/* ==========================================================================
   Sovo Grup — ana sayfa stil dosyası
   Tek yazı ailesi (Montserrat), 12 kolonlu ızgara, 8px tabanlı boşluk ölçeği.
   Tüm geçişler ≤ 0,6 sn. Ayrıntılar: docs/TASARIM.md
   ========================================================================== */

@font-face {
  font-family: "Montserrat";
  src: url("../fonts/montserrat-var.woff2") format("woff2");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}

/* Web fontu gelene kadar düzen kaymasını azaltan metrik uyumlu yedek */
@font-face {
  font-family: "Montserrat Fallback";
  src: local("Arial"), local("Helvetica Neue"), local("Helvetica");
  size-adjust: 113.4%;
  ascent-override: 85.4%;
  descent-override: 22.1%;
  line-gap-override: 0%;
}

:root {
  /* Renkler — logo dosyalarından birebir alındı */
  --sovo-gray: #3D3D3D;
  --mekanik: #008080;
  --metal: #4682B4;
  --enerji: #F98E00;

  --bg: var(--sovo-gray);
  --bg-deep: #343434;
  --surface: #444444;
  --ink: var(--sovo-gray);
  --text: #FFFFFF;
  --text-2: rgba(255, 255, 255, 0.76);
  --text-3: rgba(255, 255, 255, 0.62);
  --line: rgba(255, 255, 255, 0.16);
  --line-strong: rgba(255, 255, 255, 0.32);

  /* Yazı */
  --font: "Montserrat", "Montserrat Fallback", system-ui, -apple-system, "Segoe UI", sans-serif;
  --fs-display: clamp(2.125rem, 1.15rem + 4.1vw, 4.75rem);
  --fs-h2: clamp(1.75rem, 1.15rem + 2.4vw, 3.25rem);
  --fs-h3: clamp(1.1875rem, 1.05rem + 0.55vw, 1.5rem);
  --fs-lead: clamp(1.0625rem, 0.98rem + 0.45vw, 1.3125rem);
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-label: 0.75rem;

  /* Boşluk ölçeği (8px tabanı) */
  --sp-1: 0.5rem;
  --sp-2: 1rem;
  --sp-3: 1.5rem;
  --sp-4: 2rem;
  --sp-5: 3rem;
  --sp-6: 4rem;
  --sp-7: 6rem;

  /* Izgara */
  --gutter: clamp(1.25rem, 4.5vw, 4rem);
  --col-gap: clamp(1rem, 2.2vw, 2rem);
  --maxw: 88rem;
  --section-y: clamp(5rem, 3.5rem + 7vw, 10rem);
  --header-h: 4rem;

  /* Hareket */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --t-fast: 0.25s;
  --t-med: 0.4s;
  --t-slow: 0.5s;
}

@media (min-width: 1024px) {
  :root { --header-h: 5rem; }
}

/* ---------- Temel ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: var(--header-h);
}

body {
  margin: 0;
  overflow-x: clip;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img,
video,
svg { display: block; max-width: 100%; }
img,
video { height: auto; }

h1, h2, h3, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }

h1, h2, h3 {
  font-weight: 500;
  overflow-wrap: break-word;
  text-wrap: balance;
}
p, li, dd, label, a { overflow-wrap: break-word; }
p { text-wrap: pretty; }

a { color: inherit; text-decoration: none; }

button,
input,
select,
textarea { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

::selection { background: var(--enerji); color: var(--sovo-gray); }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

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

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -4rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--text);
  color: var(--ink);
  font-weight: 600;
  font-size: var(--fs-small);
  transition: top var(--t-fast) var(--ease);
}
.skip-link:focus { top: 0.75rem; }

/* ---------- Izgara ve yardımcılar ---------- */
.container {
  width: 100%;
  max-width: calc(var(--maxw) + 2 * var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-4) var(--col-gap);
}
@media (min-width: 1024px) {
  .grid { grid-template-columns: repeat(12, minmax(0, 1fr)); }
}

.section { padding-block: var(--section-y); }
.section--deep { background: var(--bg-deep); }

.eyebrow {
  display: block;
  margin-bottom: var(--sp-3);
  color: var(--text-3);
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.2em;
  line-height: 1.4;
  text-transform: uppercase;
}

.h2 {
  font-size: var(--fs-h2);
  line-height: 1.12;
  letter-spacing: -0.02em;
}
.h3 {
  font-size: var(--fs-h3);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.005em;
}
.lead {
  font-size: var(--fs-lead);
  line-height: 1.6;
}
.muted { color: var(--text-2); }

