:root{
  /* Zemin */
  --ak-bg: #050607;
  --ak-bg-deep: #0b0c0e;

  /* Metin */
  --ak-text: #f2f2f2;
  --ak-muted: #b5b5b5;

  /* Ateş Renkleri */
  --ak-fire-red: #ff2a1a;
  --ak-fire-orange: #ff7a18;
  --ak-fire-yellow: #ffb347;

  /* Cam / Metal */
  --ak-glass: rgba(255,255,255,0.06);
  --ak-border: rgba(255,90,40,0.35);
  --ak-shadow: rgba(0,0,0,0.65);

  /* HTML'de kullanılan alias'lar */
  --ak-accent: var(--ak-fire-red);
  --ak-accent2: var(--ak-fire-orange);

  /* Yerleşim */
  --ak-nav-height: 72px;
}

/* -------------------------------
   GLOBAL
-------------------------------- */

html, body{
  height: 100%;
}

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

html{
  scroll-behavior: smooth;
}

body{
  /* Bootstrap değişkenlerini tema ile hizala (özellikle başlık renkleri) */
  --bs-body-color: var(--ak-text);
  --bs-heading-color: var(--ak-text);
  --bs-secondary-color: var(--ak-muted);
  --bs-tertiary-color: rgba(181,181,181,0.78);
  --bs-border-color: rgba(255,90,40,0.35);

  background:
    radial-gradient(900px 500px at 15% 10%, rgba(255,42,26,0.18), transparent 60%),
    radial-gradient(800px 400px at 85% 20%, rgba(255,122,24,0.15), transparent 55%),
    linear-gradient(180deg, var(--ak-bg), var(--ak-bg-deep));
  color: var(--ak-text);
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  padding-top: var(--ak-nav-height);
}

/* Anasayfa: hero arkaplanı navbar altına uzasın */
body.home{
  padding-top: 0 !important;
}

h1, h2, h3, h4, h5, h6{
  color: var(--ak-text);
}

img{
  max-width: 100%;
  height: auto;
}

::selection{
  background: rgba(255,122,24,0.25);
  color: var(--ak-text);
}

.muted{
  color: var(--ak-muted) !important;
}

.section-title{
  font-weight: 800;
  letter-spacing: 0.2px;
  color: var(--ak-text);
  display: inline-block;
  position: relative;
}

.section-title::after{
  content: "";
  display: block;
  height: 3px;
  width: 64px;
  margin-top: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--ak-fire-red), var(--ak-fire-orange), var(--ak-fire-yellow));
  opacity: 0.9;
}

/* Bootstrap'ta yok: w-100 w-lg-auto kullanımı için */
@media (min-width: 992px){
  .w-lg-auto{ width: auto !important; }
}

@media (max-width: 575.98px){
  :root{ --ak-nav-height: 64px; }
}

/* -------------------------------
   NAVBAR
-------------------------------- */

.navbar{
  background: rgba(5,6,7,0.75) !important;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--ak-border);
  box-shadow: 0 10px 30px var(--ak-shadow);
}

@supports not ((backdrop-filter: blur(10px)) or (-webkit-backdrop-filter: blur(10px))){
  .navbar{ background: rgba(5,6,7,0.92) !important; }
}

.navbar .nav-link{
  color: rgba(242,242,242,0.78);
  font-weight: 600;
}

.navbar .nav-link:hover,
.navbar .nav-link:focus{
  color: var(--ak-fire-yellow);
}

.navbar .nav-link.active{
  color: var(--ak-fire-orange);
}

.navbar .navbar-toggler{
  border-color: rgba(255,90,40,0.35);
}

.navbar .navbar-toggler:focus{
  box-shadow: 0 0 0 0.2rem rgba(255,122,24,0.25);
}

/* Mobil navbar iyileştirmeleri (Bootstrap lg altı) */
@media (max-width: 991.98px){
  .navbar{
    padding-top: 0.65rem;
    padding-bottom: 0.65rem;
  }

  .navbar .navbar-brand{
    /* Toggler butonunun her telefonda aynı satırda kalması için */
    flex: 1 1 auto;
    min-width: 0;
    max-width: calc(100% - 4.25rem);
  }

