/* Cesika Çatı Sistemleri — site stilleri
   Kimlik: kâğıt zemin, mürekkep laciverti, patina yeşili, bakır vurgu.
   Başlıklar Newsreader (serif), metin IBM Plex Sans. */

:root {
  --ink: #15212b;
  --ink-2: #1d2c38;
  --ink-3: #2a3b48;
  --night: #0f1820;
  --paper: #f4f2ed;
  --paper-2: #ebe7de;
  --sheet: #fbfaf7;
  --text: #17222c;
  --muted: #56616b;
  --line: #d6d0c4;
  --line-soft: #e4dfd5;
  --patina: #2d6a61;
  --patina-deep: #1f4e47;
  --patina-soft: #e1ebe7;
  --patina-light: #9bcabe;
  --copper: #a35d38;
  --copper-light: #dea47c;
  --wa: #157a46;
  --wa-dark: #0f6038;
  --on-dark: #e8ebec;
  --on-dark-muted: #a6b1b8;
  --line-dark: rgba(232, 235, 236, 0.16);
  --focus: var(--copper);

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: clamp(1rem, 0.97rem + 0.14vw, 1.0625rem);
  --fs-lg: clamp(1.08rem, 1.02rem + 0.3vw, 1.22rem);
  --fs-h4: clamp(1.1rem, 1.04rem + 0.3vw, 1.25rem);
  --fs-h3: clamp(1.3rem, 1.17rem + 0.6vw, 1.65rem);
  --fs-h2: clamp(1.85rem, 1.4rem + 2vw, 3.05rem);
  --fs-h1: clamp(2.15rem, 1.45rem + 3.4vw, 4.4rem);
  --fs-display: clamp(2.4rem, 1.5rem + 4.4vw, 5.4rem);

  --wrap: 1280px;
  --gutter: clamp(16px, 4vw, 48px);
  --header-h: 68px;
  --space: clamp(64px, 8vw, 120px);
  --ease: cubic-bezier(0.25, 0.7, 0.2, 1);
  --shadow: 0 18px 40px -24px rgba(15, 24, 32, 0.45);
}
@media (min-width: 1080px) { :root { --header-h: 78px; } }

/* ---------- Temel ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 20px); }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: var(--fs-base);
  line-height: 1.68;
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}
img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: var(--patina); text-decoration-thickness: 1px; text-underline-offset: 0.22em; }
a:hover { color: var(--patina-deep); }
p, ul, ol, dl, figure, table, address { margin: 0 0 1.1em; }
address { font-style: normal; }
h1, h2, h3, h4 { margin: 0 0 0.55em; font-family: var(--serif); font-weight: 500; line-height: 1.1; letter-spacing: -0.012em; color: inherit; text-wrap: balance; }
h1 { font-size: var(--fs-h1); line-height: 1.04; letter-spacing: -0.02em; }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); line-height: 1.2; }
h4 { font-size: var(--fs-h4); }
h1 em, h2 em { font-style: italic; color: var(--patina); }
p { text-wrap: pretty; }
strong { font-weight: 600; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }
main:focus { outline: none; }
::selection { background: var(--patina); color: #fff; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; left: 16px; top: -80px; z-index: 300; padding: 12px 18px;
  background: var(--ink); color: var(--paper); font-weight: 500; text-decoration: none;
}
.skip-link:focus { top: 12px; color: var(--paper); }
.container { width: 100%; max-width: calc(var(--wrap) + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter); }
.icon { width: 1.15em; height: 1.15em; flex: none; }

.kicker {
  display: flex; align-items: center; gap: 0.75em; margin-bottom: 1.25rem;
  font-size: var(--fs-xs); font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted);
}
.kicker::before { content: ""; width: 28px; height: 1px; background: var(--copper); flex: none; }
.lead { font-size: var(--fs-lg); color: var(--muted); max-width: 38em; }

/* ---------- Düğmeler ---------- */
.btn {
  --b: var(--ink);
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6em;
  min-height: 48px; padding: 0.7em 1.3em;
  border: 1px solid var(--b); background: transparent; color: var(--ink);
  font-size: 0.95rem; font-weight: 500; line-height: 1.2; letter-spacing: 0.01em; text-decoration: none;
  cursor: pointer; transition: background-color 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.btn .icon { width: 1.1em; height: 1.1em; transition: transform 0.25s var(--ease); }
.btn:hover .icon[class*="icon"]:last-child:not(:first-child) { transform: translateX(3px); }
.btn--sm { min-height: 42px; padding: 0.55em 1.1em; font-size: 0.9rem; }
.btn--block { width: 100%; }
.btn--ink { background: var(--ink); color: var(--paper); }
.btn--ink:hover { background: var(--patina-deep); border-color: var(--patina-deep); color: #fff; }
.btn--line:hover { background: var(--ink); color: var(--paper); }
.btn--whatsapp { --b: var(--wa); background: var(--wa); color: #fff; }
.btn--whatsapp:hover { --b: var(--wa-dark); background: var(--wa-dark); color: #fff; }
.btn--paper { --b: var(--paper); background: var(--paper); color: var(--ink); }
.btn--paper:hover { --b: var(--patina-light); background: var(--patina-light); color: var(--ink); }
.btn--line-light { --b: rgba(232, 235, 236, 0.45); color: var(--on-dark); }
.btn--line-light:hover { --b: var(--paper); background: var(--paper); color: var(--ink); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 0.5em; font-weight: 500; text-decoration: none; color: var(--ink);
  border-bottom: 1px solid currentColor; padding-bottom: 2px;
}
.link-arrow:hover { color: var(--patina); }
.link-arrow .icon { transition: transform 0.25s var(--ease); }
.link-arrow:hover .icon { transform: translateX(4px); }
.stretched::after { content: ""; position: absolute; inset: 0; z-index: 1; }

/* ---------- Üst bölüm ---------- */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(244, 242, 237, 0.96); border-bottom: 1px solid var(--line); }
@supports (backdrop-filter: blur(8px)) { .site-header { background: rgba(244, 242, 237, 0.88); backdrop-filter: saturate(1.4) blur(10px); } }
.header-inner { display: flex; align-items: center; gap: 20px; height: var(--header-h); }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); margin-right: auto; }
.brand:hover { color: var(--ink); }
.brand-mark { width: 38px; height: 38px; color: var(--ink); }
.brand-text { display: flex; flex-direction: column; line-height: 1; }
.brand-name { font-family: var(--serif); font-size: 1.62rem; font-weight: 600; letter-spacing: -0.01em; }
.brand-sub { margin-top: 4px; font-size: 0.62rem; font-weight: 500; letter-spacing: 0.22em; text-transform: uppercase; color: var(--muted); }

