1em; }
.prose { max-width: 40em; text-wrap: pretty; }

/* --------------------------------------------------------------------------
   Yerleşim
   -------------------------------------------------------------------------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.wrap--narrow { max-width: calc(var(--wrap-narrow) + 2 * var(--gutter)); }
.section { padding-block: var(--section-y); position: relative; }
.section--tight { padding-block: calc(var(--section-y) * .6); }
.section--mist { background: var(--c-mist); }
.section--glacier { background: var(--g-glacier); }
.section--ink { background: var(--c-ink); }
.section--water { background: var(--g-water); color: var(--c-text-inv); }
.section-head {
  display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 1.5rem 3rem;
  margin-bottom: clamp(2.5rem, 5vw, 4.5rem);
}
.section-head > :first-child { display: grid; gap: 1.1rem; }
.section-head .lead { margin-top: .4rem; }
@media (max-width: 760px) { .section-head { grid-template-columns: 1fr; } }
.section-head > .link-arrow { justify-self: start; }

.split { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: clamp(1.5rem, 3vw, 3rem); }
.span-5 { grid-column: span 5; } .span-6 { grid-column: span 6; } .span-7 { grid-column: span 7; }
.span-4 { grid-column: span 4; } .span-8 { grid-column: span 8; }
@media (max-width: 900px) { .split > * { grid-column: 1 / -1; } }

.rule { height: 1px; background: var(--c-line); border: 0; margin: 0; }
.section--ink .rule, .on-dark .rule { background: var(--c-line-inv); }

/* --------------------------------------------------------------------------
   Düğmeler & bağlantılar
   -------------------------------------------------------------------------- */
.btn {
  --btn-bg: var(--c-ink); --btn-fg: var(--c-white); --btn-bd: transparent;
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: .6em;
  min-height: 52px; padding: .85rem 1.5rem;
  border: 1px solid var(--btn-bd); border-radius: var(--r-pill);
  background: var(--btn-bg); color: var(--btn-fg);
  font-family: var(--f-sans); font-weight: 700; font-size: .95rem; letter-spacing: .01em; line-height: 1.1;
  text-decoration: none; white-space: nowrap; isolation: isolate; overflow: hidden;
  transition: transform .35s var(--ease-out), box-shadow .35s var(--ease-out), background-color .3s, color .3s, border-color .3s;
}
.btn::before { /* su dolma efekti */
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, var(--c-cyan), var(--c-royal));
  transform: translateY(101%); transition: transform .5s var(--ease-out);
  border-radius: inherit;
}
.btn:hover::before, .btn:focus-visible::before { transform: translateY(0); }
.btn:hover { transform: translateY(-1px); box-shadow: 0 10px 30px -10px rgba(21, 119, 192, .55); }
.btn:active { transform: translateY(0); }
.btn svg { width: 1.15em; height: 1.15em; flex: none; }
.btn--primary { --btn-bg: var(--c-ink); }
.btn--water { --btn-bg: var(--c-cyan); }
.btn--water::before { background: linear-gradient(180deg, var(--c-royal), var(--c-indigo)); }
.btn--ghost { --btn-bg: transparent; --btn-fg: var(--c-text); --btn-bd: var(--c-line-strong); }
.btn--ghost:hover { --btn-fg: var(--c-white); --btn-bd: transparent; }
.btn--light { --btn-bg: var(--c-white); --btn-fg: var(--c-ink); }
.btn--light:hover { --btn-fg: var(--c-white); }
.btn--outline-light { --btn-bg: transparent; --btn-fg: var(--c-white); --btn-bd: rgba(255,255,255,.4); }
.btn--wa .wa-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c-wa); box-shadow: 0 0 0 3px rgba(37, 211, 102, .22); }
.btn--sm { min-height: 42px; padding: .6rem 1.1rem; font-size: .88rem; }
.btn--lg { min-height: 60px; padding: 1rem 1.9rem; font-size: 1rem; }
.btn--block { width: 100%; }
.btn[disabled] { opacity: .5; pointer-events: none; }

