/* ==========================================================================
   ECER ŞİRKETLER GRUBU — Kurumsal Web Sitesi
   Ana Stil Dosyası (BEM metodolojisi, CSS Custom Properties)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS DEĞİŞKENLERİ (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Renk Paleti */
  --color-primary:        #0D2B45;
  --color-primary-dark:   #081D30;
  --color-primary-light:  #143A5C;
  --color-secondary:      #1C4E80;
  --color-secondary-light:#2A6199;
  --color-accent:         #D4AF37;
  --color-accent-light:   #EACD65;
  --color-accent-dark:    #B8860B;
  --color-white:          #FFFFFF;
  --color-off-white:      #F7F9FB;
  --color-light-gray:     #EDF1F5;
  --color-gray:           #8A97A5;
  --color-dark-gray:      #3D4852;
  --color-text:           #33404C;
  --color-border:         #E2E8EE;

  /* Gradyanlar */
  --gradient-primary:   linear-gradient(135deg, #0D2B45 0%, #1C4E80 100%);
  --gradient-dark:      linear-gradient(160deg, #081D30 0%, #0D2B45 55%, #143A5C 100%);
  --gradient-accent:    linear-gradient(135deg, #D4AF37 0%, #EACD65 100%);
  --gradient-overlay:   linear-gradient(180deg, rgba(8,29,48,.55) 0%, rgba(8,29,48,.75) 100%);

  /* Tipografi */
  --font-heading: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --fs-display: clamp(2.6rem, 5.4vw, 4.4rem);
  --fs-h1:      clamp(2.2rem, 4.2vw, 3.4rem);
  --fs-h2:      clamp(1.8rem, 3.2vw, 2.6rem);
  --fs-h3:      clamp(1.3rem, 2vw, 1.6rem);
  --fs-h4:      1.15rem;
  --fs-lead:    clamp(1.05rem, 1.4vw, 1.2rem);
  --fs-body:    1rem;
  --fs-small:   .875rem;
  --fs-tiny:    .78rem;

  /* Boşluklar */
  --space-xs:  .5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  7rem;
  --section-padding: clamp(4rem, 9vw, 7.5rem);

  /* Yuvarlaklık ve Gölgeler */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 100px;
  --shadow-sm: 0 2px 12px rgba(13, 43, 69, .06);
  --shadow-md: 0 10px 34px rgba(13, 43, 69, .10);
  --shadow-lg: 0 24px 60px rgba(13, 43, 69, .16);
  --shadow-accent: 0 12px 30px rgba(212, 175, 55, .28);

  /* Geçişler */
  --ease-out: cubic-bezier(.22, 1, .36, 1);
  --transition: .35s var(--ease-out);
  --transition-slow: .7s var(--ease-out);

  /* Yerleşim */
  --container: 1240px;
  --header-height: 88px;
  --header-height-scrolled: 68px;

  /* Doku (SVG grid deseni) */
  --pattern-grid: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48'%3E%3Cpath d='M48 0H0v48' fill='none' stroke='rgba(255,255,255,.06)' stroke-width='1'/%3E%3C/svg%3E");
  --pattern-grid-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48'%3E%3Cpath d='M48 0H0v48' fill='none' stroke='rgba(13,43,69,.05)' stroke-width='1'/%3E%3C/svg%3E");
}

/* --------------------------------------------------------------------------
   2. RESET & TEMEL
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; border: none; background: none; cursor: pointer; }
input, textarea, select { font: inherit; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.18;
  color: var(--color-primary);
  letter-spacing: -.02em;
}

:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 3px; border-radius: 4px; }

::selection { background: var(--color-accent); color: var(--color-primary-dark); }

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

/* --------------------------------------------------------------------------
   3. YARDIMCI SINIFLAR
   -------------------------------------------------------------------------- */
.container {
  width: min(100% - 3rem, var(--container));
  margin-inline: auto;
}

.container--narrow { max-width: 860px; }

.section { padding-block: var(--section-padding); }
.section--gray { background: var(--color-off-white); }
.section--dark { background: var(--gradient-dark); }
.section--dark h2, .section--dark h3 { color: var(--color-white); }

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

.skip-link {
  position: absolute; top: -60px; left: 1rem; z-index: 2000;
  background: var(--color-primary); color: var(--color-white);
  padding: .8rem 1.4rem; border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  transition: top var(--transition);
}
.skip-link:focus { top: 0; }

/* Bölüm başlığı bileşeni */
.section-head { max-width: 720px; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section-head--center { margin-inline: auto; text-align: center; }
.section-head__tag {
  display: inline-flex; align-items: center; gap: .6rem;
  font-family: var(--font-heading); font-weight: 700;
  font-size: var(--fs-tiny); letter-spacing: .18em; text-transform: uppercase;
  color: var(--color-accent-dark); margin-bottom: 1.1rem;
}
.section-head__tag::before {
  content: ""; width: 34px; height: 2px; background: var(--color-accent); border-radius: 2px;
}
.section-head--center .section-head__tag::after {
  content: ""; width: 34px; height: 2px; background: var(--color-accent); border-radius: 2px;
}
.section-head__title { font-size: var(--fs-h2); margin-bottom: 1.1rem; }
.section-head__desc { color: var(--color-gray); font-size: var(--fs-lead); line-height: 1.75; }
.section--dark .section-head__desc { color: rgba(255,255,255,.65); }
.section--dark .section-head__tag { color: var(--color-accent-light); }

/* --------------------------------------------------------------------------
   4. BUTONLAR
   -------------------------------------------------------------------------- */
.btn {
  position: relative; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: .65rem;
  font-family: var(--font-heading); font-weight: 700; font-size: .95rem;
  padding: 1rem 2.1rem; border-radius: var(--radius-pill);
  transition: transform var(--transition), box-shadow var(--transition),
              background-color var(--transition), color var(--transition);
  will-change: transform;
}
.btn svg { width: 18px; height: 18px; transition: transform var(--transition); }
.btn:hover svg { transform: translateX(4px); }

.btn--primary { background: var(--gradient-accent); color: var(--color-primary-dark); box-shadow: var(--shadow-accent); }
.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 18px 40px rgba(212,175,55,.4); }

.btn--dark { background: var(--color-primary); color: var(--color-white); }
.btn--dark:hover { background: var(--color-secondary); transform: translateY(-3px); box-shadow: var(--shadow-md); }

.btn--outline {
  background: transparent; color: var(--color-white);
  box-shadow: inset 0 0 0 2px rgba(255,255,255,.4);
}
.btn--outline:hover { box-shadow: inset 0 0 0 2px var(--color-white); background: rgba(255,255,255,.08); transform: translateY(-3px); }

.btn--outline-dark { background: transparent; color: var(--color-primary); box-shadow: inset 0 0 0 2px var(--color-border); }
.btn--outline-dark:hover { box-shadow: inset 0 0 0 2px var(--color-primary); transform: translateY(-3px); }

.btn--sm { padding: .7rem 1.5rem; font-size: .85rem; }

/* Ripple efekti (JS ile eklenir) */
.btn__ripple {
  position: absolute; border-radius: 50%; pointer-events: none;
  background: rgba(255,255,255,.45); transform: scale(0);
  animation: ripple .6s ease-out forwards;
}
@keyframes ripple { to { transform: scale(4); opacity: 0; } }

/* Metin bağlantısı */
.link-arrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--font-heading); font-weight: 700; font-size: .92rem;
  color: var(--color-secondary); transition: color var(--transition), gap var(--transition);
}
.link-arrow:hover { color: var(--color-accent-dark); gap: .8rem; }

