/* ==========================================================================
   Ideal Ekspertiz - Sigorta Eksperliği | Kurumsal Site Styles
   BEM-benzeri sınıflar, CSS değişkenleri, erişilebilirlik
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=Instrument+Serif:ital@0;1&display=swap');

/* --------------------------------------------------------------------------
   CSS Değişkenleri - Tema (Açık / Koyu)
   -------------------------------------------------------------------------- */
:root {
  --color-bg: #f5f6f8;
  --color-bg-alt: #ffffff;
  --color-surface: #ffffff;
  --color-surface-elevated: #ffffff;
  --color-text: #1a1d24;
  --color-text-muted: #4a5568;
  --color-accent: #0a2540;
  --color-accent-hover: #0d3b66;
  --color-accent-light: #e8eef4;
  --color-accent-muted: #6b7c9a;
  --color-border: #e2e6eb;
  --color-shadow: rgba(10, 37, 64, 0.06);
  --color-shadow-strong: rgba(10, 37, 64, 0.12);
  --color-header-bg: rgba(255, 255, 255, 0.98);
  --color-footer-bg: #0a2540;
  --color-footer-text: #e8ecf1;
  --color-footer-muted: #9ca8b8;
  --color-focus-ring: #0a2540;
  --color-success: #0d7a4a;
  --color-error: #b91c1c;
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-card: 0 2px 12px var(--color-shadow);
  --shadow-card-hover: 0 8px 28px var(--color-shadow-strong);
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --section-label-color: var(--color-accent-muted);
}

[data-theme="dark"] {
  --color-bg: #0f1114;
  --color-bg-alt: #161a1f;
  --color-surface: #1a1f26;
  --color-surface-elevated: #222830;
  --color-text: #f0f2f5;
  --color-text-muted: #9ca3af;
  --color-accent: #5b9bd5;
  --color-accent-hover: #7ab0e0;
  --color-accent-light: #1e2a36;
  --color-accent-muted: #8ba4c4;
  --color-border: #2d353e;
  --color-shadow: rgba(0, 0, 0, 0.3);
  --color-shadow-strong: rgba(0, 0, 0, 0.5);
  --color-header-bg: rgba(15, 17, 20, 0.95);
  --color-footer-bg: #0a0c0e;
  --color-footer-text: #e4e4e7;
  --color-footer-muted: #6b7280;
  --color-focus-ring: #5b9bd5;
  --section-label-color: var(--color-accent-muted);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0.01s;
    --transition-normal: 0.01s;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* --------------------------------------------------------------------------
   Reset & Base
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--color-focus-ring); outline-offset: 2px; }
button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}

/* Scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--color-accent);
  z-index: 9999;
  transition: width 0.1s linear;
}

/* --------------------------------------------------------------------------
   Layout - Header (Sticky Nav)
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-header-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(10, 37, 64, 0.06);
}
.header__top {
  background: var(--color-accent);
  color: #fff;
  padding: var(--space-sm) var(--space-lg);
}
.header__top-inner {
  max-width: 1440px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-xl);
  font-size: 0.875rem;
}
.header__top a { color: rgba(255,255,255,0.95); }
.header__top a:hover { color: #fff; text-decoration: none; }
.header__top .btn--primary { background: #fff; color: var(--color-accent); padding: var(--space-xs) var(--space-md); font-size: 0.8125rem; }
.header__top .btn--primary:hover { background: #f0f2f5; color: var(--color-accent); text-decoration: none; }
@media (max-width: 768px) { .header__top { display: none; } }
.header__inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}
.header__logo {
  display: block;
  line-height: 0;
}
.header__logo:hover { text-decoration: none; }
.header__logo-img {
  display: block;
  height: 40px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  object-position: left center;
}
.header__nav { display: flex; align-items: center; gap: var(--space-xs); }
.header__link {
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.9375rem;
}
.header__link:hover { background: var(--color-accent-light); text-decoration: none; color: var(--color-accent); }
.header__link--active { background: var(--color-accent-light); color: var(--color-accent); }
.header__link:focus-visible { outline-offset: 4px; }