  .brand-badge{
    display: inline-flex;
    align-items: center;
    max-width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.95rem;
    padding: 0.28rem 0.75rem;
    letter-spacing: 0.2px;
  }

  .navbar .navbar-toggler{
    flex: 0 0 auto;
    flex-shrink: 0;
    margin-left: 0.5rem;
    padding: 0.25rem 0.5rem;
    line-height: 1;
  }

  .brand-badge > span:first-child{
    margin-right: 0.55rem;
    flex: 0 0 auto;
  }

  .navbar .navbar-collapse{
    margin-top: 0.75rem;
    padding: 0.5rem;
    border-radius: 16px;
    background: rgba(5,6,7,0.92);
    border: 1px solid var(--ak-border);
    box-shadow: 0 18px 50px var(--ak-shadow);
    backdrop-filter: blur(10px);
  }

  .navbar .navbar-nav{
    gap: 0.25rem !important;
  }

  .navbar .nav-link{
    padding: 0.75rem 0.9rem;
    border-radius: 12px;
  }

  .navbar .nav-link:hover,
  .navbar .nav-link:focus{
    background: rgba(255,90,40,0.10);
  }

  .navbar .nav-link.active{
    background: rgba(255,90,40,0.16);
  }
}

.navbar .navbar-brand{
  color: var(--ak-text) !important;
}

.navbar .navbar-brand:hover,
.navbar .navbar-brand:focus{
  color: var(--ak-fire-yellow) !important;
}

.brand-badge{
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  background: linear-gradient(
    135deg,
    rgba(255,42,26,0.35),
    rgba(255,122,24,0.25)
  );
  border: 1px solid var(--ak-border);
  box-shadow: inset 0 0 12px rgba(255,80,30,0.35);
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--ak-text);
}

/* -------------------------------
   HERO
-------------------------------- */

.hero{
  padding: 4.75rem 0 3.5rem;
}

body.home .hero.hero--banner{
  padding: calc(8.15rem + var(--ak-nav-height)) 0 6rem;
}

/* Anasayfa: karşılama (hero) arkaplan banner */
.hero--banner{
  position: relative;
  background:
    linear-gradient(180deg, rgba(5,6,7,0.25), rgba(5,6,7,0.94)),
    radial-gradient(900px 500px at 15% 10%, rgba(255,42,26,0.22), transparent 60%),
    radial-gradient(800px 400px at 85% 20%, rgba(255,122,24,0.18), transparent 55%),
    url("../img/1.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: scroll; /* hareketsiz */
  border-bottom: 0;
  box-shadow: 0 18px 50px var(--ak-shadow);
}

/* Anasayfa banner'da ince çizgi ayarı*/
.home .navbar{
  border-bottom: 0 !important;
  box-shadow: none !important;
}

@media (max-width: 575.98px){
  .hero{ padding: 3.25rem 0 2.75rem; }
  body.home .hero.hero--banner{ padding: calc(5.56rem + var(--ak-nav-height)) 0 4.73rem; }
}

.gradient-text{
  background: linear-gradient(
    90deg,
    var(--ak-fire-red),
    var(--ak-fire-orange),
    var(--ak-fire-yellow)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead{
  color: var(--ak-muted);
}

/* -------------------------------
   CARDS – CAM + ATEŞ KENAR
-------------------------------- */

.card-glass{
  background: linear-gradient(
    180deg,
    rgba(255,255,255,0.08),
    rgba(255,255,255,0.03)
  );
  border-radius: 18px;
  border: 1px solid var(--ak-border);
  box-shadow:
    0 20px 50px var(--ak-shadow),
    inset 0 0 20px rgba(255,90,40,0.15);
  transition: all 0.3s ease;
}

.card-glass:hover{
  transform: translateY(-4px);
  box-shadow:
    0 30px 70px rgba(0,0,0,0.8),
    inset 0 0 30px rgba(255,90,40,0.35);
}

/* -------------------------------
   KPI / SAYILAR
-------------------------------- */

.kpi{
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(
    90deg,
    var(--ak-fire-orange),
    var(--ak-fire-yellow)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* -------------------------------
   BADGE
-------------------------------- */