.main-nav { display: none; }
.main-nav__list { display: flex; align-items: center; gap: 4px; margin: 0; padding: 0; list-style: none; }
.main-nav__list > li { position: relative; display: flex; align-items: center; }
.main-nav__link {
  position: relative; display: block; padding: 10px 12px; color: var(--ink); text-decoration: none; font-size: 0.95rem; font-weight: 500;
}
.main-nav__link::after {
  content: ""; position: absolute; left: 12px; right: 12px; bottom: 4px; height: 1px; background: var(--patina);
  transform: scaleX(0); transform-origin: left; transition: transform 0.25s var(--ease);
}
.main-nav__link:hover { color: var(--patina-deep); }
.main-nav__link:hover::after, .main-nav__link[aria-current]::after, .main-nav__link[data-section]::after { transform: scaleX(1); }
.main-nav__link[aria-current], .main-nav__link[data-section] { color: var(--patina-deep); }
.has-sub .main-nav__link { padding-right: 4px; }
.has-sub .main-nav__link::after { right: 0; }
.sub-toggle {
  display: grid; place-items: center; width: 28px; height: 36px; padding: 0; margin-right: 6px;
  border: 0; background: none; color: var(--muted); cursor: pointer;
}
.sub-toggle .icon { width: 16px; height: 16px; transition: transform 0.2s var(--ease); }
.sub-toggle[aria-expanded="true"] .icon { transform: rotate(180deg); }
.subnav {
  position: absolute; top: calc(100% + 14px); left: -20px; width: 560px;
  padding: 10px; background: var(--sheet); border: 1px solid var(--line); box-shadow: var(--shadow);
  visibility: hidden; opacity: 0; transform: translateY(6px);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0s linear 0.2s;
}
.subnav::before { content: ""; position: absolute; left: 0; right: 0; top: -15px; height: 15px; }
.has-sub:hover .subnav, .has-sub:focus-within .subnav, .has-sub.is-open .subnav {
  visibility: visible; opacity: 1; transform: none; transition-delay: 0s;
}
.has-sub.is-closed .subnav { visibility: hidden; opacity: 0; }
.subnav__list { margin: 0; padding: 0; list-style: none; }
.subnav__list a { display: block; padding: 12px 14px; text-decoration: none; color: var(--ink); border-bottom: 1px solid var(--line-soft); }
.subnav__list a:hover, .subnav__list a[aria-current] { background: var(--patina-soft); }
.subnav__name { display: block; font-family: var(--serif); font-size: 1.15rem; line-height: 1.25; }
.subnav__desc { display: block; margin-top: 2px; font-size: var(--fs-sm); color: var(--muted); line-height: 1.45; }
.subnav__all { display: flex; align-items: center; gap: 8px; padding: 14px 14px 6px; font-size: var(--fs-sm); font-weight: 500; text-decoration: none; color: var(--patina-deep); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.header-phone { display: none; align-items: center; gap: 8px; padding: 8px 6px; color: var(--ink); text-decoration: none; font-weight: 500; font-variant-numeric: tabular-nums; white-space: nowrap; }
.header-phone .icon { color: var(--patina); }
.header-phone:hover { color: var(--patina-deep); }
.header-cta { display: none; }
.menu-toggle {
  display: inline-flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 4px 0 12px;
  border: 0; background: none; color: var(--ink); font-size: 0.9rem; font-weight: 500; cursor: pointer;
}
.menu-toggle__bars, .menu-toggle__bars::before, .menu-toggle__bars::after {
  display: block; width: 22px; height: 1.5px; background: currentColor; transition: transform 0.25s var(--ease), opacity 0.2s;
}
.menu-toggle__bars { position: relative; order: 2; }
.menu-toggle__bars::before, .menu-toggle__bars::after { content: ""; position: absolute; left: 0; }
.menu-toggle__bars::before { top: -7px; }
.menu-toggle__bars::after { top: 7px; }
.menu-toggle[aria-expanded="true"] .menu-toggle__bars { background: transparent; }
.menu-toggle[aria-expanded="true"] .menu-toggle__bars::before { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-toggle__bars::after { transform: translateY(-7px) rotate(-45deg); }

@media (min-width: 560px) { .header-cta { display: inline-flex; } }
@media (min-width: 1080px) {
  .main-nav { display: block; }
  .menu-toggle, .drawer { display: none !important; }
  .brand { margin-right: 12px; }
  .main-nav { margin-right: auto; }
}
@media (min-width: 1240px) { .header-phone { display: inline-flex; } }

/* Mobil menü */
.drawer {
  position: fixed; left: 0; right: 0; top: var(--header-h); bottom: 0; z-index: 99;
  background: var(--paper); border-top: 1px solid var(--line); overflow-y: auto; overscroll-behavior: contain;
}
.drawer.is-open { animation: drawer-in 0.28s var(--ease); }
@keyframes drawer-in { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
.drawer__inner { display: flex; flex-direction: column; gap: 32px; min-height: 100%; padding-top: 20px; padding-bottom: 32px; }
.drawer-nav { margin: 0; padding: 0; list-style: none; }
.drawer-nav > li { border-bottom: 1px solid var(--line); }
.drawer-nav > li > a { display: block; padding: 14px 0; font-family: var(--serif); font-size: 1.75rem; line-height: 1.2; color: var(--ink); text-decoration: none; }
.drawer-nav a[aria-current] { color: var(--patina); }
.drawer-sub { margin: -4px 0 14px; padding: 0 0 0 14px; list-style: none; border-left: 1px solid var(--copper); }
.drawer-sub a { display: block; padding: 7px 0; color: var(--muted); text-decoration: none; font-size: 1rem; }
.drawer-sub a[aria-current] { color: var(--patina); font-weight: 500; }
.drawer-contact { margin-top: auto; display: grid; gap: 14px; }
.drawer-contact__phone { display: inline-flex; align-items: center; gap: 10px; font-family: var(--serif); font-size: 1.9rem; color: var(--ink); text-decoration: none; font-variant-numeric: tabular-nums; }
.drawer-contact__phone .icon { color: var(--patina); width: 26px; height: 26px; }
.drawer-contact__row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.drawer-contact__addr { margin: 0; font-size: var(--fs-sm); color: var(--muted); }
body.menu-open { overflow: hidden; }

/* ---------- Bölümler ---------- */
.section { padding-block: var(--space); }
.section--tight { padding-block: calc(var(--space) * 0.65); }
.section--line { border-top: 1px solid var(--line); }
.section--sheet { background: var(--sheet); border-block: 1px solid var(--line-soft); }
.section--ink { background: var(--ink); color: var(--on-dark); --focus: var(--copper-light); }
.section--ink a:not(.btn) { color: var(--patina-light); }
.section-head { max-width: 760px; margin-bottom: clamp(32px, 4vw, 56px); }
.section-head p { color: var(--muted); font-size: var(--fs-lg); margin: 0; }
.section--ink .section-head p { color: var(--on-dark-muted); }
.section-head p.kicker { margin-bottom: 1.25rem; font-size: var(--fs-xs); color: var(--muted); }
.section-head--row { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 16px 32px; max-width: none; }
.section-head--row h2 { margin: 0; }
.split { display: grid; gap: clamp(28px, 5vw, 80px); }
@media (min-width: 900px) {
  .split { grid-template-columns: 5fr 7fr; }
  .split--even { grid-template-columns: 1fr 1fr; }
  .split--rev { grid-template-columns: 7fr 5fr; }
}

