/* ==========================================================================
   UZUN KAPI — KRİTİK CSS
   <head> içine inline edilir. Yalnızca ilk ekranda (above-the-fold) görünen
   bileşenleri içerir: tasarım değişkenleri, temel tipografi, header, hero,
   butonlar. Amaç: render engelleyen istek olmadan LCP'yi çizmek (§30).
   ========================================================================== */

/* --------------------------------------------------------------------------
   TASARIM DEĞİŞKENLERİ — logo.jpeg piksel analizinden türetilmiştir (§1)
   Ölçülen değerler:  yeşil #006D00 · mavi #007ADF · zemin #000000
   Endüstriyel nötr:  #3A4149 (gerçek saha fotoğraflarındaki antrasit kepenk)
   -------------------------------------------------------------------------- */
:root {
  /* Ana renk — logo yeşili */
  --color-primary:        #006D00;
  --color-primary-dark:   #004E00;
  --color-primary-darker: #003600;
  --color-primary-light:  #0B8A0B;
  --color-primary-tint:   #EDF5ED;

  /* İkincil renk — logo mavisi */
  --color-secondary:      #007ADF;
  --color-secondary-dark: #0062B8;   /* metin bağlantısı için AA kontrast */
  --color-secondary-tint: #E8F3FC;

  /* Vurgu — logo yeşilinden türetilmiş parlak ton */
  --color-accent:         #00B140;

  /* Endüstriyel nötr */
  --color-steel:          #3A4149;
  --color-steel-light:    #5A626C;

  /* Koyu — logo zemini */
  --color-dark:           #0A0D0A;
  --color-dark-soft:      #161C16;

  /* Metin */
  --color-text:           #14181C;
  --color-muted:          #59646E;

  /* Yüzeyler */
  --color-background:     #FFFFFF;
  --color-surface:        #F5F7F5;
  --color-surface-2:      #ECF0EC;
  --color-border:         #E1E6E1;
  --color-border-strong:  #C9D1C9;

  /* Durum */
  --color-success:        #006D00;
  --color-success-bg:     #EDF5ED;
  --color-error:          #B32D2E;
  --color-error-bg:       #FCEDED;
  /*
   * WhatsApp yeşili. Beyaz metinle 4.5:1 (WCAG AA) sağlamak ZORUNDA;
   * butonun üstündeki yazı 17px/600'dür, yani "büyük metin" sayılmaz.
   * Eski değer #1EA362 yalnızca 3.25:1 veriyordu ve Lighthouse
   * erişilebilirlik denetiminde düşüyordu. #17864F → 4.61:1.
   */
  --color-whatsapp:       #17864F;
  --color-whatsapp-dark:  #0D6A3C;   /* hover — 6.68:1 */

  /* Tipografi — sistem font yığını: 0 istek, 0 CLS, KVKK dostu (§2) */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", "Noto Sans", Arial, sans-serif;

  --fs-xs:   0.8125rem;
  --fs-sm:   0.9375rem;
  --fs-base: 1.0625rem;
  --fs-lg:   1.1875rem;
  --fs-xl:   1.375rem;
  --fs-2xl:  1.75rem;
  --fs-3xl:  2.25rem;
  --fs-4xl:  2.75rem;

  /* Aralık ölçeği */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4rem;
  --sp-9: 5.5rem;

  /* Yapı — endüstriyel/kurumsal ölçüler: az yuvarlaklık (§2) */
  --radius-sm: 3px;
  --radius:    4px;
  --radius-lg: 6px;

  --container:        1280px;
  --container-narrow: 780px;

  --shadow-sm: 0 1px 2px rgba(10,13,10,.06), 0 1px 3px rgba(10,13,10,.05);
  --shadow:    0 2px 6px rgba(10,13,10,.07), 0 8px 24px rgba(10,13,10,.06);
  --shadow-lg: 0 4px 12px rgba(10,13,10,.08), 0 20px 48px rgba(10,13,10,.10);

  --header-h: 76px;
  --ease: cubic-bezier(.2,.7,.3,1);
}

/* --------------------------------------------------------------------------
   TEMEL
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-background);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;           /* §75: yatay taşma olmayacak */
}

img, svg, video { max-width: 100%; height: auto; display: block; }
svg { flex: none; }

h1, h2, h3, h4 {
  margin: 0 0 var(--sp-4);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

h1 { font-size: clamp(1.875rem, 1.2rem + 2.6vw, var(--fs-4xl)); }
h2 { font-size: clamp(1.5rem, 1.1rem + 1.6vw, var(--fs-3xl)); }
h3 { font-size: var(--fs-xl); }

p { margin: 0 0 var(--sp-4); }
p:last-child { margin-bottom: 0; }

a { color: var(--color-secondary-dark); }

/* Erişilebilir odak halkası — her yerde görünür (§32) */
:focus-visible {
  outline: 3px solid var(--color-secondary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.screen-reader-text {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute;
  top: -100px; left: var(--sp-4);
  z-index: 999;
  padding: var(--sp-3) var(--sp-5);
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0 0 var(--radius) var(--radius);
}
.skip-link:focus { top: 0; }

/* --------------------------------------------------------------------------
   YERLEŞİM
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--sp-4);
}
.container--narrow { max-width: var(--container-narrow); }

