/* ==========================================================================
   CONSAPP Mühendislik — site stilleri
   Tasarım dili: ARECA sitesiyle ortak mühendislik sistemi
   ========================================================================== */

:root {
  /* Marka — Consapp mavisi + sunumdaki turuncu vurgu */
  --blue-200: #c5dcf3;
  --blue-300: #94bfea;
  --blue-400: #5f9fdf;
  --blue-500: #3584d2;
  --blue-600: #1f6bb8;
  --blue-700: #17518f;
  --orange-300: #ffb58a;
  --orange-500: #f26a21;
  --orange-600: #d9571a;

  --ink-975: #04090e;
  --ink-950: #070f17;
  --ink-900: #0b1621;
  --ink-850: #0f1d2a;
  --ink-800: #142434;
  --ink-700: #1f3346;
  --ink-600: #34495d;
  --ink-500: #56697b;
  --ink-400: #7c8d9d;
  --ink-300: #a8b5c1;
  --ink-200: #d2dae1;
  --ink-150: #e1e7ec;
  --ink-100: #ecf0f3;
  --ink-50: #f5f7f8;
  --white: #ffffff;

  --bg: var(--ink-50);
  --surface: var(--white);
  --surface-2: var(--ink-100);
  --text: var(--ink-900);
  --text-2: var(--ink-600);
  --text-3: var(--ink-500);
  --line: rgb(11 22 33 / 0.12);
  --line-2: rgb(11 22 33 / 0.22);
  --accent: var(--blue-600);
  --accent-strong: var(--blue-700);
  --accent-soft: rgb(53 132 210 / 0.1);
  --signal: var(--orange-500);
  --signal-soft: rgb(242 106 33 / 0.12);
  --grid-line: rgb(11 22 33 / 0.055);

  --font-display: "Sora", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  --fs-display: clamp(2.6rem, 1.3rem + 5.2vw, 6.4rem);
  --fs-h1: clamp(2.4rem, 1.5rem + 3.6vw, 4.8rem);
  --fs-h2: clamp(1.95rem, 1.3rem + 2.5vw, 3.7rem);
  --fs-h3: clamp(1.3rem, 1.12rem + 0.8vw, 1.8rem);
  --fs-h4: clamp(1.1rem, 1.04rem + 0.3vw, 1.28rem);
  --fs-lead: clamp(1.05rem, 0.98rem + 0.38vw, 1.28rem);
  --fs-small: 0.875rem;
  --fs-label: 0.72rem;
  --fs-micro: 0.66rem;

  --tracking-display: -0.045em;
  --tracking-heading: -0.032em;
  --tracking-label: 0.09em;

  --section: clamp(5rem, 2.75rem + 8vw, 9.5rem);
  --section-tight: clamp(3.5rem, 2rem + 5vw, 6rem);
  --container: 1440px;
  --gutter: clamp(1rem, 0.35rem + 3.2vw, 3.5rem);
  --gap: clamp(1rem, 0.6rem + 1.6vw, 2rem);
  --header-h: 76px;
  --radius-sm: 4px;
  --radius: 8px;

  --shadow-1: 0 1px 2px rgb(7 15 23 / 0.06), 0 10px 30px -18px rgb(7 15 23 / 0.28);
  --shadow-2: 0 2px 6px rgb(7 15 23 / 0.06), 0 30px 60px -30px rgb(7 15 23 / 0.45);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-2: 320ms;
  --dur-3: 640ms;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
figure { margin: 0; }
img { height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 450; margin: 0; letter-spacing: var(--tracking-heading); line-height: 1.08; }
h3, h4 { line-height: 1.22; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
::selection { background: var(--blue-300); color: var(--ink-900); }
:focus-visible { outline: 2px solid var(--blue-400); outline-offset: 3px; border-radius: 2px; }

.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--white); color: var(--ink-900); padding: 8px 14px; border-radius: var(--radius-sm); }
.skip:focus { left: 8px; }

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }

/* ---------- Tipografi yardımcıları ---------- */
.label {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--text-3);
}
.eyebrow { display: inline-flex; align-items: center; gap: 12px; }
.eyebrow__num { color: var(--accent); }
.eyebrow__rule { width: 32px; height: 1px; background: currentColor; opacity: .45; }
.dark .eyebrow__num { color: var(--blue-300); }
.lead { font-size: var(--fs-lead); line-height: 1.55; color: var(--text-2); max-width: 60ch; }
.muted { color: var(--text-3); }
em.soft { font-style: normal; color: var(--text-3); }
.dark em.soft { color: var(--ink-400); }