/* ---------- Ana sayfa: hero ---------- */
.hero { position: relative; padding-block: clamp(36px, 6vw, 88px) 0; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: repeating-linear-gradient(90deg, transparent 0 calc(100% / 12 - 1px), rgba(21, 33, 43, 0.05) calc(100% / 12 - 1px) calc(100% / 12));
  -webkit-mask-image: linear-gradient(to bottom, #000 40%, transparent);
  mask-image: linear-gradient(to bottom, #000 40%, transparent);
}
.hero__grid { position: relative; display: grid; gap: clamp(36px, 5vw, 64px); align-items: center; }
.hero h1 { font-size: var(--fs-display); max-width: 11.5em; margin-bottom: 0.4em; }
.hero__lead { font-size: var(--fs-lg); color: var(--muted); max-width: 34em; margin-bottom: 2rem; }
.hero__lead strong { color: var(--text); font-weight: 500; }
@media (min-width: 1000px) {
  .hero__grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr); align-items: center; }
  .hero h1 { font-size: clamp(2.6rem, 1.2rem + 3.4vw, 4.7rem); }
}

.facts {
  position: relative; display: grid; grid-template-columns: 1fr; margin: clamp(40px, 6vw, 80px) 0 0; padding: 0;
  border-top: 1px solid var(--ink); list-style: none;
}
.facts li { padding: 18px 0; border-bottom: 1px solid var(--line); }
.facts__label { display: block; margin-bottom: 4px; font-size: var(--fs-xs); font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.facts__value { font-weight: 500; color: var(--ink); text-decoration: none; }
a.facts__value:hover { color: var(--patina); }
@media (min-width: 640px) {
  .facts { grid-template-columns: 1fr 1fr; }
  .facts li:nth-child(odd) { padding-right: 24px; }
}
@media (min-width: 1080px) {
  .facts { grid-template-columns: 1.5fr 1fr 1fr 1.2fr; }
  .facts li { padding: 22px 24px 22px 0; border-bottom: 0; }
  .facts li + li { padding-left: 24px; border-left: 1px solid var(--line); }
}

/* ---------- Teknik sistem şeması (hero modülü) ----------
   Çizim sistemi: metal = mürekkep · bağlantı elemanı = bakır · membran = patina kesikli
   buhar kontrolü = noktalı · ahşap = meşe dolgu · yalıtım = dalgalı tarama · su = patina */
.sysx { --sysx-pad: clamp(16px, 2.4vw, 26px); container-type: inline-size; position: relative; background: var(--sheet); border: 1px solid var(--line); }
.sx-defs { position: absolute; width: 0; height: 0; overflow: hidden; color: var(--muted); }
.sysx__bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 54px; padding: 6px 8px 6px var(--sysx-pad); border-bottom: 1px solid var(--line); }
.sysx__eyebrow { display: flex; align-items: center; gap: 0.8em; margin: 0; font-size: var(--fs-xs); font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.sysx__eyebrow::before { content: ""; width: 7px; height: 7px; border: 1px solid var(--copper); transform: rotate(45deg); }
.sysx__nav { display: flex; gap: 2px; }
.sysx__btn {
  display: grid; place-items: center; width: 42px; height: 42px; padding: 0;
  border: 1px solid transparent; background: none; color: var(--ink); cursor: pointer;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.sysx__btn:hover { background: var(--paper); border-color: var(--line); }
.sysx__btn .icon { width: 18px; height: 18px; }
.sysx__prev-icon { transform: rotate(180deg); }
.sysx__pause { position: relative; width: 10px; height: 12px; border-left: 2px solid currentColor; border-right: 2px solid currentColor; }
.sysx__btn--play[data-paused="true"] .sysx__pause { width: 0; height: 0; border: 0; border-left: 10px solid currentColor; border-top: 6px solid transparent; border-bottom: 6px solid transparent; margin-left: 3px; }

.sysx__track { padding: clamp(20px, 3vw, 30px) var(--sysx-pad) 0; touch-action: pan-y; }
.sysx.is-ready .sysx__track { display: grid; }
.sysx.is-ready .sysx__slide {
  grid-area: 1 / 1; opacity: 0; visibility: hidden; transform: translateX(10px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease), visibility 0s linear 0.7s;
}
.sysx.is-ready .sysx__slide.is-active { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
.sysx:not(.is-ready) .sysx__slide + .sysx__slide { margin-top: 28px; padding-top: 24px; border-top: 1px solid var(--line); }
.sysx__title { margin: 0 0 0.3em; font-size: clamp(1.5rem, 1.25rem + 1vw, 2.05rem); line-height: 1.12; }
.sysx__desc { max-width: 44em; margin: 0 0 20px; font-size: var(--fs-sm); line-height: 1.6; color: var(--muted); }
.sysx__desc a { font-weight: 500; white-space: nowrap; }
.sysx__figure { margin: 0; }
.sysx__drawing {
  padding: clamp(8px, 1.6vw, 14px) 0 4px;
  background-image: linear-gradient(rgba(21, 33, 43, 0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(21, 33, 43, 0.045) 1px, transparent 1px);
  background-size: 24px 24px; background-position: -1px -1px;
  border-top: 1px solid var(--line-soft);
}
.sx { display: block; width: 100%; height: auto; overflow: visible; }
.sx--narrow { display: none; }
@container (max-width: 459px) {
  .sx--wide { display: none; }
  .sx--narrow { display: block; }
}
.sx-view { font: 600 var(--sx-font) var(--sans); letter-spacing: 0.16em; fill: var(--muted); }
.sx-side { font: 500 calc(var(--sx-font) - 1px) var(--sans); letter-spacing: 0.16em; fill: var(--muted); opacity: 0.85; }
.sx-frame { fill: var(--sheet); stroke: var(--line); stroke-width: 1; }
.sx-metal { fill: none; stroke: var(--ink); stroke-width: 2.4; stroke-linejoin: round; stroke-linecap: round; }
.sx-metal--detail { stroke-width: 3; }
.sx-metal-fill { fill: var(--ink); }
.sx-wood { fill: #ddcdaf; stroke: var(--ink); stroke-width: 0.9; }
.sx-ins { fill: url(#sx-dolgu); stroke: none; }
.sx-line { fill: none; stroke: var(--ink); stroke-width: 0.9; }
.sx-sheet { fill: var(--sheet); stroke: var(--ink); stroke-width: 1.3; stroke-linejoin: round; }
.sx-wall { fill: url(#sx-tarama); stroke: var(--ink); stroke-width: 1; }
.sx-membrane { fill: none; stroke: var(--patina); stroke-width: 2; stroke-dasharray: 7 4; }
.sx-vapor { fill: none; stroke: var(--muted); stroke-width: 1.5; stroke-dasharray: 0.5 4; stroke-linecap: round; }
.sx-link { fill: none; stroke: var(--copper); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.sx-water { fill: #cfe2dc; }
.sx-flow { fill: none; stroke: var(--patina); stroke-width: 1.6; stroke-linecap: round; marker-end: url(#sx-ok); }
.sx-arrow { fill: var(--patina); }
.sx-break { fill: none; stroke: var(--ink); stroke-width: 1; stroke-linejoin: round; }
.sx-leader { fill: none; stroke: var(--ink); stroke-width: 0.75; opacity: 0.8; }
.sx-dot { fill: var(--ink); }
.sx-tag circle:not(.sx-dot) { fill: var(--sheet); stroke: var(--ink); stroke-width: 1; }
.sx-tag text { font: 600 var(--sx-tag) var(--sans); text-anchor: middle; fill: var(--ink); }

