/* ============================================
   Samsun Eğitim Dünyası — Main Stylesheet
   ============================================ */

/* --- CSS Variables --- */
:root {
  --color-navy: #0f1c2e;
  --color-dark-navy: #081220;
  --color-red: #c62828;
  --color-red-light: #e53935;
  --color-accent: #c62828;
  --color-accent-dark: #8e0000;
  --color-accent-light: #e57373;
  --color-highlight: #475569;
  --color-highlight-soft: #e8edf3;
  
  
  
  --color-cream: #eef1f6;
  --color-white: #FFFFFF;
  --color-text: #1a2332;
  --color-muted: #5c6778;
  --color-border: #dde2ea;

  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Source Sans 3', 'Segoe UI', sans-serif;

  --header-height: 80px;
  --topbar-height: 40px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(14, 24, 36, 0.06);
  --shadow-md: 0 8px 24px rgba(14, 24, 36, 0.1);
  --shadow-lg: 0 16px 48px rgba(14, 24, 36, 0.14);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container: 1200px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + var(--topbar-height));
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-white);
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

ul { list-style: none; }

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* --- Utilities --- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 5rem 0;
}

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

.section--dark {
  background: linear-gradient(135deg, var(--color-dark-navy) 0%, var(--color-navy) 100%);
  color: var(--color-white);
}

.section__header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3rem;
}

.section__label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.375rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-navy);
  margin-bottom: 1rem;
}

.section--dark .section__title {
  color: var(--color-white);
}

.section__desc {
  font-size: 1.0625rem;
  color: var(--color-muted);
  line-height: 1.7;
}

.section--dark .section__desc {
  color: rgba(255, 255, 255, 0.75);
}

/* Reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(198, 40, 40, 0.25);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-white);
}

.btn--outline-dark {
  background: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.btn--outline-dark:hover {
  background: var(--color-navy);
  color: var(--color-white);
}

.btn--red {
  background: var(--color-red);
  color: var(--color-white);
  border-color: var(--color-red);
}

.btn--red:hover {
  background: #c62828;
  border-color: #c62828;
  transform: translateY(-2px);
}

.btn--whatsapp {
  background: #25D366;
  color: var(--color-white);
  border-color: #25D366;
}

.btn--whatsapp:hover {
  background: #1da851;
  border-color: #1da851;
  transform: translateY(-2px);
}

.btn--sm {
  padding: 0.625rem 1.125rem;
  font-size: 0.875rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ============================================
   TOP BAR
   ============================================ */
.top-bar {
  background: var(--color-dark-navy);
  color: var(--color-white);
  font-size: 0.8125rem;
  height: var(--topbar-height);
  display: flex;
  align-items: center;
}

.top-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.top-bar__left {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.top-bar__link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.9);
}

.top-bar__link:hover {
  color: var(--color-accent);
}

.top-bar__link i {
  color: var(--color-accent);
  font-size: 0.75rem;
}

.top-bar__social {
  display: flex;
  gap: 0.75rem;
}

.top-bar__social a {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  transition: all var(--transition);
}

.top-bar__social a:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

@media (max-width: 576px) {
  .top-bar__link--hide-sm { display: none; }
  .top-bar { font-size: 0.75rem; }
}

/* ============================================
   HEADER / NAVBAR
   ============================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-white);
  transition: all var(--transition);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
}

.header.scrolled .header__inner {
  padding: 0.75rem 0;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  transition: padding var(--transition);
}

.logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.125rem;
}

.logo__img {
  height: 56px;
  width: auto;
  object-fit: contain;
  display: block;
}

.header .logo__img {
  height: 52px;
}

.logo__name {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-navy);
  line-height: 1.2;
}

.logo__tag {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--color-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav {
  display: none;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav__link {
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-red);
  background: rgba(198, 40, 40, 0.08);
}

.header__actions {
  display: none;
  align-items: center;
  gap: 1rem;
}

.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-navy);
  border-radius: 2px;
  transition: all var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu overlay */
.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(14, 24, 36, 0.5);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}

.mobile-menu-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* Mobile menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  top: calc(var(--topbar-height) + var(--header-height));
  background: var(--color-white);
  z-index: 999;
  padding: 1.5rem;
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 2rem;
}