/* Dark mode toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.875rem;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.theme-toggle:hover { background: var(--color-accent-light); border-color: var(--color-accent); }
.theme-toggle:focus-visible { outline-offset: 2px; }
.theme-toggle__icon { width: 18px; height: 18px; }

/* Hamburger (mobil) */
.header__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  border: none;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  border-radius: var(--radius-sm);
}
.header__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
}
.header__hamburger[aria-expanded="true"] span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.header__hamburger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.header__hamburger[aria-expanded="true"] span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 768px) {
  .header__hamburger { display: flex; }
  .header__nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(300px, 85vw);
    height: 100vh;
    background: var(--color-surface);
    border-left: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-3xl) var(--space-lg) var(--space-lg);
    gap: 0;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    box-shadow: -8px 0 24px var(--color-shadow);
  }
  .header__nav.is-open { transform: translateX(0); }
  .header__nav .header__link { padding: var(--space-md); border-radius: var(--radius-md); }
  .header__nav .theme-toggle { margin-top: var(--space-md); }
}

/* --------------------------------------------------------------------------
   Main content
   -------------------------------------------------------------------------- */
.main { flex: 1; }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}
.container--narrow { max-width: 800px; }
.section {
  padding: var(--space-3xl) 0;
}
/* Sirius-style section label (eyebrow) above title */
.section__label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--section-label-color);
  margin-bottom: var(--space-sm);
  position: relative;
  padding-left: 0;
}
.section__label::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--color-accent);
  margin-right: var(--space-sm);
  vertical-align: middle;
}
.section__title {
  font-family: var(--font-serif);
  font-size: clamp(1.875rem, 4vw, 2.5rem);
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  line-height: 1.25;
}
.section__subtitle {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  max-width: 56ch;
  margin-bottom: var(--space-xl);
  line-height: 1.65;
}
.section--alt { background: var(--color-bg-alt); }
.section--dark {
  background: var(--color-accent);
  color: var(--color-footer-text);
}
.section--dark .section__label { color: rgba(255,255,255,0.75); }
.section--dark .section__label::before { background: #fff; }
.section--dark .section__title { color: #fff; }
.section--dark .section__subtitle { color: rgba(255,255,255,0.85); }

/* Hizmetlerimiz bölümü – pill linkler + CTA */
.hizmetler-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}
.hizmetler-pill {
  display: inline-block;
  padding: var(--space-sm) var(--space-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-accent);
  background: var(--color-accent-light);
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.hizmetler-pill:hover {
  background: var(--color-accent);
  color: #fff;
  text-decoration: none;
  border-color: var(--color-accent);
}
.hizmetler-cta-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
}
.hizmetler-cta-meta {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   About block "Biz Kimiz?" – iki sütun: sol görsel kartları, sağ metin + sekmeler
   -------------------------------------------------------------------------- */
.about-block {
  padding: var(--space-3xl) 0;
  background: var(--color-bg-alt);
}
.about-block__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: grid;
  grid-template-columns: 0.95fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}
@media (max-width: 900px) {
  .about-block__inner { grid-template-columns: 1fr; }
  .about-block__images { order: -1; max-width: 480px; margin: 0 auto; }
}
.about-block__images {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}
.about-block__image-card {
  border-radius: var(--radius-xl);
  box-shadow: 0 12px 40px var(--color-shadow), 0 0 0 1px var(--color-shadow);
  background-color: var(--color-accent-light);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  transition: transform 0.4s ease;
  overflow: hidden;
}
.about-block__image-card:hover {
  transform: scale(1.03);
}
@media (prefers-reduced-motion: reduce) {
  .about-block__image-card:hover { transform: none; }
}
.about-block__image-card--1 {
  aspect-ratio: 16 / 10;
  background-image: url('../../img/bg4.webp');
}
.about-block__image-card--2 {
  aspect-ratio: 4 / 5;
  max-height: 320px;
  background-image: url('../../img/bg3.png');
}
.about-block__pill {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  padding: var(--space-sm) var(--space-md);
  border-radius: 999px;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}
.about-block__title {
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-md);
  line-height: 1.25;
}
.about-block__intro {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: var(--space-lg);
}
.about-block__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-lg);
}
.about-block__tab {
  padding: var(--space-sm) 0;
  margin-right: var(--space-xl);
  background: none;
  border: none;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--color-text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.about-block__tab:hover { color: var(--color-text); }
.about-block__tab.is-active {
  color: var(--color-text);
  font-weight: 600;
  border-bottom-color: var(--color-accent);
}
.about-block__tab:focus-visible { outline-offset: 4px; outline: 2px solid var(--color-focus-ring); }
.about-block__panel {
  display: none;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}
.about-block__panel.is-active { display: block; }
.about-block__cta { margin-top: var(--space-xl); }
.about-block__cta .btn {
  text-transform: uppercase;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
}