@media (min-width: 768px) {
  .container { padding-inline: var(--sp-6); }
}

/* --------------------------------------------------------------------------
   BUTONLAR (§57)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 0.8125rem 1.5rem;
  min-height: 48px;                 /* mobil dokunma hedefi */
  font: inherit;
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  text-align: center;
  border: 2px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  /* Buton metni asla iki satıra kırılmaz — header'da düzeni bozuyordu. */
  white-space: nowrap;
  transition: background-color .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease), transform .18s var(--ease);
}

/* Hero'daki uzun CTA'lar dar mobilde sarabilsin. */
.hero__actions .btn,
.cta-box__actions .btn { white-space: normal; }

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

.btn--outline {
  background: transparent;
  border-color: var(--color-border-strong);
  color: var(--color-text);
}
.btn--outline:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn--ghost {
  background: transparent;
  border-color: transparent;
  color: var(--color-text);
  padding-inline: var(--sp-3);
}
.btn--ghost:hover { color: var(--color-primary); }

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

.btn--lg { padding: 1rem 1.875rem; font-size: var(--fs-base); min-height: 54px; }
.btn--sm { padding: 0.5rem 1rem; min-height: 40px; font-size: var(--fs-xs); }
.btn--block { width: 100%; }

/* --------------------------------------------------------------------------
   HEADER (§4)
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.96);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  min-height: var(--header-h);
}

.site-logo { display: block; flex: none; line-height: 0; }
.site-logo img { width: 156px; height: auto; }

@media (min-width: 1140px) {
  .site-logo img { width: 184px; }
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
}

.nav-toggle__icon { display: block; width: 22px; }
.nav-toggle__icon span {
  display: block;
  height: 2px;
  margin: 4px 0;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__icon span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Mobil menü paneli */
.site-nav {
  display: none;
  position: absolute;
  left: 0; right: 0;
  top: 100%;
  padding: var(--sp-4);
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow);
  max-height: calc(100vh - var(--header-h));
  max-height: calc(100dvh - var(--header-h));
  overflow-y: auto;
}
.site-nav.is-open { display: block; }

.nav-list { list-style: none; margin: 0; padding: 0; }
.nav-list a {
  display: block;
  padding: var(--sp-3) var(--sp-2);
  color: var(--color-text);
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-sm);
}
.nav-list a:hover { color: var(--color-primary); background: var(--color-surface); }

.site-nav__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--color-border);
}

@media (min-width: 1140px) {
  .nav-toggle { display: none; }

  .site-nav {
    display: flex !important;
    position: static;
    align-items: center;
    gap: var(--sp-5);
    padding: 0;
    background: none;
    border: 0;
    box-shadow: none;
    max-height: none;
    overflow: visible;
  }

  .nav-list {
    display: flex;
    align-items: center;
    gap: 2px;
    flex: 1 1 auto;
    min-width: 0;               /* flex öğesinin taşmasını engeller */
    justify-content: center;
  }
  .nav-list a { padding: var(--sp-2) var(--sp-2); font-size: var(--fs-sm); white-space: nowrap; }

  .site-nav__actions {
    margin: 0; padding: 0; border: 0;
    flex: 0 0 auto;             /* telefon ve CTA asla sıkışmaz */
    flex-wrap: nowrap;
    align-items: center;
  }

  /* Header telefonu tek satırda kalsın. */
  .site-nav__actions .btn--phone,
  .site-nav__actions .btn--ghost { white-space: nowrap; }
}

@media (min-width: 1200px) {
  .nav-list { gap: var(--sp-1); }
  .nav-list a { padding: var(--sp-2) var(--sp-3); }
}

/* --------------------------------------------------------------------------
   HERO (§7) — LCP bölgesi
   -------------------------------------------------------------------------- */
.hero {
  padding-block: var(--sp-7) var(--sp-7);
  background:
    radial-gradient(70% 120% at 8% 0%, var(--color-primary-tint) 0%, transparent 62%),
    var(--color-background);
  border-bottom: 1px solid var(--color-border);
}

.hero__inner { display: grid; gap: var(--sp-6); }

.hero__eyebrow {
  margin: 0 0 var(--sp-3);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.hero__title { margin-bottom: var(--sp-4); }

.hero__lead {
  max-width: 62ch;
  font-size: var(--fs-lg);
  color: var(--color-muted);
  margin-bottom: var(--sp-5);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}

.hero__phone {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--color-text);
}
.hero__phone svg { color: var(--color-primary); }
.hero__phone a { color: inherit; text-decoration: none; }
.hero__phone a:hover { color: var(--color-primary); }

.hero__media { position: relative; }
.hero__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  background: var(--color-surface-2);   /* yüklenene kadar CLS'siz yer tutucu */
}

.hero--archive, .hero--page, .hero--contact { padding-block: var(--sp-6); }

@media (min-width: 900px) {
  .hero { padding-block: var(--sp-8) var(--sp-8); }

  .hero--with-image .hero__inner {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--sp-7);
  }
}

@media (min-width: 1200px) {
  .hero--with-image .hero__inner { grid-template-columns: 1.05fr 1fr; }
}

/* Hareket azaltma tercihi (§28) */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}