.sysx__keys {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); grid-template-rows: repeat(4, auto); grid-auto-flow: column;
  gap: 9px 18px; margin: 0; padding: 16px 0 20px; border-top: 1px solid var(--line-soft); list-style: none; font-size: 0.85rem; line-height: 1.3; color: var(--text);
}
.sysx__keys li { display: flex; align-items: center; gap: 9px; min-width: 0; }
.sysx__key { display: inline-grid; place-items: center; flex: none; width: 21px; height: 21px; border: 1px solid var(--ink); border-radius: 50%; font-size: 0.68rem; font-weight: 600; background: var(--sheet); }
@container (max-width: 340px) { .sysx__keys { gap: 8px 12px; font-size: 0.8rem; } .sysx__keys li { gap: 7px; } }

.sysx__foot { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0 16px; padding: 0 var(--sysx-pad); border-top: 1px solid var(--line); }
.sysx__tabs { display: flex; gap: clamp(16px, 3vw, 28px); }
.sysx__tab {
  position: relative; min-height: 48px; padding: 0; border: 0; background: none; cursor: pointer;
  font-size: var(--fs-sm); font-weight: 500; color: var(--muted); transition: color 0.2s var(--ease);
}
.sysx__tab:hover, .sysx__tab[aria-current="true"] { color: var(--ink); }
.sysx__progress { position: absolute; left: 0; right: 0; top: -1px; height: 2px; overflow: hidden; }
.sysx__progress::after { content: ""; position: absolute; inset: 0; background: var(--patina); transform: scaleX(0); transform-origin: left; }
.sysx__tab[aria-current="true"] .sysx__progress::after { transform: scaleX(1); }
.sysx.is-playing .sysx__tab[aria-current="true"] .sysx__progress::after { animation: sysx-progress var(--sysx-delay, 8s) linear both; }
@keyframes sysx-progress { from { transform: scaleX(0); } to { transform: scaleX(1); } }
.sysx__note { margin: 0; padding-block: 14px; font-size: var(--fs-xs); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
@container (max-width: 400px) { .sysx__note { width: 100%; padding-top: 0; } }

/* ---------- Malzeme dokuları (yer tutucu ve rozetler) ---------- */
.tex { --s: 1; display: block; background-color: var(--ink-2); }
.tex--kenet {
  background-color: #285650;
  background-image:
    linear-gradient(112deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0) 42%, rgba(0, 0, 0, 0.22)),
    repeating-linear-gradient(90deg, transparent 0 calc(var(--s) * 40px), rgba(255, 255, 255, 0.24) calc(var(--s) * 40px) calc(var(--s) * 40px + 1px), rgba(0, 0, 0, 0.3) calc(var(--s) * 40px + 1px) calc(var(--s) * 40px + 3px), transparent calc(var(--s) * 40px + 3px) calc(var(--s) * 42px));
}
.tex--trapez {
  background-color: #5b6770;
  background-image:
    linear-gradient(100deg, rgba(255, 255, 255, 0.1), rgba(0, 0, 0, 0.2)),
    repeating-linear-gradient(90deg, transparent 0 calc(var(--s) * 9px), rgba(255, 255, 255, 0.2) calc(var(--s) * 9px) calc(var(--s) * 13px), transparent calc(var(--s) * 13px) calc(var(--s) * 25px), rgba(0, 0, 0, 0.26) calc(var(--s) * 25px) calc(var(--s) * 29px), transparent calc(var(--s) * 29px) calc(var(--s) * 38px));
}
.tex--oluk {
  background-color: #8f5333;
  background-image:
    radial-gradient(130% 70% at 50% 118%, rgba(0, 0, 0, 0.32), transparent 62%),
    linear-gradient(160deg, rgba(255, 255, 255, 0.16), transparent 50%),
    repeating-linear-gradient(180deg, transparent 0 calc(var(--s) * 24px), rgba(255, 255, 255, 0.18) calc(var(--s) * 24px) calc(var(--s) * 25px), rgba(0, 0, 0, 0.22) calc(var(--s) * 25px) calc(var(--s) * 27px));
}
.tex--izolasyon {
  background-color: #e2d5bb;
  background-image:
    repeating-linear-gradient(45deg, rgba(21, 33, 43, 0.09) 0 1px, transparent 1px calc(var(--s) * 9px)),
    linear-gradient(180deg, #1d2c38 0 17%, #c4ad86 17% 19.5%, transparent 19.5% 60%, #2d6a61 60% 63%, #b8a581 63% 100%);
}
.tex--sistem {
  --a: rgba(255, 255, 255, 0.07);
  background-color: #1d2c38;
  background-image:
    linear-gradient(135deg, var(--a) 25%, transparent 25%), linear-gradient(225deg, var(--a) 25%, transparent 25%),
    linear-gradient(315deg, var(--a) 25%, transparent 25%), linear-gradient(45deg, var(--a) 25%, transparent 25%);
  background-size: calc(var(--s) * 56px) calc(var(--s) * 56px);
  background-position: calc(var(--s) * -28px) 0, calc(var(--s) * -28px) 0, 0 0, 0 0;
}

/* Fotoğraf yer tutucusu: oran korunur, gerçek fotoğrafla birebir değiştirilebilir */
.photo-slot { position: relative; margin: 0; aspect-ratio: var(--ratio, 16 / 9); overflow: hidden; background: var(--paper-2); }
.photo-slot > img { width: 100%; height: 100%; object-fit: cover; }
.photo-slot__surface { position: absolute; inset: 0; }
.photo-slot__surface::before, .photo-slot__surface::after {
  content: ""; position: absolute; width: 22px; height: 22px; border: 1px solid rgba(244, 242, 237, 0.7);
}
.photo-slot__surface::before { top: 14px; left: 14px; border-right: 0; border-bottom: 0; }
.photo-slot__surface::after { right: 14px; bottom: 14px; border-left: 0; border-top: 0; }
.photo-slot__tag {
  position: absolute; left: 14px; bottom: 14px; padding: 6px 10px;
  background: rgba(15, 24, 32, 0.72); color: var(--paper);
  font-size: 0.7rem; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; line-height: 1.3;
}
.photo-slot--wide { aspect-ratio: 16 / 10; margin-top: clamp(28px, 4vw, 56px); }
@media (min-width: 900px) { .photo-slot--wide { aspect-ratio: var(--ratio); } }
.photo-slot--izolasyon .photo-slot__surface::before, .photo-slot--izolasyon .photo-slot__surface::after { border-color: rgba(21, 33, 43, 0.5); }

