/* ===========================
   TEMEL AYARLAR
   =========================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --blue-dark:   #1a6fa8;
  --blue-mid:    #2e8fc9;
  --blue-light:  #d0eaf8;
  --blue-pale:   #f0f8ff;
  --text-dark:   #1a2d3e;
  --text-mid:    #3a5470;
  --text-light:  #ffffff;
  --border:      #b8d9f0;
  --shadow:      0 2px 12px rgba(30, 100, 160, 0.10);
  --radius:      10px;
  --font:        'Segoe UI', Arial, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  color: var(--text-dark);
  background: #fff;
  font-size: 18px;
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
}

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

/* ===========================
   HEADER
   =========================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 2px solid var(--blue-light);
  box-shadow: 0 2px 8px rgba(30, 100, 160, 0.08);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  font-size: 2rem;
  line-height: 1;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.logo-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--blue-dark);
}

.logo-sub {
  font-size: 0.85rem;
  color: var(--blue-mid);
  font-weight: 500;
}

/* Masaüstü nav */
.nav-links {
  display: flex;
  gap: 28px;
}

.nav-links a {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-mid);
  padding: 6px 4px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.nav-links a:hover {
  color: var(--blue-dark);
  border-bottom-color: var(--blue-mid);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--blue-dark);
  border-radius: 2px;
  transition: background 0.2s;
}

/* Mobil nav menüsü */
.nav-mobile {
  display: none;
  flex-direction: column;
  background: #fff;
  border-top: 1px solid var(--blue-light);
  padding: 8px 0;
}

.nav-mobile a {
  padding: 14px 24px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-mid);
  border-bottom: 1px solid var(--blue-light);
}

.nav-mobile a:hover {
  background: var(--blue-pale);
  color: var(--blue-dark);
}

.nav-mobile.open {
  display: flex;
}

/* ===========================
   SLIDER
   =========================== */
.slider-section {
  position: relative;
  overflow: hidden;
  background: var(--blue-light);
  user-select: none;
}

.slider-wrapper {
  display: flex;
  transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.slide {
  min-width: 100%;
  position: relative;
}

/* Taslak fotoğraf alanı */
.slide-placeholder {
  width: 100%;
  height: 380px;
  background: linear-gradient(135deg, #b8d9f0 0%, #d0eaf8 60%, #e8f4fd 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-bottom: 3px solid var(--border);
}

.slide-icon {
  font-size: 4rem;
  opacity: 0.5;
}

.slide-label {
  font-size: 1.1rem;
  color: var(--blue-dark);
  font-weight: 600;
  opacity: 0.75;
}

.slide-hint {
  font-size: 0.85rem;
  color: var(--text-mid);
  opacity: 0.6;
}

/* Slide alt yazı */
.slide-caption {
  padding: 20px 28px;
  background: #fff;
  border-top: 2px solid var(--blue-light);
}

.slide-caption h2 {
  font-size: 1.5rem;
  color: var(--blue-dark);
  font-weight: 700;
  margin-bottom: 4px;
}

.slide-caption p {
  font-size: 1rem;
  color: var(--text-mid);
}

/* Slider butonları */
.slider-btn {
  position: absolute;
  top: calc(380px / 2);
  transform: translateY(-50%);
  background: rgba(255,255,255,0.88);
  border: 2px solid var(--border);
  color: var(--blue-dark);
  width: 46px;
  height: 46px;
  border-radius: 50%;
  font-size: 1.6rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  transition: background 0.2s, color 0.2s;
  z-index: 10;
  line-height: 1;
}

.slider-btn:hover {
  background: var(--blue-dark);
  color: #fff;
}

.slider-btn.prev { left: 12px; }
.slider-btn.next { right: 12px; }

/* Dots */
.slider-dots {
  position: absolute;
  bottom: 72px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}

.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
  border: 2px solid var(--blue-mid);
  cursor: pointer;
  transition: background 0.2s;
}