/* ---------- Butonlar ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  height: 46px; padding: 0 20px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem; font-weight: 500; letter-spacing: -0.005em;
  border: 1px solid transparent;
  transition: background var(--dur-2) var(--ease-out), color var(--dur-2), border-color var(--dur-2), transform var(--dur-2) var(--ease-out);
  white-space: nowrap;
}
.btn svg { width: 14px; height: 14px; transition: transform var(--dur-2) var(--ease-out); }
.btn:hover svg { transform: translate(2px, -2px); }
.btn--primary { background: var(--accent); color: var(--white); }
.btn--primary:hover { background: var(--accent-strong); }
.btn--light { background: var(--white); color: var(--ink-900); }
.btn--light:hover { background: var(--ink-100); }
.btn--ghost { border-color: var(--line-2); color: var(--text); }
.btn--ghost:hover { border-color: var(--text); }
.dark .btn--ghost { border-color: rgb(255 255 255 / .22); color: var(--white); }
.dark .btn--ghost:hover { border-color: var(--white); }
.btn--sm { height: 38px; padding: 0 14px; font-size: 0.85rem; }

.link-arrow { display: inline-flex; align-items: center; gap: 10px; font-weight: 500; font-size: .92rem; border-bottom: 1px solid var(--line-2); padding-bottom: 4px; transition: border-color var(--dur-2); }
.link-arrow:hover { border-color: currentColor; }
.link-arrow svg { width: 12px; height: 12px; }

/* ---------- Header ---------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  height: var(--header-h);
  color: var(--white);
  transition: background var(--dur-2), border-color var(--dur-2), backdrop-filter var(--dur-2);
  border-bottom: 1px solid transparent;
}
.header.is-scrolled, .header.is-solid {
  background: rgb(7 15 23 / 0.82);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: rgb(255 255 255 / .07);
}
.header__inner { height: 100%; display: flex; align-items: center; gap: 24px; }
.header__logo img { height: 30px; width: auto; }
.nav { margin-inline: auto; display: flex; gap: 6px; }
.nav a { position: relative; padding: 8px 14px; font-size: .9rem; font-weight: 500; color: rgb(255 255 255 / .82); border-radius: var(--radius-sm); transition: color var(--dur-2), background var(--dur-2); }
.nav a:hover { color: var(--white); background: rgb(255 255 255 / .06); }
.nav a[aria-current="page"] { color: var(--white); }
.nav a[aria-current="page"]::after { content: ""; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 1px; background: var(--orange-500); }
.header__actions { display: flex; align-items: center; gap: 12px; }
.lang { font-family: var(--font-mono); font-size: var(--fs-label); letter-spacing: var(--tracking-label); color: rgb(255 255 255 / .7); display: inline-flex; gap: 6px; align-items: center; }
.lang span { color: rgb(255 255 255 / .3); }
.lang a { color: rgb(255 255 255 / .6); padding: 6px 2px; transition: color var(--dur-2); }
.lang a:hover { color: var(--white); }
.lang a[aria-current="page"] { color: var(--white); font-weight: 500; pointer-events: none; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid rgb(255 255 255 / .2); border-radius: var(--radius-sm); background: transparent; align-items: center; justify-content: center; }
.menu-toggle span { display: block; width: 18px; height: 1.5px; background: var(--white); position: relative; transition: transform var(--dur-2); }
.menu-toggle span::before, .menu-toggle span::after { content: ""; position: absolute; left: 0; width: 18px; height: 1.5px; background: var(--white); transition: transform var(--dur-2), top var(--dur-2); }
.menu-toggle span::before { top: -6px; }
.menu-toggle span::after { top: 6px; }
.menu-open .menu-toggle span { background: transparent; }
.menu-open .menu-toggle span::before { top: 0; transform: rotate(45deg); }
.menu-open .menu-toggle span::after { top: 0; transform: rotate(-45deg); }

.mobile-menu {
  position: fixed; inset: var(--header-h) 0 0 0; z-index: 60;
  background: var(--ink-950); color: var(--white);
  padding: 24px var(--gutter) 40px;
  display: flex; flex-direction: column; gap: 4px;
  transform: translateY(-8px); opacity: 0; visibility: hidden;
  transition: opacity var(--dur-2), transform var(--dur-2) var(--ease-out), visibility var(--dur-2);
  overflow-y: auto;
}
.menu-open .mobile-menu { opacity: 1; transform: none; visibility: visible; }
.mobile-menu a.mm-link { display: flex; align-items: baseline; gap: 16px; padding: 16px 0; border-bottom: 1px solid rgb(255 255 255 / .08); font-family: var(--font-display); font-size: 1.6rem; letter-spacing: var(--tracking-heading); }
.mobile-menu a.mm-link .label { color: var(--blue-300); }
.mobile-menu .btn { margin-top: 24px; align-self: flex-start; }
.mobile-menu .mm-mail { margin-top: 16px; color: var(--ink-300); font-size: .9rem; }

/* ---------- Koyu bölüm temeli ---------- */
.dark {
  background: var(--ink-900); color: var(--white);
  --text: var(--white); --text-2: var(--ink-300); --text-3: var(--ink-400);
  --line: rgb(255 255 255 / .1); --line-2: rgb(255 255 255 / .2);
  --grid-line: rgb(255 255 255 / .04);
}
.grid-bg {
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
}