.arrow {
  display: inline-block;
  flex: none;
  width: 1em;
  height: 1em;
  vertical-align: -0.125em;
  transition: transform var(--t-med) var(--ease);
}

/* ---------- Başlık / üst menü ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--header-h);
  color: var(--text);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color var(--t-med) var(--ease), border-color var(--t-med) var(--ease);
}
.site-header::before {
  /* hero üzerinde okunurluk için yumuşak üst gölge (görsel tonu) */
  content: "";
  position: absolute;
  inset: 0 0 -2rem;
  z-index: -1;
  background: linear-gradient(to bottom, rgba(38, 38, 38, 0.55), rgba(38, 38, 38, 0));
  pointer-events: none;
  transition: opacity var(--t-med) var(--ease);
}
.site-header.is-solid {
  background: var(--bg);
  border-bottom-color: var(--line);
}
.site-header.is-solid::before { opacity: 0; }

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  height: 100%;
}

.brandmark {
  display: block;
  flex: none;
  width: clamp(5.5rem, 4.5rem + 2.5vw, 7rem);
  color: var(--text);
}
.brandmark svg { width: 100%; height: auto; fill: currentColor; }

.nav { display: none; }
.nav__list { display: flex; align-items: center; gap: clamp(1.25rem, 2.4vw, 2.5rem); }
.nav__link {
  position: relative;
  display: inline-block;
  padding-block: 0.5rem;
  font-size: var(--fs-small);
  font-weight: 500;
  letter-spacing: 0.01em;
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0.25rem;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-med) var(--ease);
}
.nav__link:hover::after,
.nav__link:focus-visible::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: var(--sp-2); }

.lang-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.75rem;
  height: 2.25rem;
  padding-inline: 0.75rem;
  border: 1px solid var(--line-strong);
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.12em;
  transition: background-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.lang-switch:hover,
.lang-switch:focus-visible {
  background: var(--text);
  border-color: var(--text);
  color: var(--ink);
}

.menu-toggle {
  display: inline-flex;
  align-items: center;
  height: 2.25rem;
  padding: 0 0.875rem;
  border: 1px solid var(--line-strong);
  background: none;
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
}
.menu-toggle__close { display: none; }
.menu-open .menu-toggle__open { display: none; }
.menu-open .menu-toggle__close { display: inline; }

@media (min-width: 1024px) {
  .nav { display: block; }
  .menu-toggle { display: none; }
}

/* Mobil menü paneli */
.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 0;
  z-index: 49;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: var(--sp-5) var(--gutter) var(--sp-5);
  background: var(--bg);
  border-top: 1px solid var(--line);
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-0.5rem);
  transition: opacity var(--t-med) var(--ease), transform var(--t-med) var(--ease), visibility 0s linear var(--t-med);
}
.menu-open .mobile-nav {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity var(--t-med) var(--ease), transform var(--t-med) var(--ease), visibility 0s;
}
.menu-open .site-header { background: var(--bg); }
.menu-open .site-header::before { opacity: 0; }
.mobile-nav__list li + li { border-top: 1px solid var(--line); }
.mobile-nav__link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-block: 1rem;
  font-size: clamp(1.375rem, 1.1rem + 1.5vw, 1.75rem);
  font-weight: 500;
  letter-spacing: -0.01em;
}
.mobile-nav__brands {
  display: grid;
  gap: 0.75rem;
  margin-top: var(--sp-5);
  font-size: var(--fs-small);
  color: var(--text-2);
}
.mobile-nav__brands a { display: inline-flex; align-items: center; gap: 0.625rem; }
@media (min-width: 1024px) {
  .mobile-nav { display: none; }
}
.menu-open { overflow: hidden; }

/* ---------- Açılış (hero) ---------- */
.hero {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 100vh;
  min-height: 100svh;
  padding-top: calc(var(--header-h) + var(--sp-5));
  padding-bottom: clamp(2rem, 1rem + 3vw, 3.5rem);
  overflow: hidden;
}
@media (min-width: 1024px) {
  .hero { min-height: min(100svh, 62.5rem); }
}
.hero__media,
.hero__media img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(to top, rgba(38, 38, 38, 0.92) 0%, rgba(38, 38, 38, 0.55) 38%, rgba(38, 38, 38, 0.1) 70%),
    linear-gradient(to right, rgba(38, 38, 38, 0.45), rgba(38, 38, 38, 0) 65%);
}
.hero__title {
  max-width: 17ch;
  font-size: var(--fs-display);
  font-weight: 500;
  line-height: 1.07;
  letter-spacing: -0.028em;
}
.hero .eyebrow { color: var(--text-2); }

