/* ================================
   KG SAVUNMA — Kurumsal Web Sitesi
   ================================ */

:root {
  --bg: #0b0b0d;
  --bg-2: #111114;
  --bg-3: #17181c;
  --surface: #1c1d22;
  --border: #26272d;
  --text: #eceef2;
  --text-dim: #9a9da6;
  --text-mute: #6b6e78;
  --accent: #f5c842;
  --accent-2: #ffd76a;
  --accent-glow: rgba(245, 200, 66, 0.35);
  --danger: #e54b4b;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-soft: 0 10px 40px rgba(0, 0, 0, 0.35);
  --shadow-hard: 0 20px 60px rgba(0, 0, 0, 0.55);
  --ease: cubic-bezier(.22,.61,.36,1);
  --container: 1280px;
  --nav-h: 78px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--bg); color: var(--text); }
body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 16px; line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body.no-scroll { overflow: hidden; }

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--accent); }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 28px; }

/* ---- Typography ---- */
h1, h2, h3, h4 { font-family: 'Inter', sans-serif; font-weight: 800; letter-spacing: -0.02em; line-height: 1.1; }
h1 { font-size: clamp(2.2rem, 5vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.8rem); }
h3 { font-size: 1.35rem; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: .78rem; font-weight: 700; letter-spacing: .22em;
  color: var(--accent); text-transform: uppercase;
}
.eyebrow::before {
  content: ''; width: 26px; height: 2px; background: var(--accent);
}
.section-title { margin: 10px 0 14px; }
.section-lead { color: var(--text-dim); font-size: 1.05rem; max-width: 620px; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 10px; padding: 14px 26px; border-radius: 999px;
  font-weight: 700; font-size: .95rem; letter-spacing: .02em;
  transition: all .3s var(--ease);
  cursor: pointer; white-space: nowrap;
}
.btn-primary {
  background: var(--accent); color: #18181a;
  box-shadow: 0 10px 30px var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 40px var(--accent-glow);
  background: var(--accent-2);
}
.btn-outline {
  background: transparent; color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost { padding: 10px 18px; color: var(--text-dim); }
.btn-ghost:hover { color: var(--text); }

/* ================================
   NAVIGATION
   ================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center;
  background: rgba(11, 11, 13, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: background .3s, border-color .3s;
}
.nav.scrolled {
  background: rgba(11, 11, 13, 0.92);
  border-bottom-color: var(--border);
}
.nav .container {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.nav-logo {
  display: flex; align-items: center; gap: 12px;
  font-weight: 800; font-size: 1.1rem; letter-spacing: .04em;
}
.nav-logo-mark {
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--bg-3); display: grid; place-items: center;
  overflow: hidden;
}
.nav-logo-mark svg { width: 32px; height: auto; }
.nav-logo small { display: block; color: var(--text-mute); font-size: .65rem; font-weight: 600; letter-spacing: .25em; }

.nav-menu { display: flex; align-items: center; gap: 6px; }
.nav-menu a {
  padding: 10px 16px; border-radius: 10px; font-size: .95rem; font-weight: 500;
  color: var(--text-dim);
}
.nav-menu a:hover, .nav-menu a.active { color: var(--text); background: var(--bg-3); }
.nav-menu a.active { color: var(--accent); }

.nav-actions { display: flex; align-items: center; gap: 10px; }
.lang-switch {
  display: inline-flex; background: var(--bg-3);
  border: 1px solid var(--border); border-radius: 999px; padding: 3px;
}
.lang-switch button {
  padding: 7px 12px; border-radius: 999px;
  font-size: .75rem; font-weight: 700; letter-spacing: .1em;
  color: var(--text-mute);
}
.lang-switch button.active { background: var(--accent); color: #18181a; }

.nav-burger {
  display: none; width: 44px; height: 44px; border-radius: 10px;
  background: var(--bg-3); border: 1px solid var(--border);
  align-items: center; justify-content: center;
}
.nav-burger span {
  display: block; width: 18px; height: 2px; background: var(--text);
  position: relative;
}
.nav-burger span::before, .nav-burger span::after {
  content: ''; position: absolute; left: 0; width: 100%; height: 2px; background: var(--text);
  transition: transform .3s var(--ease);
}
.nav-burger span::before { top: -6px; }
.nav-burger span::after { top: 6px; }
.nav-burger.open span { background: transparent; }
.nav-burger.open span::before { top: 0; transform: rotate(45deg); }
.nav-burger.open span::after { top: 0; transform: rotate(-45deg); }