.link-arrow {
  display: inline-flex; align-items: center; gap: .6em;
  font-weight: 700; text-decoration: none; color: inherit;
  padding-block: .3em; border-bottom: 1px solid currentColor;
}
button.link-arrow { background: none; border: 0; border-bottom: 1px solid currentColor; padding-inline: 0; border-radius: 0; font: inherit; font-weight: 700; }
.link-arrow svg { width: 1.05em; height: 1.05em; transition: transform .4s var(--ease-out); }
.link-arrow:hover svg { transform: translateX(5px); }

.icon { width: 1.25em; height: 1.25em; flex: none; }

/* --------------------------------------------------------------------------
   Üst bilgi (header) & navigasyon
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: var(--z-header);
  height: var(--header-h);
  transition: transform .5s var(--ease-out);
}
/* Yüzen cam kapsül */
.site-header__inner.wrap {
  position: relative; display: flex; align-items: center; gap: 1.25rem;
  width: calc(100% - 2 * var(--gutter)); max-width: calc(var(--wrap) - 2 * var(--gutter));
  height: calc(var(--header-h) - 18px); margin-top: 10px;
  padding-inline: 1.5rem .45rem;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, .58);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border: 1px solid rgba(16, 21, 58, .08);
  box-shadow: 0 14px 40px -22px rgba(11, 15, 51, .45), inset 0 1px 0 rgba(255, 255, 255, .75);
  transition: background-color .45s, border-color .45s, box-shadow .45s;
}
.site-header__inner.wrap::before { /* kenarda ince su parıltısı */
  content: ""; position: absolute; inset: -1px; border-radius: inherit; pointer-events: none; padding: 1px;
  background: linear-gradient(100deg, transparent 20%, rgba(21, 119, 192, .35) 50%, transparent 80%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box exclude, linear-gradient(#000 0 0);
  opacity: .7;
}
.site-header.is-scrolled .site-header__inner.wrap { background: rgba(255, 255, 255, .74); }
.site-header.is-hidden { transform: translateY(calc(-100% - 32px)); }

.brand { position: relative; display: inline-flex; align-items: center; text-decoration: none; flex: none; }
.brand img { width: clamp(140px, 13vw, 180px); height: auto; transition: opacity .45s; }
.brand .brand__light { position: absolute; left: 0; top: 50%; transform: translateY(-50%); opacity: 0; }

.nav { margin-inline: auto; }
.nav ul { list-style: none; display: flex; gap: .2rem; }
.nav a {
  position: relative; display: inline-block; padding: .55rem 1rem; border-radius: var(--r-pill);
  font-size: .9rem; font-weight: 600; text-decoration: none; color: var(--c-text);
  transition: background-color .3s, color .3s;
}
.nav a:hover { background: rgba(16, 21, 58, .06); }
.nav a[aria-current="page"] { background: var(--c-ink); color: var(--c-white); }

.header-actions { display: flex; align-items: center; gap: .5rem; margin-left: auto; }
@media (min-width: 901px) { .nav + .header-actions { margin-left: 0; } }
.header-phone {
  display: inline-flex; align-items: center; gap: .65rem; padding-right: .6rem;
  text-decoration: none; color: var(--c-text); transition: color .3s;
}
.header-phone__icon {
  display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%;
  background: rgba(21, 119, 192, .1); color: var(--c-cyan); transition: background-color .3s, color .3s;
}
.header-phone__icon svg { width: 17px; height: 17px; }
.header-phone__txt { display: grid; line-height: 1.15; }
.header-phone__label { font-size: .64rem; letter-spacing: .14em; text-transform: uppercase; color: var(--c-muted); transition: color .3s; }
.header-phone__num { font-family: var(--f-mono); font-size: .88rem; font-weight: 500; }
.header-phone:hover .header-phone__icon { background: var(--c-cyan); color: var(--c-white); }
.header-cta { min-height: 46px; padding-inline: 1.15rem; }