.hero-brands {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(2.5rem, 1.5rem + 4vw, 5rem);
}
@media (min-width: 768px) {
  .hero-brands { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--col-gap); }
}
.hero-brand {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 0.25rem 1rem;
  padding: 1rem 0 1.125rem;
  border-top: 1px solid var(--line-strong);
}
.hero-brand::before {
  content: "";
  position: absolute;
  left: 0; top: -1px;
  width: 2.5rem;
  height: 2px;
  background: var(--accent);
  transform-origin: left;
  transition: transform var(--t-slow) var(--ease);
}
.hero-brand__name {
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.hero-brand__desc {
  grid-column: 1;
  color: var(--text-2);
  font-size: var(--fs-small);
  line-height: 1.5;
}
.hero-brand .arrow { grid-column: 2; grid-row: 1 / span 2; font-size: 1.125rem; }
@media (hover: hover) {
  .hero-brand:hover::before { transform: scaleX(3); }
  .hero-brand:hover .arrow { transform: translate(3px, -3px); }
}
.hero-brand:focus-visible .arrow { transform: translate(3px, -3px); }
@media (min-width: 768px) {
  .hero-brand { padding-block: 1.25rem 0; }
}

/* ---------- Grup tanıtımı ---------- */
.intro__head { grid-column: 1 / -1; }
.intro__body { grid-column: 1 / -1; display: grid; gap: var(--sp-3); }
@media (min-width: 1024px) {
  .intro__head { grid-column: 1 / span 6; }
  .intro__body { grid-column: 7 / span 6; padding-top: 2.5rem; }
}

/* ---------- Markalar ---------- */
.section-head {
  display: grid;
  gap: var(--sp-3) var(--col-gap);
  margin-bottom: clamp(2.5rem, 1.5rem + 3vw, 4.5rem);
}
@media (min-width: 1024px) {
  .section-head { grid-template-columns: repeat(12, minmax(0, 1fr)); align-items: end; }
  .section-head__title { grid-column: 1 / span 6; }
  .section-head__text { grid-column: 8 / span 5; }
}

.brands {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--col-gap);
}
.brands > li { display: flex; }
@media (min-width: 1024px) {
  .brands { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

.brand {
  position: relative;
  display: flex;
  flex: 1;
  flex-direction: column;
  background: var(--bg);
  transition: background-color var(--t-med) var(--ease);
}
.brand__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--surface);
}
.brand__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow) var(--ease), opacity var(--t-slow) var(--ease);
}
.brand__body {
  position: relative;
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: var(--sp-2);
  padding: clamp(1.5rem, 1rem + 1.6vw, 2.5rem);
}
.brand__bar {
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0.16);
  transform-origin: left;
  transition: transform var(--t-slow) var(--ease);
}
.brand__logo {
  width: clamp(9rem, 7.5rem + 4vw, 12rem);
  height: auto;
  margin-bottom: var(--sp-2);
  fill: var(--text);
}
.brand__logo .logo-accent { fill: var(--accent); }
.brand__text { color: var(--text-2); }
.brand__tags {
  color: var(--text-3);
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.14em;
  line-height: 1.6;
  text-transform: uppercase;
}
.brand__link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-2);
  margin-top: auto;
  padding-top: var(--sp-3);
  border-top: 1px solid var(--line);
  font-size: var(--fs-small);
  font-weight: 600;
}
.brand__link .arrow { font-size: 1.125rem; }
.mobile-nav__brands .arrow { font-size: 0.875rem; }

@media (hover: hover) {
  .brand:hover { background: #424242; }
  .brand:hover .brand__media img { transform: scale(1.04); }
  .brand:hover .brand__bar { transform: scaleX(1); }
  .brand:hover .arrow { transform: translate(3px, -3px); }
  .brands:hover .brand:not(:hover) .brand__media img { opacity: 0.72; }
}
.brand:focus-visible { outline-offset: 4px; }
.brand:focus-visible .brand__bar { transform: scaleX(1); }

@media (min-width: 768px) and (max-width: 1023.98px) {
  .brand { flex-direction: row; }
  .brand__media { flex: 0 0 44%; aspect-ratio: auto; min-height: 22rem; }
}