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  min-height: min(100svh, 980px);
  padding-top: var(--header-h);
  display: flex; flex-direction: column;
  background:
    radial-gradient(70% 60% at 72% 42%, rgb(31 107 184 / .22), transparent 70%),
    radial-gradient(40% 40% at 10% 90%, rgb(242 106 33 / .07), transparent 70%),
    var(--ink-900);
}
.hero__flow { position: absolute; inset: 0; pointer-events: none; opacity: .9; }
.hero__flow path { fill: none; stroke: url(#flowGrad); stroke-width: 1; }
.hero__body {
  position: relative; z-index: 2; flex: 1;
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  align-items: center; gap: clamp(2rem, 4vw, 5rem);
  padding-block: clamp(3rem, 6vw, 5rem) clamp(2.5rem, 4vw, 4rem);
}
.hero__eyebrow { color: var(--blue-300); margin-bottom: 26px; }
.hero__title { font-size: clamp(2.6rem, 1.2rem + 4.3vw, 5.6rem); letter-spacing: var(--tracking-display); line-height: 1.0; font-weight: 420; }
.hero__title .line { display: block; overflow: hidden; padding-bottom: .08em; margin-bottom: -.04em; padding-right: .1em; }
.hero__title .line > span { display: inline-block; }
.hero__title .accent { color: var(--blue-300); }
.hero__lead { margin-top: 28px; color: var(--ink-300); max-width: 46ch; font-size: var(--fs-lead); line-height: 1.6; }
.hero__ctas { margin-top: 36px; display: flex; flex-wrap: wrap; gap: 12px; }

.fig { position: relative; }
.fig__head { display: flex; align-items: center; gap: 12px; color: var(--ink-300); margin-bottom: 8px; }
.fig__head b { color: var(--white); font-weight: 500; }
.fig__head .eyebrow__rule { flex: 0 0 28px; }
.fig svg { width: 100%; height: auto; overflow: visible; }
.fig .t-mono { font-family: var(--font-mono); font-size: 10px; letter-spacing: .09em; fill: var(--ink-400); text-transform: uppercase; }
.fig .t-val { font-family: var(--font-display); font-size: 15px; fill: var(--white); letter-spacing: -.01em; }
.fig .t-tag { font-family: var(--font-mono); font-size: 9px; letter-spacing: .1em; fill: var(--blue-200); }
.fig .stroke { stroke: rgb(255 255 255 / .55); fill: none; stroke-width: 1.2; }
.fig .stroke-soft { stroke: rgb(255 255 255 / .22); fill: none; stroke-width: 1; }
.fig .stroke-accent { stroke: var(--blue-400); fill: none; stroke-width: 1.4; }
.fig .flow { stroke: var(--blue-300); stroke-width: 1.4; fill: none; stroke-dasharray: 4 7; animation: dash 1.6s linear infinite; }
.fig .flow--warm { stroke: var(--orange-500); }
.fig .data { stroke: var(--orange-500); stroke-width: 1.2; fill: none; stroke-dasharray: 2 5; animation: dash 1.1s linear infinite; }
.fig .fan { transform-box: fill-box; transform-origin: center; animation: spin 3.2s linear infinite; }
.fig .dot { fill: var(--blue-300); }
.fig .dot--warm { fill: var(--orange-500); }
.fig .pulse { transform-box: fill-box; transform-origin: center; animation: pulse 2.4s var(--ease-out) infinite; }
.fig .callout-line { stroke: rgb(255 255 255 / .35); stroke-width: 1; fill: none; }
@keyframes dash { to { stroke-dashoffset: -22; } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0% { opacity: .9; transform: scale(1); } 80%, 100% { opacity: 0; transform: scale(2.6); } }

.hero__strip { position: relative; z-index: 2; border-top: 1px solid rgb(255 255 255 / .1); }
.hero__strip ol { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); }
.hero__strip li + li { border-left: 1px solid rgb(255 255 255 / .1); }
.hero__strip a { display: block; padding: 18px 20px 20px; transition: background var(--dur-2); height: 100%; }
.hero__strip a:hover { background: rgb(255 255 255 / .04); }
.strip__top { display: flex; align-items: baseline; gap: 10px; }
.strip__top .label { color: var(--ink-400); }
.strip__top h3 { font-size: .98rem; white-space: nowrap; letter-spacing: -.01em; font-weight: 500; }
.strip__top svg { margin-left: auto; width: 10px; height: 10px; opacity: .5; align-self: center; }
.strip__desc { margin-top: 6px; font-size: .82rem; color: var(--ink-400); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---------- Bölüm başlıkları ---------- */
.section { padding-block: var(--section); position: relative; }
.section--tight { padding-block: var(--section-tight); }
.section--surface { background: var(--surface); }
.sec-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--gap); align-items: end; margin-bottom: clamp(2.5rem, 5vw, 4.5rem); }
.sec-head .eyebrow { margin-bottom: 22px; }
.sec-head h2 { font-size: var(--fs-h2); }
.sec-head h2 .soft { color: var(--text-3); }
.sec-head__aside { display: flex; flex-direction: column; gap: 22px; align-items: flex-start; }
.sec-head__aside p { color: var(--text-2); max-width: 54ch; }