.mobile-menu__link {
  display: block;
  padding: 0.875rem 1rem;
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-navy);
  border-radius: var(--radius-sm);
  border-left: 3px solid transparent;
  transition: all var(--transition);
}

.mobile-menu__link:hover {
  background: var(--color-cream);
  border-left-color: var(--color-accent);
}

.mobile-menu__cta {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.mobile-menu__cta .btn {
  width: 100%;
}

@media (min-width: 1024px) {
  .nav { display: block; }
  .header__actions { display: flex; }
  .hamburger { display: none; }
  .mobile-menu { display: none; }
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--color-dark-navy) 0%, var(--color-navy) 55%, #1a3048 100%);
  color: var(--color-white);
  padding: 4rem 0 5rem;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 150%;
  background: radial-gradient(ellipse, rgba(15, 28, 46, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-dark), var(--color-accent));
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__badge-top {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(198, 40, 40, 0.08);
  border: 1px solid rgba(198, 40, 40, 0.25);
  color: var(--color-accent);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: 50px;
  margin-bottom: 1.25rem;
}

.hero__badge-top i {
  font-size: 0.75rem;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.hero__title span {
  color: var(--color-accent);
}

.hero__subtitle {
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
  margin-bottom: 1.75rem;
  max-width: 540px;
}

.hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.hero__tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.375rem 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50px;
  color: rgba(255, 255, 255, 0.9);
}

.hero__tag--highlight {
  background: rgba(198, 40, 40, 0.12);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.hero__cta {
  margin-bottom: 2rem;
}

.hero__visual {
  position: relative;
}

.hero__card-main {
  background: linear-gradient(145deg, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0.05) 100%);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 2rem;
  aspect-ratio: 4/3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  backdrop-filter: blur(8px);
}

.hero__card-main i {
  font-size: 4rem;
  color: var(--color-accent);
  margin-bottom: 1rem;
  opacity: 0.9;
}

.hero__card-main p {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
}

.hero__card-main span {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 0.5rem;
}

.hero__mini-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 1rem;
}

.hero__mini-card {
  background: var(--color-white);
  color: var(--color-navy);
  padding: 1rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition);
}

.hero__mini-card:hover {
  transform: translateY(-4px);
}

.hero__mini-card i {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(198, 40, 40, 0.12);
  color: var(--color-navy);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  flex-shrink: 0;
}

.hero__mini-card strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.3;
}

@media (min-width: 992px) {
  .hero { padding: 5rem 0 6rem; }
  .hero__grid {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }
  .hero__mini-cards {
    position: absolute;
    bottom: -1rem;
    right: -1rem;
    width: 280px;
    margin-top: 0;
  }
}

/* ============================================
   PROGRAMS
   ============================================ */
.programs__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.program-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-accent);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.program-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.program-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(22, 35, 49, 0.08);
  color: var(--color-navy);
  border-radius: var(--radius-sm);
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.program-card__grade {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  background: rgba(198, 40, 40, 0.08);
  display: inline-block;
  padding: 0.25rem 0.625rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

.program-card__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 0.75rem;
}

.program-card__desc {
  font-size: 0.9375rem;
  color: var(--color-muted);
  flex-grow: 1;
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

@media (min-width: 576px) {
  .programs__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 992px) {
  .programs__grid { grid-template-columns: repeat(3, 1fr); }
}

/* ============================================
   WHY US
   ============================================ */
.features__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.feature-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

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

.feature-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-navy), #243a52);
  color: var(--color-accent);
  border-radius: var(--radius-md);
  font-size: 1.375rem;
  margin-bottom: 1.25rem;
}

.feature-card__title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 0.75rem;
}

.feature-card__desc {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.65;
}

@media (min-width: 576px) {
  .features__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 992px) {
  .features__grid { grid-template-columns: repeat(3, 1fr); }
}

/* ============================================
   BURSLULUK
   ============================================ */
.scholarship {
  position: relative;
  overflow: hidden;
}

.scholarship::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(198, 40, 40, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.scholarship__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-red);
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.375rem 0.875rem;
  border-radius: 50px;
  margin-bottom: 1rem;
}

.scholarship__badge i {
  font-size: 0.6875rem;
}

.scholarship__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: center;
}

.scholarship__info-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.scholarship__info-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  transition: background var(--transition);
}

