/* RESET & BASE */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html, body {
  height: 100%;
}

/* ROOT DEĞİŞKENLER */
:root {
  --dark-navy: #142143;         /* Koyu Lacivert */
  --yellow: #FFAF00;            /* Sarı */
  --blue: #1A5D94;              /* Mavi */
  --light-gray: #E4E4E4;        /* Açık Gri */
  --glass: rgba(255, 255, 255, 0.12);
  --glass-strong: rgba(255, 255, 255, 0.18);
  --stroke: rgba(255, 175, 0, 0.35);
  --card-bg: rgba(255, 255, 255, 0.92);
  --text-on-dark: rgba(255, 255, 255, 0.95);
  --text-muted-dark: rgba(255, 255, 255, 0.8);
  --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.65;
  color: var(--dark-navy);
  background: var(--light-gray);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-top: 80px; /* Header yüksekliği kadar */
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.25rem;
  position: relative;
  z-index: 2;
}

/* ============================== */
/* RESPONSIVE DESIGN */
/* ============================== */

/* --- Tablet ve Küçük Laptoplar (1100px) --- */
@media (max-width: 1100px) {
  .about-content {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

  .about-visual {
    height: 300px;
  }

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

  .stats-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- Tablet Dikey (860px) --- */
@media (max-width: 860px) {
  .services-grid,
  .blog-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }

  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

  .stats-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- Mobil Ekranlar (680px) --- */
@media (max-width: 680px) {
  .container {
    padding: 0 1rem;
  }

  /* Menü Mobilde Gizlenir */
  .nav-menu {
    display: none;
  }

  /* Servisler ve Blog Tek Kolon */
  .services-grid,
  .blog-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  /* İstatistikler Tek Kolon */
  .stats-container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  /* Başlık ve Paragraflar */
  h1 {
    font-size: 1.8rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  p {
    font-size: 1rem;
  }

  /* Görseller Mobilde Tam Genişlik */
  img {
    max-width: 100%;
    height: auto;
  }

  /* Contact Form Elemanları */
  .contact-content input,
  .contact-content textarea,
  .contact-content select {
    font-size: 1rem;
    padding: 12px;
  }

  /* Butonlar Mobil İçin Daha Büyük */
  button,
  .cta-button {
    padding: 14px 24px;
    font-size: 1rem;
  }
}

/* --- Çok Küçük Mobil Ekranlar (480px) --- */
@media (max-width: 480px) {
  body {
    padding-top: 60px;
  }

  .container {
    padding: 0 0.75rem;
  }

  /* Başlık Boyutları */
  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.3rem;
  }

  p {
    font-size: 0.9rem;
  }

  /* Grid Aralıkları Daha Küçük */
  .services-grid,
  .blog-grid {
    gap: 1rem;
  }

  /* Butonlar */
  button,
  .cta-button {
    width: 100%;
    padding: 12px;
  }
}

/* ============================== */
/* FORM SELECT OPTION THEME */
/* ============================== */
select option {
  background: var(--dark-navy);
  color: #fff;
}