/* ---------- Süreç ---------- */
.process { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.process li { padding: 28px 24px 8px 0; position: relative; }
.process li + li { padding-left: 24px; border-left: 1px solid var(--line); }
.process li::before { content: ""; position: absolute; top: -4px; left: 0; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.process li + li::before { left: -4px; }
.process .label { color: var(--accent); }
.process h3 { font-size: var(--fs-h4); margin-top: 18px; letter-spacing: -.02em; font-weight: 500; }
.process p { margin-top: 10px; color: var(--text-2); font-size: .93rem; }

/* ---------- Hizmet kartları ---------- */
.services { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.svc { background: var(--surface); padding: clamp(24px, 2.6vw, 36px); display: flex; flex-direction: column; gap: 16px; min-height: 300px; transition: background var(--dur-2); position: relative; }
.svc:hover { background: var(--ink-50); }
.svc__top { display: flex; justify-content: space-between; align-items: center; }
.svc__icon { width: 44px; height: 44px; border: 1px solid var(--line-2); border-radius: var(--radius-sm); display: grid; place-items: center; color: var(--accent); }
.svc__icon svg { width: 22px; height: 22px; }
.svc h3 { font-size: var(--fs-h4); font-weight: 500; letter-spacing: -.02em; margin-top: 8px; }
.svc p { color: var(--text-2); font-size: .93rem; }
.svc__tags { margin-top: auto; display: flex; flex-wrap: wrap; gap: 6px; padding-top: 8px; }
.chip { font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: .08em; text-transform: uppercase; padding: 4px 8px; border: 1px solid var(--line); border-radius: 2px; color: var(--text-3); }
.svc--cta { background: var(--ink-900); color: var(--white); justify-content: space-between; }
.svc--cta:hover { background: var(--ink-850); }
.svc--cta h3 { font-size: var(--fs-h3); }
.svc--cta p { color: var(--ink-300); }

/* ---------- Projeler (ana sayfa listesi) ---------- */
.proj-feature { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: clamp(2rem, 4vw, 4rem); align-items: start; }
.proj-feature__media { position: sticky; top: calc(var(--header-h) + 24px); aspect-ratio: 1 / 1; border-radius: var(--radius); overflow: hidden; background: var(--ink-850); border: 1px solid var(--line); }
.proj-feature__media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transform: scale(1.03); transition: opacity 600ms var(--ease-out), transform 900ms var(--ease-out); }
.proj-feature__media img.is-active { opacity: 1; transform: none; }
.proj-feature__media figcaption { position: absolute; left: 16px; bottom: 16px; right: 16px; display: flex; justify-content: space-between; gap: 12px; z-index: 2; }
.tag-pill { font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: .09em; text-transform: uppercase; background: rgb(7 15 23 / .78); color: var(--white); padding: 6px 10px; border-radius: 2px; backdrop-filter: blur(6px); }
.proj-list li { border-top: 1px solid var(--line); }
.proj-list li:last-child { border-bottom: 1px solid var(--line); }
.proj-list a { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 16px; align-items: baseline; padding: 22px 4px; transition: padding var(--dur-2) var(--ease-out), background var(--dur-2); }
.proj-list a:hover, .proj-list a.is-active { padding-left: 14px; background: rgb(255 255 255 / .03); }
.proj-list .label { color: var(--ink-400); }
.proj-list a.is-active .label { color: var(--orange-500); }
.proj-list h3 { font-size: clamp(1.1rem, 1rem + .5vw, 1.45rem); font-weight: 450; letter-spacing: -.02em; line-height: 1.22; }
.proj-list p { margin-top: 6px; color: var(--ink-400); font-size: .88rem; }
.status { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: .09em; text-transform: uppercase; color: var(--text-3); white-space: nowrap; }
.status::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: #4cbd8d; }
.status--active::before { background: var(--orange-500); box-shadow: 0 0 0 3px rgb(242 106 33 / .18); }

/* ---------- Sektörler ---------- */
.sectors { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--gap); }
.sector { border-top: 1px solid var(--line-2); padding-top: 22px; }
.sector .label { color: var(--accent); }
.sector h3 { margin-top: 14px; font-size: var(--fs-h4); font-weight: 500; letter-spacing: -.02em; }
.sector p { margin-top: 10px; color: var(--text-2); font-size: .93rem; }
.sector__refs { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 6px; }