.scholarship__info-card:hover {
  background: rgba(255, 255, 255, 0.1);
}

.scholarship__info-card i {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.scholarship__info-card strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  margin-bottom: 0.25rem;
}

.scholarship__info-card span {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
}

@media (min-width: 768px) {
  .scholarship__info-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .scholarship__grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ============================================
   ACADEMIC TRACKING
   ============================================ */
.timeline {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.timeline__step {
  position: relative;
  display: flex;
  gap: 1.25rem;
  padding-bottom: 2rem;
}

.timeline__step:last-child {
  padding-bottom: 0;
}

.timeline__step::before {
  content: '';
  position: absolute;
  left: 23px;
  top: 48px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent), var(--color-border));
}

.timeline__step:last-child::before {
  display: none;
}

.timeline__number {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-navy);
  color: var(--color-accent);
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  border-radius: 50%;
  border: 3px solid var(--color-accent);
  position: relative;
  z-index: 1;
}

.timeline__content {
  flex: 1;
  padding-top: 0.25rem;
}

.timeline__title {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 0.5rem;
}

.timeline__desc {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.6;
}

@media (min-width: 992px) {
  .timeline {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

  .timeline__step {
    flex-direction: column;
    text-align: center;
    padding-bottom: 0;
  }

  .timeline__step::before {
    left: 50%;
    top: 24px;
    bottom: auto;
    width: 100%;
    height: 2px;
    transform: translateX(24px);
    background: linear-gradient(90deg, var(--color-accent), var(--color-border));
  }

  .timeline__step:last-child::before {
    display: none;
  }

  .timeline__number {
    margin: 0 auto;
  }
}

@media (min-width: 1200px) {
  .timeline {
    grid-template-columns: repeat(6, 1fr);
  }
}

/* ============================================
   STATS
   ============================================ */
.stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.stat-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: all var(--transition);
}

.stat-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.stat-card i {
  font-size: 1.75rem;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.stat-card strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-navy);
  line-height: 1.35;
}

.stats__note {
  text-align: center;
  margin-top: 2.5rem;
  padding: 1.5rem 2rem;
  background: var(--color-cream);
  border-radius: var(--radius-md);
  font-size: 1rem;
  color: var(--color-muted);
  font-style: italic;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .stats__grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 992px) {
  .stats__grid { grid-template-columns: repeat(6, 1fr); }
}

/* ============================================
   ABOUT
   ============================================ */
.about__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

.about__text p {
  font-size: 1.0625rem;
  color: var(--color-muted);
  line-height: 1.75;
  margin-bottom: 2rem;
}

.about__boxes {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.about__box {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--color-cream);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-navy);
}

.about__box i {
  color: var(--color-accent);
  font-size: 1.125rem;
}

.about__visual {
  position: relative;
}

.about__img-placeholder {
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--color-navy), #243a52);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.7);
  overflow: hidden;
}

.about__img-placeholder i {
  font-size: 4rem;
  color: var(--color-accent);
  margin-bottom: 1rem;
  opacity: 0.8;
}

.about__img-placeholder span {
  font-size: 0.875rem;
}

@media (min-width: 992px) {
  .about__grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ============================================
   GALLERY
   ============================================ */
.gallery__filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.gallery__filter {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-muted);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 50px;
  cursor: pointer;
  transition: all var(--transition);
}

.gallery__filter:hover,
.gallery__filter.active {
  background: var(--color-navy);
  color: var(--color-white);
  border-color: var(--color-navy);
}

.gallery__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.gallery__item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition);
}

.gallery__item:hover {
  transform: scale(1.02);
}

.gallery__item.hidden {
  display: none;
}

.gallery__placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: linear-gradient(135deg, #e8ecf0 0%, #d1d9e0 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-muted);
  font-size: 0.8125rem;
  text-align: center;
  padding: 1rem;
}

.gallery__placeholder i {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--color-navy);
  opacity: 0.4;
}

@media (min-width: 768px) {
  .gallery__grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 992px) {
  .gallery__grid { grid-template-columns: repeat(4, 1fr); }
}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonials__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.testimonial-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