/* ================================
   HERO
   ================================ */
.hero {
  position: relative; min-height: 100vh;
  padding: calc(var(--nav-h) + 40px) 0 80px;
  display: flex; align-items: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 75% 40%, rgba(245, 200, 66, 0.10), transparent 50%),
    radial-gradient(circle at 20% 80%, rgba(245, 200, 66, 0.05), transparent 55%);
  pointer-events: none;
}
.hero-grid-bg {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(circle at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at center, black 30%, transparent 75%);
}
.hero .container {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center;
}
.hero-text .eyebrow { margin-bottom: 18px; }
.hero-text h1 { margin-bottom: 22px; }
.hero-text h1 .accent { color: var(--accent); }
.hero-text .lead { color: var(--text-dim); font-size: 1.15rem; margin-bottom: 32px; max-width: 520px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 44px; }

.hero-stats {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 30px; padding-top: 30px;
  border-top: 1px solid var(--border);
}
.hero-stat .num {
  font-size: 2.2rem; font-weight: 800; color: var(--accent);
  letter-spacing: -0.02em;
}
.hero-stat .lbl { color: var(--text-dim); font-size: .85rem; margin-top: 4px; }

/* 3D Viewer Canvas */
.hero-viewer {
  position: relative;
  aspect-ratio: 1;
  background:
    radial-gradient(circle at center, rgba(245,200,66,0.08), transparent 60%),
    linear-gradient(135deg, var(--bg-2), var(--bg-3));
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-hard);
}
.hero-viewer canvas { width: 100% !important; height: 100% !important; display: block; }
.viewer-badge {
  position: absolute; top: 18px; left: 18px; z-index: 3;
  background: rgba(0,0,0,0.55); backdrop-filter: blur(6px);
  padding: 8px 14px; border-radius: 999px;
  border: 1px solid var(--border);
  font-size: .72rem; font-weight: 700; letter-spacing: .15em; text-transform: uppercase;
  color: var(--accent);
}
.viewer-tabs {
  position: absolute; bottom: 18px; left: 50%; transform: translateX(-50%); z-index: 3;
  display: flex; gap: 6px; padding: 6px;
  background: rgba(0,0,0,0.55); backdrop-filter: blur(8px);
  border: 1px solid var(--border); border-radius: 999px;
}
.viewer-tabs button {
  padding: 8px 18px; border-radius: 999px;
  font-size: .8rem; font-weight: 600; color: var(--text-dim);
  transition: all .25s var(--ease);
}
.viewer-tabs button.active { background: var(--accent); color: #18181a; }
.viewer-hint {
  position: absolute; bottom: 18px; right: 18px; z-index: 3;
  color: var(--text-mute); font-size: .72rem; letter-spacing: .08em;
  display: flex; align-items: center; gap: 6px;
}

/* ================================
   SECTION LAYOUT
   ================================ */
section { padding: 110px 0; position: relative; }
.section-head { margin-bottom: 56px; max-width: 720px; }
.section-head .eyebrow { margin-bottom: 14px; }

/* ---- About ---- */
.about { background: var(--bg-2); }
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.about-visual {
  position: relative; aspect-ratio: 4/5; border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(245,200,66,0.12), transparent 60%),
    linear-gradient(45deg, var(--bg-3), var(--surface));
  border: 1px solid var(--border);
  overflow: hidden;
  display: grid; place-items: center;
}
.about-visual::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(245,200,66,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,200,66,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}
.about-visual svg {
  position: relative; width: 60%; filter: drop-shadow(0 20px 40px rgba(245,200,66,0.2));
}
.about-features {
  display: grid; gap: 20px; margin-top: 32px;
}
.about-feature {
  display: flex; gap: 18px; padding: 20px;
  background: var(--bg-3); border: 1px solid var(--border);
  border-radius: var(--radius); transition: all .3s var(--ease);
}
.about-feature:hover { border-color: var(--accent); transform: translateX(6px); }
.about-feature-icon {
  flex-shrink: 0; width: 46px; height: 46px; border-radius: 12px;
  background: rgba(245, 200, 66, 0.12); color: var(--accent);
  display: grid; place-items: center;
}
.about-feature h4 { margin-bottom: 4px; font-size: 1.05rem; }
.about-feature p { color: var(--text-dim); font-size: .92rem; margin: 0; }