/* ---------- İkili (görsel + metin) ---------- */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 5.5rem); align-items: center; }
.split__media { position: relative; border-radius: var(--radius); overflow: hidden; aspect-ratio: 5 / 4; background: var(--ink-850); }
.split__media img { width: 100%; height: 100%; object-fit: cover; }
.split__media .fig-tag { position: absolute; left: 16px; top: 16px; }
.split__media .fig-tag-b { position: absolute; left: 16px; bottom: 16px; }
.split h2 { font-size: var(--fs-h2); margin-top: 22px; }
.split .lead { margin-top: 24px; }
.facts { margin-top: 36px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.facts li { padding: 18px 16px 0 0; }
.facts li + li { padding-left: 16px; border-left: 1px solid var(--line); }
.facts b { display: block; font-family: var(--font-display); font-weight: 450; font-size: clamp(1.5rem, 1.2rem + 1vw, 2.2rem); letter-spacing: -.03em; line-height: 1.1; }
.facts span { display: block; margin-top: 6px; font-size: .84rem; color: var(--text-3); }

/* ---------- Referanslar ---------- */
.refs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.ref { background: var(--surface); padding: 28px; display: flex; flex-direction: column; gap: 22px; min-height: 240px; }
.ref__logo { height: 96px; display: flex; align-items: center; }
.ref__logo img { max-height: 96px; width: auto; max-width: 70%; object-fit: contain; filter: grayscale(1) contrast(1.1); opacity: .8; transition: filter var(--dur-2), opacity var(--dur-2); }
.ref:hover .ref__logo img { filter: none; opacity: 1; }
.ref__word { font-family: var(--font-display); font-size: 1.5rem; letter-spacing: -.03em; line-height: 1.1; color: var(--ink-600); }
.ref__word small { display: block; font-family: var(--font-mono); font-size: var(--fs-micro); letter-spacing: .1em; text-transform: uppercase; color: var(--text-3); margin-top: 8px; }
.ref__meta { margin-top: auto; }
.ref__meta h3 { font-size: 1rem; font-weight: 500; letter-spacing: -.01em; }
.ref__meta p { font-size: .86rem; color: var(--text-3); margin-top: 4px; }

/* ---------- CTA ---------- */
.cta { position: relative; overflow: hidden; }
.cta__inner { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: var(--gap); align-items: end; }
.cta h2 { font-size: var(--fs-h1); letter-spacing: var(--tracking-display); }
.cta h2 .soft { color: var(--ink-400); }
.cta__aside p { color: var(--ink-300); max-width: 46ch; }
.cta__aside .hero__ctas { margin-top: 28px; }
.cta__mail { margin-top: 22px; font-size: .88rem; color: var(--ink-400); }
.cta__mail a { color: var(--white); border-bottom: 1px solid rgb(255 255 255 / .3); }

/* ---------- Footer ---------- */
.footer { background: var(--ink-950); color: var(--ink-300); padding-top: clamp(3.5rem, 6vw, 5.5rem); font-size: .92rem; }
.footer__top { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr)); gap: var(--gap); padding-bottom: 48px; border-bottom: 1px solid rgb(255 255 255 / .08); }
.footer__brand img { height: 30px; width: auto; }
.footer__brand p { margin-top: 20px; max-width: 36ch; color: var(--ink-400); }
.footer h4 { font-family: var(--font-mono); font-size: var(--fs-label); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--ink-500); font-weight: 500; margin-bottom: 18px; }
.footer li + li { margin-top: 10px; }
.footer a:hover { color: var(--white); }
.footer address { font-style: normal; line-height: 1.7; color: var(--ink-400); }
.footer__legal { padding-block: 24px 32px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; font-size: .8rem; color: var(--ink-500); }
.footer__note { padding-top: 24px; font-size: .76rem; color: var(--ink-500); max-width: 110ch; line-height: 1.6; }

/* ---------- İç sayfa başlığı ---------- */
.page-hero { position: relative; overflow: hidden; padding: calc(var(--header-h) + clamp(3.5rem, 7vw, 6.5rem)) 0 clamp(3rem, 6vw, 5rem); background: radial-gradient(60% 80% at 85% 20%, rgb(31 107 184 / .2), transparent 70%), var(--ink-900); }
.page-hero .hero__flow { opacity: .55; }
.page-hero__inner { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: var(--gap); align-items: end; }
.crumbs { display: flex; gap: 10px; align-items: center; color: var(--ink-400); margin-bottom: 26px; }
.crumbs a:hover { color: var(--white); }
.page-hero h1 { font-size: var(--fs-h1); letter-spacing: var(--tracking-display); line-height: 1.02; }
.page-hero h1 .soft { color: var(--ink-400); }
.page-hero p { color: var(--ink-300); font-size: var(--fs-lead); line-height: 1.6; max-width: 48ch; }
.page-hero__index { position: relative; z-index: 2; margin-top: clamp(2.5rem, 5vw, 4rem); border-top: 1px solid rgb(255 255 255 / .1); display: flex; flex-wrap: wrap; }
.page-hero__index a { padding: 16px 22px 0 0; margin-right: 22px; color: var(--ink-400); font-size: .88rem; display: inline-flex; gap: 10px; align-items: baseline; transition: color var(--dur-2); }
.page-hero__index a:hover { color: var(--white); }
.page-hero__index .label { color: var(--blue-300); }