/* --------------------------------------------------------------------------
   Hero (Sirius-style: full-width, strong headline)
   -------------------------------------------------------------------------- */
.hero {
  min-height: 75vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding: var(--space-3xl) 0;
  background: linear-gradient(135deg, rgba(10, 37, 64, 0.92) 0%, rgba(13, 59, 102, 0.88) 50%, rgba(10, 37, 64, 0.92) 100%),
    url('../../img/bg1.png') center / cover no-repeat;
  color: #fff;
  position: relative;
  overflow: hidden;
}
@media (min-width: 769px) {
  .hero { min-height: 75vh; min-height: 75dvh; }
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero__inner { text-align: center; }

/* Hero giriş animasyonu (prefers-reduced-motion'da devre dışı) */
.hero__animate {
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeUp 0.7s ease forwards;
}
.hero__badge.hero__animate { animation-delay: 0.1s; }
.hero__title.hero__animate { animation-delay: 0.2s; }
.hero__desc.hero__animate { animation-delay: 0.35s; }
.hero__cta.hero__animate { animation-delay: 0.5s; }
.hero__trust.hero__animate { animation-delay: 0.6s; }
.hero__stats { animation: heroFadeUp 0.7s ease 0.75s forwards; opacity: 0; transform: translateY(20px); }
@keyframes heroFadeUp {
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .hero__animate,
  .hero__stats { animation: none; opacity: 1; transform: none; }
}

.hero__badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.8);
  margin-bottom: var(--space-md);
}
.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 5.5vw, 3.75rem);
  font-weight: 400;
  line-height: 1.15;
  color: #fff;
  margin-bottom: var(--space-lg);
  max-width: 16ch;
  margin-left: auto;
  margin-right: auto;
  text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}
.hero__desc {
  font-size: 1.125rem;
  color: rgba(255,255,255,0.88);
  max-width: 48ch;
  margin: 0 auto var(--space-xl);
  line-height: 1.6;
}
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
}
.hero .btn--primary {
  background: #fff;
  color: var(--color-accent);
}
.hero .btn--primary:hover { background: #f0f2f5; color: var(--color-accent); }
.btn--hero-primary {
  font-size: 1.125rem !important;
  padding: var(--space-md) var(--space-2xl) !important;
}
.hero__trust {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.75);
  margin: var(--space-lg) auto 0;
  max-width: 42ch;
  line-height: 1.5;
}
.hero .btn--secondary {
  background: transparent;
  border-color: rgba(255,255,255,0.6);
  color: #fff;
}
.hero .btn--secondary:hover,
.hero .btn--secondary:focus {
  background: rgba(255,255,255,0.15);
  border-color: #fff;
  color: #fff;
  text-decoration: none;
}

