@import url("https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap");

:root {
  color-scheme: light;
  --color-primary: #0d9488;
  --color-primary-dark: #0f766e;
  --color-primary-light: #14b8a6;
  --color-secondary: #0284c7;
  --color-dark: #0f172a;
  --color-muted: #64748b;
  --color-bg: #f1f5f9;
  --color-bg-elevated: #ffffff;
  --color-white: #ffffff;
  --color-border: #e2e8f0;
  --color-header-bg: rgba(255, 255, 255, 0.82);
  --color-card-shadow: rgba(15, 23, 42, 0.06);
  --color-card-hover-border: #5eead4;
  --color-card-icon-bg: linear-gradient(145deg, #ccfbf1 0%, #e0f2fe 100%);
  --font-sans: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 8px 32px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 24px 48px rgba(15, 23, 42, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --header-h: 92px;
  --color-brand-navy: #0f2744;
  --color-brand-green: #2d6a4f;
  --logo-name-integrity: #16a34a;
  --color-footer-bg: #0b1220;
  --color-footer-text: #94a3b8;
  --color-footer-heading: #f8fafc;
  --color-footer-link: #cbd5e1;
  --color-footer-link-hover: #ffffff;
  --color-footer-border: #1e293b;
  --max-w: 1200px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

[data-theme="dark"] {
  color-scheme: dark;
  --color-dark: #f1f5f9;
  --color-muted: #94a3b8;
  --color-bg: #1e293b;
  --color-bg-elevated: #0f172a;
  --color-white: #0f172a;
  --color-border: #334155;
  --color-footer-bg: #020617;
  --color-footer-border: #1e293b;
  --color-header-bg: rgba(15, 23, 42, 0.88);
  --color-card-shadow: rgba(0, 0, 0, 0.3);
  --color-card-hover-border: #2dd4bf;
  --color-card-icon-bg: linear-gradient(145deg, #134e4a 0%, #1e3a5f 100%);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 24px 48px rgba(0, 0, 0, 0.5);
  --color-brand-navy: #e2e8f0;
  --logo-name-integrity: #4ade80;
}

[data-theme="dark"] .nav-submenu {
  background: var(--color-bg-elevated);
}

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

html {
  scroll-behavior: smooth;
}

/* Sayfa geçişi — logo ve slogan */
html.is-page-transition-pending body {
  visibility: hidden;
}

html.is-page-transition-active {
  overflow: hidden;
}

.page-transition {
  --page-transition-fade: 0.3s;
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: var(--color-bg);
  opacity: 0;
  visibility: visible;
  pointer-events: none;
  transition: opacity var(--page-transition-fade) var(--ease-out);
}

.page-transition.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.page-transition.is-hiding {
  opacity: 0;
  pointer-events: none;
}

.page-transition__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.85rem;
  max-width: 28rem;
}

.page-transition__logo {
  width: 128px;
  height: 128px;
  object-fit: contain;
}

.page-transition__name {
  margin: 0;
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.page-transition__tagline {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--color-muted);
  line-height: 1.45;
}

@media (prefers-reduced-motion: reduce) {
  .page-transition {
    --page-transition-fade: 0.4s;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-dark);
  background: var(--color-bg-elevated);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.2s var(--ease-out);
}

a:hover {
  color: var(--color-secondary);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 9999;
  padding: 0.75rem 1rem;
  background: var(--color-dark);
  color: var(--color-footer-heading);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.container {
  width: min(100% - 2.5rem, var(--max-w));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-header-bg);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid color-mix(in srgb, var(--color-border) 80%, transparent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.lang-toggle,
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-width: 2.5rem;
  height: 2.5rem;
  padding: 0 0.55rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  color: var(--color-brand-navy);
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  transition: background 0.2s var(--ease-out), border-color 0.2s var(--ease-out), transform 0.2s var(--ease-out);
}

.theme-toggle {
  padding: 0;
  width: 2.5rem;
}

.lang-toggle:hover,
.theme-toggle:hover {
  background: var(--color-bg-elevated);
  border-color: var(--color-primary-light);
  transform: translateY(-1px);
}