/* ---------- Hizmet detay ---------- */
.svc-detail { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(2rem, 5vw, 5rem); padding-block: clamp(3rem, 6vw, 5rem); border-top: 1px solid var(--line); }
.svc-detail:first-child { border-top: 0; padding-top: 0; }
.svc-detail__head { position: sticky; top: calc(var(--header-h) + 32px); align-self: start; }
.svc-detail__num { font-family: var(--font-display); font-size: clamp(3.5rem, 2.5rem + 4vw, 6.5rem); letter-spacing: -.06em; line-height: .9; color: transparent; -webkit-text-stroke: 1px var(--line-2); }
.svc-detail h2 { margin-top: 20px; font-size: var(--fs-h3); letter-spacing: -.025em; }
.svc-detail__head p { margin-top: 16px; color: var(--text-2); max-width: 46ch; }
.svc-detail__head .svc__tags { margin-top: 20px; }
.scope { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 var(--gap); }
.scope li { padding: 18px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 8px; font-size: .95rem; color: var(--text-2); }
.scope li .label { color: var(--accent); padding-top: 3px; }
.scope li b { display: block; color: var(--text); font-weight: 500; margin-bottom: 2px; }
.related { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.related .label { margin-right: 6px; }
.related a { font-size: .86rem; padding: 6px 12px; border: 1px solid var(--line-2); border-radius: 999px; transition: background var(--dur-2), border-color var(--dur-2); }
.related a:hover { background: var(--accent-soft); border-color: var(--accent); }

.models { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--gap); }
.model { border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; background: rgb(255 255 255 / .02); display: flex; flex-direction: column; gap: 14px; }
.model .label { color: var(--blue-300); }
.model h3 { font-size: var(--fs-h4); font-weight: 500; letter-spacing: -.02em; }
.model p { color: var(--ink-300); font-size: .93rem; }
.model ul { margin-top: 6px; display: grid; gap: 8px; }
.model li { font-size: .88rem; color: var(--ink-300); padding-left: 18px; position: relative; }
.model li::before { content: ""; position: absolute; left: 0; top: .7em; width: 8px; height: 1px; background: var(--orange-500); }

/* ---------- Proje kartları (projeler sayfası) ---------- */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 36px; align-items: center; }
.filters .label { margin-right: 8px; }
.filter { height: 36px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--line-2); background: transparent; font-size: .86rem; transition: background var(--dur-2), color var(--dur-2), border-color var(--dur-2); }
.filter:hover { border-color: var(--text); }
.filter[aria-pressed="true"] { background: var(--ink-900); border-color: var(--ink-900); color: var(--white); }
.projects { display: grid; gap: 0; }
.project { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: clamp(1.5rem, 4vw, 4rem); padding-block: clamp(2.5rem, 5vw, 4rem); border-top: 1px solid var(--line); scroll-margin-top: calc(var(--header-h) + 16px); }
.project[hidden] { display: none; }
.project__media { position: relative; aspect-ratio: 1 / 1; border-radius: var(--radius); overflow: hidden; background: var(--surface-2); }
.project__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 900ms var(--ease-out); }
.project:hover .project__media img { transform: scale(1.03); }
.project__media .tag-pill { position: absolute; left: 14px; top: 14px; }
.project__meta { display: flex; flex-wrap: wrap; gap: 14px 22px; align-items: center; }
.project h2 { margin-top: 18px; font-size: var(--fs-h3); letter-spacing: -.025em; }
.project__sum { margin-top: 16px; color: var(--text-2); max-width: 60ch; }
.project__steps { margin-top: 26px; counter-reset: st; }
.project__steps li { counter-increment: st; display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 8px; padding: 13px 0; border-top: 1px solid var(--line); font-size: .94rem; color: var(--text-2); }
.project__steps li::before { content: counter(st, decimal-leading-zero); font-family: var(--font-mono); font-size: var(--fs-label); color: var(--accent); padding-top: 3px; letter-spacing: .06em; }
.project__steps b { color: var(--text); font-weight: 500; }
.project .svc__tags { margin-top: 22px; }

/* ---------- Hakkımızda ---------- */
.vm { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.vm article { background: var(--surface); padding: clamp(28px, 3.5vw, 48px); }
.vm h3 { font-size: var(--fs-h3); margin-top: 18px; }
.vm p { margin-top: 16px; color: var(--text-2); }
.timeline { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.timeline li { padding: 26px 22px 0 0; position: relative; }
.timeline li + li { padding-left: 22px; border-left: 1px solid var(--line); }
.timeline .year { font-family: var(--font-display); font-size: clamp(2rem, 1.5rem + 1.6vw, 3rem); letter-spacing: -.045em; line-height: 1; color: var(--accent); }
.timeline h3 { margin-top: 18px; font-size: var(--fs-h4); font-weight: 500; letter-spacing: -.02em; }
.timeline p { margin-top: 8px; color: var(--text-2); font-size: .93rem; }
.values { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--gap); }
.value .label { color: var(--blue-300); }
.value h3 { margin-top: 14px; font-size: var(--fs-h4); font-weight: 500; letter-spacing: -.02em; }
.value p { margin-top: 10px; color: var(--ink-300); font-size: .93rem; }