/* --------------------------------------------------------------------------
   5. KAYDIRMA İLERLEME ÇUBUĞU
   -------------------------------------------------------------------------- */
.scroll-progress {
  position: fixed; top: 0; left: 0; z-index: 1200;
  width: 100%; height: 3px; background: transparent; pointer-events: none;
}
.scroll-progress__bar {
  height: 100%; width: 0; background: var(--gradient-accent);
  transition: width .1s linear;
}

/* --------------------------------------------------------------------------
   6. HEADER & MEGA MENÜ
   -------------------------------------------------------------------------- */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-height);
  transition: height var(--transition), background-color var(--transition),
              box-shadow var(--transition), backdrop-filter var(--transition);
}
.header--transparent { background: transparent; }
.header--scrolled,
.header--solid {
  height: var(--header-height-scrolled);
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 2rem;
}

/* Logo */
.header__logo { display: inline-flex; align-items: center; gap: .8rem; }
.header__logo-mark {
  width: 44px; height: 44px; border-radius: 12px; flex-shrink: 0;
  background: var(--gradient-primary);
  display: grid; place-items: center;
  font-family: var(--font-heading); font-weight: 800; font-size: 1.3rem;
  color: var(--color-accent-light);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition);
}
.header__logo:hover .header__logo-mark { transform: rotate(-6deg) scale(1.05); }
.header__logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.header__logo-name {
  font-family: var(--font-heading); font-weight: 800; font-size: 1.25rem;
  letter-spacing: .04em; color: var(--color-primary); transition: color var(--transition);
}
.header__logo-tagline {
  font-size: .62rem; letter-spacing: .3em; text-transform: uppercase;
  color: var(--color-accent-dark); font-weight: 600;
}
.header--transparent:not(.header--scrolled) .header__logo-name { color: var(--color-white); }
.header--transparent:not(.header--scrolled) .header__logo-tagline { color: var(--color-accent-light); }

/* Navigasyon */
.nav { height: 100%; }
.nav__list { display: flex; height: 100%; }
.nav__item { height: 100%; display: flex; align-items: center; position: relative; }
.nav__link {
  display: inline-flex; align-items: center; gap: .35rem;
  font-family: var(--font-heading); font-weight: 600; font-size: .95rem;
  color: var(--color-dark-gray); padding: .6rem 1.05rem; border-radius: var(--radius-pill);
  transition: color var(--transition), background-color var(--transition);
}
.nav__link svg { width: 14px; height: 14px; transition: transform var(--transition); }
.nav__link:hover, .nav__link--active { color: var(--color-secondary); }
.nav__item:hover .nav__link svg { transform: rotate(180deg); }
.header--transparent:not(.header--scrolled) .nav__link { color: rgba(255,255,255,.85); }
.header--transparent:not(.header--scrolled) .nav__link:hover,
.header--transparent:not(.header--scrolled) .nav__link--active { color: var(--color-white); }

.nav__link--active::after {
  content: ""; position: absolute; bottom: 18px; left: 50%; transform: translateX(-50%);
  width: 20px; height: 3px; border-radius: 3px; background: var(--color-accent);
}

/* Mega Menü */
.mega {
  position: absolute; top: calc(100% - 6px); left: 50%;
  transform: translateX(-50%) translateY(14px);
  min-width: 620px;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  padding: 1.8rem;
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}
.nav__item:hover .mega,
.nav__item:focus-within .mega {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.mega__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .4rem; }
.mega__grid--three { grid-template-columns: repeat(3, 1fr); min-width: 0; }
.mega__link {
  display: flex; gap: .95rem; align-items: flex-start;
  padding: .9rem 1rem; border-radius: var(--radius-sm);
  transition: background-color var(--transition), transform var(--transition);
}
.mega__link:hover { background: var(--color-off-white); transform: translateX(4px); }
.mega__icon {
  width: 42px; height: 42px; flex-shrink: 0; border-radius: 10px;
  background: var(--color-light-gray); color: var(--color-secondary);
  display: grid; place-items: center; transition: background var(--transition), color var(--transition);
}
.mega__icon svg { width: 20px; height: 20px; }
.mega__link:hover .mega__icon { background: var(--gradient-primary); color: var(--color-accent-light); }
.mega__title { font-family: var(--font-heading); font-weight: 700; font-size: .92rem; color: var(--color-primary); }
.mega__desc { font-size: .78rem; color: var(--color-gray); line-height: 1.45; margin-top: .15rem; }

/* Header eylemleri */
.header__actions { display: flex; align-items: center; gap: .8rem; }

.lang-switch {
  display: flex; align-items: center; gap: .15rem;
  font-family: var(--font-heading); font-weight: 700; font-size: .8rem;
}
.lang-switch__btn {
  padding: .35rem .55rem; border-radius: 6px; color: var(--color-gray);
  transition: color var(--transition), background-color var(--transition);
}
.lang-switch__btn--active { color: var(--color-primary); background: var(--color-light-gray); }
.lang-switch__btn:not(.lang-switch__btn--active):hover { color: var(--color-secondary); }
.header--transparent:not(.header--scrolled) .lang-switch__btn { color: rgba(255,255,255,.6); }
.header--transparent:not(.header--scrolled) .lang-switch__btn--active { color: var(--color-white); background: rgba(255,255,255,.14); }

.header__search-btn {
  width: 42px; height: 42px; border-radius: 50%;
  display: grid; place-items: center; color: var(--color-dark-gray);
  transition: background-color var(--transition), color var(--transition), transform var(--transition);
}
.header__search-btn:hover { background: var(--color-light-gray); color: var(--color-secondary); transform: scale(1.06); }
.header__search-btn svg { width: 20px; height: 20px; }
.header--transparent:not(.header--scrolled) .header__search-btn { color: rgba(255,255,255,.85); }
.header--transparent:not(.header--scrolled) .header__search-btn:hover { background: rgba(255,255,255,.12); color: var(--color-white); }

.header__cta { white-space: nowrap; }

/* Hamburger */
.header__toggle {
  display: none; width: 46px; height: 46px; border-radius: 12px;
  place-items: center; flex-direction: column; gap: 5px;
  background: var(--color-light-gray);
}
.header__toggle-line {
  width: 20px; height: 2px; background: var(--color-primary); border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.header__toggle--open .header__toggle-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.header__toggle--open .header__toggle-line:nth-child(2) { opacity: 0; }
.header__toggle--open .header__toggle-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Arama katmanı */
.search-overlay {
  position: fixed; inset: 0; z-index: 1500;
  background: rgba(8, 29, 48, .92); backdrop-filter: blur(12px);
  display: grid; place-items: center;
  opacity: 0; visibility: hidden; transition: opacity var(--transition), visibility var(--transition);
}
.search-overlay--open { opacity: 1; visibility: visible; }
.search-overlay__inner { width: min(92%, 680px); transform: translateY(20px); transition: transform var(--transition-slow); }
.search-overlay--open .search-overlay__inner { transform: translateY(0); }
.search-overlay__label {
  color: var(--color-accent-light); font-family: var(--font-heading);
  font-size: var(--fs-tiny); letter-spacing: .2em; text-transform: uppercase; font-weight: 700;
  display: block; margin-bottom: 1rem;
}
.search-overlay__field { position: relative; }
.search-overlay__input {
  width: 100%; background: transparent; border: none;
  border-bottom: 2px solid rgba(255,255,255,.25);
  color: var(--color-white); font-size: clamp(1.4rem, 3vw, 2.2rem);
  font-family: var(--font-heading); font-weight: 700;
  padding: .8rem 3rem .8rem 0; outline: none;
  transition: border-color var(--transition);
}
.search-overlay__input:focus { border-color: var(--color-accent); }
.search-overlay__input::placeholder { color: rgba(255,255,255,.3); }
.search-overlay__submit {
  position: absolute; right: 0; top: 50%; transform: translateY(-50%);
  color: var(--color-accent-light);
}
.search-overlay__submit svg { width: 28px; height: 28px; }
.search-overlay__close {
  position: absolute; top: 2rem; right: 2.4rem;
  width: 52px; height: 52px; border-radius: 50%;
  display: grid; place-items: center; color: var(--color-white);
  background: rgba(255,255,255,.1); transition: background var(--transition), transform var(--transition);
}
.search-overlay__close:hover { background: rgba(255,255,255,.2); transform: rotate(90deg); }
.search-overlay__hint { margin-top: 1.2rem; color: rgba(255,255,255,.45); font-size: var(--fs-small); }