.lang-icon {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.theme-icon {
  width: 1.25rem;
  height: 1.25rem;
}

.theme-icon-moon {
  display: none;
}

html[data-theme="dark"] .theme-toggle .theme-icon-sun {
  display: none;
}

html[data-theme="dark"] .theme-toggle .theme-icon-moon {
  display: block;
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 1rem;
}

@media (min-width: 993px) {
  .header-inner {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    grid-template-areas: "logo nav actions";
    align-items: center;
    column-gap: 1.25rem;
  }

  .logo-link {
    grid-area: logo;
  }

  .main-nav {
    grid-area: nav;
    justify-self: center;
    min-width: 0;
  }

  .header-actions {
    grid-area: actions;
    justify-self: end;
  }

  .main-nav > ul {
    flex-wrap: nowrap;
    justify-content: center;
    gap: 0.35rem;
  }

  .main-nav a {
    white-space: nowrap;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-pill);
    border-bottom: none;
  }

  .nav-toggle {
    display: none;
  }
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-link:hover {
  color: inherit;
}

.logo-link img {
  height: 76px;
  width: auto;
  object-fit: contain;
  flex-shrink: 0;
}

.logo-brand {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.logo-text {
  font-size: 1.425rem;
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  white-space: nowrap;
}

.logo-tagline {
  font-size: 0.7rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-muted);
  letter-spacing: 0.01em;
  max-width: 13rem;
}

.site-header .logo-link {
  align-items: center;
}

.logo-text-geo {
  color: var(--color-brand-navy);
}

.logo-text-integrity {
  color: var(--logo-name-integrity);
}

.logo-link:hover .logo-text-integrity {
  color: #22c55e;
}

[data-theme="dark"] .logo-link:hover .logo-text-integrity {
  color: #6ee7b7;
}

@media (max-width: 480px) {
  :root {
    --header-h: 76px;
  }

  .container {
    width: min(100% - 1.25rem, var(--max-w));
  }

  .site-header .logo-link img {
    height: 48px;
  }

  .site-header .logo-text {
    font-size: 0.95rem;
    letter-spacing: -0.04em;
  }

  .site-header .logo-tagline {
    font-size: 0.6rem;
    max-width: 9.5rem;
    line-height: 1.25;
  }

  .site-header .logo-link {
    gap: 0.45rem;
  }

  .lang-toggle,
  .theme-toggle,
  .nav-toggle {
    min-width: 2.125rem;
    height: 2.125rem;
    padding: 0;
  }

  .theme-toggle {
    width: 2.125rem;
  }

  .lang-toggle .lang-toggle-code {
    display: none;
  }

  .lang-toggle {
    width: 2.125rem;
  }
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  border-radius: var(--radius-pill);
  padding: 0.5rem;
  cursor: pointer;
  color: var(--color-brand-navy);
  line-height: 0;
  transition: background 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}

.nav-toggle:hover {
  background: var(--color-bg-elevated);
  border-color: var(--color-primary-light);
}

.nav-toggle-icon {
  display: block;
  width: 1.5rem;
  height: 1.5rem;
}

.main-nav > ul {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  text-decoration: none;
  color: var(--color-muted);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  transition: color 0.2s var(--ease-out), background 0.2s var(--ease-out);
}

.main-nav a:hover {
  color: var(--color-primary-dark);
  background: color-mix(in srgb, var(--color-primary) 10%, transparent);
}

.main-nav a[aria-current="page"] {
  color: var(--color-primary-dark);
  background: color-mix(in srgb, var(--color-primary) 14%, transparent);
}

.nav-item-has-submenu {
  position: relative;
}

.nav-services-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.nav-services-link::after {
  content: "";
  flex-shrink: 0;
  width: 0.45rem;
  height: 0.45rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translateY(-2px);
  opacity: 0.75;
  transition: transform 0.2s var(--ease-out);
}