/* ---------- İletişim ---------- */
.contact { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.contact-info li { padding: 22px 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: 120px minmax(0, 1fr); gap: 16px; }
.contact-info li:last-child { border-bottom: 1px solid var(--line); }
.contact-info .label { padding-top: 4px; }
.contact-info a { border-bottom: 1px solid var(--line-2); }
.contact-info a:hover { border-color: var(--accent); color: var(--accent); }
.contact-info address { font-style: normal; }
.map { margin-top: 32px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); aspect-ratio: 16 / 10; background: var(--surface-2); }
.map iframe { width: 100%; height: 100%; border: 0; display: block; filter: grayscale(.4); }
.form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(24px, 3.5vw, 44px); box-shadow: var(--shadow-1); }
.form h2 { font-size: var(--fs-h3); }
.form > p { margin-top: 10px; color: var(--text-2); }
.form__grid { margin-top: 28px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label { font-family: var(--font-mono); font-size: var(--fs-label); letter-spacing: var(--tracking-label); text-transform: uppercase; color: var(--text-3); }
.field input, .field select, .field textarea { font: inherit; font-size: .96rem; color: var(--text); background: var(--ink-50); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 14px; transition: border-color var(--dur-2), background var(--dur-2); width: 100%; }
.field textarea { min-height: 150px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); background: var(--white); }
.services-pick { display: flex; flex-wrap: wrap; gap: 8px; }
.services-pick label { text-transform: none; letter-spacing: 0; font-family: var(--font-body); font-size: .86rem; color: var(--text-2); display: inline-flex; align-items: center; gap: 8px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 999px; cursor: pointer; transition: border-color var(--dur-2), background var(--dur-2), color var(--dur-2); }
.services-pick label { position: relative; }
.field .services-pick input { position: absolute; left: 0; top: 0; width: 1px; height: 1px; padding: 0; opacity: 0; pointer-events: none; }
.services-pick input:checked + span { color: var(--accent-strong); }
.services-pick label:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.services-pick input:focus-visible + span { outline: 2px solid var(--blue-400); outline-offset: 4px; }
.form__foot { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; }
.form__foot small { color: var(--text-3); font-size: .8rem; max-width: 42ch; }
.form__ok { display: none; margin-top: 16px; font-size: .9rem; color: var(--accent-strong); }
.form__ok.is-on { display: block; }

/* ---------- Görünür olma animasyonu ---------- */
.js [data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity 800ms var(--ease-out), transform 900ms var(--ease-out); transition-delay: calc(var(--d, 0) * 80ms); }
.js [data-reveal].is-in { opacity: 1; transform: none; }
.js .hero__title .line > span { transform: translateY(105%); transition: transform 1000ms var(--ease-out); transition-delay: calc(var(--l) * 90ms + 120ms); }
.js .is-loaded .hero__title .line > span { transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; transition-delay: 0ms !important; }
  html { scroll-behavior: auto; }
}

/* ---------- Duyarlı ---------- */
@media (max-width: 1180px) {
  .hero__strip ol { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .hero__strip li:nth-child(n+4) { display: none; }
  .process { grid-template-columns: repeat(3, minmax(0, 1fr)); row-gap: 28px; }
  .process li:nth-child(4) { padding-left: 0; border-left: 0; }
  .process li:nth-child(4)::before { left: 0; }
  .footer__top { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .values { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 36px; }
}
@media (max-width: 960px) {
  .nav, .header__actions .btn { display: none; }
  .header__actions { gap: 16px; }
  .menu-toggle { display: inline-flex; margin-left: auto; }
  .header__actions { margin-left: auto; }
  .hero__body { grid-template-columns: 1fr; padding-top: 2.5rem; }
  .hero__fig { max-width: 620px; }
  .sec-head, .page-hero__inner, .cta__inner { grid-template-columns: 1fr; align-items: start; }
  .services { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .proj-feature { grid-template-columns: 1fr; }
  .proj-feature__media { position: relative; top: 0; aspect-ratio: 16 / 10; }
  .sectors { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 36px; }
  .split { grid-template-columns: 1fr; }
  .svc-detail { grid-template-columns: 1fr; }
  .svc-detail__head { position: static; }
  .models { grid-template-columns: 1fr; }
  .project { grid-template-columns: 1fr; }
  .project__media { aspect-ratio: 16 / 10; }
  .timeline { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 32px; }
  .timeline li:nth-child(3) { padding-left: 0; border-left: 0; }
  .contact { grid-template-columns: 1fr; }
  .refs { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  :root { --header-h: 64px; }
  .header__logo img { height: 24px; }
  .hero { min-height: 0; }
  .hero__strip ol { grid-template-columns: 1fr; }
  .hero__strip li:nth-child(n+4) { display: block; }
  .hero__strip li + li { border-left: 0; border-top: 1px solid rgb(255 255 255 / .1); }
  .hero__strip a { padding: 14px 0; }
  .hero__strip .strip__desc { display: none; }
  .process { grid-template-columns: 1fr; }
  .process li, .process li + li { padding-left: 22px; border-left: 1px solid var(--line); }
  .process li::before, .process li + li::before { left: -4px; }
  .process { border-top: 0; }
  .services, .sectors, .refs, .vm { grid-template-columns: 1fr; }
  .svc { min-height: 0; }
  .facts { grid-template-columns: 1fr; }
  .facts li + li { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); margin-top: 16px; }
  .scope { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; }
  .timeline li + li { padding-left: 0; border-left: 0; }
  .values { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1fr; }
  .form__grid { grid-template-columns: 1fr; }
  .contact-info li { grid-template-columns: 1fr; gap: 6px; }
  .proj-list a { grid-template-columns: 34px minmax(0, 1fr); }
  .proj-list .status { grid-column: 2; }
  .fig .t-val { font-size: 17px; }
  .fig .t-mono { font-size: 12px; }
}

