/* Layout */

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(30, 58, 138, 0.9) 100%);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(59, 130, 246, 0.2);
  transition: all var(--transition-base);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(255, 255, 255, 0.05) inset;
}

.header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(59, 130, 246, 0.1) 50%, transparent 100%);
  opacity: 0.5;
  pointer-events: none;
}

.header.scrolled {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.98) 100%);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.02) inset;
}

.header.scrolled::before {
  background: linear-gradient(90deg, transparent 0%, rgba(59, 130, 246, 0.05) 50%, transparent 100%);
}

.header.scrolled .logo {
  color: var(--color-primary);
  text-shadow: none;
}

.header.scrolled .logo span:first-child {
  color: var(--color-primary);
  text-shadow: none;
}

.header.scrolled .logo-image {
  filter: none !important;
  height: 80px;
  width: auto;
  max-width: 400px;
  object-fit: contain;
  transform: none !important;
  transition: none !important;
}

.header.scrolled .nav-link {
  color: var(--color-text);
  text-shadow: none;
}

.header.scrolled .nav-link:hover {
  color: var(--color-accent);
}

.header-content {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-lg);
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  gap: var(--spacing-md);
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: white;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0;
  justify-self: start;
}

.logo-first,
.logo-last {
  display: inline-block;
  transition: all var(--transition-base);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
}

.logo-image + .logo-first {
  margin-left: var(--spacing-sm);
}

.logo-first {
  color: white;
}

.logo-last {
  color: rgba(96, 165, 250, 0.9);
  text-shadow: 0 0 20px rgba(96, 165, 250, 0.5);
}

.logo-image {
  height: 80px;
  width: auto;
  max-width: 400px;
  object-fit: contain;
  display: block;
  filter: none !important;
  transform: none !important;
  transition: none !important;
}


.header.scrolled .logo-first {
  color: var(--color-primary);
  text-shadow: none;
}

.header.scrolled .logo-last {
  color: var(--color-secondary);
  text-shadow: none;
}

.nav {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  justify-self: center;
  grid-column: 2;
  flex-wrap: nowrap;
}

/* Desktop'ta hamburger menü içindeki header ve social'ı gizle, ama nav-links'i göster */
.nav-header,
.nav-social {
  display: none;
}

/* Desktop'ta nav-links içindeki linkleri göster */
.nav-links {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-link {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: rgba(255, 255, 255, 0.95);
  transition: all var(--transition-base);
  position: relative;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.5), 0 0 15px rgba(0, 0, 0, 0.3);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  white-space: nowrap;
}

.nav-link svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}

.nav-link span {
  white-space: nowrap;
}

.nav-link::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(30, 64, 175, 0.2));
  border-radius: var(--radius-md);
  opacity: 0;
  transition: opacity var(--transition-base);
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-light), var(--color-secondary));
  transition: width var(--transition-base);
  border-radius: var(--radius-full);
}

.nav-link:hover::before {
  opacity: 1;
}

.nav-link:hover::after {
  width: 80%;
}

.nav-link:hover {
  color: white;
  transform: translateY(-1px);
}

.header.scrolled .nav-link {
  color: var(--color-text);
  text-shadow: none;
}

.header.scrolled .nav-link::before {
  background: rgba(59, 130, 246, 0.1);
}

.header.scrolled .nav-link::after {
  background: var(--gradient-accent);
}

.header.scrolled .nav-link:hover {
  color: var(--color-accent);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  justify-self: end;
  grid-column: 3;
  width: 44px;
  height: 44px;
  position: relative;
  z-index: 1001;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.8), rgba(30, 58, 138, 0.8));
  border: 1px solid rgba(59, 130, 246, 0.3);
  margin-left: auto;
  margin-right: 0;
}

.menu-toggle:hover {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(30, 58, 138, 0.95));
  transform: scale(1.05);
  border-color: rgba(59, 130, 246, 0.5);
}

.menu-toggle span {
  width: 26px;
  height: 3px;
  background: white !important;
  transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55), opacity 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55), box-shadow 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  border-radius: var(--radius-full);
  display: block;
  position: relative;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.menu-toggle:not(.active) span {
  background: white !important;
}