/* --------------------------------------------------------------------------
   7. HERO
   -------------------------------------------------------------------------- */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: center;
  background: var(--gradient-dark);
  overflow: hidden; color: var(--color-white);
}
.hero__bg { position: absolute; inset: 0; }
.hero__bg::before {
  content: ""; position: absolute; inset: 0;
  background-image: var(--pattern-grid); opacity: .8;
}
.hero__bg::after { content: ""; position: absolute; inset: 0; background: var(--gradient-overlay); }
.hero__glow {
  position: absolute; border-radius: 50%; filter: blur(90px); opacity: .45; pointer-events: none;
}
.hero__glow--one { width: 560px; height: 560px; top: -180px; right: -120px; background: #1C4E80; animation: float 9s ease-in-out infinite; }
.hero__glow--two { width: 420px; height: 420px; bottom: -160px; left: -100px; background: rgba(212,175,55,.5); animation: float 11s ease-in-out infinite reverse; }
@keyframes float { 0%,100% { transform: translateY(0) } 50% { transform: translateY(-34px) } }

.hero__content { position: relative; z-index: 2; max-width: 780px; padding-block: calc(var(--header-height) + 3rem) 6rem; }
.hero__badge {
  display: inline-flex; align-items: center; gap: .6rem;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.16);
  backdrop-filter: blur(8px);
  padding: .55rem 1.2rem; border-radius: var(--radius-pill);
  font-size: var(--fs-tiny); font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--color-accent-light); margin-bottom: 1.8rem;
}
.hero__badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-accent); animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(212,175,55,.5) } 50% { box-shadow: 0 0 0 8px rgba(212,175,55,0) } }

.hero__title { font-size: var(--fs-display); color: var(--color-white); margin-bottom: 1.4rem; }
.hero__title-accent { color: var(--color-accent-light); position: relative; white-space: nowrap; }
.hero__title-accent::after {
  content: ""; position: absolute; left: 0; bottom: 6px; width: 100%; height: 10px;
  background: rgba(212,175,55,.22); border-radius: 4px; z-index: -1;
}
.hero__desc { font-size: var(--fs-lead); color: rgba(255,255,255,.72); max-width: 600px; margin-bottom: 2.4rem; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; }

.hero__scroll {
  position: absolute; bottom: 2.2rem; left: 50%; transform: translateX(-50%);
  z-index: 2; display: flex; flex-direction: column; align-items: center; gap: .7rem;
  color: rgba(255,255,255,.55); font-size: var(--fs-tiny);
  letter-spacing: .22em; text-transform: uppercase;
}
.hero__scroll-line {
  width: 1px; height: 46px; background: rgba(255,255,255,.25); position: relative; overflow: hidden;
}
.hero__scroll-line::after {
  content: ""; position: absolute; top: -50%; left: 0; width: 100%; height: 50%;
  background: var(--color-accent); animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine { 0% { top: -50% } 100% { top: 110% } }

/* Hero istatistik şeridi */
.hero__stats {
  position: absolute; bottom: 0; right: 0; z-index: 3;
  display: flex; gap: 0;
  background: rgba(255,255,255,.06); backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,.1); border-right: 0; border-bottom: 0;
  border-radius: var(--radius-lg) 0 0 0;
  overflow: hidden;
}
.hero__stat { padding: 1.6rem 2.4rem; border-left: 1px solid rgba(255,255,255,.08); }
.hero__stat:first-child { border-left: 0; }
.hero__stat-value { font-family: var(--font-heading); font-weight: 800; font-size: 1.9rem; color: var(--color-accent-light); }
.hero__stat-label { font-size: var(--fs-tiny); color: rgba(255,255,255,.55); letter-spacing: .08em; text-transform: uppercase; }

/* --------------------------------------------------------------------------
   8. SAYFA HERO (iç sayfalar) & BREADCRUMB
   -------------------------------------------------------------------------- */
.page-hero {
  position: relative; padding: calc(var(--header-height) + clamp(3.5rem, 8vw, 6rem)) 0 clamp(3.5rem, 7vw, 5.5rem);
  background: var(--gradient-dark); color: var(--color-white); overflow: hidden;
}
.page-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    var(--pattern-grid),
    linear-gradient(180deg, rgba(8,29,48,.85) 0%, rgba(8,29,48,.55) 35%, rgba(8,29,48,.3) 100%),
    linear-gradient(105deg, rgba(8,29,48,.9) 0%, rgba(13,43,69,.65) 50%, rgba(20,58,92,.35) 100%);
}
.page-hero::after {
  content: ""; position: absolute; top: -160px; right: -160px;
  width: 480px; height: 480px; border-radius: 50%;
  background: radial-gradient(circle, rgba(28,78,128,.85), transparent 65%); filter: blur(40px);
}
.page-hero__inner { position: relative; z-index: 2; max-width: 820px; }
.page-hero__title { font-size: var(--fs-h1); color: var(--color-white); margin: .9rem 0 1.1rem; }
.page-hero__desc { color: rgba(255,255,255,.7); font-size: var(--fs-lead); max-width: 640px; }

.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: .55rem; font-size: var(--fs-small); }
.breadcrumb__link { color: rgba(255,255,255,.55); transition: color var(--transition); }
.breadcrumb__link:hover { color: var(--color-accent-light); }
.breadcrumb__sep { color: rgba(255,255,255,.3); }
.breadcrumb__current { color: var(--color-accent-light); font-weight: 600; }

/* --------------------------------------------------------------------------
   9. GENEL: GÖRSEL PANELLER (SVG/gradyan tabanlı medya alanları)
   -------------------------------------------------------------------------- */
.visual {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  background: var(--gradient-primary); min-height: 320px;
  display: grid; place-items: center; isolation: isolate;
}
.visual::before { content: ""; position: absolute; inset: 0; background-image: var(--pattern-grid); }
.visual::after {
  content: ""; position: absolute; width: 70%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle, rgba(212,175,55,.28), transparent 65%);
  top: -20%; right: -20%; filter: blur(30px);
}
.visual__icon { position: relative; z-index: 2; width: clamp(72px, 10vw, 120px); height: auto; color: rgba(255,255,255,.85); }
.visual__caption {
  position: absolute; z-index: 2; left: 1.6rem; bottom: 1.4rem;
  color: rgba(255,255,255,.85); font-family: var(--font-heading); font-weight: 700;
  display: flex; flex-direction: column; gap: .1rem;
}
.visual__caption small { font-weight: 500; color: rgba(255,255,255,.5); font-size: var(--fs-tiny); letter-spacing: .12em; text-transform: uppercase; }
.visual--tall { min-height: 460px; }
.visual--accent { background: linear-gradient(135deg, #B8860B, #D4AF37 60%, #EACD65); }
.visual--light { background: linear-gradient(135deg, #1C4E80, #2A6199); }