.nav-item-has-submenu.is-open > .nav-services-link::after {
  transform: rotate(-135deg) translateY(1px);
}

.nav-submenu {
  display: none;
  flex-direction: column;
  align-items: stretch;
  list-style: none;
  margin: 0;
  padding: 0.35rem;
  min-width: 14rem;
  gap: 0.15rem;
}

.nav-item-has-submenu.is-open > .nav-submenu {
  display: flex;
}

@media (min-width: 993px) {
  .main-nav {
    overflow: visible;
  }

  .nav-item-has-submenu:hover > .nav-submenu,
  .nav-item-has-submenu:focus-within > .nav-submenu {
    display: flex;
  }

  .nav-submenu {
    position: absolute;
    top: calc(100% + 0.35rem);
    left: 50%;
    transform: translateX(-50%);
    z-index: 200;
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 0.5rem;
  }

  .nav-submenu li {
    width: 100%;
  }

  .nav-submenu a {
    display: block;
    white-space: nowrap;
    border-radius: var(--radius-sm);
  }

  .nav-services-link::after {
    transform: rotate(45deg) translateY(-2px);
  }
}

@media (max-width: 992px) {
  .nav-item-has-submenu {
    width: 100%;
    text-align: center;
  }

  .main-nav .nav-services-link {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    text-align: center;
    cursor: pointer;
  }

  .nav-submenu {
    width: 100%;
    align-items: center;
    padding: 0.25rem 0 0.5rem;
    margin: 0;
    min-width: 0;
    border-left: none;
    background: transparent;
  }

  .nav-submenu li {
    width: 100%;
    text-align: center;
  }

  .nav-submenu a {
    display: block;
    font-size: 0.95rem;
    padding: 0.65rem 1rem;
    text-align: center;
  }
}

/* Hero banner / slider (ana sayfa) */
.hero-banner {
  margin: 0;
  padding: 0;
  line-height: 0;
  width: 100%;
  max-width: 100%;
  background: var(--color-bg-elevated);
}

.hero-slider {
  position: relative;
  width: 100%;
  max-width: 100%;
  display: block;
}

.hero-slider-viewport {
  position: relative;
  overflow: hidden;
  width: 100%;
  --hero-viewport-h: calc(100svh - var(--header-h));
  height: var(--hero-viewport-h);
  height: calc(100dvh - var(--header-h));
  min-height: var(--hero-viewport-h);
  min-height: calc(100dvh - var(--header-h));
  max-height: none;
  background: #0b1220;
}

.hero-slider-track {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  height: 100%;
  transition: transform 0.55s var(--ease-out);
  will-change: transform;
}

.hero-slider-track.is-instant {
  transition: none;
}

.hero-slide {
  flex: 0 0 100%;
  width: 100%;
  height: 100%;
  margin: 0;
}

.hero-slide picture {
  display: block;
  width: 100%;
  height: 100%;
  line-height: 0;
  overflow: hidden;
}

.hero-slide img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center center;
}

/* Masaüstü: 1920×960 (2:1) */
@media (min-width: 993px) {
  .hero-slider-viewport {
    --hero-viewport-h: max(480px, calc(100svh - var(--header-h)));
    height: var(--hero-viewport-h);
    min-height: var(--hero-viewport-h);
    max-height: min(calc(100svh - var(--header-h)), 70vh);
  }

  .hero-slider .hero-slide img {
    object-position: center 28%;
  }
}

/* Geniş masaüstü */
@media (min-width: 1400px) {
  .hero-slider-viewport {
    max-height: min(calc(100svh - var(--header-h)), 820px);
  }
}

/* Slider hemen altındaki bölüm — gereksiz boşluk olmasın */
.hero-slider + .section {
  padding-top: clamp(2.5rem, 5vw, 3.75rem);
}

.hero-slider-ui {
  position: absolute;
  left: 50%;
  bottom: max(1.25rem, env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-pill);
  background: rgba(15, 23, 42, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.hero-slider:not(.has-multiple) .hero-slider-ui {
  display: none;
}