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

.testimonial-card__stars {
  color: var(--color-accent);
  font-size: 0.875rem;
  margin-bottom: 1rem;
  letter-spacing: 2px;
}

.testimonial-card__text {
  font-size: 1rem;
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: 1.25rem;
  font-style: italic;
}

.testimonial-card__author {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-navy);
}

@media (min-width: 768px) {
  .testimonials__grid { grid-template-columns: repeat(3, 1fr); }
}

/* ============================================
   REGISTRATION FORM
   ============================================ */
.register__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: start;
}

.form-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.form-card__title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 0.5rem;
}

.form-card__subtitle {
  font-size: 0.9375rem;
  color: var(--color-muted);
  margin-bottom: 2rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(198, 40, 40, 0.15);
}

.form-group textarea {
  min-height: 100px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.form-success {
  display: none;
  text-align: center;
  padding: 3rem 2rem;
}

.form-success.visible {
  display: block;
}

.form-success i {
  font-size: 3.5rem;
  color: #22c55e;
  margin-bottom: 1rem;
}

.form-success h3 {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  color: var(--color-navy);
  margin-bottom: 0.75rem;
}

.form-success p {
  color: var(--color-muted);
}

.register__trust {
  background: linear-gradient(135deg, var(--color-navy), var(--color-dark-navy));
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}

.register__trust h3 {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.register__trust-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.register__trust-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-accent);
}

.register__trust-item i {
  color: var(--color-accent);
  font-size: 1.25rem;
}

.register__trust-item span {
  font-weight: 500;
}

@media (min-width: 576px) {
  .form-row { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 992px) {
  .register__grid {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

/* ============================================
   NEWS
   ============================================ */
.news__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.news-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: all var(--transition);
}

.news-card:hover {
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.news-card__date {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  background: rgba(198, 40, 40, 0.08);
  padding: 0.25rem 0.625rem;
  border-radius: 4px;
  margin-bottom: 0.75rem;
}

.news-card__title {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.news-card__desc {
  font-size: 0.9375rem;
  color: var(--color-muted);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.news-card__link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-navy);
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.news-card__link:hover {
  color: var(--color-accent);
}

@media (min-width: 768px) {
  .news__grid { grid-template-columns: repeat(3, 1fr); }
}

/* ============================================
   FINAL CTA
   ============================================ */
.final-cta {
  position: relative;
  overflow: hidden;
}

.final-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(30deg, rgba(15, 28, 46, 0.04) 12%, transparent 12.5%, transparent 87%, rgba(15, 28, 46, 0.04) 87.5%, rgba(15, 28, 46, 0.04)),
    linear-gradient(150deg, rgba(15, 28, 46, 0.04) 12%, transparent 12.5%, transparent 87%, rgba(15, 28, 46, 0.04) 87.5%, rgba(15, 28, 46, 0.04));
  background-size: 80px 140px;
  pointer-events: none;
}

.final-cta__inner {
  position: relative;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.final-cta .btn-group {
  justify-content: center;
  margin-top: 2rem;
}

/* ============================================
   CONTACT
   ============================================ */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact__item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact__item i {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(198, 40, 40, 0.08);
  color: var(--color-navy);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.contact__item strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  color: var(--color-navy);
  margin-bottom: 0.25rem;
}

.contact__item a,
.contact__item span {
  font-size: 0.9375rem;
  color: var(--color-muted);
}

.contact__item a:hover {
  color: var(--color-accent);
}

.contact__map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 320px;
  background: var(--color-cream);
  border: 1px solid var(--color-border);
}

.contact__map-placeholder {
  width: 100%;
  height: 100%;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-muted);
  text-align: center;
  padding: 2rem;
}

.contact__map-placeholder i {
  font-size: 3rem;
  color: var(--color-navy);
  opacity: 0.3;
  margin-bottom: 1rem;
}

@media (min-width: 992px) {
  .contact__grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-dark-navy);
  color: rgba(255, 255, 255, 0.8);
  padding: 4rem 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__brand .logo__name {
  color: var(--color-white);
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.footer__brand p {
  font-size: 0.9375rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer__title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 1.25rem;
}

.footer__links li {
  margin-bottom: 0.625rem;
}

.footer__links a {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--color-accent);
}