/* Fotoğraflı medya panelleri */
.visual--photo { background-size: cover; background-position: center; background-repeat: no-repeat; }
.visual--photo::before { background-image: linear-gradient(180deg, rgba(8,29,48,.1) 35%, rgba(8,29,48,.8) 100%), var(--pattern-grid); }
.visual--photo .visual__icon { display: none; }
.activity-card__media--photo { background-size: cover; background-position: center; }
.activity-card__media--photo::before { background-image: linear-gradient(180deg, rgba(8,29,48,.25), rgba(8,29,48,.65)), var(--pattern-grid); }
.activity-card__media--photo .activity-card__symbol { display: none; }
.news-card__media--photo { background-size: cover; background-position: center; }
.news-card__media--photo::before { background-image: linear-gradient(180deg, rgba(8,29,48,.1), rgba(8,29,48,.5)), var(--pattern-grid); }
.news-card__media--photo .news-card__media-icon { display: none; }

/* --------------------------------------------------------------------------
   10. HAKKIMIZDA BÖLÜMÜ (ana sayfa)
   -------------------------------------------------------------------------- */
.about { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(2.5rem, 6vw, 5.5rem); align-items: center; }
.about__media { position: relative; }
.about__media .visual { min-height: 500px; }
.about__exp-card {
  position: absolute; right: -1.4rem; bottom: 2.4rem; z-index: 3;
  background: var(--color-white); border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg); padding: 1.5rem 1.9rem;
  display: flex; align-items: center; gap: 1.1rem;
  border: 1px solid var(--color-border);
}
.about__exp-value {
  font-family: var(--font-heading); font-weight: 800; font-size: 2.6rem;
  background: var(--gradient-accent); -webkit-background-clip: text; background-clip: text; color: transparent;
  line-height: 1;
}
.about__exp-label { font-size: var(--fs-small); color: var(--color-gray); line-height: 1.4; max-width: 130px; }

.about__lead { font-size: var(--fs-lead); color: var(--color-dark-gray); font-weight: 500; margin-bottom: 1.2rem; }
.about__text { color: var(--color-gray); margin-bottom: 1.2rem; }

.about__pillars { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 1.8rem 0 2.2rem; }
.about__pillar {
  display: flex; gap: .9rem; align-items: flex-start;
  background: var(--color-off-white); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 1.1rem 1.2rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.about__pillar:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.about__pillar-icon {
  width: 40px; height: 40px; flex-shrink: 0; border-radius: 10px;
  background: var(--gradient-primary); color: var(--color-accent-light);
  display: grid; place-items: center;
}
.about__pillar-icon svg { width: 20px; height: 20px; }
.about__pillar-title { font-size: .95rem; margin-bottom: .1rem; }
.about__pillar-text { font-size: var(--fs-tiny); color: var(--color-gray); line-height: 1.5; }

/* İstatistik ızgarası */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.stat {
  text-align: center; padding: 2.4rem 1.2rem;
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-md); backdrop-filter: blur(8px);
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}
.stat:hover { transform: translateY(-6px); background: rgba(255,255,255,.09); border-color: rgba(212,175,55,.4); }
.stat__value {
  font-family: var(--font-heading); font-weight: 800;
  font-size: clamp(2.2rem, 4vw, 3rem); color: var(--color-accent-light); line-height: 1.1;
}
.stat__suffix { color: var(--color-accent-light); }
.stat__label { color: rgba(255,255,255,.6); font-size: var(--fs-small); margin-top: .4rem; }

/* --------------------------------------------------------------------------
   11. FAALİYET ALANLARI KARTLARI
   -------------------------------------------------------------------------- */
.activities { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.4rem; }
.activity-card {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  background: var(--color-white); border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex; flex-direction: column;
}
.activity-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.activity-card__media { position: relative; height: 200px; background: var(--gradient-primary); overflow: hidden; }
.activity-card__media::before { content: ""; position: absolute; inset: 0; background-image: var(--pattern-grid); }
.activity-card__media::after {
  content: ""; position: absolute; width: 220px; height: 220px; border-radius: 50%;
  background: radial-gradient(circle, rgba(212,175,55,.35), transparent 70%);
  right: -60px; top: -60px; transition: transform var(--transition-slow);
}
.activity-card:hover .activity-card__media::after { transform: scale(1.5); }
.activity-card__symbol {
  position: absolute; inset: 0; display: grid; place-items: center;
  color: rgba(255,255,255,.9); transition: transform var(--transition-slow);
}
.activity-card__symbol svg { width: 64px; height: 64px; }
.activity-card:hover .activity-card__symbol { transform: scale(1.12); }
.activity-card__icon {
  position: absolute; left: 1.6rem; bottom: -26px; z-index: 3;
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--gradient-accent); color: var(--color-primary-dark);
  display: grid; place-items: center; box-shadow: var(--shadow-accent);
  transition: transform var(--transition);
}
.activity-card__icon svg { width: 26px; height: 26px; }
.activity-card:hover .activity-card__icon { transform: translateY(-4px) rotate(-6deg); }
.activity-card__body { padding: 3rem 1.6rem 1.8rem; display: flex; flex-direction: column; flex: 1; }
.activity-card__title { font-size: var(--fs-h4); margin-bottom: .6rem; }
.activity-card__desc { color: var(--color-gray); font-size: var(--fs-small); flex: 1; margin-bottom: 1.4rem; }

/* --------------------------------------------------------------------------
   12. NEDEN ECER — ZAMAN ÇİZELGESİ & DEĞERLER
   -------------------------------------------------------------------------- */
.why { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(2.5rem, 6vw, 5rem); align-items: start; }

.timeline { position: relative; padding-left: 2rem; }
.timeline::before {
  content: ""; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px;
  background: linear-gradient(180deg, var(--color-accent), var(--color-border));
}
.timeline__item { position: relative; padding: 0 0 2.2rem 1.6rem; }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: ""; position: absolute; left: -2rem; top: 6px;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--color-white); border: 4px solid var(--color-accent);
  box-shadow: 0 0 0 4px rgba(212,175,55,.15);
}
.timeline__year {
  font-family: var(--font-heading); font-weight: 800; color: var(--color-accent-dark);
  font-size: var(--fs-small); letter-spacing: .1em;
}
.timeline__title { font-size: var(--fs-h4); margin: .2rem 0 .35rem; }
.timeline__text { color: var(--color-gray); font-size: var(--fs-small); }

.values-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
.value-card {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 1.8rem 1.6rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.value-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.value-card__icon {
  width: 52px; height: 52px; border-radius: 14px; margin-bottom: 1.1rem;
  background: var(--color-light-gray); color: var(--color-secondary);
  display: grid; place-items: center;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}
.value-card__icon svg { width: 24px; height: 24px; }
.value-card:hover .value-card__icon { background: var(--gradient-primary); color: var(--color-accent-light); transform: rotate(-8deg); }
.value-card__title { font-size: var(--fs-h4); margin-bottom: .45rem; }
.value-card__text { color: var(--color-gray); font-size: var(--fs-small); }

/* --------------------------------------------------------------------------
   13. GRUP ŞİRKETLERİ
   -------------------------------------------------------------------------- */
.companies { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.4rem; }
.company-card {
  position: relative; overflow: hidden;
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg); padding: 2.2rem 2rem;
  backdrop-filter: blur(10px);
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
.company-card:hover { transform: translateY(-8px); border-color: rgba(212,175,55,.45); background: rgba(255,255,255,.08); }
.company-card__logo {
  display: inline-flex; align-items: center; gap: .8rem; margin-bottom: 1.4rem;
}
.company-card__logo-mark {
  width: 52px; height: 52px; border-radius: 14px;
  background: var(--gradient-accent); color: var(--color-primary-dark);
  display: grid; place-items: center; font-family: var(--font-heading); font-weight: 800; font-size: 1.15rem;
}
.company-card__name { color: var(--color-white); font-family: var(--font-heading); font-weight: 800; font-size: 1.1rem; line-height: 1.3; }
.company-card__sector { color: var(--color-accent-light); font-size: var(--fs-tiny); letter-spacing: .12em; text-transform: uppercase; font-weight: 600; }
.company-card__desc { color: rgba(255,255,255,.6); font-size: var(--fs-small); margin-bottom: 1.6rem; }
.company-card__link {
  display: inline-flex; align-items: center; gap: .5rem;
  color: var(--color-accent-light); font-family: var(--font-heading); font-weight: 700; font-size: .9rem;
  transition: gap var(--transition);
}
.company-card__link:hover { gap: .85rem; }
.company-card__link svg { width: 16px; height: 16px; }