.hero-slider-dots {
  --hero-dot-seg: 2.25rem;
  --hero-dot-gap: 0.25rem;
  display: flex;
  align-items: stretch;
  gap: var(--hero-dot-gap);
  width: calc(
    var(--hero-dot-count, 2) * var(--hero-dot-seg) +
      (var(--hero-dot-count, 2) - 1) * var(--hero-dot-gap)
  );
  height: 0.3rem;
  padding: 0;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.22);
}

.hero-slider-dot {
  position: relative;
  flex: 1 1 0;
  min-width: 0;
  width: auto;
  height: 100%;
  margin: 0;
  padding: 0;
  border: none;
  border-radius: var(--radius-pill);
  background: transparent;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  transition: background 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.hero-slider-dot::after {
  content: "";
  position: absolute;
  left: -0.35rem;
  right: -0.35rem;
  top: -0.85rem;
  bottom: -0.85rem;
}

.hero-slider-dot:hover:not(.is-active) {
  background: rgba(255, 255, 255, 0.4);
}

.hero-slider-dot.is-active {
  background: linear-gradient(90deg, var(--color-primary-dark), var(--color-primary-light));
  box-shadow: 0 0 10px rgba(20, 184, 166, 0.5);
}

.hero-slider-dot:focus-visible {
  outline: 2px solid rgba(255, 255, 255, 0.95);
  outline-offset: 4px;
}

/* Tablet yatay + mobil yatay: 1920×960 */
@media (max-width: 992px) and (orientation: landscape) {
  .hero-slider-viewport {
    --hero-viewport-h: calc(100svh - var(--header-h));
    height: var(--hero-viewport-h);
    min-height: max(320px, var(--hero-viewport-h));
    max-height: none;
  }

  .hero-slider .hero-slide img {
    object-position: center 30%;
  }

  .hero-slider-ui {
    bottom: max(0.5rem, env(safe-area-inset-bottom, 0px));
  }

  .hero-slider + .section {
    padding-top: 2rem;
  }
}

/* Mobil + tablet dikey: 1080×1920, tam ekran */
@media (max-width: 992px) and (orientation: portrait) {
  .hero-slider-viewport {
    width: 100%;
    max-width: 100%;
    --hero-viewport-h: calc(100svh - var(--header-h));
    height: var(--hero-viewport-h);
    height: calc(100dvh - var(--header-h));
    min-height: var(--hero-viewport-h);
    min-height: calc(100dvh - var(--header-h));
    max-height: none;
  }

  .hero-slider .hero-slide img {
    object-fit: cover;
    object-position: center 16%;
  }

  .hero-slider .hero-slide:last-child:not(:only-child) img {
    object-position: center 14%;
  }

  .hero-slider-ui {
    bottom: max(0.85rem, env(safe-area-inset-bottom, 0px));
  }

  .hero-slider + .section {
    padding-top: 2.5rem;
  }
}

/* Küçük telefon (dikey) */
@media (max-width: 480px) and (orientation: portrait) {
  .hero-slider-viewport {
    min-height: calc(100svh - var(--header-h));
  }

  .hero-slider .hero-slide img {
    object-position: center 15%;
  }

  .hero-slider .hero-slide:last-child:not(:only-child) img {
    object-position: center 13%;
  }

  .hero-slider-ui {
    bottom: max(0.65rem, env(safe-area-inset-bottom, 0px));
    padding: 0.4rem 0.7rem;
  }
}

/* Orta tablet dikey (iPad vb.) */
@media (min-width: 600px) and (max-width: 992px) and (orientation: portrait) {
  .hero-slider .hero-slide img {
    object-position: center 17%;
  }

  .hero-slider .hero-slide:last-child:not(:only-child) img {
    object-position: center 15%;
  }
}

/* Kısa ekran (yatay telefon vb.) */
@media (max-height: 500px) and (max-width: 992px) {
  .hero-slider-viewport {
    min-height: 260px;
    max-height: calc(100svh - var(--header-h));
  }