.menu-toggle:not(.active):hover span {
  background: white !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.menu-toggle.active span {
  background: white !important;
}

.menu-toggle.active:hover span {
  background: white !important;
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
  width: 26px;
  background: white !important;
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: translateX(-15px);
  background: white !important;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
  width: 26px;
  background: white !important;
}

.header.scrolled .menu-toggle {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.6), rgba(30, 58, 138, 0.6));
  border-color: rgba(59, 130, 246, 0.2);
}

.header.scrolled .menu-toggle:hover {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.8), rgba(30, 58, 138, 0.8));
  border-color: rgba(59, 130, 246, 0.4);
}

.header.scrolled .menu-toggle:not(.active) span {
  background: white !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.header.scrolled .menu-toggle:not(.active):hover span {
  background: white !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.header.scrolled .menu-toggle.active span {
  background: white !important;
}

.header.scrolled .menu-toggle.active:hover span {
  background: white !important;
}

/* Footer */
.footer {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1e293b 100%);
  color: white;
  padding: var(--spacing-xl) 0;
  margin-top: auto;
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: calc(-1 * var(--spacing-lg));
  left: 0;
  right: 0;
  height: var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-primary) 0%, #1e293b 100%);
  pointer-events: none;
  z-index: 1;
}

.footer::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 30%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(30, 64, 175, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr));
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 1;
}

.footer-content-single {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--spacing-xl);
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.footer-brand {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--spacing-sm);
}

.footer-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: white;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  white-space: nowrap;
}

.footer-title-first,
.footer-title-last {
  display: inline-block;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  white-space: nowrap;
}

.footer-title-first {
  color: white;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.footer-title-last {
  color: rgba(96, 165, 250, 0.9);
  text-shadow: 0 0 20px rgba(96, 165, 250, 0.5), 0 2px 8px rgba(0, 0, 0, 0.3);
}

.footer-logo-image {
  height: 80px;
  width: auto;
  max-width: 400px;
  object-fit: contain;
  display: block;
}

.footer-links-inline {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.footer-links-inline a {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: all var(--transition-base);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
}

.footer-links-inline a:hover {
  color: white;
  background: rgba(255, 255, 255, 0.1);
}

.footer-separator {
  color: rgba(255, 255, 255, 0.4);
  font-size: var(--font-size-sm);
  margin: 0 var(--spacing-xs);
}

.footer-social-inline {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-sm);
}

.social-link-inline {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  color: white;
  transition: all var(--transition-base);
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-decoration: none;
}

.social-link-inline:hover {
  background: rgba(59, 130, 246, 0.2);
  border-color: rgba(59, 130, 246, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.social-link-inline svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-base);
}

.social-link-inline:hover svg {
  transform: scale(1.1);
}

.footer-section h4 {
  color: white;
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  position: relative;
  padding-bottom: var(--spacing-md);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.footer-section h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

.footer-description {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}

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

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-sm);
  text-decoration: none;
  transition: all var(--transition-base);
  display: inline-block;
  position: relative;
  padding-left: var(--spacing-md);
}

.footer-links a::before {
  content: '→';
  position: absolute;
  left: 0;
  opacity: 0;
  transform: translateX(-10px);
  transition: all var(--transition-base);
  color: var(--color-accent-light);
}

.footer-links a:hover {
  color: white;
  padding-left: var(--spacing-lg);
  transform: translateX(4px);
}

.footer-links a:hover::before {
  opacity: 1;
  transform: translateX(0);
}

.footer-social {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-top: var(--spacing-md);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  color: white;
  transition: all var(--transition-base);
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-decoration: none;
}

.social-link:hover {
  background: rgba(59, 130, 246, 0.2);
  border-color: rgba(59, 130, 246, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.social-link svg {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-base);
}

.social-link:hover svg {
  transform: scale(1.1);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  max-width: 1400px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 1;
}

.footer-bottom::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.5), transparent);
}

/* Responsive */
@media (max-width: 768px) {
  .header {
    padding: 0;
  }

  .header-content {
    padding: var(--spacing-xs) var(--spacing-sm);
    padding-right: var(--spacing-xs);
  }

  .logo-image {
    height: 60px;
    max-width: 300px;
    filter: none !important;
    transform: none !important;
    transition: none !important;
  }