/* --------------------------------------------------------------------------
   14. HABER KARTLARI
   -------------------------------------------------------------------------- */
.news-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.4rem; }
.news-card {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); overflow: hidden; display: flex; flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}
.news-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.news-card__media { position: relative; height: 210px; overflow: hidden; background: var(--gradient-primary); }
.news-card__media::before { content: ""; position: absolute; inset: 0; background-image: var(--pattern-grid); }
.news-card__media-icon {
  position: absolute; inset: 0; display: grid; place-items: center;
  color: rgba(255,255,255,.75); transition: transform var(--transition-slow);
}
.news-card__media-icon svg { width: 54px; height: 54px; }
.news-card:hover .news-card__media-icon { transform: scale(1.15) rotate(3deg); }
.news-card__media--gold { background: linear-gradient(135deg, #B8860B, #D4AF37); }
.news-card__media--blue { background: linear-gradient(135deg, #1C4E80, #2A6199); }
.news-card__category {
  position: absolute; top: 1.1rem; left: 1.1rem; z-index: 2;
  background: rgba(255,255,255,.92); backdrop-filter: blur(6px);
  color: var(--color-primary); font-family: var(--font-heading); font-weight: 700;
  font-size: var(--fs-tiny); letter-spacing: .06em; text-transform: uppercase;
  padding: .4rem .9rem; border-radius: var(--radius-pill);
}
.news-card__body { padding: 1.7rem 1.6rem; flex: 1; display: flex; flex-direction: column; }
.news-card__date {
  display: inline-flex; align-items: center; gap: .45rem;
  color: var(--color-gray); font-size: var(--fs-tiny); margin-bottom: .7rem;
}
.news-card__date svg { width: 14px; height: 14px; }
.news-card__title { font-size: var(--fs-h4); line-height: 1.4; margin-bottom: .6rem; transition: color var(--transition); }
.news-card:hover .news-card__title { color: var(--color-secondary); }
.news-card__excerpt { color: var(--color-gray); font-size: var(--fs-small); flex: 1; margin-bottom: 1.3rem; }

/* --------------------------------------------------------------------------
   15. SÜRDÜRÜLEBİLİRLİK
   -------------------------------------------------------------------------- */
.sustain { position: relative; overflow: hidden; }
.sustain__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.sustain-card {
  position: relative; padding: 2.4rem 2rem; border-radius: var(--radius-lg);
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
  overflow: hidden; transition: transform var(--transition), border-color var(--transition);
}
.sustain-card:hover { transform: translateY(-8px); border-color: rgba(212,175,55,.4); }
.sustain-card__num {
  position: absolute; top: 1rem; right: 1.4rem;
  font-family: var(--font-heading); font-weight: 800; font-size: 4rem;
  color: rgba(255,255,255,.06); line-height: 1;
}
.sustain-card__icon {
  width: 58px; height: 58px; border-radius: 16px; margin-bottom: 1.4rem;
  background: rgba(212,175,55,.15); color: var(--color-accent-light);
  display: grid; place-items: center;
}
.sustain-card__icon svg { width: 28px; height: 28px; }
.sustain-card__title { color: var(--color-white); font-size: var(--fs-h4); margin-bottom: .6rem; }
.sustain-card__text { color: rgba(255,255,255,.6); font-size: var(--fs-small); }

/* --------------------------------------------------------------------------
   16. CTA BÖLÜMÜ
   -------------------------------------------------------------------------- */
.cta {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  background: var(--gradient-primary); padding: clamp(3rem, 7vw, 5.5rem) clamp(1.8rem, 5vw, 5rem);
  text-align: center; color: var(--color-white); isolation: isolate;
}
.cta::before { content: ""; position: absolute; inset: 0; background-image: var(--pattern-grid); z-index: -1; }
.cta::after {
  content: ""; position: absolute; width: 500px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(212,175,55,.3), transparent 65%);
  top: -240px; left: 50%; transform: translateX(-50%); z-index: -1;
}
.cta__title { color: var(--color-white); font-size: var(--fs-h2); max-width: 680px; margin: 0 auto 1.1rem; }
.cta__desc { color: rgba(255,255,255,.68); max-width: 560px; margin: 0 auto 2.2rem; font-size: var(--fs-lead); }
.cta__actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 1rem; }

/* --------------------------------------------------------------------------
   17. FOOTER
   -------------------------------------------------------------------------- */
.footer { background: var(--color-primary-dark); color: rgba(255,255,255,.65); position: relative; overflow: hidden; }
.footer::before {
  content: ""; position: absolute; top: -200px; right: -200px;
  width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(28,78,128,.5), transparent 65%); filter: blur(50px);
}

.footer__top {
  position: relative; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: clamp(2rem, 5vw, 4rem); padding: clamp(3.5rem, 7vw, 5.5rem) 0 3rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer__brand-desc { font-size: var(--fs-small); margin: 1.3rem 0 1.6rem; max-width: 300px; }

.footer__social { display: flex; gap: .7rem; }
.footer__social-link {
  width: 42px; height: 42px; border-radius: 12px;
  background: rgba(255,255,255,.07); color: rgba(255,255,255,.7);
  display: grid; place-items: center;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}
.footer__social-link:hover { background: var(--gradient-accent); color: var(--color-primary-dark); transform: translateY(-4px); }
.footer__social-link svg { width: 18px; height: 18px; }

.footer__title {
  color: var(--color-white); font-family: var(--font-heading); font-weight: 700;
  font-size: .95rem; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 1.4rem;
}
.footer__list { display: flex; flex-direction: column; gap: .75rem; }
.footer__link {
  font-size: var(--fs-small); display: inline-flex; align-items: center; gap: .5rem;
  transition: color var(--transition), transform var(--transition);
}
.footer__link::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--color-accent); opacity: 0; transition: opacity var(--transition);
}
.footer__link:hover { color: var(--color-accent-light); transform: translateX(4px); }
.footer__link:hover::before { opacity: 1; }

.footer__contact-item { display: flex; gap: .8rem; align-items: flex-start; font-size: var(--fs-small); margin-bottom: 1rem; }
.footer__contact-item svg { width: 18px; height: 18px; flex-shrink: 0; color: var(--color-accent); margin-top: .2rem; }

/* Bülten */
.newsletter { margin-top: 1.6rem; }
.newsletter__form { display: flex; border-radius: var(--radius-pill); overflow: hidden; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.12); }
.newsletter__input {
  flex: 1; min-width: 0; background: transparent; border: none; outline: none;
  color: var(--color-white); padding: .85rem 1.3rem; font-size: var(--fs-small);
}
.newsletter__input::placeholder { color: rgba(255,255,255,.4); }
.newsletter__btn {
  background: var(--gradient-accent); color: var(--color-primary-dark);
  padding: 0 1.4rem; display: grid; place-items: center; transition: filter var(--transition);
}
.newsletter__btn:hover { filter: brightness(1.08); }
.newsletter__btn svg { width: 18px; height: 18px; }
.newsletter__msg { font-size: var(--fs-tiny); margin-top: .6rem; color: var(--color-accent-light); min-height: 1.2em; }

