:root {
  --brand-navy: #14213d;
  --brand-blue: #1f4e79;
  --brand-gold: #c9972b;
  --brand-ink: #1f2937;
  --brand-muted: #5f6b7a;
  --brand-line: #d9dee7;
  --brand-soft: #f4f6f9;
}

html {
  scroll-behavior: smooth;
}

body {
  color: var(--brand-ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.65;
  background-color: #f7f8fa !important;
}

.sticky-top {
  border-bottom: 1px solid var(--brand-line);
  box-shadow: 0 4px 18px rgba(20, 33, 61, 0.06) !important;
}

.navbar {
  min-height: 76px;
}

.navbar-brand img {
  height: 34px;
  width: auto;
}

.navbar .nav-link {
  color: var(--brand-navy);
  font-size: 0.95rem;
  font-weight: 600;
  padding-inline: 0.75rem;
}

.navbar .nav-link:hover,
.navbar .nav-link:focus {
  color: var(--brand-blue);
}

.dropdown-menu {
  border: 1px solid var(--brand-line);
  border-radius: 6px;
  box-shadow: 0 12px 28px rgba(20, 33, 61, 0.12);
}

.btn {
  border-radius: 6px;
  font-weight: 700;
}

.btn-warning,
.btn-primary {
  color: #fff;
  background-color: var(--brand-navy);
  border-color: var(--brand-navy);
}

.btn-warning:hover,
.btn-warning:focus,
.btn-primary:hover,
.btn-primary:focus {
  color: #fff;
  background-color: var(--brand-blue);
  border-color: var(--brand-blue);
}

.btn-outline-warning {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.72);
  background-color: transparent;
}

.btn-outline-warning:hover,
.btn-outline-warning:focus {
  color: var(--brand-navy);
  background-color: #fff;
  border-color: #fff;
}

.btn-success {
  background-color: #1f6f50;
  border-color: #1f6f50;
}

.banner-section {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(90deg, rgba(20, 33, 61, 0.92) 0%, rgba(20, 33, 61, 0.78) 48%, rgba(20, 33, 61, 0.32) 100%),
    url('../img/banner.png') center/cover no-repeat;
}

.banner-section h1 {
  max-width: 720px;
  font-size: clamp(2.4rem, 5vw, 4.25rem);
  letter-spacing: 0;
  text-shadow: none !important;
}

.banner-section p {
  color: rgba(255, 255, 255, 0.9);
}

section {
  border-bottom: 1px solid rgba(217, 222, 231, 0.72);
}

section h2,
section h3 {
  color: var(--brand-navy);
  letter-spacing: 0;
}

.bg-light,
.bg-body-tertiary {
  background-color: var(--brand-soft) !important;
}

.card {
  border: 1px solid var(--brand-line) !important;
  border-radius: 8px !important;
  box-shadow: 0 10px 26px rgba(20, 33, 61, 0.06);
}

.card-title,
.card h4,
.card h5 {
  color: var(--brand-navy);
}

.list-group-item {
  border-color: var(--brand-line);
  color: var(--brand-ink);
  background-color: transparent;
}

.list-group-flush .list-group-item {
  padding: 0.9rem 0;
}

#ai-siri {
  background: #fff !important;
}

#ai-siri .bi {
  color: var(--brand-gold) !important;
}

#ai-siri .list-group-item::before,
#insaat .list-group-item::before,
#ozellikler .list-group-item::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 10px;
  border-radius: 50%;
  background-color: var(--brand-gold);
  vertical-align: middle;
}

#referanslar .card {
  box-shadow: none;
  background: #fff;
}

#referanslar img {
  filter: saturate(0.86);
}

footer {
  color: var(--brand-muted);
  background-color: #fff !important;
}

.hover-shadow:hover {
  transform: translateY(-3px);
  transition: all 0.25s ease;
  box-shadow: 0 12px 28px rgba(20, 33, 61, 0.12) !important;
}

@media (max-width: 991.98px) {
  .banner-section {
    min-height: auto;
    background:
      linear-gradient(90deg, rgba(20, 33, 61, 0.92) 0%, rgba(20, 33, 61, 0.78) 100%),
      url('../img/banner.png') center/cover no-repeat;
  }

  .navbar .btn {
    width: 100%;
    margin-top: 0.5rem;
  }
}