/* Koyu zeminde (video, koyu bölümler, açık mobil menü) kapsül koyu cama döner */
.site-header.is-dark .site-header__inner.wrap, body.menu-open .site-header .site-header__inner.wrap {
  background: rgba(11, 15, 51, .38);
  border-color: rgba(159, 212, 245, .16);
  box-shadow: 0 14px 40px -20px rgba(0, 0, 0, .6), inset 0 1px 0 rgba(255, 255, 255, .08);
}
.site-header.is-dark.is-scrolled .site-header__inner.wrap { background: rgba(11, 15, 51, .55); }
.site-header.is-dark .brand__dark, body.menu-open .site-header .brand__dark { opacity: 0; }
.site-header.is-dark .brand__light, body.menu-open .site-header .brand__light { opacity: 1; }
.site-header.is-dark .nav a { color: rgba(242, 246, 252, .82); }
.site-header.is-dark .nav a:hover { background: rgba(255, 255, 255, .08); color: var(--c-white); }
.site-header.is-dark .nav a[aria-current="page"] { background: var(--c-white); color: var(--c-ink); }
.site-header.is-dark .header-phone { color: var(--c-white); }
.site-header.is-dark .header-phone__label { color: var(--c-muted-inv); }
.site-header.is-dark .header-phone__icon { background: rgba(159, 212, 245, .14); color: var(--c-ice); }
.site-header.is-dark .cart-btn, .site-header.is-dark .menu-btn,
body.menu-open .site-header .cart-btn, body.menu-open .site-header .menu-btn {
  background: rgba(255, 255, 255, .06); border-color: rgba(255, 255, 255, .18); color: var(--c-white);
}

.cart-btn, .menu-btn {
  position: relative; display: inline-grid; place-items: center;
  width: 46px; height: 46px; border-radius: 50%;
  border: 1px solid var(--c-line-strong); background: rgba(255,255,255,.5); color: var(--c-ink);
  transition: background-color .3s, color .3s, border-color .3s;
}
.cart-btn:hover, .menu-btn:hover { background: var(--c-ink); color: var(--c-white); border-color: var(--c-ink); }
.cart-btn svg { width: 20px; height: 20px; }
.cart-btn__count {
  position: absolute; top: -4px; right: -4px; min-width: 20px; height: 20px; padding: 0 5px;
  border-radius: 10px; background: var(--c-cyan); color: var(--c-white);
  font: 600 11px/20px var(--f-mono); text-align: center;
  transform: scale(0); transition: transform .4s var(--ease-out);
}
.cart-btn__count.has-items { transform: scale(1); }
.cart-btn.is-bump { animation: bump .5s var(--ease-out); }
@keyframes bump { 30% { transform: scale(1.15); } 100% { transform: scale(1); } }

.menu-btn { display: none; }
.menu-btn__lines { position: relative; width: 18px; height: 12px; }
.menu-btn__lines::before, .menu-btn__lines::after {
  content: ""; position: absolute; left: 0; right: 0; height: 2px; border-radius: 2px; background: currentColor;
  transition: transform .4s var(--ease-out), top .4s var(--ease-out);
}
.menu-btn__lines::before { top: 1px; }
.menu-btn__lines::after { top: 9px; }
.menu-btn[aria-expanded="true"] .menu-btn__lines::before { top: 5px; transform: rotate(45deg); }
.menu-btn[aria-expanded="true"] .menu-btn__lines::after { top: 5px; transform: rotate(-45deg); }

@media (max-width: 1180px) { .header-phone { display: none; } }
@media (max-width: 560px) { .header-cta { display: none; } }
@media (max-width: 900px) { .site-header__inner.wrap { padding-inline: 1.1rem .4rem; height: calc(var(--header-h) - 14px); margin-top: 8px; } }
@media (max-width: 900px) {
  .nav { display: none; }
  .menu-btn { display: inline-grid; }
}

/* Mobil menü */
.mobile-menu {
  position: fixed; inset: 0; z-index: var(--z-menu);
  padding: calc(var(--header-h) + 2rem) var(--gutter) 2rem;
  background: var(--c-ink); color: var(--c-text-inv);
  display: flex; flex-direction: column; gap: 2rem; overflow-y: auto;
  clip-path: inset(0 0 100% 0); visibility: hidden;
  transition: clip-path .7s var(--ease-liquid), visibility 0s linear .7s;
}
.mobile-menu.is-open { clip-path: inset(0 0 0 0); visibility: visible; transition: clip-path .7s var(--ease-liquid), visibility 0s; }
.mobile-menu[hidden] { display: none; }
.mobile-menu ul { list-style: none; display: grid; }
.mobile-menu li { border-bottom: 1px solid var(--c-line-inv); }
.mobile-menu a.mobile-menu__link {
  display: flex; justify-content: space-between; align-items: baseline; padding: 1rem 0;
  font-family: var(--f-display); font-size: clamp(2rem, 9vw, 3rem); line-height: 1.05; letter-spacing: -.02em;
  text-decoration: none;
}
.mobile-menu a.mobile-menu__link span { font-family: var(--f-mono); font-size: .75rem; color: var(--c-ice); letter-spacing: .1em; }
.mobile-menu a[aria-current="page"] { color: var(--c-ice); }
.mobile-menu__contact { display: grid; gap: .75rem; margin-top: auto; }
.mobile-menu__contact .btn { width: 100%; }
body.menu-open .site-header { z-index: calc(var(--z-menu) + 1); transform: none; }