.footer__bottom {
  position: relative; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center;
  gap: 1rem; padding: 1.6rem 0; font-size: var(--fs-tiny);
}
.footer__legal { display: flex; gap: 1.4rem; }
.footer__legal a { transition: color var(--transition); }
.footer__legal a:hover { color: var(--color-accent-light); }

/* Yukarı çık butonu */
.back-to-top {
  position: fixed; right: 1.6rem; bottom: 1.6rem; z-index: 900;
  width: 50px; height: 50px; border-radius: 14px;
  background: var(--gradient-primary); color: var(--color-accent-light);
  display: grid; place-items: center; box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden; transform: translateY(14px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}
.back-to-top--visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-4px); }
.back-to-top svg { width: 20px; height: 20px; }

/* --------------------------------------------------------------------------
   18. İÇ SAYFA BİLEŞENLERİ
   -------------------------------------------------------------------------- */
/* İki sütun içerik bloğu */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem, 6vw, 5rem); align-items: center; }
.split--reverse .split__media { order: 2; }
.split__lead { font-size: var(--fs-lead); color: var(--color-dark-gray); font-weight: 500; margin-bottom: 1.1rem; }
.split__text { color: var(--color-gray); margin-bottom: 1rem; }

/* Özellik listesi */
.check-list { display: flex; flex-direction: column; gap: .8rem; margin: 1.4rem 0; }
.check-list__item { display: flex; gap: .8rem; align-items: flex-start; font-size: var(--fs-small); color: var(--color-dark-gray); }
.check-list__item svg { width: 20px; height: 20px; flex-shrink: 0; color: var(--color-accent-dark); margin-top: .15rem; }

/* Misyon / Vizyon kartları */
.mv-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; }
.mv-card {
  position: relative; border-radius: var(--radius-lg); padding: 2.6rem 2.2rem;
  background: var(--color-white); border: 1px solid var(--color-border); overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.mv-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.mv-card::before {
  content: ""; position: absolute; top: 0; left: 0; width: 100%; height: 5px;
  background: var(--gradient-accent);
}
.mv-card--navy::before { background: var(--gradient-primary); }
.mv-card__icon {
  width: 60px; height: 60px; border-radius: 16px; margin-bottom: 1.4rem;
  background: var(--gradient-primary); color: var(--color-accent-light); display: grid; place-items: center;
}
.mv-card__icon svg { width: 28px; height: 28px; }
.mv-card__title { font-size: var(--fs-h3); margin-bottom: .8rem; }
.mv-card__text { color: var(--color-gray); }

/* Başkan mesajı */
.chairman { display: grid; grid-template-columns: .85fr 1.3fr; gap: clamp(2.5rem, 6vw, 5rem); align-items: start; }
.chairman__quote {
  font-family: var(--font-heading); font-size: clamp(1.25rem, 2.2vw, 1.6rem);
  font-weight: 700; color: var(--color-primary); line-height: 1.5;
  padding-left: 1.6rem; border-left: 4px solid var(--color-accent); margin-bottom: 1.6rem;
}
.chairman__text { color: var(--color-gray); margin-bottom: 1.1rem; }
.chairman__sign { margin-top: 2rem; display: flex; align-items: center; gap: 1.1rem; }
.chairman__sign-avatar {
  width: 62px; height: 62px; border-radius: 50%;
  background: var(--gradient-primary); color: var(--color-accent-light);
  display: grid; place-items: center; font-family: var(--font-heading); font-weight: 800; font-size: 1.3rem;
}
.chairman__sign-name { font-family: var(--font-heading); font-weight: 800; color: var(--color-primary); }
.chairman__sign-role { font-size: var(--fs-small); color: var(--color-gray); }

/* Sertifika / belge kartları */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.cert-card {
  text-align: center; padding: 2.2rem 1.4rem;
  background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.cert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(212,175,55,.5); }
.cert-card__icon {
  width: 62px; height: 62px; margin: 0 auto 1.2rem; border-radius: 50%;
  background: var(--color-light-gray); color: var(--color-secondary); display: grid; place-items: center;
  transition: background var(--transition), color var(--transition);
}
.cert-card:hover .cert-card__icon { background: var(--gradient-accent); color: var(--color-primary-dark); }
.cert-card__icon svg { width: 28px; height: 28px; }
.cert-card__title { font-size: 1rem; margin-bottom: .3rem; }
.cert-card__text { font-size: var(--fs-tiny); color: var(--color-gray); }

/* --------------------------------------------------------------------------
   19. FAALİYET SAYFASI BİLEŞENLERİ
   -------------------------------------------------------------------------- */
/* Hizmet kartları */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; }
.service-card {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 2rem 1.7rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.service-card__icon {
  width: 52px; height: 52px; border-radius: 14px; margin-bottom: 1.2rem;
  background: var(--gradient-primary); color: var(--color-accent-light); display: grid; place-items: center;
  transition: transform var(--transition);
}
.service-card:hover .service-card__icon { transform: rotate(-8deg) scale(1.06); }
.service-card__icon svg { width: 24px; height: 24px; }
.service-card__title { font-size: var(--fs-h4); margin-bottom: .5rem; }
.service-card__text { color: var(--color-gray); font-size: var(--fs-small); }

/* Proje / referans kartları */
.projects { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; }
.project-card { border-radius: var(--radius-lg); overflow: hidden; position: relative; min-height: 340px; display: flex; align-items: flex-end; isolation: isolate; }
.project-card__bg { position: absolute; inset: 0; background: var(--gradient-primary); z-index: -2; transition: transform var(--transition-slow); }
.project-card__bg::before { content: ""; position: absolute; inset: 0; background-image: var(--pattern-grid); }
.project-card:hover .project-card__bg { transform: scale(1.06); }
.project-card--gold .project-card__bg { background: linear-gradient(150deg, #B8860B, #D4AF37); }
.project-card--steel .project-card__bg { background: linear-gradient(150deg, #143A5C, #2A6199); }
.project-card::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, transparent 35%, rgba(8,29,48,.85));
}
.project-card__body { padding: 1.8rem 1.6rem; color: var(--color-white); }
.project-card__tag {
  display: inline-block; font-size: var(--fs-tiny); font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
  color: var(--color-accent-light); margin-bottom: .5rem;
}
.project-card__title { color: var(--color-white); font-size: var(--fs-h4); margin-bottom: .35rem; }
.project-card__meta { font-size: var(--fs-tiny); color: rgba(255,255,255,.6); }

/* Avantajlar */
.advantages { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.advantage {
  padding: 1.8rem 1.5rem; border-radius: var(--radius-md);
  background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.1);
  transition: transform var(--transition), border-color var(--transition);
}
.advantage:hover { transform: translateY(-6px); border-color: rgba(212,175,55,.45); }
.advantage__num { font-family: var(--font-heading); font-weight: 800; font-size: 2rem; color: var(--color-accent-light); }
.advantage__title { color: var(--color-white); font-size: 1rem; margin: .5rem 0 .35rem; }
.advantage__text { color: rgba(255,255,255,.6); font-size: var(--fs-tiny); }