/* ---- Products ---- */
.products-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.product-card {
  position: relative;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: all .4s var(--ease); cursor: pointer;
}
.product-card::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent, rgba(245,200,66,0.08));
  opacity: 0; transition: opacity .4s var(--ease); pointer-events: none;
}
.product-card:hover {
  transform: translateY(-8px);
  border-color: var(--accent);
  box-shadow: 0 30px 60px rgba(0,0,0,0.4), 0 0 0 1px var(--accent);
}
.product-card:hover::before { opacity: 1; }
.product-visual {
  position: relative;
  aspect-ratio: 4/3;
  background:
    radial-gradient(circle at 50% 40%, rgba(245,200,66,0.1), transparent 60%),
    linear-gradient(135deg, var(--bg-3), #0a0a0c);
  display: grid; place-items: center; overflow: hidden;
}
.product-visual svg {
  width: 55%; filter: drop-shadow(0 15px 30px rgba(0,0,0,0.5));
  transition: transform .5s var(--ease);
}
.product-card:hover .product-visual svg { transform: scale(1.08) rotate(-3deg); }
.product-body { padding: 26px 24px 28px; }
.product-tag {
  display: inline-block; padding: 4px 10px; border-radius: 6px;
  font-size: .7rem; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--accent);
  background: rgba(245, 200, 66, 0.1);
  margin-bottom: 12px;
}
.product-card h3 { margin-bottom: 8px; }
.product-card p { color: var(--text-dim); font-size: .95rem; margin-bottom: 18px; min-height: 48px; }
.product-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 600; color: var(--accent); font-size: .9rem;
}
.product-link svg { transition: transform .3s var(--ease); }
.product-card:hover .product-link svg { transform: translateX(4px); }

/* ---- Technology / Stats ---- */
.tech { background: var(--bg-2); }
.tech-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
}
.tech-list { display: grid; gap: 16px; margin-top: 32px; }
.tech-item {
  display: flex; gap: 20px; padding: 24px;
  background: var(--bg-3); border-radius: var(--radius); border: 1px solid var(--border);
}
.tech-item .num {
  flex-shrink: 0; font-size: 1.6rem; font-weight: 800;
  color: var(--accent); font-family: 'Inter', monospace;
  min-width: 40px;
}
.tech-item h4 { margin-bottom: 6px; }
.tech-item p { color: var(--text-dim); font-size: .95rem; }

.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.stat-card {
  padding: 36px 28px; background: var(--bg-3);
  border: 1px solid var(--border); border-radius: var(--radius);
  text-align: center; transition: all .3s var(--ease);
}
.stat-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.stat-card .num {
  font-size: 2.6rem; font-weight: 800; color: var(--accent);
  margin-bottom: 6px; letter-spacing: -0.02em;
}
.stat-card .lbl { color: var(--text-dim); font-size: .9rem; }

/* ---- Contact ---- */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1.3fr; gap: 48px;
}
.contact-info {
  display: grid; gap: 20px; align-content: start;
}
.contact-item {
  display: flex; gap: 16px; padding: 22px;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--radius);
}
.contact-item-icon {
  flex-shrink: 0; width: 44px; height: 44px; border-radius: 10px;
  background: rgba(245,200,66,0.12); color: var(--accent);
  display: grid; place-items: center;
}
.contact-item h4 { margin-bottom: 4px; font-size: 1rem; }
.contact-item p, .contact-item a { color: var(--text-dim); font-size: .95rem; }

.contact-form {
  padding: 40px; background: var(--bg-2);
  border: 1px solid var(--border); border-radius: var(--radius-lg);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block; font-size: .82rem; font-weight: 600;
  color: var(--text-dim); margin-bottom: 8px; letter-spacing: .03em;
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 14px 16px;
  background: var(--bg-3); border: 1px solid var(--border);
  border-radius: 10px; color: var(--text); font-family: inherit; font-size: .95rem;
  transition: border-color .25s var(--ease);
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--accent);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-status { margin-top: 14px; font-size: .9rem; min-height: 20px; }
.form-status.ok { color: #3ccf7a; }
.form-status.err { color: var(--danger); }

/* ---- CTA Banner ---- */
.cta-banner {
  padding: 80px 0;
  background:
    linear-gradient(135deg, rgba(245,200,66,0.1), transparent 60%),
    var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.cta-banner .container {
  display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: center;
}
.cta-banner h2 { margin-bottom: 8px; }
.cta-banner p { color: var(--text-dim); }