.footer__social {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

.footer__social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  color: var(--color-white);
  transition: all var(--transition);
}

.footer__social a:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

.footer__bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer__legal {
  display: flex;
  gap: 1.5rem;
}

.footer__legal a:hover {
  color: var(--color-accent);
}

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* ============================================
   MOBILE STICKY BAR
   ============================================ */
.mobile-sticky {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 998;
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -4px 20px rgba(14, 24, 36, 0.1);
  padding: 0.5rem;
}

.mobile-sticky__inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.25rem;
}

.mobile-sticky__btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 0.25rem;
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--color-navy);
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.mobile-sticky__btn i {
  font-size: 1.125rem;
}

.mobile-sticky__btn--call i { color: var(--color-navy); }
.mobile-sticky__btn--wa i { color: #25D366; }
.mobile-sticky__btn--register i { color: var(--color-accent); }
.mobile-sticky__btn--scholarship i { color: var(--color-red); }

.mobile-sticky__btn:hover,
.mobile-sticky__btn:active {
  background: var(--color-cream);
}

@media (max-width: 1023px) {
  .mobile-sticky { display: block; }
  body { padding-bottom: 72px; }
}

/* ============================================
   SCROLL TO TOP
   ============================================ */
.scroll-top {
  position: fixed;
  bottom: 5.5rem;
  right: 1.25rem;
  width: 44px;
  height: 44px;
  background: var(--color-navy);
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 997;
  box-shadow: var(--shadow-md);
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

@media (min-width: 1024px) {
  .scroll-top { bottom: 2rem; }
}

/* --- Focus & accessibility --- */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn:focus-visible,
.gallery__filter:focus-visible {
  outline-offset: 3px;
}

/* ============================================
   BRAND & CORPORATE UPDATES
   ============================================ */
.top-bar {
  background: var(--color-dark-navy);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 4px 24px rgba(8, 18, 32, 0.08);
}

.section__label {
  color: var(--color-red);
  letter-spacing: 0.16em;
}

.hero__title span {
  color: #ff8a80;
}

.hero__badge-top {
  background: rgba(198, 40, 40, 0.15);
  border-color: rgba(198, 40, 40, 0.35);
  color: #ffb4b4;
}

.hero::after {
  background: linear-gradient(90deg, var(--color-red), var(--color-highlight), var(--color-red));
}

.hero__brand-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-bottom: 1rem;
}

.hero__brand-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.hero__brand-overlay {
  position: absolute;
  inset: auto 0 0 0;
  padding: 1.25rem;
  background: linear-gradient(180deg, transparent, rgba(8, 18, 32, 0.92));
  color: var(--color-white);
}

.hero__brand-badge {
  display: inline-block;
  background: var(--color-red);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  margin-bottom: 0.5rem;
}

.hero__brand-overlay p {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.hero__brand-overlay span {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.8);
}

.about__img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.gallery__item img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius-md);
  transition: transform var(--transition);
}

.gallery__item:hover img {
  transform: scale(1.03);
}

.gallery__item {
  overflow: hidden;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.footer__logo {
  height: 64px;
  width: auto;
  margin-bottom: 1rem;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-red), #a61c1c);
  border-color: var(--color-red);
}

.btn--primary:hover {
  background: linear-gradient(135deg, #a61c1c, var(--color-red));
}

.section--dark {
  background: linear-gradient(135deg, var(--color-dark-navy), var(--color-navy));
}

.program-card,
.feature-card,
.testimonial-card,
.news-card {
  border: 1px solid var(--color-border);
}

.program-card__icon,
.feature-card__icon {
  color: var(--color-red);
}

.contact__map iframe {
  min-height: 320px;
  width: 100%;
}

@media (min-width: 1024px) {
  .hero__brand-img {
    height: 260px;
  }
}

/* ============================================
   CORPORATE HUB — Dinamik & interaktif bölüm
   ============================================ */
.corp-hub {
  position: relative;
  background: linear-gradient(180deg, var(--color-cream) 0%, var(--color-white) 50%);
  overflow: hidden;
}

.corp-hub::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 100% 0%, rgba(198, 40, 40, 0.05), transparent),
    radial-gradient(ellipse 60% 40% at 0% 100%, rgba(15, 28, 46, 0.04), transparent);
  pointer-events: none;
}