  .header.scrolled .logo-image {
    height: 60px;
    max-width: 300px;
    width: auto;
    object-fit: contain;
    filter: none !important;
    transform: none !important;
    transition: none !important;
  }

  .logo {
    font-size: var(--font-size-lg);
  }

  .menu-toggle {
    display: flex;
    margin-left: auto;
    margin-right: var(--spacing-xs);
    margin-top: 0;
    width: 40px;
    height: 40px;
  }

  /* Menu Overlay */
  .nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    pointer-events: none;
  }

  .nav-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
  }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 80%;
    max-width: 360px;
    height: 100vh;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.98) 0%, rgba(30, 58, 138, 0.98) 100%);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    flex-direction: column;
    padding: 0;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.3);
    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    justify-content: space-between;
    align-items: stretch;
    overflow-y: auto;
    overflow-x: hidden;
    gap: 0;
  }

  /* Desktop'ta nav içindeki yeni elementleri gizle */
  .nav-header,
  .nav-links,
  .nav-social {
    display: none;
  }

  .nav::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
      radial-gradient(circle at top right, rgba(59, 130, 246, 0.2) 0%, transparent 50%),
      radial-gradient(circle at bottom left, rgba(30, 64, 175, 0.15) 0%, transparent 50%),
      linear-gradient(180deg, transparent 0%, rgba(59, 130, 246, 0.05) 100%);
    pointer-events: none;
  }

  .nav::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.3), transparent);
    pointer-events: none;
  }

  .nav.active {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }

  /* Mobilde normal nav-link'leri gizle */
  .nav > .nav-link {
    display: none;
  }

  /* Mobilde nav-links'i gizle (hamburger menü açık değilken) */
  .nav-links {
    display: none;
  }

  /* Mobilde nav içindeki yeni elementleri göster (hamburger açıkken) */
  .nav.active .nav-header,
  .nav.active .nav-links,
  .nav.active .nav-social {
    display: flex;
  }

  .nav-header {
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-shrink: 0;
    margin-top: var(--spacing-md);
  }

  .nav-logo-image {
    height: 70px;
    width: auto;
    max-width: 280px;
    object-fit: contain;
    display: block;
  }

  .nav-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
  }

  .nav-title-first,
  .nav-title-last {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    white-space: nowrap;
  }

  .nav-title-first {
    color: white;
  }

  .nav-title-last {
    color: rgba(96, 165, 250, 0.9);
    text-shadow: 0 0 15px rgba(96, 165, 250, 0.5);
  }

  .nav-links {
    flex: 1;
    padding: var(--spacing-xl) var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    overflow-y: auto;
  }

  .nav-link {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: rgba(255, 255, 255, 0.9);
    padding: var(--spacing-md) var(--spacing-lg);
    min-height: 48px;
    width: 100%;
    text-align: left;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.05));
    border: 1px solid rgba(255, 255, 255, 0.12);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: var(--spacing-md);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  }

  .nav-link svg {
    flex-shrink: 0;
    opacity: 0.8;
    transition: all 0.3s;
  }

  .nav-link:hover svg {
    opacity: 1;
    transform: scale(1.1);
    color: var(--color-accent-light);
  }

  .nav-link span {
    flex: 1;
  }

  .nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--color-accent-light), var(--color-accent), var(--color-secondary));
    transform: scaleY(0);
    transform-origin: center;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    box-shadow: 0 0 8px rgba(59, 130, 246, 0.5);
  }

  .nav-link:hover::before,
  .nav-link:active::before {
    transform: scaleY(1);
  }

  .nav-link::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(30, 64, 175, 0.15));
    opacity: 0;
    transition: opacity 0.3s;
    border-radius: var(--radius-md);
  }

  .nav-link:hover::after {
    opacity: 1;
  }

  .nav-link:hover {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.18), rgba(30, 64, 175, 0.12));
    border-color: rgba(59, 130, 246, 0.35);
    transform: translateX(6px);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.15);
    color: white;
  }

  /* Hamburger menü scroll durumunda değişmesin - arka plan sabit kalsın */
  .header.scrolled .nav {
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.98) 0%, rgba(30, 58, 138, 0.98) 100%);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.3);
  }