.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* Temsili görsel etiketi */
.rep-tag { position: absolute; right: 12px; top: 12px; z-index: 2; font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: .1em; text-transform: uppercase; color: rgb(255 255 255 / .85); background: rgb(7 15 23 / .55); padding: 4px 7px; border-radius: 2px; backdrop-filter: blur(6px); }

/* Öne çıkan ürün görseli (beyaz zemin) */
.proj-feature__media--product { display: block; background: #fff; border-color: transparent; }
.proj-feature__media--product img { object-fit: contain; padding: 6%; opacity: 1; transform: none; transition: transform 900ms var(--ease-out); }
.proj-feature__media--product:hover img { transform: scale(1.03); }
.proj-feature__media--product .fig-tag { position: absolute; left: 16px; top: 16px; z-index: 2; }
.proj-feature__cap { position: absolute; left: 16px; right: 16px; bottom: 16px; display: flex; justify-content: space-between; gap: 12px; z-index: 2; }
.project__media--product { background: #fff; border: 1px solid var(--line); }
.project__media--product img { object-fit: contain; padding: 5%; }
.split__media--wide { aspect-ratio: 16 / 9; }

/* Görselsiz proje satırı */
.project--text .project__head { align-self: start; }
.project__num { font-family: var(--font-display); font-size: clamp(2.6rem, 2rem + 2.4vw, 4.2rem); letter-spacing: -.06em; line-height: .9; color: transparent; -webkit-text-stroke: 1px var(--line-2); margin-bottom: 18px; }
.project--text .project__steps { margin-top: 0; }
@media (max-width: 960px) { .project--text .project__steps { margin-top: 8px; } }

/* Dil menüsü — Areca ile aynı görünüm (details/summary: JS olmadan da çalışır) */
.lang-menu { position: relative; }
.lang-menu__toggle { display: inline-flex; align-items: center; gap: 8px; height: 40px; padding: 0 8px; list-style: none; cursor: pointer; color: var(--white); font-family: var(--font-mono); font-size: 0.72rem; font-weight: 400; letter-spacing: var(--tracking-label); user-select: none; }
.lang-menu__toggle::-webkit-details-marker { display: none; }
.lang-menu__toggle::marker { content: ""; }
.lang-menu__toggle:focus-visible { outline: 2px solid var(--blue-400); outline-offset: 2px; border-radius: 2px; }
.flag { flex: none; width: 24px; height: 16px; border-radius: 2px; box-shadow: 0 0 0 1px rgb(0 0 0 / .12); overflow: hidden; }
.lang-menu__chevron { stroke: currentColor; fill: none; stroke-width: 1.5; transition: transform var(--dur-2) var(--ease-out); }
.lang-menu[open] .lang-menu__chevron { transform: rotate(180deg); }
.lang-menu__list { position: absolute; right: 0; top: calc(100% + 6px); z-index: 70; min-width: 190px; margin: 0; padding: 6px; list-style: none; background: var(--white); color: var(--ink-900); border: 1px solid rgb(11 22 33 / .12); box-shadow: var(--shadow-2); }
.lang-menu__list a { display: flex; align-items: center; gap: 12px; height: 40px; padding: 6px 10px; font-family: var(--font-body); font-size: 15px; font-weight: 400; color: var(--ink-900); transition: background-color 160ms; }
.lang-menu__list a:hover, .lang-menu__list a:focus-visible { background: var(--ink-100); }
.lang-menu__list a[aria-current="true"] { font-weight: 600; }
.lang-menu__list a[aria-current="true"]::after { content: ""; margin-left: auto; width: 6px; height: 6px; border-radius: 50%; background: var(--blue-600); }