/* --------------------------------------------------------------------------
   Alt bilgi (footer)
   -------------------------------------------------------------------------- */
.site-footer {
  position: relative; background: var(--c-ink); color: var(--c-text-inv);
  padding-top: clamp(4rem, 8vw, 7rem); overflow: hidden;
}
.site-footer::before { /* yüzeydeki ışık */
  content: ""; position: absolute; left: -10%; right: -10%; top: -1px; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(159, 212, 245, .5), transparent);
}
.footer-top { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 2.5rem 2rem; padding-bottom: 3.5rem; }
.footer-brand img { width: 190px; opacity: .95; }
.footer-brand p { margin-top: 1.25rem; color: var(--c-muted-inv); font-size: var(--fs-small); max-width: 26em; }
.footer-col h2 {
  font-family: var(--f-mono); font-size: var(--fs-micro); font-weight: 500; letter-spacing: .14em;
  text-transform: uppercase; color: var(--c-ice); margin-bottom: 1.1rem;
}
.footer-col ul { list-style: none; display: grid; gap: .55rem; }
.footer-col a { text-decoration: none; color: var(--c-text-inv); opacity: .88; transition: opacity .2s, color .2s; }
.footer-col a:hover { opacity: 1; color: var(--c-ice); }
.footer-col address { font-style: normal; color: var(--c-muted-inv); font-size: var(--fs-small); line-height: 1.7; }
.footer-col dl { display: grid; grid-template-columns: auto 1fr; gap: .35rem 1rem; margin: 0; font-size: var(--fs-small); }
.footer-col dt { color: var(--c-muted-inv); }
.footer-col dd { margin: 0; font-family: var(--f-mono); }
.footer-social { display: flex; gap: .6rem; margin-top: 1.25rem; }
.footer-social a {
  display: grid; place-items: center; width: 42px; height: 42px; border-radius: 50%;
  border: 1px solid var(--c-line-inv); opacity: 1;
}
.footer-social a:hover { background: var(--c-white); color: var(--c-ink); }
.footer-social svg { width: 18px; height: 18px; }
.footer-word {
  font-family: var(--f-display); font-weight: 300; font-size: clamp(4rem, 17vw, 16rem);
  line-height: .8; letter-spacing: -.06em; white-space: nowrap; text-align: center;
  background: linear-gradient(180deg, rgba(159, 212, 245, .28), rgba(159, 212, 245, 0) 85%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  user-select: none; margin-bottom: -.12em;
}
.footer-bottom {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: .75rem 2rem;
  padding-block: 1.5rem; border-top: 1px solid var(--c-line-inv);
  font-size: .8rem; color: var(--c-muted-inv);
}
@media (max-width: 980px) { .footer-top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-top { grid-template-columns: 1fr; } }