.corp-hub__root {
  position: relative;
  z-index: 1;
}

[data-stagger] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

[data-stagger].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-stagger].is-visible .corp-value,
[data-stagger].is-visible .corp-digital,
[data-stagger].is-visible .corp-explore-item {
  animation: corpFadeUp 0.5s ease backwards;
}

[data-stagger].is-visible .corp-value:nth-child(1) { animation-delay: 0.05s; }
[data-stagger].is-visible .corp-value:nth-child(2) { animation-delay: 0.12s; }
[data-stagger].is-visible .corp-value:nth-child(3) { animation-delay: 0.19s; }
[data-stagger].is-visible .corp-value:nth-child(4) { animation-delay: 0.26s; }

@keyframes corpFadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  [data-stagger] { opacity: 1; transform: none; transition: none; }
  [data-stagger] .corp-value,
  [data-stagger] .corp-digital { animation: none; }
}

/* Hero */
.corp-hub__hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  margin-bottom: 2.5rem;
}

.corp-hub__intro {
  background: linear-gradient(145deg, var(--color-dark-navy), var(--color-navy));
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.corp-hub__intro::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-accent), #ff8a80);
}

.corp-hub__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #ff8a80;
  margin-bottom: 1rem;
}

.corp-hub__title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3.5vw, 2.125rem);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.corp-hub__lead {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 1.5rem;
}

.corp-hub__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  list-style: none;
  margin-bottom: 1.5rem;
  padding: 0;
}

.corp-stat {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 0.875rem 1rem;
  transition: background var(--transition), transform var(--transition);
}

.corp-stat:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

.corp-stat__num {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 3vw, 1.625rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.corp-stat__label {
  font-size: 0.6875rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.35;
}

.corp-hub__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Slider */
.corp-slider {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.corp-slider__viewport {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--color-navy);
}

.corp-slider__track {
  display: flex;
  height: 100%;
  transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
}

.corp-slider__slide {
  flex: 0 0 100%;
  margin: 0;
  height: 100%;
}

.corp-slider__slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.corp-slider__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  color: var(--color-navy);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: background var(--transition), color var(--transition), transform var(--transition);
  z-index: 2;
}

.corp-slider__nav:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

.corp-slider__nav--prev { left: 0.75rem; }
.corp-slider__nav--next { right: 0.75rem; }

.corp-slider__footer {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--color-border);
}

.corp-slider__caption strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--color-navy);
  margin-bottom: 0.25rem;
}

.corp-slider__caption span {
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.corp-slider__dots {
  display: flex;
  gap: 0.5rem;
}

.corp-slider__dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--color-border);
  cursor: pointer;
  transition: width var(--transition), background var(--transition);
}

.corp-slider__dot.is-active {
  width: 24px;
  border-radius: 4px;
  background: var(--color-accent);
}

/* Tabs */
.corp-hub__interactive {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 1.25rem;
  margin-bottom: 2.5rem;
}

.corp-tabs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  margin-bottom: 1.25rem;
  padding-bottom: 0.25rem;
}

.corp-tabs::-webkit-scrollbar { display: none; }

.corp-tabs__btn {
  flex: 1 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.625rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-white);
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.corp-tabs__btn i { font-size: 0.875rem; }

.corp-tabs__btn.is-active {
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.corp-tabs__btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.corp-panel {
  display: none;
  animation: corpPanelIn 0.35s ease;
}

.corp-panel.is-active {
  display: block;
}

@keyframes corpPanelIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Values */
.corp-values {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.875rem;
}

.corp-value {
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.corp-value:hover,
.corp-value.is-active {
  border-color: rgba(198, 40, 40, 0.35);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.corp-value.is-active {
  background: linear-gradient(135deg, rgba(198, 40, 40, 0.04), rgba(15, 28, 46, 0.03));
}

.corp-value__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-navy), #243a52);
  color: var(--color-accent);
  font-size: 1.125rem;
  margin-bottom: 0.875rem;
}

.corp-value h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--color-navy);
  margin-bottom: 0.375rem;
}

.corp-value p {
  font-size: 0.8125rem;
  color: var(--color-muted);
  line-height: 1.55;
  margin: 0;
}