/* Hero içi istatistikler (0'dan yükselen sayılar) */
.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  max-width: 720px;
  margin: var(--space-2xl) auto 0;
  padding-top: var(--space-2xl);
  border-top: 1px solid rgba(255,255,255,0.25);
  text-align: center;
}
@media (max-width: 640px) {
  .hero__stats { grid-template-columns: 1fr; gap: var(--space-lg); padding-top: var(--space-xl); }
}
.hero__stat-value {
  display: block;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
  color: #fff;
  margin-bottom: var(--space-xs);
}
.hero__stat-label {
  font-size: 0.9375rem;
  font-weight: 600;
  color: rgba(255,255,255,0.9);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}
.btn:focus-visible { outline-offset: 2px; }
.btn--primary {
  background: var(--color-accent);
  color: #fff;
}
.btn--primary:hover { background: var(--color-accent-hover); text-decoration: none; color: #fff; }
.btn--secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 2px solid var(--color-border);
}
.btn--secondary:hover { background: var(--color-accent-light); border-color: var(--color-accent); text-decoration: none; color: var(--color-text); }
/* Hero içindeki secondary buton: link olduğu için yazı rengi her zaman beyaz kalsın */
.hero__cta .btn--secondary,
.hero__cta .btn--secondary:hover,
.hero__cta .btn--secondary:focus,
.hero__cta .btn--secondary:visited { color: #fff !important; }

/* --------------------------------------------------------------------------
   Feature cards (Sirius-style: numbered 01, 02, 03, 04)
   -------------------------------------------------------------------------- */
.features { padding: var(--space-3xl) 0; background: var(--color-bg-alt); }
.features__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}
@media (max-width: 1024px) { .features__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .features__grid { grid-template-columns: 1fr; } }
.feature-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  transition: box-shadow 0.3s ease, border-color 0.3s ease, transform 0.3s ease;
}
.feature-card:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-accent);
  transform: translateY(-4px);
}
@media (prefers-reduced-motion: reduce) {
  .feature-card:hover { transform: none; }
}
.feature-card--highlight .feature-card__icon { background: var(--color-accent); color: #fff; }
.feature-card--highlight:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-accent);
  transform: translateY(-4px);
}
@media (prefers-reduced-motion: reduce) {
  .feature-card--highlight:hover { transform: none; }
}
.feature-card__num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-md);
  opacity: 0.9;
}
.feature-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-accent-light);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}
.feature-card__icon svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}
.feature-card__title { font-size: 1.125rem; font-weight: 600; margin-bottom: var(--space-sm); color: var(--color-text); }
.feature-card__text { font-size: 0.9375rem; color: var(--color-text-muted); line-height: 1.6; }

/* --------------------------------------------------------------------------
   Partnerler slider (sürekli kayan)
   -------------------------------------------------------------------------- */
.partners-slider-wrap {
  padding: var(--space-xl) 0;
  background: var(--color-bg-alt);
  overflow: hidden;
}
.partners-slider-wrap .section__title { margin-bottom: var(--space-sm); }
.partners-slider-wrap__desc {
  font-size: 1rem;
  color: var(--color-text-muted);
  max-width: 42ch;
  margin-bottom: var(--space-lg);
}
.partners-slider-wrap + .section { padding-top: var(--space-3xl); }
.partners-slider {
  overflow: hidden;
  margin-top: var(--space-lg);
}
.partners-slider__track {
  display: flex;
  width: max-content;
  animation: partners-marquee 30s linear infinite;
}
@media (prefers-reduced-motion: reduce) {
  .partners-slider__track { animation: none; }
}
@keyframes partners-marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.partners-slider__list {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
  flex-shrink: 0;
  padding: 0 var(--space-xl);
}
.partners-slider__item {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  white-space: nowrap;
  display: flex;
  align-items: center;
  min-height: 40px;
}
.partners-slider__logo {
  display: flex;
  align-items: center;
  min-height: 40px;
}
.partners-slider__logo img {
  display: block;
  height: 28px;
  width: auto;
  max-width: 120px;
  object-fit: contain;
}