/* --------------------------------------------------------------------------
   Ürün kartı (yeniden kullanılabilir)
   -------------------------------------------------------------------------- */
.product-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
  gap: 0; border-top: 1px solid var(--c-line); border-left: 1px solid var(--c-line);
}
.product-grid > * { border-right: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line); }
.product-card {
  position: relative; display: flex; flex-direction: column;
  background: var(--c-mineral); padding: clamp(1rem, 2vw, 1.5rem);
  transition: background-color .4s;
}
.product-card:hover { background: var(--c-white); }
.product-card__media {
  position: relative; aspect-ratio: 1 / 1; display: grid; place-items: center;
  margin-bottom: 1.25rem; overflow: hidden;
  background: radial-gradient(70% 60% at 50% 55%, #FFFFFF 0%, var(--c-mist) 100%);
  border-radius: var(--r-s);
}
.product-card__media img {
  /* mutlak konum: yüzde yükseklik kare kutuya göre çözülür, uzun (dikey) görseller taşmaz */
  position: absolute; left: 9%; top: 9%;
  width: 82%; height: 82%; object-fit: contain; mix-blend-mode: multiply;
  transition: transform .8s var(--ease-out);
}
.product-card:hover .product-card__media img { transform: scale(1.05) translateY(-2%); }
.product-card__tag {
  position: absolute; left: .75rem; top: .75rem;
  font-family: var(--f-mono); font-size: .66rem; letter-spacing: .12em; text-transform: uppercase;
  padding: .3rem .55rem; border-radius: var(--r-xs); background: rgba(255,255,255,.85); color: var(--c-royal);
}
.product-card__brand { font-family: var(--f-mono); font-size: var(--fs-micro); letter-spacing: .14em; text-transform: uppercase; color: var(--c-blue); }
.product-card__title { font-family: var(--f-display); font-size: var(--fs-4); line-height: 1.2; letter-spacing: -.01em; margin-top: .35rem; font-weight: 450; }
.product-card__meta { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .7rem; }
.product-card__meta span {
  font-family: var(--f-mono); font-size: .74rem; padding: .22rem .5rem;
  border: 1px solid var(--c-line-strong); border-radius: var(--r-xs); color: var(--c-muted);
}
.product-card__note { margin-top: .7rem; font-size: var(--fs-small); color: var(--c-muted); line-height: 1.5; }
.product-card__actions { display: flex; gap: .5rem; margin-top: auto; padding-top: 1.25rem; }
.product-card__actions .btn { flex: 1; min-width: 0; padding-inline: .9rem; }
.product-card { container-type: inline-size; }
@container (max-width: 250px) {
  .product-card__actions { flex-direction: column; }
  .product-card__actions .qty { width: 100%; justify-content: space-between; }
  .product-card__actions .btn { width: 100%; }
  .product-card__note { display: none; }
  .product-card__title { font-size: 1.05rem; }
  .product-card__media { margin-bottom: .9rem; }
}

/* Adet seçici */
.qty {
  display: inline-flex; align-items: center; flex: none;
  border: 1px solid var(--c-line-strong); border-radius: var(--r-pill); height: 42px; background: var(--c-white);
}
.qty__btn {
  width: 34px; height: 100%; border: 0; background: none; display: grid; place-items: center; color: var(--c-ink);
  border-radius: var(--r-pill);
}
.qty__btn:hover { color: var(--c-cyan); }
.qty__btn svg { width: 14px; height: 14px; }
.qty__input {
  width: 30px; border: 0; background: none; text-align: center; font-family: var(--f-mono); font-size: .9rem;
  -moz-appearance: textfield; appearance: textfield; padding: 0;
}
.qty__input::-webkit-outer-spin-button, .qty__input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