/* ---------- Hizmet dizini ---------- */
.svc-rows { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--ink); }
.svc-row {
  position: relative; display: grid; gap: 12px 20px; grid-template-columns: 56px minmax(0, 1fr) 24px; align-items: center;
  padding: 24px 0; border-bottom: 1px solid var(--line); transition: background-color 0.25s var(--ease);
}
.svc-row__tex { --s: 0.5; width: 56px; height: 56px; grid-row: 1; grid-column: 1; }
.svc-row__title { grid-column: 2; margin: 0; font-size: clamp(1.4rem, 1.2rem + 0.9vw, 2.05rem); }
.svc-row__title a { color: var(--ink); text-decoration: none; }
.svc-row__lead { grid-column: 1 / -1; margin: 0; color: var(--muted); }
.svc-row__points { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; }
.svc-row__points li { padding: 4px 10px; border: 1px solid var(--line); font-size: 0.8rem; color: var(--ink-3); line-height: 1.4; background: var(--sheet); }
.svc-row__go { grid-row: 1; grid-column: 3; color: var(--patina); transition: transform 0.25s var(--ease); }
.svc-row__go .icon { width: 22px; height: 22px; }
.svc-row:hover .svc-row__title a { color: var(--patina-deep); }
.svc-row:hover .svc-row__go { transform: translateX(5px); }
.svc-row:focus-within { background: var(--sheet); }
@media (min-width: 900px) {
  .svc-row { grid-template-columns: 72px minmax(0, 1.05fr) minmax(0, 1fr) minmax(0, 0.95fr) 40px; gap: 32px; padding: 30px 12px 30px 0; }
  .svc-row:hover { background: linear-gradient(90deg, transparent, var(--sheet) 30%); }
  .svc-row__tex { --s: 0.6; width: 72px; height: 72px; }
  .svc-row__lead { grid-column: 3; }
  .svc-row__points { grid-column: 4; flex-direction: column; gap: 4px; }
  .svc-row__points li { padding: 0 0 0 16px; border: 0; background: none; position: relative; font-size: var(--fs-sm); }
  .svc-row__points li::before { content: ""; position: absolute; left: 0; top: 0.7em; width: 8px; height: 1px; background: var(--copper); }
  .svc-row__go { grid-column: 5; justify-self: end; }
}

/* Mini hizmet kartları */
.mini-svc { display: grid; gap: 1px; margin: 0; padding: 0; list-style: none; background: var(--line); border: 1px solid var(--line); }
.mini-svc li { position: relative; display: grid; grid-template-columns: 44px 1fr; gap: 4px 16px; align-content: start; padding: 22px; background: var(--paper); transition: background-color 0.2s; }
.mini-svc li:hover, .mini-svc li:focus-within { background: var(--sheet); }
.mini-svc__tex { --s: 0.36; width: 44px; height: 44px; grid-row: span 2; }
.mini-svc a { font-family: var(--serif); font-size: 1.25rem; line-height: 1.25; color: var(--ink); text-decoration: none; }
.mini-svc li:hover a { color: var(--patina-deep); }
.mini-svc p { margin: 0; font-size: var(--fs-sm); color: var(--muted); line-height: 1.5; }
@media (min-width: 700px) { .mini-svc { grid-template-columns: 1fr 1fr; } .mini-svc--5 > li:last-child:nth-child(odd) { grid-column: 1 / -1; } }
@media (min-width: 1100px) { .mini-svc { grid-template-columns: repeat(4, 1fr); } .mini-svc--5 { grid-template-columns: repeat(5, 1fr); } .mini-svc--5 > li:last-child:nth-child(odd) { grid-column: auto; } .mini-svc li { grid-template-columns: 1fr; } .mini-svc__tex { grid-row: auto; margin-bottom: 12px; } }

/* ---------- Sistem (koyu) ---------- */
.layers { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; counter-reset: none; }
.layers li { padding: 26px 0; border-top: 1px solid var(--line-dark); }
.layers h3 { margin-bottom: 0.4em; font-size: 1.45rem; color: #fff; }
.layers p { margin: 0; color: var(--on-dark-muted); font-size: 0.97rem; }
.layers__label { display: block; margin-bottom: 10px; font-size: var(--fs-xs); letter-spacing: 0.16em; text-transform: uppercase; color: var(--copper-light); }
@media (min-width: 700px) { .layers { grid-template-columns: 1fr 1fr; column-gap: 40px; } }
@media (min-width: 1100px) { .layers { grid-template-columns: repeat(4, 1fr); } .layers li { padding-right: 8px; } }
.sys-intro { display: grid; gap: 24px 64px; margin-bottom: clamp(36px, 5vw, 64px); }
.sys-intro h2 { margin: 0; max-width: 14em; }
.sys-intro p { margin: 0; color: var(--on-dark-muted); font-size: var(--fs-lg); }
@media (min-width: 1000px) { .sys-intro { grid-template-columns: 7fr 5fr; align-items: end; } }

/* ---------- Süreç ---------- */
.steps { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; }
.steps li { position: relative; padding: 0 0 32px 36px; }
.steps li::before { content: ""; position: absolute; left: 5px; top: 10px; bottom: -10px; width: 1px; background: var(--line); }
.steps li:last-child::before { display: none; }
.steps li::after { content: ""; position: absolute; left: 0; top: 6px; width: 11px; height: 11px; background: var(--paper); border: 1px solid var(--ink); transform: rotate(45deg); }
.steps h3 { margin-bottom: 0.35em; font-size: 1.4rem; }
.steps p { margin: 0; color: var(--muted); }
@media (min-width: 900px) {
  .steps { grid-template-columns: repeat(4, 1fr); gap: 32px; }
  .steps li { padding: 36px 0 0; }
  .steps li::before { left: 18px; right: -32px; top: 6px; bottom: auto; width: auto; height: 1px; }
  .steps li::after { top: 0; }
}

/* ---------- Projeler önizleme ---------- */
.stack { display: grid; gap: 14px; grid-template-columns: 1fr 1fr; }
.stack .photo-slot:first-child { grid-column: 1 / -1; }
@media (min-width: 900px) {
  .stack { grid-template-columns: 1.2fr 1fr; grid-template-rows: auto auto; }
  .stack .photo-slot:first-child { grid-column: 1; grid-row: 1 / span 2; }
}

/* ---------- Hizmet bölgesi ---------- */
.area-list { display: grid; gap: 0; margin: 28px 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.area-list li { display: grid; gap: 2px; padding: 14px 0; border-bottom: 1px solid var(--line); }
@media (min-width: 560px) { .area-list li { grid-template-columns: 9em 1fr; gap: 16px; } }
.area-list dt, .area-list__k { font-size: var(--fs-xs); font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); padding-top: 3px; }
.area-list__v { color: var(--ink); }
.area-list__v a { color: var(--ink); }

/* Harita */
.map__frame { position: relative; aspect-ratio: 4 / 3; background: var(--paper-2); border: 1px solid var(--line); overflow: hidden; }
@media (min-width: 900px) { .map__frame { aspect-ratio: 16 / 11; } }
.map__frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.map__placeholder {
  position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px;
  padding: 24px; text-align: center;
  background-image:
    linear-gradient(rgba(21, 33, 43, 0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(21, 33, 43, 0.06) 1px, transparent 1px),
    linear-gradient(rgba(21, 33, 43, 0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(21, 33, 43, 0.035) 1px, transparent 1px);
  background-size: 96px 96px, 96px 96px, 24px 24px, 24px 24px;
}
.map__pin { width: 34px; height: 34px; color: var(--copper); }
.map__addr { max-width: 22em; margin: 0; font-family: var(--serif); font-size: 1.25rem; line-height: 1.3; color: var(--ink); }
.map__note { max-width: 26em; margin: 0; font-size: var(--fs-xs); color: var(--muted); }
.map__links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }

/* ---------- Blog listeleri ---------- */
.posts { display: grid; gap: 0; margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--ink); }
.post-card { position: relative; display: flex; flex-direction: column; padding: 24px 0 28px; border-bottom: 1px solid var(--line); }
.post-card__meta { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-bottom: 10px; font-size: var(--fs-xs); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.post-card__cat { color: var(--patina-deep); font-weight: 500; }
.post-card h2, .post-card h3 { margin-bottom: 0.45em; font-size: clamp(1.3rem, 1.15rem + 0.6vw, 1.6rem); line-height: 1.22; }
.post-card h2 a, .post-card h3 a { color: var(--ink); text-decoration: none; }
.post-card:hover h2 a, .post-card:hover h3 a { color: var(--patina-deep); }
.post-card p { margin: 0 0 14px; color: var(--muted); font-size: 0.97rem; }
.post-card__more { margin-top: auto; display: inline-flex; align-items: center; gap: 8px; font-size: var(--fs-sm); font-weight: 500; color: var(--ink); }
.post-card__more .icon { transition: transform 0.25s var(--ease); }
.post-card:hover .post-card__more .icon { transform: translateX(4px); }
@media (min-width: 760px) {
  .posts--3 { grid-template-columns: repeat(3, 1fr); column-gap: 32px; }
  .posts--2 { grid-template-columns: 1fr 1fr; column-gap: 40px; }
}

/* Blog dizini: konu başlığı solda, yazılar sağda */
.blog-groups { padding-block: clamp(32px, 5vw, 72px) var(--space); }
.blog-group { display: grid; gap: 8px 48px; padding-block: 28px 8px; border-top: 1px solid var(--ink); }
.blog-group + .blog-group { margin-top: clamp(32px, 4vw, 56px); }
.blog-group__head h2 { margin: 0 0 4px; font-size: var(--fs-h3); }
.blog-group__head p { margin: 0; font-size: var(--fs-sm); color: var(--muted); }
.blog-group .posts { border-top: 0; }
.blog-group .post-card:first-child { padding-top: 6px; }
.blog-group .post-card:last-child { border-bottom: 0; }
@media (min-width: 900px) {
  .blog-group { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); }
  .blog-group__head { position: sticky; top: calc(var(--header-h) + 24px); align-self: start; }
}

/* ---------- SSS ---------- */
.faq { max-width: 860px; }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__item:first-of-type { border-top: 1px solid var(--ink); }
.faq summary {
  position: relative; display: block; padding: 20px 44px 20px 0; cursor: pointer; list-style: none;
  font-family: var(--serif); font-size: clamp(1.12rem, 1.05rem + 0.35vw, 1.3rem); line-height: 1.35; color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before, .faq summary::after {
  content: ""; position: absolute; right: 6px; top: 50%; width: 16px; height: 1.5px; background: var(--patina); transition: transform 0.25s var(--ease);
}
.faq summary::after { transform: rotate(90deg); }
.faq details[open] summary::after { transform: rotate(0deg); }
.faq summary:hover { color: var(--patina-deep); }
.faq__body { padding: 0 0 22px; color: var(--muted); max-width: 46em; }
.faq__body p:last-child { margin-bottom: 0; }

/* ---------- Kapanış ---------- */
.cta-band { position: relative; padding-block: clamp(56px, 7vw, 104px); background: var(--patina-deep); color: #fff; overflow: hidden; --focus: var(--copper-light); }
.cta-band::before {
  content: ""; position: absolute; inset: 0; opacity: 0.5; pointer-events: none;
  background-image: repeating-linear-gradient(90deg, transparent 0 63px, rgba(255, 255, 255, 0.08) 63px 64px, rgba(0, 0, 0, 0.18) 64px 66px);
  -webkit-mask-image: linear-gradient(90deg, transparent 30%, #000);
  mask-image: linear-gradient(90deg, transparent 30%, #000);
}
.cta-band__grid { position: relative; display: grid; gap: 28px; align-items: end; }
.cta-band h2 { margin-bottom: 0.4em; max-width: 16em; }
.cta-band p { margin: 0; max-width: 40em; color: rgba(255, 255, 255, 0.82); }
.cta-band .btn--line-light { --b: rgba(255, 255, 255, 0.55); color: #fff; }
.cta-band .btn--whatsapp { --b: rgba(255, 255, 255, 0.55); }
@media (min-width: 1000px) { .cta-band__grid { grid-template-columns: 1fr auto; gap: 64px; } .cta-band .actions { flex-direction: column; align-items: stretch; } }

/* ---------- Alt sayfa başlığı ---------- */
.page-head { padding-block: clamp(24px, 3vw, 36px) clamp(40px, 6vw, 80px); border-bottom: 1px solid var(--line); }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 4px 0; margin: 0 0 clamp(28px, 4vw, 48px); padding: 0; list-style: none; font-size: var(--fs-sm); color: var(--muted); }
.crumbs li + li::before { content: "/"; margin: 0 10px; color: var(--line); }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--patina); text-decoration: underline; }
.crumbs [aria-current] { color: var(--ink); }
.page-head__grid { display: grid; gap: 32px clamp(32px, 6vw, 96px); align-items: end; }
.page-head h1 { margin-bottom: 0.35em; max-width: 14em; }
.page-head__lead { margin: 0; font-size: var(--fs-lg); color: var(--muted); max-width: 36em; }
@media (min-width: 1000px) { .page-head__grid:not(.page-head__grid--solo) { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); } }

.summary { padding: 22px 24px; background: var(--sheet); border: 1px solid var(--line); border-left: 3px solid var(--patina); }
.summary__label { margin: 0 0 8px; font-size: var(--fs-xs); font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--patina-deep); }
.summary__text { margin: 0; color: var(--text); }

/* ---------- Doküman düzeni (hizmet + blog) ---------- */
.doc { display: grid; grid-template-columns: minmax(0, 1fr); gap: 40px; padding-block: clamp(40px, 6vw, 88px); }
.doc > * { min-width: 0; }
.doc__side { display: grid; gap: 24px; align-content: start; }
@media (min-width: 1000px) {
  .doc { grid-template-columns: 280px minmax(0, 1fr); gap: clamp(48px, 6vw, 104px); }
  .doc__side { position: sticky; top: calc(var(--header-h) + 28px); align-self: start; max-height: calc(100vh - var(--header-h) - 40px); overflow: auto; }
}
.toc { padding: 0 0 4px; }
.toc__label { margin: 0 0 10px; font-size: var(--fs-xs); font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.toc ol { margin: 0; padding: 0; list-style: none; border-left: 1px solid var(--line); }
.toc a { display: block; margin-left: -1px; padding: 6px 0 6px 14px; border-left: 1px solid transparent; font-size: var(--fs-sm); color: var(--muted); text-decoration: none; line-height: 1.45; }
.toc a:hover { color: var(--ink); border-left-color: var(--ink); }
.toc a.is-active { color: var(--patina-deep); border-left-color: var(--patina); }
@media (max-width: 999px) { .toc { padding: 18px 20px; background: var(--sheet); border: 1px solid var(--line); } .toc ol { border: 0; } .toc a { padding-left: 0; border: 0; } }

.side-contact { display: grid; gap: 12px; padding: 22px; background: var(--ink); color: var(--on-dark); --focus: var(--copper-light); }
.side-contact__text { margin: 0; font-size: var(--fs-sm); color: var(--on-dark-muted); }
.side-contact__phone { display: inline-flex; align-items: center; gap: 10px; font-family: var(--serif); font-size: 1.55rem; color: #fff; text-decoration: none; font-variant-numeric: tabular-nums; }
.side-contact__phone .icon { color: var(--patina-light); }
.side-contact__phone:hover { color: var(--patina-light); }
.side-contact__mail { font-size: var(--fs-sm); color: var(--patina-light); word-break: break-all; }
.side-contact__mail:hover { color: #fff; }