/* --------------------------------------------------------------------------
   Process steps (numbered 01, 02, 03, 04)
   -------------------------------------------------------------------------- */
.process { background: var(--color-bg-alt); }
.process__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}
@media (max-width: 900px) { .process__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) {
  .process__grid {
    grid-template-columns: 1fr;
    gap: 0;
    margin-left: var(--space-md);
    padding-left: var(--space-xl);
    border-left: 2px solid var(--color-accent);
    margin-top: var(--space-xl);
  }
  .process-step {
    position: relative;
    text-align: left;
    padding-left: 0;
    padding-bottom: var(--space-2xl);
  }
  .process-step::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--space-xl) - 5px);
    top: 0.25rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-accent);
  }
  .process-step__num {
    font-size: 1.25rem;
    margin-bottom: var(--space-xs);
  }
}
.process-step {
  text-align: center;
  padding: var(--space-lg);
}
.process-step__num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-md);
}
.process-step__title { font-weight: 600; margin-bottom: var(--space-xs); font-size: 1.0625rem; }
.process-step__text { font-size: 0.9375rem; color: var(--color-text-muted); line-height: 1.55; margin-bottom: var(--space-sm); }
.process-step__link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
}
.process-step__link:hover { text-decoration: underline; }

/* --------------------------------------------------------------------------
   Accordion (SSS)
   -------------------------------------------------------------------------- */
.accordion { max-width: 700px; margin: 0 auto; }
.accordion__item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  overflow: hidden;
  background: var(--color-surface);
}
.accordion__trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  font-family: inherit;
}
.accordion__trigger:hover { background: var(--color-accent-light); }
.accordion__trigger:focus-visible { outline-offset: -2px; }
.accordion__trigger[aria-expanded="true"] .accordion__icon { transform: rotate(180deg); }
.accordion__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transform-origin: center center;
  transition: transform 0.25s ease;
  font-size: 0;
  color: inherit;
}
/* Metin okunu gizleyip CSS üçgeni kullan (dönüş düzgün olsun) */
.accordion__icon::before {
  content: '';
  display: block;
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid currentColor;
  margin-top: -2px;
}
.accordion__panel {
  padding: 0 var(--space-lg) var(--space-lg);
}
.accordion__panel[hidden] { display: none; }
.accordion-actions {
  margin-bottom: var(--space-md);
}
.accordion-actions .btn--sm {
  font-size: 0.875rem;
  padding: var(--space-xs) var(--space-md);
}
.accordion__content { color: var(--color-text-muted); font-size: 0.9375rem; line-height: 1.65; }

/* --------------------------------------------------------------------------
   Carousel (müşteri yorumları)
   -------------------------------------------------------------------------- */
.carousel-wrap {
  position: relative;
  max-width: 700px;
  margin: var(--space-xl) auto 0;
  overflow: hidden;
}
.carousel__track {
  display: flex;
  transition: transform var(--transition-normal);
}
.carousel__slide {
  flex: 0 0 100%;
  padding: var(--space-md);
}
.testimonial-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}
.testimonial-card__quote { font-size: 1rem; color: var(--color-text-muted); margin-bottom: var(--space-md); font-style: italic; }
.testimonial-card__author { font-weight: 600; }
.testimonial-card__role { font-size: 0.875rem; color: var(--color-text-muted); }
.carousel__nav {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}
.carousel__btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}
.carousel__btn:hover { background: var(--color-accent-light); }
.carousel__btn:focus-visible { outline-offset: 2px; }
.carousel__dots {
  display: flex;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}
.carousel__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: var(--color-border);
  cursor: pointer;
  padding: 0;
  transition: background var(--transition-fast);
}
.carousel__dot.is-active { background: var(--color-accent); }

