/* ============================================================
   KeyBrothers Tech - Ana Stil Dosyası
   Renk paleti: Siyah-beyaz (logo) + mor/mavi vurgu
   ============================================================ */

/* ---------- Değişkenler (renk ve boyutları tek yerden yönetmek için) ---------- */
:root {
  /* Ana renkler */
  --color-bg: #0a0a0f;
  --color-surface: #12121a;
  --color-text: #e8e8ec;
  --color-text-muted: #9898a6;
  /* Vurgu: mor ve mavi tonları */
  --color-accent: #7c5cff;
  --color-accent-light: #9d85ff;
  --color-accent-blue: #5b7cff;
  --color-accent-glow: rgba(124, 92, 255, 0.35);
  /* Kenar ve gölge */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --radius: 12px;
  --radius-lg: 20px;
  /* Geçişler */
  --transition: 0.25s ease;
  /* Maksimum içerik genişliği (okunabilirlik) */
  --container-max: 1100px;
}

/* ---------- Sıfırlama ve temel stiller ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth; /* Menü linklerine tıklanınca yumuşak kaydırma */
}

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

/* Ortak container: içerik genişliğini sınırlar */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- HEADER / NAVİGASYON ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.15rem;
  transition: color var(--transition);
}

.nav-logo:hover {
  color: var(--color-accent-light);
}

.nav-logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.nav-logo-text {
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-menu a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-menu a:hover {
  color: var(--color-accent);
}

/* Henüz aktif olmayan / yönlendirme yapmayan menü öğesi (örn. Blog) */
.nav-link-disabled {
  color: var(--color-text-muted);
  opacity: 0.6;
  cursor: default;
}

/* Aktif sayfa: menüde bulunduğun sayfa vurgulu */
.nav-link-active {
  color: var(--color-accent-light) !important;
}

/* İç sayfalar: sabit header altında içerik başlasın diye üst boşluk */
.inner-page main {
  padding-top: 5.5rem;
}

/* Mobil menü butonu (varsayılan: gizli) */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: var(--transition);
}

/* ---------- HERO BÖLÜMÜ ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 1.5rem 4rem;
  overflow: hidden;
}

/* Spline 3D robot/sahne: tam ekran arka plan, tıklamalar içeriğe geçsin diye pointer-events: none */
.hero-spline {
  position: absolute;
  inset: 0;
  z-index: 0;
  min-height: 100%;
  pointer-events: none;
}

.hero-spline spline-viewer {
  width: 100%;
  height: 100%;
  min-height: 100vh;
  display: block;
  position: absolute;
  inset: 0;
}

/* Eski/dar cihazlarda Spline yerine hafif arka plan (kasma önleme) */
.hero-fallback {
  display: none;
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, var(--color-accent-glow), transparent 60%),
    linear-gradient(180deg, var(--color-bg) 0%, #0d0d14 50%, var(--color-bg) 100%);
  pointer-events: none;
}

/* Arka plan: hafif mor-mavi gradient + koyuluk; metnin okunaklı kalması için üst katman */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, var(--color-accent-glow), transparent 60%),
    linear-gradient(180deg, rgba(10, 10, 15, 0.7) 0%, rgba(10, 10, 15, 0.4) 50%, rgba(10, 10, 15, 0.85) 100%);
  pointer-events: none;
}

/* Robot alanında sol altta slogan: imza gibi el yazısı stilinde */
.hero-overlay-text {
  position: absolute;
  bottom: 5.5rem;
  left: 5rem;
  z-index: 2;
  color: var(--color-text);
  font-family: "Pacifico", cursive;
  font-size: 1.8rem;
  font-weight: 400;
  font-style: normal;
  transform: none;
  text-transform: lowercase;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.8);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.hero-logo {
  width: 100px;
  height: 100px;
  object-fit: contain;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #fff 0%, var(--color-accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

/* Ana buton */
.btn {
  display: inline-block;
  padding: 0.9rem 1.8rem;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-blue) 100%);
  color: #fff;
  border: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--color-accent-glow);
}

/* İkincil buton: çerçeveli */
.btn-outline {
  background: transparent;
  color: var(--color-accent-light);
  border: 2px solid var(--color-accent);
}
.btn-outline:hover {
  background: rgba(124, 92, 255, 0.15);
  transform: translateY(-2px);
}

/* Ana sayfa: diğer sayfalara kısayol butonları */
.home-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}
.home-links .btn { margin: 0; }

/* ---------- BÖLÜM ORTAK STİLLERİ ---------- */
.section {
  padding: 5rem 0;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
  text-align: center;
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto 3rem;
}

/* ---------- HAKKIMIZDA: Embed alanı (Spline vb.) ---------- */
.section-embed {
  background: var(--color-bg);
}

.embed-wrap {
  position: relative;
  width: 100%;
  min-height: 420px;
  height: clamp(420px, 70vh, 640px);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #0a0a0f;
}

.embed-wrap spline-viewer {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 420px;
}

/* Eski/dar cihazlarda Spline yerine hafif kutu (kasma önleme) */
.embed-fallback {
  display: none;
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 100%);
  pointer-events: none;
}

/* spline-disabled: Spline script yüklenmez, 3D gizlenir, fallback gösterilir */
.spline-disabled .hero-spline,
.spline-disabled .embed-wrap > spline-viewer {
  display: none !important;
}
.spline-disabled .hero-fallback,
.spline-disabled .embed-fallback {
  display: block !important;
}

/* HAKKIMIZDA: Spline üzerinde sol altta "kodluyoruz" etiketi */
.spline-overlay-text {
  position: absolute;
  bottom: 20px;
  left: 20px;
  z-index: 10; /* Spline'in üstünde dursun */
  color: var(--color-text);
  background-color: rgba(0, 0, 0, 0.6);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  font-style: italic;
  pointer-events: none; /* Tıklama yine Spline'a gitsin */
}