  .header.scrolled .nav::before {
    background: 
      radial-gradient(circle at top right, rgba(59, 130, 246, 0.2) 0%, transparent 50%),
      radial-gradient(circle at bottom left, rgba(30, 64, 175, 0.15) 0%, transparent 50%),
      linear-gradient(180deg, transparent 0%, rgba(59, 130, 246, 0.05) 100%);
  }

  /* Hamburger menü içindeki linkler scroll durumunda değişmesin */
  .header.scrolled .nav-link {
    color: rgba(255, 255, 255, 0.9);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.05));
    border-color: rgba(255, 255, 255, 0.12);
  }

  .header.scrolled .nav-link svg {
    opacity: 0.8;
    color: rgba(255, 255, 255, 0.9);
  }

  .header.scrolled .nav-link::after {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(30, 64, 175, 0.1));
  }

  .header.scrolled .nav-link:hover {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.25), rgba(30, 64, 175, 0.15));
    border-color: rgba(59, 130, 246, 0.4);
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  }

  .header.scrolled .nav-link:hover svg {
    color: white;
  }

  .nav-social {
    padding: var(--spacing-xl) var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .nav-social-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: nowrap;
    width: 100%;
    max-width: fit-content;
    margin: 0 auto;
  }

  .nav-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transition: all var(--transition-base);
    border: 1px solid rgba(255, 255, 255, 0.15);
    text-decoration: none;
  }

  .nav-social-link:hover {
    background: rgba(59, 130, 246, 0.25);
    border-color: rgba(59, 130, 246, 0.5);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
  }

  .nav-social-link svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-base);
  }

  .nav-social-link:hover svg {
    transform: scale(1.1);
  }

  .hero-title {
    font-size: var(--font-size-4xl);
  }

  .portfolio-grid,
  .portfolio-page-section .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    text-align: center;
  }

  .footer-content-single {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    text-align: center;
    padding: 0 var(--spacing-md);
  }

  .footer-brand {
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-md);
  }

  .footer-logo-image {
    height: 60px;
    max-width: 200px;
  }

  .footer-links-inline {
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin: var(--spacing-md) 0;
  }

  .footer-links-inline a {
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs);
  }

  .footer-separator {
    margin: 0 var(--spacing-xs);
  }

  .footer-social-inline {
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
  }

  .social-link-inline {
    width: 40px;
    height: 40px;
  }

  .social-link-inline svg {
    width: 20px;
    height: 20px;
  }

  .footer {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
  }

  .footer-section h4::after {
    left: 50%;
    transform: translateX(-50%);
  }

  .footer-links {
    display: inline-block;
    text-align: left;
  }

  .footer-bottom {
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
    font-size: var(--font-size-xs);
  }
}

/* WhatsApp Float Button */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4), 0 0 0 4px rgba(37, 211, 102, 0.1);
  z-index: 999;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  color: white;
  text-decoration: none;
  animation: whatsapp-pulse 2s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1) translateY(-4px);
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6), 0 0 0 6px rgba(37, 211, 102, 0.15);
}

.whatsapp-float:active {
  transform: scale(0.95);
}

.whatsapp-float svg {
  width: 28px;
  height: 28px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

@keyframes whatsapp-pulse {
  0%, 100% {
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4), 0 0 0 4px rgba(37, 211, 102, 0.1);
  }
  50% {
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.6), 0 0 0 8px rgba(37, 211, 102, 0.05);
  }
}

@media (max-width: 768px) {
  .whatsapp-float {
    width: 56px;
    height: 56px;
    bottom: 20px;
    right: 20px;
  }

  .whatsapp-float svg {
    width: 26px;
    height: 26px;
  }
}

/* Utility Classes */
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.mb-2xl { margin-bottom: var(--spacing-2xl); }

.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

.w-full { width: 100%; }
.h-full { height: 100%; }


/* .menu-toggle artık <div> değil <button>; tarayıcının varsayılan
   buton stillerini sıfırla ki görünüm değişmesin. */
button.menu-toggle {
  background: none;
  border: none;
  padding: 0;
  appearance: none;
  -webkit-appearance: none;
  font: inherit;
  color: inherit;
}