/* ---------- İletişim ---------- */
.contact__info { grid-column: 1 / -1; }
.contact__info .lead { margin-top: var(--sp-3); }
.offices {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-5) var(--col-gap);
}
@media (min-width: 640px) {
  .offices { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .contact__info { grid-column: 1 / span 5; }
  .offices { grid-column: 7 / span 6; padding-top: 2.5rem; }
}
.office {
  display: flex;
  flex-direction: column;
  padding-top: var(--sp-3);
  border-top: 1px solid var(--line-strong);
}
.office .eyebrow { margin-bottom: var(--sp-1); }
.office__city {
  font-size: clamp(1.75rem, 1.4rem + 1.2vw, 2.375rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.office__address {
  margin-top: var(--sp-3);
  color: var(--text-2);
  font-style: normal;
  line-height: 1.65;
}
.office__contact {
  display: grid;
  gap: var(--sp-2);
  margin: var(--sp-4) 0 0;
}
.office__contact dt {
  margin-bottom: 0.125rem;
  color: var(--text-3);
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.office__contact dd { margin: 0; font-weight: 500; }
.office__contact a {
  border-bottom: 1px solid var(--line-strong);
  transition: border-color var(--t-fast) var(--ease);
}
.office__contact a:hover,
.office__contact a:focus-visible { border-color: currentColor; }
.office__map {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  align-self: flex-start;
  margin-top: auto;
  padding-top: var(--sp-4);
  color: var(--text-2);
  font-size: var(--fs-small);
  font-weight: 600;
  transition: color var(--t-fast) var(--ease);
}
.office__map:hover,
.office__map:focus-visible { color: var(--text); }
.office__map:hover .arrow,
.office__map:focus-visible .arrow { transform: translate(3px, -3px); }

/* 404 sayfasındaki düğmeler */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  min-height: 3.25rem;
  padding: 0 1.75rem;
  border: 1px solid var(--text);
  background: var(--text);
  color: var(--ink);
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: background-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.button:hover,
.button:focus-visible { background: transparent; color: var(--text); }

/* ---------- Alt bilgi ---------- */
.site-footer {
  padding-block: clamp(4rem, 3rem + 4vw, 6.5rem) var(--sp-4);
  background: var(--bg-deep);
  color: var(--text-2);
  font-size: var(--fs-small);
}
.footer__top {
  display: grid;
  gap: var(--sp-5) var(--col-gap);
}
@media (min-width: 768px) {
  .footer__top { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .footer__brand { grid-column: 1 / span 12; }
  .footer__col { grid-column: span 4; }
}
@media (min-width: 1024px) {
  .footer__brand { grid-column: 1 / span 5; }
  .footer__col { grid-column: span 2; }
  .footer__col--wide { grid-column: span 3; }
}
.footer__brand .brandmark { width: 7.5rem; margin-bottom: var(--sp-3); }
.footer__brand p { max-width: 26rem; }
.footer__title {
  margin-bottom: var(--sp-2);
  color: var(--text);
  font-size: var(--fs-label);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.footer__list { display: grid; gap: 0.5rem; }
.footer__list a { display: inline-flex; align-items: center; gap: 0.625rem; transition: color var(--t-fast) var(--ease); }
.footer__list a:hover { color: var(--text); }
.footer__list svg { width: 0.75rem; height: 0.75rem; flex: none; fill: var(--accent); }
.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-2);
  margin-top: clamp(3rem, 2rem + 3vw, 5rem);
  padding-top: var(--sp-3);
  border-top: 1px solid var(--line);
  color: var(--text-3);
}
.footer__bottom a:hover { color: var(--text); }

/* ---------- Kaydırınca belirme ---------- */
.reveal-ready .reveal {
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
}
.reveal-ready .reveal.is-visible { opacity: 1; transform: none; }
.reveal-ready .reveal[data-delay="1"] { transition-delay: 0.05s; }
.reveal-ready .reveal[data-delay="2"] { transition-delay: 0.1s; }

/* ---------- Hareketi azalt ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    transition-delay: 0s !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
  .reveal-ready .reveal { opacity: 1; transform: none; }
}

/* ---------- Baskı ---------- */
@media print {
  .site-header, .mobile-nav, .skip-link { display: none !important; }
  body { background: #fff; color: #000; }
  .hero { min-height: 0; color: #000; }
  .hero::after, .hero__media { display: none; }
}