  .hero-slider .hero-slide img {
    object-position: center 26%;
  }
}

/* Çok uzun dikey telefon */
@media (min-height: 800px) and (max-width: 992px) and (orientation: portrait) {
  .hero-slider .hero-slide img {
    object-position: center 18%;
  }

  .hero-slider .hero-slide:last-child:not(:only-child) img {
    object-position: center 16%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-slider-track {
    transition: none;
  }
}

/* Hero (metin — diğer kullanımlar) */
.hero {
  position: relative;
  min-height: clamp(440px, 72vh, 560px);
  display: flex;
  align-items: center;
  color: #fff;
  background: #0c4a6e;
  overflow: hidden;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(135deg, #042f2e 0%, #0f766e 28%, #0369a1 58%, #0f172a 100%);
}

.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 10% 100%, rgba(45, 212, 191, 0.35), transparent 55%),
    radial-gradient(ellipse 50% 50% at 90% 10%, rgba(56, 189, 248, 0.25), transparent 50%);
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.4;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, black 20%, transparent 95%);
}

.hero .container {
  position: relative;
  z-index: 1;
  padding-block: clamp(3rem, 8vw, 5rem);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 1.25rem;
  padding: 0.4rem 1rem 0.4rem 0.85rem;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #ecfdf5;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-pill);
  backdrop-filter: blur(8px);
}

.hero-badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 12px #34d399;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin: 0 0 1.25rem;
  max-width: 16ch;
}

.hero p {
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  line-height: 1.65;
  opacity: 0.92;
  max-width: 48ch;
  margin: 0 0 2rem;
  font-weight: 500;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.85rem 1.65rem;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.9375rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out), background 0.2s var(--ease-out);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: #fff;
  color: var(--color-primary-dark);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.btn-primary:hover {
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
  color: var(--color-secondary);
}

.btn-outline {
  border-color: rgba(255, 255, 255, 0.55);
  color: #fff;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(4px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.85);
  color: #fff;
}

.btn-text {
  padding: 0.65rem 1.25rem;
  background: transparent;
  color: var(--color-primary-dark);
  border-color: transparent;
  box-shadow: none;
}

.btn-text:hover {
  background: color-mix(in srgb, var(--color-primary) 10%, transparent);
  transform: none;
  color: var(--color-primary-dark);
}

/* Sections */
.section {
  padding: clamp(3.5rem, 8vw, 5.5rem) 0;
}

.section-alt {
  background: var(--color-bg);
}

.section-header {
  text-align: center;
  max-width: 40rem;
  margin: 0 auto 3rem;
}

.section-eyebrow {
  display: block;
  margin-bottom: 0.65rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.section-header h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.35rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 0.85rem;
  color: var(--color-dark);
}

.section-header p {
  color: var(--color-muted);
  margin: 0;
  font-size: 1.0625rem;
}

.section-cta-link {
  text-align: center;
  margin-top: 2rem;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.25rem;
}

.card {
  position: relative;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out), border-color 0.25s var(--ease-out);
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(145deg, transparent, color-mix(in srgb, var(--color-primary) 30%, transparent));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.25s var(--ease-out);
  pointer-events: none;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--color-card-hover-border);
}

.card:hover::before {
  opacity: 1;
}

.card h3 {
  margin: 0 0 0.65rem;
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.card h3 a {
  color: inherit;
  text-decoration: none;
}

.card h3 a:hover {
  color: var(--color-primary);
}

.card p {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: var(--color-card-icon-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--color-primary-dark);
  margin-bottom: 1.15rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

[data-theme="dark"] .card-icon {
  color: var(--color-primary-light);
  box-shadow: none;
}

/* About blocks */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-intro > div > h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
}

.about-intro p {
  color: var(--color-muted);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 3rem;
}

.values-grid--stacked {
  margin-top: 0;
}

.value-box {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: box-shadow 0.2s var(--ease-out), transform 0.2s var(--ease-out);
}