/* Galeri */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 180px; gap: 1rem; }
.gallery__item { border-radius: var(--radius-md); overflow: hidden; position: relative; isolation: isolate; }
.gallery__item--wide { grid-column: span 2; }
.gallery__item--tall { grid-row: span 2; }
.gallery__bg { position: absolute; inset: 0; background: var(--gradient-primary); transition: transform var(--transition-slow); display: grid; place-items: center; color: rgba(255,255,255,.5); }
.gallery__bg::before { content: ""; position: absolute; inset: 0; background-image: var(--pattern-grid); }
.gallery__bg svg { width: 38px; height: 38px; position: relative; }
.gallery__item:nth-child(2n) .gallery__bg { background: linear-gradient(140deg, #143A5C, #2A6199); }
.gallery__item:nth-child(3n) .gallery__bg { background: linear-gradient(140deg, #B8860B, #D4AF37); }
.gallery__item:hover .gallery__bg { transform: scale(1.08); }
.gallery__label {
  position: absolute; left: 1rem; bottom: .9rem; z-index: 2;
  color: var(--color-white); font-size: var(--fs-tiny); font-weight: 600;
  background: rgba(8,29,48,.55); backdrop-filter: blur(6px);
  padding: .3rem .8rem; border-radius: var(--radius-pill);
}

/* SSS Akordeon */
.faq { max-width: 820px; margin-inline: auto; display: flex; flex-direction: column; gap: .9rem; }
.faq__item {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); overflow: hidden; transition: box-shadow var(--transition), border-color var(--transition);
}
.faq__item--open { box-shadow: var(--shadow-md); border-color: rgba(212,175,55,.5); }
.faq__question {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding: 1.3rem 1.6rem; text-align: left;
  font-family: var(--font-heading); font-weight: 700; font-size: 1.02rem; color: var(--color-primary);
}
.faq__icon {
  width: 34px; height: 34px; flex-shrink: 0; border-radius: 50%;
  background: var(--color-light-gray); color: var(--color-secondary);
  display: grid; place-items: center; transition: transform var(--transition), background var(--transition), color var(--transition);
}
.faq__icon svg { width: 16px; height: 16px; }
.faq__item--open .faq__icon { transform: rotate(45deg); background: var(--gradient-accent); color: var(--color-primary-dark); }
.faq__answer { max-height: 0; overflow: hidden; transition: max-height .45s var(--ease-out); }
.faq__answer-inner { padding: 0 1.6rem 1.5rem; color: var(--color-gray); font-size: var(--fs-small); }

/* --------------------------------------------------------------------------
   20. HABERLER — LİSTE & DETAY
   -------------------------------------------------------------------------- */
.news-toolbar {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center;
  gap: 1.2rem; margin-bottom: 2.6rem;
}
.news-filters { display: flex; flex-wrap: wrap; gap: .6rem; }
.news-filter {
  padding: .55rem 1.3rem; border-radius: var(--radius-pill);
  font-family: var(--font-heading); font-weight: 600; font-size: var(--fs-small);
  background: var(--color-white); border: 1px solid var(--color-border); color: var(--color-dark-gray);
  transition: all var(--transition);
}
.news-filter:hover { border-color: var(--color-secondary); color: var(--color-secondary); }
.news-filter--active { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-white); }

.news-search { position: relative; }
.news-search__input {
  width: 280px; max-width: 100%; padding: .75rem 3rem .75rem 1.3rem;
  border-radius: var(--radius-pill); border: 1px solid var(--color-border);
  background: var(--color-white); outline: none; font-size: var(--fs-small);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.news-search__input:focus { border-color: var(--color-secondary); box-shadow: 0 0 0 4px rgba(28,78,128,.1); }
.news-search__icon { position: absolute; right: 1.1rem; top: 50%; transform: translateY(-50%); width: 18px; height: 18px; color: var(--color-gray); pointer-events: none; }

.news-empty { text-align: center; color: var(--color-gray); padding: 3rem 0; display: none; }

/* Sayfalama */
.pagination { display: flex; justify-content: center; gap: .5rem; margin-top: 3rem; }
.pagination__btn {
  min-width: 46px; height: 46px; padding-inline: .8rem; border-radius: 12px;
  display: grid; place-items: center;
  font-family: var(--font-heading); font-weight: 700; font-size: var(--fs-small);
  background: var(--color-white); border: 1px solid var(--color-border); color: var(--color-dark-gray);
  transition: all var(--transition);
}
.pagination__btn:hover { border-color: var(--color-secondary); color: var(--color-secondary); transform: translateY(-2px); }
.pagination__btn--active { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-white); }
.pagination__btn svg { width: 16px; height: 16px; }

/* Haber detay */
.article { max-width: 800px; margin-inline: auto; }
.article__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 1.2rem; margin-bottom: 1.6rem; color: var(--color-gray); font-size: var(--fs-small); }
.article__meta-item { display: inline-flex; align-items: center; gap: .45rem; }
.article__meta-item svg { width: 16px; height: 16px; color: var(--color-accent-dark); }
.article__hero { border-radius: var(--radius-lg); overflow: hidden; margin: 2rem 0; }
.article__body p { margin-bottom: 1.3rem; color: var(--color-text); }
.article__body h2 { font-size: var(--fs-h3); margin: 2.2rem 0 1rem; }
.article__body blockquote {
  border-left: 4px solid var(--color-accent); padding: 1rem 0 1rem 1.6rem; margin: 2rem 0;
  font-family: var(--font-heading); font-weight: 700; font-size: 1.15rem; color: var(--color-primary);
}
.article__tags { display: flex; flex-wrap: wrap; gap: .6rem; margin: 2.4rem 0; }
.article__tag {
  font-size: var(--fs-tiny); font-weight: 600; padding: .4rem 1rem;
  background: var(--color-light-gray); border-radius: var(--radius-pill); color: var(--color-dark-gray);
}

.share { display: flex; align-items: center; gap: .9rem; padding: 1.6rem 0; border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.share__label { font-family: var(--font-heading); font-weight: 700; font-size: var(--fs-small); color: var(--color-primary); }
.share__btn {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--color-light-gray); color: var(--color-dark-gray);
  display: grid; place-items: center; transition: all var(--transition);
}
.share__btn:hover { background: var(--gradient-primary); color: var(--color-accent-light); transform: translateY(-3px); }
.share__btn svg { width: 18px; height: 18px; }

/* --------------------------------------------------------------------------
   21. İLETİŞİM
   -------------------------------------------------------------------------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: clamp(2.5rem, 5vw, 4rem); align-items: start; }

.contact-info { display: flex; flex-direction: column; gap: 1.1rem; }
.contact-info__card {
  display: flex; gap: 1.1rem; align-items: flex-start;
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 1.5rem 1.6rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.contact-info__card:hover { transform: translateX(6px); box-shadow: var(--shadow-md); }
.contact-info__icon {
  width: 50px; height: 50px; flex-shrink: 0; border-radius: 14px;
  background: var(--gradient-primary); color: var(--color-accent-light); display: grid; place-items: center;
}
.contact-info__icon svg { width: 22px; height: 22px; }
.contact-info__title { font-size: 1rem; margin-bottom: .2rem; }
.contact-info__text { font-size: var(--fs-small); color: var(--color-gray); line-height: 1.6; }
.contact-info__text a { color: var(--color-secondary); font-weight: 600; }
.contact-info__text a:hover { color: var(--color-accent-dark); }

/* Form */
.form {
  background: var(--color-white); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: clamp(1.8rem, 4vw, 2.8rem);
  box-shadow: var(--shadow-sm);
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.form__group { margin-bottom: 1.1rem; }
.form__label { display: block; font-family: var(--font-heading); font-weight: 600; font-size: var(--fs-small); color: var(--color-primary); margin-bottom: .45rem; }
.form__label span { color: var(--color-accent-dark); }
.form__input, .form__select, .form__textarea {
  width: 100%; padding: .9rem 1.2rem; border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border); background: var(--color-off-white);
  outline: none; font-size: var(--fs-small); color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.form__input:focus, .form__select:focus, .form__textarea:focus {
  border-color: var(--color-secondary); background: var(--color-white);
  box-shadow: 0 0 0 4px rgba(28,78,128,.08);
}
.form__input--error { border-color: #C0392B !important; }
.form__error { color: #C0392B; font-size: var(--fs-tiny); margin-top: .3rem; min-height: 1em; display: block; }
.form__textarea { resize: vertical; min-height: 130px; }
.form__consent { display: flex; gap: .7rem; align-items: flex-start; font-size: var(--fs-tiny); color: var(--color-gray); margin-bottom: 1.4rem; }
.form__consent input { margin-top: .25rem; accent-color: var(--color-secondary); }
.form__success {
  display: none; text-align: center; padding: 2rem 1rem;
  color: var(--color-primary);
}
.form__success--visible { display: block; }
.form__success svg { width: 60px; height: 60px; color: var(--color-accent-dark); margin: 0 auto 1rem; }