.badge-soft{
  background: rgba(255,90,40,0.18);
  border: 1px solid var(--ak-border);
  color: var(--ak-text);
  font-weight: 600;
}

/* -------------------------------
   BUTTONS
-------------------------------- */

.btn-accent{
  background: linear-gradient(
    90deg,
    var(--ak-fire-red),
    var(--ak-fire-orange)
  );
  border: none;
  color: #111;
  font-weight: 800;
  box-shadow:
    0 0 18px rgba(255,80,30,0.6),
    inset 0 0 8px rgba(255,255,255,0.3);
}

.btn-accent:hover{
  opacity: 0.95;
  box-shadow:
    0 0 28px rgba(255,120,40,0.9),
    inset 0 0 12px rgba(255,255,255,0.35);
}

.btn-accent:focus-visible,
.btn-outline-light:focus-visible,
.btn:focus-visible{
  outline: 0;
  box-shadow:
    0 0 0 0.22rem rgba(255,122,24,0.35),
    0 0 28px rgba(255,120,40,0.55);
}

/* -------------------------------
   FORM ELEMENTLERİ
-------------------------------- */

.form-control,
textarea{
  background: rgba(0,0,0,0.35);
  border: 1px solid var(--ak-border);
  color: var(--ak-text);
}

.form-control::placeholder,
textarea::placeholder{
  color: rgba(181,181,181,0.75);
}

.form-control:focus,
textarea:focus{
  background: rgba(0,0,0,0.45);
  border-color: var(--ak-fire-orange);
  box-shadow: 0 0 0 0.15rem rgba(255,122,24,0.35);
  color: var(--ak-text);
}

/* -------------------------------
   ACCORDION
-------------------------------- */

.accordion-button{
  color: var(--ak-text);
  font-weight: 600;
}

.accordion-button:not(.collapsed){
  background: rgba(255,80,30,0.18) !important;
  color: var(--ak-fire-yellow) !important;
}

.accordion-button:focus{
  border-color: var(--ak-fire-orange);
  box-shadow: 0 0 0 0.2rem rgba(255,122,24,0.25);
}

/* -------------------------------
   IMAGE FRAME
-------------------------------- */

.img-frame{
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--ak-border);
  box-shadow: 0 25px 60px var(--ak-shadow);
}

.img-frame img{
  display: block;
}

/* -------------------------------
   EMBED (Figma iframe)
-------------------------------- */

.embed-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-bottom: 1.25rem;

  /* Diyagramları daha küçük tut */
  max-width: 1040px;
  margin-inline: auto;
}

@media (min-width: 992px){
  .embed-grid{
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

.embed-item h5{
  margin-bottom: 0.75rem;
}

.embed-frame{
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--ak-border);
  box-shadow: 0 25px 60px var(--ak-shadow);
  background: rgba(0,0,0,0.25);

  /* Responsive aspect ratio */
  aspect-ratio: 16 / 9;
  width: 100%;
}

.embed-frame__iframe{
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

@media (max-width: 575.98px){
  .embed-frame{ aspect-ratio: 4 / 3; }
}

/* -------------------------------
   FOOTER
-------------------------------- */

.footer{
  background: rgba(0,0,0,0.4);
  border-top: 1px solid var(--ak-border);
  box-shadow: inset 0 1px 0 rgba(255,80,30,0.25);
}

.small-note{
  font-size: 0.9rem;
  color: var(--ak-muted);
}

/* -------------------------------
   LINKLER
-------------------------------- */

a:not(.btn){
  color: var(--ak-fire-orange);
  text-decoration-color: rgba(255,122,24,0.35);
  text-underline-offset: 3px;
}

a:not(.btn):hover{
  color: var(--ak-fire-yellow);
  text-decoration-color: rgba(255,179,71,0.55);
}

/* Bootstrap utility'lerini ezme */
a.text-light,
a.text-white,
.navbar a.nav-link,
.navbar a.navbar-brand{
  text-decoration-color: currentColor;
}

/* Klavye kullanıcıları için net odak */
:where(a, button, input, textarea, select, .accordion-button, .navbar-toggler):focus-visible{
  outline: 2px solid rgba(255,122,24,0.55);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ transition: none !important; animation: none !important; }
}