/* Process */
.corp-process {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.corp-process__steps {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.corp-step {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  width: 100%;
  text-align: left;
  padding: 0.875rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-body);
}

.corp-step:hover,
.corp-step.is-active {
  border-color: var(--color-accent);
  background: rgba(198, 40, 40, 0.04);
}

.corp-step__num {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
  min-width: 1.75rem;
}

.corp-step__label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-navy);
}

.corp-process-detail {
  padding: 1.5rem;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-dark-navy), var(--color-navy));
  color: var(--color-white);
  min-height: 160px;
}

.corp-process-detail__icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.1);
  color: #ff8a80;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.corp-process-detail h4 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  margin-bottom: 0.625rem;
}

.corp-process-detail p {
  font-size: 0.875rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.8);
  margin: 0;
}

/* Digital */
.corp-digital-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.corp-digital {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem 1.125rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.corp-digital:hover {
  border-color: rgba(198, 40, 40, 0.25);
  box-shadow: var(--shadow-sm);
}

.corp-digital__icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(198, 40, 40, 0.1);
  color: var(--color-accent);
}

.corp-digital h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 0.25rem;
}

.corp-digital p {
  font-size: 0.8125rem;
  color: var(--color-muted);
  line-height: 1.5;
  margin: 0;
}

/* Explore */
.corp-hub__explore-head {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 1.75rem;
}

.corp-hub__explore-head h3 {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 3vw, 1.625rem);
  color: var(--color-navy);
  margin-bottom: 0.5rem;
}

.corp-hub__explore-head p {
  font-size: 0.875rem;
  color: var(--color-muted);
}

.corp-explore {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  align-items: stretch;
}

.corp-explore__list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.corp-explore-item {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  padding: 0.875rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  background: var(--color-white);
  transition: all var(--transition);
}

.corp-explore-item:hover,
.corp-explore-item.is-active {
  border-color: rgba(198, 40, 40, 0.35);
  background: rgba(198, 40, 40, 0.03);
  transform: translateX(4px);
}

.corp-explore-item__icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(15, 28, 46, 0.06);
  color: var(--color-navy);
  transition: background var(--transition), color var(--transition);
}

.corp-explore-item.is-active .corp-explore-item__icon,
.corp-explore-item:hover .corp-explore-item__icon {
  background: var(--color-accent);
  color: var(--color-white);
}

.corp-explore-item__text {
  flex: 1;
  min-width: 0;
}

.corp-explore-item__text strong {
  display: block;
  font-size: 0.9375rem;
  color: var(--color-navy);
}

.corp-explore-item__text span {
  font-size: 0.75rem;
  color: var(--color-muted);
}

.corp-explore-item__chev {
  color: var(--color-muted);
  font-size: 0.75rem;
}

.corp-explore-preview {
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, var(--color-dark-navy), var(--color-navy));
  color: var(--color-white);
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 220px;
}

.corp-explore-preview__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.1);
  color: #ff8a80;
  font-size: 1.375rem;
  margin-bottom: 1.25rem;
}

.corp-explore-preview h4 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  margin-bottom: 0.625rem;
}

.corp-explore-preview p {
  font-size: 0.875rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 1.25rem;
}

/* Mobil yatay kaydırma gezgini */
.corp-explore-scroll {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x mandatory;
  padding: 0.25rem 0 1rem;
  scrollbar-width: none;
}

.corp-explore-scroll::-webkit-scrollbar { display: none; }

.corp-explore-scroll .corp-explore-item {
  flex: 0 0 min(85vw, 280px);
  scroll-snap-align: start;
  flex-direction: column;
  align-items: flex-start;
  min-height: 140px;
}

.corp-explore-scroll .corp-explore-item__chev {
  align-self: flex-end;
  margin-top: auto;
}

@media (min-width: 640px) {
  .corp-values {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .corp-digital-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 992px) {
  .corp-hub__hero {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
  }

  .corp-hub__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .corp-hub__interactive {
    padding: 1.75rem;
  }

  .corp-values {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .corp-process {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
  }

  .corp-digital-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .corp-explore {
    display: grid;
  }

  .corp-explore-scroll {
    display: none;
  }
}

@media (max-width: 991px) {
  .corp-explore-preview {
    display: none;
  }
}