/* ---- Footer ---- */
.footer {
  padding: 72px 0 32px;
  background: var(--bg-2); border-top: 1px solid var(--border);
}
.footer-grid {
  display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 48px;
  margin-bottom: 48px;
}
.footer h5 {
  font-size: .9rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; margin-bottom: 20px; color: var(--text);
}
.footer-brand p { color: var(--text-dim); font-size: .92rem; margin-top: 16px; max-width: 300px; }
.footer ul { list-style: none; display: grid; gap: 10px; }
.footer ul a { color: var(--text-dim); font-size: .92rem; }
.footer ul a:hover { color: var(--accent); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 28px; border-top: 1px solid var(--border);
  color: var(--text-mute); font-size: .85rem;
}
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--bg-3); border: 1px solid var(--border);
  display: grid; place-items: center; color: var(--text-dim);
}
.footer-social a:hover { border-color: var(--accent); color: var(--accent); }

/* ================================
   PRODUCT MODAL (3D Detail)
   ================================ */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0, 0, 0, 0.82); backdrop-filter: blur(12px);
  display: none; align-items: center; justify-content: center; padding: 24px;
  opacity: 0; transition: opacity .3s var(--ease);
}
.modal-backdrop.open { display: flex; opacity: 1; }
.modal {
  width: 100%; max-width: 1100px; max-height: 90vh;
  background: var(--bg-2); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
  display: grid; grid-template-columns: 1.1fr 1fr;
  transform: scale(.96); transition: transform .3s var(--ease);
}
.modal-backdrop.open .modal { transform: scale(1); }
.modal-viewer {
  position: relative; min-height: 420px;
  background:
    radial-gradient(circle at center, rgba(245,200,66,0.12), transparent 60%),
    var(--bg-3);
}
.modal-body { padding: 40px 44px; overflow-y: auto; }
.modal-close {
  position: absolute; top: 16px; right: 16px; z-index: 5;
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(0,0,0,0.6); color: var(--text);
  display: grid; place-items: center;
}
.modal-close:hover { background: var(--accent); color: #18181a; }
.modal h2 { margin-bottom: 8px; font-size: 1.9rem; }
.modal .product-tag { margin-bottom: 16px; }
.modal-specs { margin-top: 24px; }
.modal-specs h4 { margin-bottom: 12px; font-size: 1rem; }
.modal-specs ul { list-style: none; display: grid; gap: 8px; }
.modal-specs li {
  display: flex; gap: 10px; font-size: .92rem; color: var(--text-dim);
  padding-left: 20px; position: relative;
}
.modal-specs li::before {
  content: ''; position: absolute; left: 0; top: 10px;
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent);
}

/* ================================
   REVEAL ANIMATIONS
   ================================ */
.reveal { opacity: 0; transform: translateY(30px); transition: all .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }

/* ================================
   RTL SUPPORT (Arabic)
   ================================ */
[dir="rtl"] .eyebrow::before { order: 2; }
[dir="rtl"] .about-feature:hover { transform: translateX(-6px); }
[dir="rtl"] .product-link svg { transform: scaleX(-1); }
[dir="rtl"] .product-card:hover .product-link svg { transform: scaleX(-1) translateX(4px); }
[dir="rtl"] body { font-family: 'Cairo', 'Inter', sans-serif; }

/* ================================
   RESPONSIVE
   ================================ */
@media (max-width: 960px) {
  :root { --nav-h: 68px; }
  .hero .container, .about-grid, .tech-grid, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .modal { grid-template-columns: 1fr; max-height: 94vh; overflow-y: auto; }
  .modal-viewer { min-height: 300px; }
  .cta-banner .container { grid-template-columns: 1fr; text-align: center; }
  .hero-stats { grid-template-columns: 1fr 1fr; }

  .nav-menu {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: var(--bg-2); border-bottom: 1px solid var(--border);
    flex-direction: column; align-items: stretch;
    padding: 20px; gap: 4px;
    transform: translateY(-120%); transition: transform .35s var(--ease);
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-menu a { padding: 14px 16px; }
  .nav-burger { display: flex; }
  .lang-switch { display: none; }
  .nav-menu .lang-switch-mobile {
    display: inline-flex; margin-top: 12px; align-self: start;
  }
}
@media (max-width: 600px) {
  section { padding: 80px 0; }
  .products-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .contact-form { padding: 28px; }
}