.value-box:hover {
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.value-box h3 {
  margin: 0 0 0.5rem;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.value-box p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.55;
}

/* Service detail */
.page-hero {
  position: relative;
  background: var(--color-bg);
  padding: clamp(2.5rem, 6vw, 4rem) 0;
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
}

.page-hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.page-hero .container > p,
.page-hero p {
  color: var(--color-muted);
  font-size: 1.0625rem;
  max-width: 52ch;
  margin: 0;
}

.breadcrumb {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin: 0 0 1rem;
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.breadcrumb a {
  text-decoration: none;
}

.prose {
  max-width: 72ch;
}

.prose h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 2.5rem 0 0.85rem;
  color: var(--color-dark);
  letter-spacing: -0.02em;
}

.prose h3 {
  font-size: 1.0625rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--color-brand-navy);
  font-weight: 700;
}

.prose h4 {
  font-size: 0.95rem;
  margin: 1rem 0 0.4rem;
  color: var(--color-brand-navy);
}

.prose p,
.prose li {
  color: var(--color-muted);
}

.prose ul,
.prose ol {
  padding-left: 1.25rem;
}

.prose li {
  margin-bottom: 0.5rem;
}

.prose ol li {
  padding-left: 0.25rem;
}

.check-list {
  list-style: none;
  padding: 0;
}

.check-list li {
  padding-left: 1.75rem;
  position: relative;
  margin-bottom: 0.75rem;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background: color-mix(in srgb, var(--color-primary) 18%, transparent);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230d9488'%3E%3Cpath d='M12.2 4.2 6.5 9.9 3.8 7.2l-1.1 1.1L6.5 12.1l6.8-6.8z'/%3E%3C/svg%3E");
  background-size: 10px;
  background-repeat: no-repeat;
  background-position: center;
}

/* Faaliyet alanları */
.activity-block {
  margin-bottom: 3rem;
}

.activity-block--compact {
  margin-bottom: 0;
}

.activity-block:last-child {
  margin-bottom: 0;
}

.activity-block h2,
.activity-block__title {
  font-size: clamp(1.15rem, 2.5vw, 1.35rem);
  font-weight: 700;
  color: var(--color-brand-navy);
  margin: 0 0 1.25rem;
  padding-bottom: 0.65rem;
  border-bottom: none;
  position: relative;
  letter-spacing: -0.02em;
}

.activity-block h2::after,
.activity-block__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 3rem;
  height: 3px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-primary), var(--color-brand-green));
}

.activity-block > p {
  color: var(--color-muted);
  margin: -0.5rem 0 1.25rem;
  font-size: 0.9375rem;
}

.activity-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.65rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

/* Ana sayfa — 4 sütun */
.activity-list--home {
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}

@media (max-width: 1100px) {
  .activity-list--home {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .activity-list--home {
    grid-template-columns: 1fr;
  }
}

.activity-list li {
  padding: 1rem 1.15rem;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-dark);
  line-height: 1.45;
  transition: border-color 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}

.activity-list li:hover {
  border-color: var(--color-card-hover-border);
  box-shadow: var(--shadow-sm);
}

.section-alt .activity-list li {
  background: var(--color-white);
}

[data-theme="dark"] .section-alt .activity-list li {
  background: var(--color-bg-elevated);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.contact-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.contact-card h2 {
  margin-top: 0;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.contact-card dl {
  margin: 0;
}

.contact-card dt {
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  margin-top: 1.25rem;
}

.contact-card dt:first-child {
  margin-top: 0;
}

.contact-card dd {
  margin: 0.35rem 0 0;
  font-weight: 500;
}

/* Footer */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 4rem 0 1.5rem;
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
  opacity: 0.5;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.site-footer .footer-logo img {
  height: 52px;
  width: auto;
}

.site-footer .footer-logo .logo-text {
  font-size: 1.425rem;
}

.site-footer .logo-text-geo {
  color: var(--color-footer-heading);
}

.site-footer .logo-text-integrity {
  color: var(--logo-name-integrity);
}

.footer-brand > p {
  margin: 0;
  max-width: 32ch;
  color: var(--color-footer-text);
  line-height: 1.6;
}