/* Okuma metni */
.prose { max-width: 46em; }
.prose > :first-child, .prose > section:first-child > h2:first-child { margin-top: 0; }
.prose h2 { margin-top: 2.1em; font-size: clamp(1.6rem, 1.3rem + 1.2vw, 2.25rem); }
.prose h3 { margin-top: 1.7em; font-family: var(--sans); font-size: 1.12rem; font-weight: 600; letter-spacing: 0; }
.prose ul, .prose ol { padding-left: 0; list-style: none; }
.prose li { position: relative; margin-bottom: 0.55em; padding-left: 26px; }
.prose ul > li::before { content: ""; position: absolute; left: 2px; top: 0.82em; width: 12px; height: 1px; background: var(--copper); }
.prose ol { counter-reset: adim; }
.prose ol > li { counter-increment: adim; }
.prose ol > li::before { content: counter(adim); position: absolute; left: 0; top: 0.2em; width: 18px; font-size: 0.8rem; font-weight: 600; color: var(--patina-deep); }
.prose .summary { margin: 0 0 2em; }
.prose .photo-slot { margin: 2em 0; }
.prose blockquote { margin: 1.8em 0; padding: 4px 0 4px 22px; border-left: 2px solid var(--copper); font-family: var(--serif); font-size: 1.3rem; line-height: 1.45; color: var(--ink); }
.note { margin: 1.8em 0; padding: 18px 20px; background: var(--patina-soft); border: 1px solid #c9dad4; font-size: 0.97rem; }
.note p:last-child { margin: 0; }
.note strong { color: var(--patina-deep); }

.spec { display: grid; margin: 1.4em 0 2em; border-top: 1px solid var(--ink); }
.spec > div { display: grid; gap: 4px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.spec dt { font-weight: 600; color: var(--ink); }
.spec dd { margin: 0; color: var(--muted); }
@media (min-width: 640px) { .spec > div { grid-template-columns: 13em 1fr; gap: 24px; } }

.table-wrap { margin: 1.6em 0 2em; overflow-x: auto; border: 1px solid var(--line); background: var(--sheet); }
.table-wrap:focus-visible { outline-offset: 0; }
table { width: 100%; margin: 0; border-collapse: collapse; font-size: 0.93rem; }
caption { padding: 12px 16px; text-align: left; font-size: var(--fs-xs); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); border-bottom: 1px solid var(--line); }
th, td { padding: 12px 16px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line-soft); }
thead th { font-weight: 600; color: var(--ink); background: var(--paper-2); white-space: nowrap; }
tbody th { font-weight: 600; color: var(--ink); }
tr:last-child > * { border-bottom: 0; }

.prose-cta { display: grid; gap: 16px; margin: 2.6em 0 0; padding: 26px; border: 1px solid var(--ink); background: var(--sheet); }
.prose-cta p { margin: 0; }
.prose-cta__title { font-family: var(--serif); font-size: 1.45rem; line-height: 1.25; color: var(--ink); }

/* ---------- Hizmetler sayfası ---------- */
.svc-block { display: grid; gap: 28px; padding-block: clamp(40px, 6vw, 80px); border-top: 1px solid var(--line); }
.svc-block:first-child { border-top: 0; }
.svc-block h2 { margin-bottom: 0.35em; }
.svc-block h2 a { color: var(--ink); text-decoration: none; }
.svc-block h2 a:hover { color: var(--patina-deep); }
.svc-block__text > p { color: var(--muted); font-size: var(--fs-lg); max-width: 34em; }
.svc-block__list { margin: 0 0 1.6em; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.svc-block__list li { padding: 10px 0 10px 22px; border-bottom: 1px solid var(--line-soft); position: relative; }
.svc-block__list li::before { content: ""; position: absolute; left: 0; top: 1.3em; width: 10px; height: 1px; background: var(--copper); }
@media (min-width: 900px) {
  .svc-block { grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(40px, 6vw, 96px); align-items: center; }
  .svc-block:nth-child(even) .svc-block__media { order: 2; }
}

/* ---------- Kurumsal / ilkeler ---------- */
.principles { display: grid; gap: 1px; margin: 0; padding: 0; list-style: none; background: var(--line); border: 1px solid var(--line); }
.principles li { padding: clamp(22px, 3vw, 34px); background: var(--paper); }
.principles h3 { margin-bottom: 0.4em; font-size: 1.4rem; }
.principles p { margin: 0; color: var(--muted); }
@media (min-width: 700px) { .principles { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1100px) { .principles { grid-template-columns: repeat(3, 1fr); } }
.statement { font-family: var(--serif); font-size: clamp(1.45rem, 1.15rem + 1.3vw, 2.3rem); line-height: 1.32; color: var(--ink); max-width: 30em; margin: 0; }
.statement em { color: var(--patina); }

/* ---------- İletişim ---------- */
.contact-hero-phone { display: inline-block; margin: 6px 0 4px; font-family: var(--serif); font-size: clamp(2.2rem, 1.6rem + 3vw, 3.8rem); line-height: 1.05; color: var(--ink); text-decoration: none; font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.contact-hero-phone:hover { color: var(--patina); }
.contact-grid { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); margin: 0; padding: 0; list-style: none; }
.contact-card { display: grid; align-content: start; gap: 8px; padding: clamp(22px, 3vw, 32px); background: var(--paper); }
.contact-card h2, .contact-card h3 { margin: 0 0 6px; font-size: var(--fs-xs); font-family: var(--sans); font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); }
.contact-card__big { font-family: var(--serif); font-size: 1.55rem; line-height: 1.25; color: var(--ink); text-decoration: none; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
a.contact-card__big:hover { color: var(--patina); }
.contact-card p { margin: 0; color: var(--muted); font-size: var(--fs-sm); }
.contact-card .btn { justify-self: start; margin-top: 8px; }
.tel-list { margin: 0; padding: 0; list-style: none; }
.tel-list li { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 12px; padding: 9px 0; border-bottom: 1px solid var(--line-soft); }
.tel-list li:last-child { border-bottom: 0; }
.tel-list a { font-weight: 500; color: var(--ink); text-decoration: none; font-variant-numeric: tabular-nums; }
.tel-list a:hover { color: var(--patina); text-decoration: underline; }
.tel-list span { color: var(--muted); font-size: var(--fs-sm); }
.tel-list .contact-fax { font-size: inherit; font-weight: 500; color: var(--ink); font-variant-numeric: tabular-nums; }
.contact-card__mail { font-size: 1.2rem; }
.contact-address { margin: 8px 0 18px; }
.page-head__aside .actions { margin-top: 18px; }
.page-head__aside .kicker { margin-bottom: 0.5rem; }
@media (min-width: 700px) { .contact-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1100px) { .contact-grid { grid-template-columns: repeat(4, 1fr); } }
.checklist { margin: 0; padding: 0; list-style: none; counter-reset: c; border-top: 1px solid var(--ink); }
.checklist li { position: relative; padding: 14px 0 14px 40px; border-bottom: 1px solid var(--line); }
.checklist li::before { content: ""; position: absolute; left: 4px; top: 21px; width: 14px; height: 8px; border-left: 1.5px solid var(--patina); border-bottom: 1.5px solid var(--patina); transform: rotate(-45deg); }