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: var(--space-3xl) 0 var(--space-xl);
  margin-top: auto;
  border-top: 3px solid var(--color-accent-hover);
}
.footer__grid {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-2xl);
}
@media (max-width: 768px) { .footer__grid { grid-template-columns: 1fr; text-align: center; } }
.footer__brand { font-family: var(--font-serif); font-size: 1.5rem; margin-bottom: var(--space-md); }
.footer__brand a { color: inherit; }
.footer__brand a:hover { text-decoration: none; opacity: 0.9; }
.footer__text { font-size: 0.9375rem; color: var(--color-footer-muted); margin-bottom: var(--space-lg); }
.footer__title { font-size: 0.875rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: var(--space-md); color: var(--color-footer-text); }
.footer__links { list-style: none; }
.footer__links li { margin-bottom: var(--space-sm); }
.footer__links a { color: var(--color-footer-muted); }
.footer__links a:hover { color: var(--color-footer-text); text-decoration: none; }
.footer__contact p { margin-bottom: var(--space-sm); font-size: 0.9375rem; color: var(--color-footer-muted); }
.site-footer a { color: var(--color-footer-muted); }
.site-footer a:hover { color: var(--color-footer-text); text-decoration: none; }
.footer__bottom {
  max-width: 1440px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-lg) 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: var(--space-2xl);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.875rem;
  color: var(--color-footer-muted);
}
.footer__social { display: flex; gap: var(--space-md); margin-right: 5%; }
.footer__social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  color: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
}
.footer__social a:hover { background: rgba(255,255,255,0.2); text-decoration: none; }

/* --------------------------------------------------------------------------
   Page: Hizmetler - Grid, filter, modal
   -------------------------------------------------------------------------- */
.page-header {
  padding: var(--space-3xl) 0;
  background: linear-gradient(135deg, rgba(10, 37, 64, 0.88) 0%, rgba(13, 59, 102, 0.85) 100%),
    url('../../img/bg2.jpg') center / cover no-repeat;
  color: #fff;
  text-align: center;
}
.page-header__label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.8);
  margin-bottom: var(--space-sm);
}
.page-header__title { font-family: var(--font-serif); font-size: clamp(1.875rem, 4vw, 2.5rem); margin-bottom: var(--space-sm); color: #fff; }
.page-header__desc { color: rgba(255,255,255,0.88); max-width: 50ch; margin: 0 auto; font-size: 1rem; }

.filters-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  margin-bottom: var(--space-xl);
}
.filters-bar__input {
  flex: 1;
  min-width: 200px;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-family: inherit;
  background: var(--color-surface);
  color: var(--color-text);
}
.filters-bar__chips { display: flex; flex-wrap: wrap; gap: var(--space-sm); }
.chip {
  padding: var(--space-sm) var(--space-md);
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 0.875rem;
  font-family: inherit;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.chip:hover { background: var(--color-accent-light); }
.chip.is-active { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }

.branches-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}
.branch-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: box-shadow var(--transition-normal), transform var(--transition-normal);
  text-align: left;
}
.branch-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.branch-card:focus-visible { outline-offset: 2px; }
.branch-card__title { font-size: 1.125rem; font-weight: 600; margin-bottom: var(--space-sm); }
.branch-card__summary { font-size: 0.9375rem; color: var(--color-text-muted); }

/* Modal / Drawer */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}
.modal-overlay.is-open { opacity: 1; visibility: visible; }
.modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  max-width: 560px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 48px var(--color-shadow-strong);
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}
.modal-overlay.is-open .modal { transform: scale(1); }
.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}
.modal__title { font-size: 1.25rem; font-weight: 600; }
.modal__close {
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal__close:hover { background: var(--color-accent-light); }
.modal__close:focus-visible { outline-offset: 2px; }
.modal__body { padding: var(--space-lg); }
.modal__section { margin-bottom: var(--space-lg); }
.modal__section:last-child { margin-bottom: 0; }
.modal__label { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-muted); margin-bottom: var(--space-xs); }
.modal__text { font-size: 0.9375rem; color: var(--color-text); }