/* --------------------------------------------------------------------------
   Sepet çekmecesi
   -------------------------------------------------------------------------- */
.cart-scrim {
  position: fixed; inset: 0; z-index: var(--z-drawer); background: rgba(11, 15, 51, .45);
  opacity: 0; visibility: hidden; transition: opacity .45s, visibility 0s linear .45s;
  -webkit-backdrop-filter: blur(3px); backdrop-filter: blur(3px);
}
.cart-drawer {
  position: fixed; top: 0; right: 0; bottom: 0; z-index: calc(var(--z-drawer) + 1);
  width: min(460px, 100%); display: flex; flex-direction: column;
  background: var(--c-mineral); color: var(--c-text);
  transform: translateX(102%); visibility: hidden;
  transition: transform .6s var(--ease-out), visibility 0s linear .6s;
  box-shadow: -30px 0 80px -30px rgba(11, 15, 51, .5);
}
body.cart-open .cart-scrim { opacity: 1; visibility: visible; transition: opacity .45s; }
body.cart-open .cart-drawer { transform: none; visibility: visible; transition: transform .6s var(--ease-out); }
.cart-drawer__head {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--c-line);
}
.cart-drawer__head h2 { font-family: var(--f-display); font-size: 1.6rem; letter-spacing: -.02em; }
.cart-drawer__head h2 small { font-family: var(--f-mono); font-size: .75rem; color: var(--c-muted); margin-left: .4rem; letter-spacing: 0; }
.cart-close {
  width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--c-line-strong);
  background: none; display: grid; place-items: center;
}
.cart-close:hover { background: var(--c-ink); color: var(--c-white); }
.cart-close svg { width: 18px; height: 18px; }
.cart-drawer__body { flex: 1; overflow-y: auto; padding: .5rem 1.5rem 1.5rem; overscroll-behavior: contain; }
.cart-empty { padding: 3rem 0; text-align: left; display: grid; gap: 1rem; justify-items: start; }
.cart-empty p { color: var(--c-muted); }
.cart-list { list-style: none; }
.cart-item {
  display: grid; grid-template-columns: 64px 1fr auto; gap: .9rem; align-items: center;
  padding: 1rem 0; border-bottom: 1px solid var(--c-line);
}
.cart-item__img { width: 64px; height: 64px; border-radius: var(--r-s); background: var(--c-white); display: grid; place-items: center; overflow: hidden; }
.cart-item__img img { width: 88%; height: 88%; object-fit: contain; mix-blend-mode: multiply; }
.cart-item__name { font-weight: 700; font-size: .95rem; line-height: 1.3; }
.cart-item__meta { font-family: var(--f-mono); font-size: .72rem; color: var(--c-muted); margin-top: .2rem; }
.cart-item__side { display: grid; justify-items: end; gap: .35rem; }
.cart-item__remove { border: 0; background: none; color: var(--c-muted); font-size: .75rem; text-decoration: underline; padding: .2rem; }
.cart-item__remove:hover { color: var(--c-indigo); }
.cart-item .qty { height: 36px; }
.cart-form { display: grid; gap: 1rem; margin-top: 1.5rem; }
.cart-form fieldset { border: 0; padding: 0; margin: 0; }
.cart-form legend, .field label {
  font-family: var(--f-mono); font-size: var(--fs-micro); letter-spacing: .12em; text-transform: uppercase;
  color: var(--c-muted); margin-bottom: .6rem; display: block; padding: 0;
}
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; }
.seg label {
  position: relative; display: grid; gap: .1rem; padding: .8rem .9rem; cursor: pointer;
  border: 1px solid var(--c-line-strong); border-radius: var(--r-s); background: var(--c-white);
  transition: border-color .2s, box-shadow .2s;
}
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg strong { font-size: .95rem; }
.seg span { font-size: .78rem; color: var(--c-muted); }
.seg label:has(input:checked) { border-color: var(--c-cyan); box-shadow: inset 0 0 0 1px var(--c-cyan); }
.seg label:has(input:focus-visible) { outline: 2px solid var(--c-cyan); outline-offset: 2px; }
.field { display: grid; }
.field input, .field textarea {
  width: 100%; padding: .8rem .9rem; border: 1px solid var(--c-line-strong); border-radius: var(--r-s);
  background: var(--c-white); font-size: .95rem; resize: vertical;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--c-cyan); box-shadow: 0 0 0 3px rgba(21, 119, 192, .15); }
.field.is-invalid input, .field.is-invalid textarea { border-color: #B3261E; }
.field__error { color: #B3261E; font-size: .8rem; margin-top: .35rem; }
.cart-drawer__foot { padding: 1.25rem 1.5rem 1.5rem; border-top: 1px solid var(--c-line); display: grid; gap: .7rem; background: var(--c-white); }
.cart-drawer__foot p { font-size: .78rem; color: var(--c-muted); line-height: 1.5; }