/* Harita */
.map { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--color-border); }
.map iframe { width: 100%; height: 440px; border: 0; display: block; }

/* Departmanlar */
.departments { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; }
.department {
  background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-md);
  padding: 1.8rem 1.6rem; transition: transform var(--transition), box-shadow var(--transition);
}
.department:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.department__title { font-size: var(--fs-h4); margin-bottom: .8rem; display: flex; align-items: center; gap: .7rem; }
.department__title svg { width: 22px; height: 22px; color: var(--color-accent-dark); }
.department__line { font-size: var(--fs-small); color: var(--color-gray); margin-bottom: .35rem; display: flex; gap: .5rem; }
.department__line a { color: var(--color-secondary); font-weight: 600; }

/* --------------------------------------------------------------------------
   22. KARİYER
   -------------------------------------------------------------------------- */
.benefits { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.2rem; }
.benefit {
  text-align: center; padding: 2.2rem 1.4rem;
  background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition);
}
.benefit:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.benefit__icon {
  width: 58px; height: 58px; margin: 0 auto 1.2rem; border-radius: 16px;
  background: var(--color-light-gray); color: var(--color-secondary); display: grid; place-items: center;
  transition: background var(--transition), color var(--transition);
}
.benefit:hover .benefit__icon { background: var(--gradient-primary); color: var(--color-accent-light); }
.benefit__icon svg { width: 26px; height: 26px; }
.benefit__title { font-size: 1rem; margin-bottom: .35rem; }
.benefit__text { font-size: var(--fs-tiny); color: var(--color-gray); }

.job-list { display: flex; flex-direction: column; gap: 1rem; }
.job {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.2rem;
  background: var(--color-white); border: 1px solid var(--color-border); border-radius: var(--radius-md);
  padding: 1.6rem 1.8rem; transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.job:hover { transform: translateX(6px); box-shadow: var(--shadow-md); border-color: rgba(212,175,55,.5); }
.job__title { font-size: var(--fs-h4); margin-bottom: .3rem; }
.job__meta { display: flex; flex-wrap: wrap; gap: 1.1rem; font-size: var(--fs-tiny); color: var(--color-gray); }
.job__meta-item { display: inline-flex; align-items: center; gap: .4rem; }
.job__meta-item svg { width: 14px; height: 14px; color: var(--color-accent-dark); }

/* --------------------------------------------------------------------------
   23. SCROLL REVEAL ANİMASYONLARI
   -------------------------------------------------------------------------- */
[data-reveal] { opacity: 0; transition: opacity .8s var(--ease-out), transform .8s var(--ease-out); will-change: opacity, transform; }
[data-reveal="up"]    { transform: translateY(44px); }
[data-reveal="left"]  { transform: translateX(-44px); }
[data-reveal="right"] { transform: translateX(44px); }
[data-reveal="zoom"]  { transform: scale(.9); }
[data-reveal].is-revealed { opacity: 1; transform: none; }

/* Kademeli gecikme yardımcıları */
[data-reveal-delay="1"] { transition-delay: .1s; }
[data-reveal-delay="2"] { transition-delay: .2s; }
[data-reveal-delay="3"] { transition-delay: .3s; }
[data-reveal-delay="4"] { transition-delay: .4s; }
[data-reveal-delay="5"] { transition-delay: .5s; }

/* --------------------------------------------------------------------------
   24. RESPONSIVE
   -------------------------------------------------------------------------- */
@media (max-width: 1100px) {
  .header__cta { display: none; }
  .nav__link { padding-inline: .75rem; }
  .mega { min-width: 560px; }
  .about { grid-template-columns: 1fr; }
  .about__media .visual { min-height: 400px; }
  .why { grid-template-columns: 1fr; }
  .chairman { grid-template-columns: 1fr; }
  .cert-grid, .advantages, .benefits { grid-template-columns: repeat(2, 1fr); }
  .services, .projects, .departments { grid-template-columns: repeat(2, 1fr); }
  .sustain__grid { grid-template-columns: 1fr 1fr; }
  .footer__top { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero__stats { position: static; margin-top: 3rem; border-radius: var(--radius-md); border: 1px solid rgba(255,255,255,.1); flex-wrap: wrap; }
}

@media (max-width: 860px) {
  :root { --header-height: 72px; --header-height-scrolled: 64px; }

  /* Mobil navigasyon */
  .header__toggle { display: grid; }
  .lang-switch { display: none; }
  .nav {
    position: fixed; top: 0; right: 0; bottom: 0; width: min(88%, 380px); height: 100dvh; z-index: 1400;
    background: var(--color-white); box-shadow: var(--shadow-lg);
    transform: translateX(105%); transition: transform .45s var(--ease-out);
    overflow-y: auto; padding: 5.5rem 1.6rem 2.4rem;
  }
  .nav--open { transform: translateX(0); }
  .nav__list { flex-direction: column; height: auto; gap: .2rem; }
  .nav__item { height: auto; display: block; }
  .nav__link { width: 100%; justify-content: space-between; padding: .95rem 1rem; color: var(--color-primary) !important; font-size: 1.05rem; border-radius: var(--radius-sm); }
  .nav__link--active { background: var(--color-off-white); }
  .nav__link--active::after { display: none; }
  .mega {
    position: static; transform: none; min-width: 0; opacity: 1; visibility: visible; pointer-events: auto;
    box-shadow: none; border: none; padding: 0 0 .6rem .6rem; display: none; border-radius: 0;
  }
  .nav__item--open .mega { display: block; }
  .mega__grid, .mega__grid--three { grid-template-columns: 1fr; gap: .1rem; }
  .nav__backdrop {
    position: fixed; inset: 0; z-index: 1300; background: rgba(8,29,48,.5);
    opacity: 0; visibility: hidden; transition: opacity var(--transition), visibility var(--transition);
  }
  .nav__backdrop--visible { opacity: 1; visibility: visible; }

  .hero__stats { flex-direction: column; }
  .hero__stat { border-left: 0; border-top: 1px solid rgba(255,255,255,.08); }
  .about__pillars, .values-grid, .mv-grid, .split { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .sustain__grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .about__exp-card { right: 1rem; }
  .news-toolbar { flex-direction: column; align-items: stretch; }
  .news-search__input { width: 100%; }
}

@media (max-width: 560px) {
  .services, .projects, .departments, .cert-grid, .advantages, .benefits, .footer__top { grid-template-columns: 1fr; }
  .hero__actions .btn { width: 100%; }
  .form__row { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; grid-auto-rows: 200px; }
  .gallery__item--wide, .gallery__item--tall { grid-column: auto; grid-row: auto; }
  .job { flex-direction: column; align-items: flex-start; }
  .cta__actions .btn { width: 100%; }
}

/* --------------------------------------------------------------------------
   25. YAZDIRMA
   -------------------------------------------------------------------------- */
@media print {
  .header, .footer, .back-to-top, .scroll-progress, .search-overlay, .hero__scroll { display: none !important; }
  body { color: #000; }
  [data-reveal] { opacity: 1 !important; transform: none !important; }
}