/* --------------------------------------------------------------------------
   Kurumsal - Timeline, team cards
   -------------------------------------------------------------------------- */
.timeline { position: relative; padding-left: var(--space-xl); }
.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}
.timeline__item {
  position: relative;
  padding-bottom: var(--space-xl);
}
.timeline__item::before {
  content: '';
  position: absolute;
  left: -24px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-accent);
}
.timeline__year { font-weight: 700; color: var(--color-accent); margin-bottom: var(--space-xs); }
.timeline__title { font-weight: 600; margin-bottom: var(--space-xs); }
.timeline__text { font-size: 0.9375rem; color: var(--color-text-muted); }

/* Ekip: 3 kişi, masaüstünde 3 sütun, kompakt kartlar */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  max-width: 780px;
  margin: 0 auto;
}
@media (max-width: 900px) {
  .team-grid { grid-template-columns: 1fr; max-width: 280px; margin-left: auto; margin-right: auto; }
}
.team-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  text-align: center;
  display: flex;
  flex-direction: column;
}
.team-card__avatar {
  width: 100%;
  height: 200px;
  background: var(--color-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--color-accent);
  flex-shrink: 0;
}
.team-card__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.team-card__name {
  font-weight: 600;
  font-size: 1rem;
  padding: var(--space-md) var(--space-md) 0;
  margin: 0;
}
.team-card__role {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: var(--space-xs) var(--space-md) 0;
  margin: 0;
}
.team-card__bio {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  padding: var(--space-sm) var(--space-md) var(--space-md);
  margin: 0;
  flex: 1;
}
.team-card__skills {
  list-style: none;
  padding: var(--space-sm) var(--space-md) var(--space-md);
  margin: 0;
  flex: 1;
  text-align: left;
}
.team-card__skills li {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  padding: var(--space-xs) 0;
  padding-left: 1.25rem;
  position: relative;
}
.team-card__skills li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-accent);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-lg);
}
.value-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
}
.value-card__title { font-weight: 600; margin-bottom: var(--space-sm); }
.value-card__text { font-size: 0.9375rem; color: var(--color-text-muted); }

/* --------------------------------------------------------------------------
   Blog - List, detail, filters
   -------------------------------------------------------------------------- */
.blog-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}
.blog-toolbar__search { flex: 1; min-width: 200px; padding: var(--space-md); border: 1px solid var(--color-border); border-radius: var(--radius-md); font-family: inherit; background: var(--color-surface); color: var(--color-text); }
.blog-list { display: grid; gap: var(--space-lg); }
.blog-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition-normal);
}
.blog-card:hover { box-shadow: var(--shadow-card-hover); }
@media (max-width: 600px) { .blog-card { grid-template-columns: 1fr; } }
.blog-card__thumb {
  aspect-ratio: 16/10;
  background: var(--color-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 2rem;
}
.blog-card__body { padding: var(--space-lg); }
.blog-card__meta { font-size: 0.8125rem; color: var(--color-text-muted); margin-bottom: var(--space-sm); }
.blog-card__title { font-size: 1.125rem; font-weight: 600; margin-bottom: var(--space-sm); }
.blog-card__title a { color: var(--color-text); }
.blog-card__title a:hover { color: var(--color-accent); text-decoration: none; }
.blog-card__tags { display: flex; flex-wrap: wrap; gap: var(--space-xs); margin-top: var(--space-sm); }
.blog-card__tag { font-size: 0.75rem; padding: 2px 8px; background: var(--color-accent-light); color: var(--color-accent); border-radius: 999px; }

.blog-detail { display: none; }
.blog-detail.is-visible { display: block; }
.blog-detail__back { margin-bottom: var(--space-lg); }
.blog-detail__meta { font-size: 0.875rem; color: var(--color-text-muted); margin-bottom: var(--space-md); }
.blog-detail__title { font-family: var(--font-serif); font-size: 1.75rem; margin-bottom: var(--space-md); }
.blog-detail__content { color: var(--color-text-muted); line-height: 1.75; }
.blog-detail__content p { margin-bottom: var(--space-md); }
.recommended { margin-top: var(--space-2xl); }
.recommended__title { font-size: 1.125rem; font-weight: 600; margin-bottom: var(--space-md); }
.recommended__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: var(--space-md); }