/* Bildirim (toast) */
.toast {
  position: fixed; left: 50%; bottom: 24px; z-index: var(--z-toast);
  display: flex; align-items: center; gap: 1rem; padding: .7rem .7rem .7rem 1.1rem;
  max-width: calc(100% - 32px);
  background: var(--c-ink); color: var(--c-white); border-radius: var(--r-pill);
  box-shadow: var(--shadow-lift); font-size: .9rem;
  transform: translate(-50%, 140%); transition: transform .55s var(--ease-out);
}
.toast.is-on { transform: translate(-50%, 0); }
.toast button { border: 0; border-radius: var(--r-pill); background: var(--c-white); color: var(--c-ink); font-weight: 700; padding: .5rem .9rem; font-size: .82rem; white-space: nowrap; }
.toast__text { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* --------------------------------------------------------------------------
   Sıvı sayfa geçişi
   -------------------------------------------------------------------------- */
.liquid-transition {
  position: fixed; inset: 0; z-index: var(--z-transition); pointer-events: none;
  visibility: hidden; overflow: hidden;
}
.liquid-transition.is-active { visibility: visible; pointer-events: all; }
/* Katmanlar ekranın 80 px üstünden başlar: üst kenarları dalga biçiminde maskelidir.
   Başlangıçta ekranın altında beklerler (JS translate ile yükseltir/indirir). */
.lt-layer {
  position: absolute; left: 0; right: 0; top: -80px; bottom: 0;
  transform: translate3d(0, calc(100vh + 80px), 0); will-change: transform;
}
.liquid-transition.is-shown .lt-layer { transform: none; }
.lt-layer--1 { background: linear-gradient(180deg, #BFE4F9 0%, var(--c-ice) 40%, #7FC2EE 100%); -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 80' preserveAspectRatio='none'%3E%3Cpath d='M0 46 C 220 8 420 8 640 40 S 1060 76 1280 38 S 1400 22 1440 28 L1440 80 L0 80 Z'/%3E%3C/svg%3E") top / 100% 80px no-repeat, linear-gradient(#000 0 0) 0 79px / 100% calc(100% - 79px) no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 80' preserveAspectRatio='none'%3E%3Cpath d='M0 46 C 220 8 420 8 640 40 S 1060 76 1280 38 S 1400 22 1440 28 L1440 80 L0 80 Z'/%3E%3C/svg%3E") top / 100% 80px no-repeat, linear-gradient(#000 0 0) 0 79px / 100% calc(100% - 79px) no-repeat; }
.lt-layer--2 { background: linear-gradient(180deg, #3D93D6 0%, var(--c-cyan) 35%, var(--c-royal) 100%); -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 80' preserveAspectRatio='none'%3E%3Cpath d='M0 30 C 200 70 460 70 700 36 S 1120 4 1440 40 L1440 80 L0 80 Z'/%3E%3C/svg%3E") top / 100% 80px no-repeat, linear-gradient(#000 0 0) 0 79px / 100% calc(100% - 79px) no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 80' preserveAspectRatio='none'%3E%3Cpath d='M0 30 C 200 70 460 70 700 36 S 1120 4 1440 40 L1440 80 L0 80 Z'/%3E%3C/svg%3E") top / 100% 80px no-repeat, linear-gradient(#000 0 0) 0 79px / 100% calc(100% - 79px) no-repeat; }
.lt-layer--3 { background: radial-gradient(70% 55% at 50% 46%, #1B2A6B 0%, #111850 45%, #0B0F33 100%); -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 80' preserveAspectRatio='none'%3E%3Cpath d='M0 40 C 180 8 360 8 540 40 S 900 72 1080 40 S 1350 14 1440 30 L1440 80 L0 80 Z'/%3E%3C/svg%3E") top / 100% 80px no-repeat, linear-gradient(#000 0 0) 0 79px / 100% calc(100% - 79px) no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 80' preserveAspectRatio='none'%3E%3Cpath d='M0 40 C 180 8 360 8 540 40 S 900 72 1080 40 S 1350 14 1440 30 L1440 80 L0 80 Z'/%3E%3C/svg%3E") top / 100% 80px no-repeat, linear-gradient(#000 0 0) 0 79px / 100% calc(100% - 79px) no-repeat; }
/* lacivert dalganın parlak kenarı: maskeyle aynı eğri, katmanla birlikte hareket eder */
.lt-surface {
  position: absolute; left: 0; top: -80px; width: 100%; height: 80px; overflow: visible;
  fill: none; stroke: rgba(220, 240, 255, .85); stroke-width: 1.4; vector-effect: non-scaling-stroke;
  filter: drop-shadow(0 0 6px rgba(159, 212, 245, .7));
  transform: translate3d(0, calc(100vh + 80px), 0); opacity: 0; will-change: transform;
}
.liquid-transition__logo {
  position: absolute; left: 50%; top: 50%; width: min(300px, 62vw); height: auto;
  transform: translate(-50%, -50%) scale(.96); opacity: 0;
  transition: opacity .35s var(--ease-out), transform .6s var(--ease-out);
}
.lt-label {
  position: absolute; left: 50%; top: calc(50% + min(24px, 5vw) + 26px);
  transform: translate(-50%, 8px); opacity: 0; white-space: nowrap;
  font-family: var(--f-mono); font-size: var(--fs-micro); letter-spacing: .24em; text-transform: uppercase;
  color: var(--c-ice); display: flex; align-items: center; gap: .9em;
  transition: opacity .35s var(--ease-out), transform .6s var(--ease-out);
}
.lt-label:empty { display: none; }
.lt-label::before, .lt-label::after { content: ""; width: 28px; height: 1px; background: currentColor; opacity: .6; }
.liquid-transition.is-covering .liquid-transition__logo { opacity: 1; transform: translate(-50%, -50%) scale(1); transition-delay: .42s; }
.liquid-transition.is-covering .lt-label { opacity: 1; transform: translate(-50%, 0); transition-delay: .52s; }
.liquid-transition.is-shown .liquid-transition__logo { opacity: 1; transform: translate(-50%, -50%) scale(1); transition: none; }
.liquid-transition.is-shown .lt-label { opacity: 1; transform: translate(-50%, 0); transition: none; }
.liquid-transition.is-revealing .liquid-transition__logo { opacity: 0; transform: translate(-50%, -50%) scale(1.03); transition: opacity .25s var(--ease-out), transform .5s var(--ease-out); }
.liquid-transition.is-revealing .lt-label { opacity: 0; transform: translate(-50%, -6px); transition: opacity .2s var(--ease-out), transform .5s var(--ease-out); }