.slider-dot.active {
  background: var(--blue-dark);
}

/* ===========================
   GENEL SECTION
   =========================== */
.section {
  padding: 64px 0;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-title {
  font-size: 2rem;
  color: var(--blue-dark);
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
  padding-bottom: 14px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 56px;
  height: 4px;
  background: var(--blue-mid);
  border-radius: 2px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-mid);
  margin-bottom: 40px;
  max-width: 600px;
}

/* ===========================
   HİZMETLER
   =========================== */
.hizmetler {
  background: var(--blue-pale);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 24px;
}

.service-card {
  background: #fff;
  border: 2px solid var(--blue-light);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: border-color 0.2s, transform 0.2s;
}

.service-card:hover {
  border-color: var(--blue-mid);
  transform: translateY(-3px);
}

.service-icon {
  font-size: 2.8rem;
  margin-bottom: 16px;
  line-height: 1;
}

.service-card h3 {
  font-size: 1.2rem;
  color: var(--blue-dark);
  font-weight: 700;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 0.98rem;
  color: var(--text-mid);
  line-height: 1.65;
}

/* ===========================
   HAKKIMIZDA
   =========================== */
.hakkimizda {
  background: #fff;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 22px;
  margin-top: 28px;
}

.about-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.check {
  font-size: 1.3rem;
  color: var(--blue-mid);
  line-height: 1.4;
  flex-shrink: 0;
}

.about-list strong {
  display: block;
  font-size: 1.05rem;
  color: var(--text-dark);
  margin-bottom: 2px;
}

.about-list p {
  font-size: 0.97rem;
  color: var(--text-mid);
}

/* Hakkımızda taslak foto */
.about-placeholder {
  width: 100%;
  min-height: 320px;
  background: linear-gradient(135deg, #d0eaf8 0%, #e8f4fd 100%);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--blue-dark);
}

.about-placeholder span:first-child {
  font-size: 3.5rem;
  opacity: 0.45;
}

.about-placeholder p {
  font-size: 1rem;
  font-weight: 600;
  opacity: 0.7;
}

/* ===========================
   İLETİŞİM
   =========================== */
.iletisim {
  background: var(--blue-pale);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.contact-card {
  background: #fff;
  border: 2px solid var(--blue-light);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  box-shadow: var(--shadow);
}

.contact-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
  line-height: 1;
}

.contact-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--blue-dark);
  margin-bottom: 8px;
}

.contact-link {
  font-size: 1rem;
  color: var(--text-mid);
  font-weight: 600;
  line-height: 1.5;
  display: block;
}

a.contact-link:hover {
  color: var(--blue-dark);
  text-decoration: underline;
}

.contact-note {
  font-size: 0.85rem;
  color: var(--text-mid);
  margin-top: 6px;
  opacity: 0.75;
}

/* ===========================
   FOOTER
   =========================== */
.site-footer {
  background: var(--blue-dark);
  color: #fff;
  padding: 22px 0;
  text-align: center;
  font-size: 0.9rem;
  opacity: 0.9;
}

/* ===========================
   MOBİL (≤768px)
   =========================== */
@media (max-width: 768px) {
  body { font-size: 17px; }

  /* Header */
  .nav-links { display: none; }
  .nav-toggle { display: flex; }

  /* Slider */
  .slide-placeholder { height: 240px; }
  .slide-icon { font-size: 2.8rem; }
  .slide-caption h2 { font-size: 1.2rem; }
  .slider-btn { width: 36px; height: 36px; font-size: 1.3rem; }
  .slider-btn.prev { left: 6px; }
  .slider-btn.next { right: 6px; }
  .slider-dots { bottom: 64px; }

  /* Sections */
  .section { padding: 44px 0; }
  .section-title { font-size: 1.6rem; }

  /* Hizmetler */
  .services-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .service-card { padding: 22px 14px; }
  .service-card h3 { font-size: 1rem; }
  .service-card p { font-size: 0.9rem; }
  .service-icon { font-size: 2.2rem; }

  /* Hakkımızda */
  .about-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .about-placeholder { min-height: 200px; }

  /* İletişim */
  .contact-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .contact-card { padding: 20px 12px; }
}

@media (max-width: 480px) {
  .services-grid { grid-template-columns: 1fr; }
  .contact-grid  { grid-template-columns: 1fr; }
}