.site-footer h2,
.site-footer h3 {
  color: var(--color-footer-heading);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 1rem;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer li {
  margin-bottom: 0.55rem;
}

.site-footer a {
  color: var(--color-footer-link);
  text-decoration: none;
  transition: color 0.2s var(--ease-out);
}

.site-footer a:hover {
  color: var(--color-footer-link-hover);
}

.footer-bottom {
  border-top: 1px solid var(--color-footer-border);
  padding-top: 1.5rem;
  font-size: 0.875rem;
  text-align: center;
  color: var(--color-footer-text);
}

.cta-band {
  position: relative;
  background: linear-gradient(135deg, #0f766e 0%, #0369a1 50%, #1e3a8a 100%);
  color: #fff;
  text-align: center;
  padding: clamp(3rem, 8vw, 4.5rem) 1.5rem;
  overflow: hidden;
}

.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.12), transparent 55%);
  pointer-events: none;
}

.cta-band .container {
  position: relative;
  z-index: 1;
}

.cta-band h2 {
  margin: 0 0 0.85rem;
  color: #fff;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.cta-band p {
  margin: 0 0 1.75rem;
  opacity: 0.92;
  font-size: 1.0625rem;
  max-width: 40rem;
  margin-inline: auto;
}

.cta-band .btn-primary {
  color: var(--color-primary-dark);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }

  .card:hover,
  .btn:hover {
    transform: none;
  }
}

@media (max-width: 1100px) and (min-width: 993px) {
  .main-nav a {
    font-size: 0.85rem;
    padding: 0.45rem 0.75rem;
  }
}

@media (max-width: 992px) {
  .header-inner {
    display: flex;
  }

  .header-actions {
    margin-left: auto;
    flex-shrink: 0;
    gap: 0.35rem;
  }

  .nav-toggle {
    display: flex;
    flex-shrink: 0;
  }

  .header-inner {
    flex-wrap: nowrap;
    gap: 0.5rem;
  }

  .logo-link {
    flex: 1 1 auto;
    min-width: 0;
    max-width: none;
  }

  .logo-text {
    flex-shrink: 0;
    overflow: visible;
    text-overflow: unset;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #ffffff;
    border-bottom: 1px solid var(--color-border);
    display: none;
    box-shadow: var(--shadow-lg);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    border-radius: 0 0 var(--radius) var(--radius);
  }

  .main-nav.is-open {
    display: block;
  }

  [data-theme="dark"] .main-nav {
    background: var(--color-bg-elevated);
  }

  .main-nav > ul {
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.75rem;
  }

  .main-nav li {
    border-bottom: none;
  }

  .main-nav a {
    display: block;
    padding: 0.85rem 1rem;
    font-size: 1rem;
    border-radius: var(--radius-sm);
    border-bottom: none;
    white-space: normal;
  }

  .main-nav a:hover,
  .main-nav a[aria-current="page"] {
    background: color-mix(in srgb, var(--color-primary) 10%, transparent);
    border-bottom: none;
  }
}

@media (max-width: 900px) {
  .about-intro,
  .values-grid,
  .contact-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .values-grid {
    grid-template-columns: 1fr;
  }

  .about-intro .values-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 3rem 0;
  }

  .hero {
    min-height: 380px;
  }

  .hero .container {
    padding-block: 2.75rem;
  }

  .hero h1 {
    max-width: none;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
    text-align: center;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .activity-list:not(.activity-list--home) {
    grid-template-columns: 1fr;
  }

  .page-hero {
    padding: 2rem 0;
  }

  .footer-grid {
    gap: 1.75rem;
  }
}

@media (max-width: 480px) {
  .container {
    width: min(100% - 1.5rem, var(--max-w));
  }

  .section-header {
    margin-bottom: 2rem;
  }

  .cta-band {
    padding: 2.5rem 1rem;
  }
}