/* Spline sahnesinin içindeki 'kodluyoruz' yazısının üstünü kapatmak için sol altta maske */
.spline-cover-kodluyoruz {
  position: absolute;
  bottom: 18px;
  left: 16px;
  width: 140px;
  height: 40px;
  background: #000000;
  border-radius: 999px;
  z-index: 9; /* Spline'in üstünde, metin overlay'inin altında */
  pointer-events: none;
}

/* Sağ alttaki "Built with Spline" benzeri yazıyı kapatmak için örtü */
.spline-watermark-cover {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 280px;
  height: 56px;
  background: #0a0a0f;
  z-index: 9;
  pointer-events: none;
}

/* ---------- HAKKIMIZDA (metin) ---------- */
.section-about {
  background: var(--color-surface);
}

.about-content {
  max-width: 720px;
  margin: 0 auto;
}

.about-content p {
  margin-bottom: 1.25rem;
  color: var(--color-text-muted);
  text-align: justify;       /* Paragrafları iki yana yasla */
  text-justify: inter-word;
}

.about-lead {
  font-size: 1.15rem;
  color: var(--color-text) !important;
}

/* Şirket; SaaS... paragrafı tam mor */
/* Hakkımızda: sadece ürün/alan isimleri mor */
.about-content .about-highlight {
  color: var(--color-accent-light);
}

.about-content strong {
  color: var(--color-accent-light);
}

/* ---------- HİZMETLER (SERVICES) ---------- */
.section-services {
  background: var(--color-bg);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.service-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  padding: 1.8rem 1.6rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  text-align: center;        /* Hizmet kartlarındaki başlık ve metni ortaya hizala */
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px var(--color-accent-glow);
  border-color: var(--color-accent);
}

.service-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.service-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---------- NEDEN BİZ (WHY US) ---------- */
.section-why {
  background: radial-gradient(circle at top, rgba(124, 92, 255, 0.18), transparent 55%), var(--color-surface);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.why-card {
  position: relative;
  background: rgba(10, 10, 15, 0.9);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  padding: 1.8rem 1.6rem 1.6rem;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45);
  text-align: center;        /* Neden biz kartlarındaki metni ortaya hizala */
}

.why-badge {
  position: absolute;
  top: -14px;
  left: 16px;
  padding: 0.25rem 0.7rem;
  font-size: 0.8rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-blue) 100%);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.why-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.7rem;
}

.why-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---------- ÜRÜNLER (SAAS KARTLARI) ---------- */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.product-card {
  background: var(--color-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.product-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px var(--color-accent-glow);
}

.product-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-blue) 100%);
  border-radius: var(--radius);
  font-size: 1.25rem;
  color: #fff;
  margin-bottom: 1.25rem;
}

.product-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.product-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
  line-height: 1.5;
}

.product-link {
  color: var(--color-accent);
  font-weight: 600;
  text-decoration: none;
  transition: color var(--transition);
}

.product-link:hover {
  color: var(--color-accent-light);
}

/* ---------- ÜRÜN DETAY SAYFASI (tek ürün tanıtımı + ürün sitesine git) ---------- */
.product-detail {
  background: var(--color-surface);
}

.container-narrow {
  max-width: 640px;
}

.product-back {
  display: inline-block;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  transition: color var(--transition);
}
.product-back:hover {
  color: var(--color-accent);
}

.product-detail-icon {
  margin-bottom: 1rem;
}

.product-detail-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.product-detail-lead {
  margin-bottom: 1.5rem;
}

.product-detail .about-content {
  margin-bottom: 2rem;
}

.btn-product-site {
  display: inline-block;
  margin-top: 0.5rem;
}

/* ---------- İLETİŞİM ---------- */
.section-contact {
  background: var(--color-surface);
}

.contact-embed {
  margin: 2rem auto 3rem;
  max-width: 960px;
}

.contact-content {
  max-width: 480px;
  margin: 0 auto;
  text-align: center;
}

.contact-content p {
  margin-bottom: 0.75rem;
  color: var(--color-text-muted);
}

.contact-content a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

.contact-content a:hover {
  color: var(--color-accent-light);
}

/* ---------- FOOTER ---------- */
.footer {
  border-top: 1px solid var(--border-subtle);
  background: #050509;
  margin-top: 3rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1.2fr) minmax(0, 1.6fr);
  gap: 2.5rem;
  padding: 2.5rem 1.5rem 2rem;
  align-items: flex-start;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 1rem 1.5rem 1.6rem;
  text-align: center;
}

.footer-text {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text);
  text-decoration: none;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.footer-logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.footer-logo-text {
  font-size: 1.05rem;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  max-width: 360px;
}

.footer-heading {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.footer-nav ul {
  list-style: none;
}

.footer-nav li + li {
  margin-top: 0.35rem;
}

.footer-nav a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: var(--color-accent-light);
}

.footer-contact p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 0.3rem;
}

.footer-contact a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-contact a:hover {
  color: var(--color-accent-light);
}

/* ---------- RESPONSIVE: Tablet ve mobil ---------- */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: 1.5rem;
    gap: 0;
    border-bottom: 1px solid var(--border-subtle);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
  }

  .nav-menu.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-menu li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-menu li:last-child {
    border-bottom: none;
  }

  .nav-toggle {
    display: flex;
  }

  .section {
    padding: 3.5rem 0;
  }

  .hero {
    padding: 5rem 1rem 3rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    padding-inline: 1.5rem;
  }
}