/* --------------------------------------------------------------------------
   Kaydırma dizisi (SeqPlayer)
   --------------------------------------------------------------------------
   <div class="seq" data-seq="hero" data-frames="..." data-count="150" data-length="3">
     <div class="seq__stage">
       <canvas class="seq__canvas"></canvas>   (yoksa JS ekler)
       <div class="seq__layers"> <div data-seq-show="0,0.4">…</div> … </div>
     </div>
   </div>
   JS çalışınca .seq--live eklenir: kapsayıcı (data-length × 100vh) uzar, sahne sticky olur.
   JS yoksa her katman normal akışta, görünür kalır. */
.seq { position: relative; }
.seq__stage { position: relative; min-height: 100vh; overflow: hidden; isolation: isolate; }
.seq__canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }
.seq__layers { position: relative; z-index: 2; min-height: 100vh; }
.seq--live { height: calc(var(--seq-length, 3) * 100vh); }
.seq--live .seq__stage { position: sticky; top: 0; height: 100vh; min-height: 0; }
@supports (height: 100svh) {
  .seq--live { height: calc(var(--seq-length, 3) * 100svh); }
  .seq--live .seq__stage { height: 100svh; }
}
.seq--live .seq__layers { display: grid; height: 100%; min-height: 0; }
.seq--live .seq__layers > * { grid-area: 1 / 1; min-width: 0; }
/* Gizli katmanlar yalnızca GÖRSEL olarak gizlenir (opacity + pointer-events);
   erişilebilirlik ağacında kalırlar, ekran okuyucu tüm adımları okuyabilir.
   Klavye odağı gizli bir katmana girerse SeqPlayer sayfayı o adıma kaydırır. */
.seq--live [data-seq-show] {
  opacity: 0; pointer-events: none; transform: translate3d(0, 28px, 0);
  transition: opacity .7s var(--ease-out), transform .9s var(--ease-out);
}
/* ilk kurulumda gizli katmanlar solarak değil, anında gizlenir */
.seq--live:not(.seq--ready) [data-seq-show] { transition: none; }
.seq--live [data-seq-show]:focus-within,
.seq--live [data-seq-show].is-on {
  opacity: 1; pointer-events: auto; transform: none;
}
/* İsteğe bağlı okunabilirlik perdesi: <div class="seq" data-scrim> (gerçek video karelerinde önerilir) */
.seq[data-scrim] .seq__stage::after {
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(180deg, rgba(11, 15, 51, .1) 0%, rgba(11, 15, 51, .2) 45%, rgba(11, 15, 51, .62) 100%);
}
.seq-meter { position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: rgba(255,255,255,.12); z-index: 3; }
.seq-meter::after { content: ""; position: absolute; inset: 0; background: var(--c-ice); transform-origin: left; transform: scaleX(var(--seq-p, 0)); }

/* --------------------------------------------------------------------------
   Hareket tercihi
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}