/* ---------- Projeler ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 32px; padding: 0; list-style: none; }
.filter-btn { min-height: 40px; padding: 6px 16px; border: 1px solid var(--line); background: transparent; color: var(--ink); font-size: var(--fs-sm); cursor: pointer; }
.filter-btn:hover { border-color: var(--ink); }
.filter-btn[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.portfolio { display: grid; gap: clamp(40px, 6vw, 72px); }
.pf-group[hidden] { display: none; }
.pf-group__head { display: grid; gap: 8px 40px; margin-bottom: 22px; padding-top: 18px; border-top: 1px solid var(--ink); }
.pf-group__head h2 { margin: 0; font-size: clamp(1.6rem, 1.3rem + 1.2vw, 2.3rem); }
.pf-group__head p { margin: 0; color: var(--muted); max-width: 40em; }
.pf-group__head a { font-size: var(--fs-sm); font-weight: 500; }
@media (min-width: 900px) { .pf-group__head { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); align-items: end; } }
.pf-grid { display: grid; gap: 14px; margin: 0; padding: 0; list-style: none; }
.pf-item { margin: 0; }
/* Yer tutucularda tekdüzeliği kırmak için hafif ton/ölçek farkı */
.pf-grid > li:nth-child(2) .tex { --s: 0.75; filter: brightness(1.1) saturate(0.85); }
.pf-grid > li:nth-child(3) .tex { --s: 1.35; filter: brightness(0.9); }
.pf-item figcaption { padding-top: 10px; font-size: var(--fs-sm); color: var(--muted); }
.pf-item figcaption strong { display: block; color: var(--ink); font-weight: 500; }
@media (min-width: 600px) { .pf-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .pf-grid { grid-template-columns: 2fr 1fr 1fr; } .pf-grid > li:first-child .photo-slot { aspect-ratio: auto; height: 100%; min-height: 100%; } }

/* ---------- 404 ---------- */
.notfound { padding-block: clamp(56px, 9vw, 128px); }
.notfound__code { display: block; margin-bottom: 8px; font-family: var(--serif); font-size: clamp(5rem, 3rem + 10vw, 11rem); line-height: 0.9; color: transparent; -webkit-text-stroke: 1.5px var(--ink); letter-spacing: -0.03em; }
.notfound__links { display: grid; gap: 0; margin: 32px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--ink); max-width: 640px; }
.notfound__links a { display: flex; justify-content: space-between; align-items: center; padding: 14px 0; border-bottom: 1px solid var(--line); color: var(--ink); text-decoration: none; font-family: var(--serif); font-size: 1.25rem; }
.notfound__links a:hover { color: var(--patina-deep); }

/* ---------- Blog yazısı ---------- */
.article-head { padding-block: clamp(24px, 3vw, 36px) clamp(36px, 5vw, 64px); border-bottom: 1px solid var(--line); }
.article-head h1 { max-width: 17em; font-size: clamp(2rem, 1.4rem + 2.8vw, 3.7rem); }
.article-meta { display: flex; flex-wrap: wrap; gap: 6px 22px; margin: 18px 0 0; padding: 0; list-style: none; font-size: var(--fs-sm); color: var(--muted); }
.article-meta li { display: flex; gap: 6px; }
.article-meta strong { font-weight: 500; color: var(--ink); }
.article-lede { max-width: 38em; margin: 0; font-size: var(--fs-lg); color: var(--muted); }
.related { padding-block: clamp(48px, 6vw, 88px); border-top: 1px solid var(--line); }

/* ---------- Altbilgi ---------- */
.site-footer { background: var(--night); color: var(--on-dark); padding-top: clamp(56px, 7vw, 96px); --focus: var(--copper-light); font-size: 0.95rem; }
.site-footer a { color: var(--on-dark); text-decoration: none; }
.site-footer a:hover { color: var(--patina-light); text-decoration: underline; }
.footer-top { display: grid; gap: 36px; padding-bottom: clamp(40px, 5vw, 64px); border-bottom: 1px solid var(--line-dark); }
.footer-logo { display: inline-flex; align-items: center; gap: 14px; margin-bottom: 18px; font-family: var(--serif); font-size: clamp(1.6rem, 1.3rem + 1.2vw, 2.3rem); line-height: 1.1; }
.site-footer .footer-logo:hover { text-decoration: none; color: #fff; }
.footer-mark { --mark-line: var(--night); width: 44px; height: 44px; color: var(--paper); flex: none; }
.footer-brand p { max-width: 34em; margin: 0; color: var(--on-dark-muted); }
.footer-call__label { margin: 0 0 4px; font-size: var(--fs-xs); letter-spacing: 0.16em; text-transform: uppercase; color: var(--on-dark-muted); }
.site-footer .footer-call__phone { display: block; font-family: var(--serif); font-size: clamp(2rem, 1.6rem + 1.8vw, 2.9rem); line-height: 1.15; color: #fff; font-variant-numeric: tabular-nums; }
.footer-call__wa { display: inline-flex; align-items: center; gap: 8px; margin-top: 10px; color: var(--patina-light) !important; }
@media (min-width: 900px) { .footer-top { grid-template-columns: 1.4fr 1fr; align-items: end; } .footer-call { justify-self: end; } }
.footer-grid { display: grid; gap: 32px 40px; padding-block: clamp(36px, 5vw, 56px); }
.footer-title { margin: 0 0 14px; font-family: var(--sans); font-size: var(--fs-xs); font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--copper-light); }
.footer-col ul { margin: 0; padding: 0; list-style: none; }
.footer-col li { padding: 4px 0; }
.footer-col p { margin: 0 0 10px; color: var(--on-dark); }
.footer-tel a { font-variant-numeric: tabular-nums; }
.footer-tel span { color: var(--on-dark-muted); font-size: var(--fs-sm); }
.footer-tel li:last-child { color: var(--on-dark); font-variant-numeric: tabular-nums; }
.footer-link-ext { display: inline-flex; align-items: center; gap: 6px; color: var(--patina-light) !important; }
@media (min-width: 640px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .footer-grid { grid-template-columns: 1.2fr 0.9fr 1fr 1.2fr; } }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 24px; padding-block: 22px 28px; border-top: 1px solid var(--line-dark); font-size: var(--fs-sm); color: var(--on-dark-muted); }
.footer-bottom p { margin: 0; }
.site-footer .to-top { color: var(--on-dark-muted); }

/* Mobil hızlı iletişim çubuğu */
.quickbar { display: none; }
@media (max-width: 767px) {
  body { padding-bottom: calc(60px + env(safe-area-inset-bottom)); }
  .quickbar {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 90; display: grid; grid-template-columns: 1fr 1fr;
    padding-bottom: env(safe-area-inset-bottom); background: var(--night); border-top: 1px solid var(--line-dark);
  }
  .quickbar__btn { display: flex; align-items: center; justify-content: center; gap: 10px; min-height: 60px; color: #fff; text-decoration: none; font-weight: 500; }
  .quickbar__btn + .quickbar__btn { border-left: 1px solid var(--line-dark); }
  .quickbar__btn--wa { background: var(--wa); }
  .quickbar__btn:focus-visible { outline-color: var(--copper-light); outline-offset: -4px; }
  body.menu-open .quickbar { display: none; }
}

/* Hareket azaltma */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }

@media print {
  .site-header, .quickbar, .cta-band, .site-footer .footer-call, .map, .doc__side { display: none !important; }
  body { background: #fff; padding: 0; }
}