/* --------------------------------------------------------------------------
   İletişim - Form, map placeholder
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}
@media (max-width: 768px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-map-placeholder {
  aspect-ratio: 16/10;
  background: var(--color-accent-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 1rem;
  border: 1px dashed var(--color-border);
}
.contact-info__card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
  border: 1px solid var(--color-border);
}
.contact-info__card h2, .contact-info__card h3 { font-size: 1rem; font-weight: 600; margin-bottom: var(--space-sm); }
.contact-form .form-group { margin-bottom: var(--space-lg); }
.contact-form label { display: block; font-weight: 500; margin-bottom: var(--space-xs); }
.contact-form input, .contact-form select, .contact-form textarea {
  width: 100%;
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
  background: var(--color-surface);
  color: var(--color-text);
}
.contact-form textarea { min-height: 120px; resize: vertical; }
.contact-form .form-error { font-size: 0.875rem; color: var(--color-error); margin-top: var(--space-xs); }
.contact-form .form-group.has-error input,
.contact-form .form-group.has-error textarea,
.contact-form .form-group.has-error select { border-color: var(--color-error); }
.contact-form .form-group.checkbox-group { display: flex; align-items: flex-start; gap: var(--space-sm); }
.contact-form .form-group.checkbox-group input { width: auto; }

/* --------------------------------------------------------------------------
   KVKK page & Cookie banner
   -------------------------------------------------------------------------- */
.kvkk-content { max-width: 720px; margin: 0 auto; }
.kvkk-content h2 { font-size: 1.25rem; margin-top: var(--space-xl); margin-bottom: var(--space-md); }
.kvkk-content p, .kvkk-content li { margin-bottom: var(--space-md); color: var(--color-text-muted); }
.kvkk-content ul { padding-left: var(--space-xl); }

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg);
  z-index: 1500;
  box-shadow: 0 -8px 24px var(--color-shadow);
  transform: translateY(100%);
  transition: transform var(--transition-normal);
}
.cookie-banner.is-visible { transform: translateY(0); }
.cookie-banner__inner { max-width: 1200px; margin: 0 auto; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-md); }
.cookie-banner__text { font-size: 0.9375rem; color: var(--color-text-muted); flex: 1; min-width: 260px; }
.cookie-banner__actions { display: flex; gap: var(--space-sm); }

/* --------------------------------------------------------------------------
   Toast
   -------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  pointer-events: none;
}
.toast {
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card-hover);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 0.9375rem;
  pointer-events: auto;
  animation: toastIn 0.3s ease;
}
.toast--success { border-left: 4px solid var(--color-success); }
.toast--error { border-left: 4px solid var(--color-error); }
@keyframes toastIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) { .toast { animation: none; } }

/* --------------------------------------------------------------------------
   Back to top
   -------------------------------------------------------------------------- */
/* Sticky CTA (ana sayfa scroll'da görünür) */
.sticky-cta {
  position: fixed;
  bottom: var(--space-xl);
  left: var(--space-xl);
  z-index: 99;
  padding: var(--space-md) var(--space-xl);
  font-size: 0.9375rem;
  font-weight: 600;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-md);
  text-decoration: none;
  box-shadow: var(--shadow-card-hover);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background 0.2s ease;
}
.sticky-cta.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.sticky-cta:hover { background: var(--color-accent-hover); color: #fff; text-decoration: none; }
.sticky-cta:focus-visible { outline-offset: 2px; }
@media (max-width: 480px) {
  .sticky-cta { left: var(--space-md); bottom: var(--space-lg); padding: var(--space-sm) var(--space-lg); font-size: 0.875rem; }
}

.back-to-top {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-card-hover);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}
.back-to-top.is-visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--color-accent-hover); color: #fff; }
.back-to-top:focus-visible { outline-offset: 2px; }

/* Utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}