/* ============================================================
   OZARC Welding Technologies — Kurumsal Site
   Marka: lacivert / tech / mavi ark vurgusu
   ============================================================ */

:root {
  --navy-900: #060b1a;
  --navy-800: #0a1228;
  --navy-700: #0f1c3a;
  --navy-600: #15294f;
  --line: rgba(120, 160, 230, 0.14);
  --blue: #2f7bff;
  --blue-bright: #4aa3ff;
  --cyan: #5fd2ff;
  --steel: #9fb2d4;
  --text: #e8eefc;
  --text-dim: #9aa9c6;
  --white: #ffffff;
  --radius: 14px;
  --maxw: 1200px;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.6);
  --grad-blue: linear-gradient(135deg, #2f7bff 0%, #5fd2ff 100%);
  --font: "Segoe UI", "Inter", system-ui, -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--navy-900);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

section { position: relative; }

/* ---------- Typografi ---------- */
h1, h2, h3, h4 { font-weight: 800; letter-spacing: -0.02em; line-height: 1.15; color: var(--white); }
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.7rem, 3.5vw, 2.6rem); }
h3 { font-size: 1.25rem; }
p { color: var(--text-dim); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.78rem; font-weight: 700; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--blue-bright);
  padding: 7px 14px; border: 1px solid var(--line);
  border-radius: 100px; background: rgba(47, 123, 255, 0.08);
}
.eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }

.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head p { margin-top: 16px; font-size: 1.08rem; }

.text-grad { background: var(--grad-blue); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px 26px; border-radius: 100px; font-weight: 700; font-size: 0.95rem;
  cursor: pointer; border: 1px solid transparent; transition: transform .2s, box-shadow .2s, background .2s;
}
.btn-primary { background: var(--grad-blue); color: #04122e; box-shadow: 0 12px 30px -10px rgba(47, 123, 255, 0.7); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 40px -10px rgba(47, 123, 255, 0.9); }
.btn-ghost { border-color: var(--line); color: var(--text); background: rgba(255,255,255,0.02); }
.btn-ghost:hover { border-color: var(--blue); background: rgba(47, 123, 255, 0.1); transform: translateY(-2px); }

/* ---------- Hexagon background ---------- */
.hex-bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: 0.5;
  background-image:
    radial-gradient(circle at 80% 10%, rgba(47, 123, 255, 0.18), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(95, 210, 255, 0.10), transparent 40%);
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(6, 11, 26, 0.7);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 40px; width: auto; }
.brand-text { font-weight: 800; font-size: 1.15rem; letter-spacing: 0.04em; }
.brand-text span { color: var(--blue-bright); }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  padding: 10px 16px; border-radius: 8px; font-size: 0.95rem; font-weight: 600;
  color: var(--text-dim); transition: color .2s, background .2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--white); background: rgba(255,255,255,0.05); }
.nav-cta { margin-left: 14px; }
.nav-toggle { display: none; background: none; border: 0; color: var(--white); cursor: pointer; }
.nav-toggle svg { width: 28px; height: 28px; }

/* ============================================================
   HERO
   ============================================================ */
.hero { padding: 90px 0 100px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 50px; align-items: center; }
.hero h1 { margin: 20px 0; }
.hero-lead { font-size: 1.18rem; max-width: 540px; }
.hero-actions { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 36px; margin-top: 48px; flex-wrap: wrap; }
.hero-stat .num { font-size: 2rem; font-weight: 800; color: var(--white); }
.hero-stat .num span { color: var(--blue-bright); }
.hero-stat .lbl { font-size: 0.85rem; color: var(--text-dim); }

.hero-visual { position: relative; }
.hero-card {
  position: relative; z-index: 2; border-radius: 20px; padding: 6px;
  background: linear-gradient(160deg, rgba(47,123,255,0.4), rgba(95,210,255,0.05));
  box-shadow: var(--shadow);
}
.hero-card img { border-radius: 16px; }
.hero-glow { position: absolute; inset: -40px; background: radial-gradient(circle, rgba(47,123,255,0.35), transparent 65%); filter: blur(30px); z-index: 1; }

/* trust strip */
.trust { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--navy-800); }
.trust-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 22px 0; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 12px; color: var(--text-dim); font-weight: 600; font-size: 0.95rem; }
.trust-item svg { width: 22px; height: 22px; color: var(--blue-bright); flex: none; }

/* ============================================================
   FEATURES
   ============================================================ */
.section-pad { padding: 100px 0; }
.bg-alt { background: var(--navy-800); }

.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feature-card {
  background: linear-gradient(180deg, var(--navy-700), var(--navy-800));
  border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 26px;
  transition: transform .25s, border-color .25s;
}
.feature-card:hover { transform: translateY(-6px); border-color: var(--blue); }
.feature-icon {
  width: 54px; height: 54px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(47, 123, 255, 0.12); border: 1px solid var(--line); margin-bottom: 20px;
}
.feature-icon svg { width: 28px; height: 28px; color: var(--blue-bright); }
.feature-card h3 { margin-bottom: 8px; }
.feature-card p { font-size: 0.95rem; }

/* ============================================================
   PRODUCTS
   ============================================================ */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.product-card {
  background: var(--navy-800); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform .25s, border-color .25s; display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-6px); border-color: var(--blue); }
.product-media {
  height: 200px; display: grid; place-items: center; position: relative;
  background:
    radial-gradient(circle at 50% 40%, rgba(47,123,255,0.25), transparent 60%),
    linear-gradient(160deg, var(--navy-700), var(--navy-900));
  border-bottom: 1px solid var(--line);
}
.product-media .spool {
  width: 120px; height: 120px; border-radius: 50%;
  background: conic-gradient(from 0deg, #1b2a4d, #3a5da0, #1b2a4d, #3a5da0, #1b2a4d);
  border: 6px solid #0c1530; position: relative; box-shadow: 0 0 40px rgba(47,123,255,0.4);
}
.product-media .spool::after { content: ""; position: absolute; inset: 32px; border-radius: 50%; background: var(--navy-900); border: 3px solid #24375f; }
.product-tag {
  position: absolute; top: 14px; left: 14px; font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; padding: 5px 12px; border-radius: 100px;
  background: rgba(47,123,255,0.18); border: 1px solid var(--line); color: var(--blue-bright);
}
.product-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.product-body h3 { margin-bottom: 6px; }
.product-code { font-size: 0.82rem; color: var(--cyan); font-weight: 700; letter-spacing: 0.05em; margin-bottom: 12px; }
.product-body p { font-size: 0.93rem; flex: 1; }
.product-specs { list-style: none; margin: 16px 0; display: flex; flex-wrap: wrap; gap: 8px; }
.product-specs li { font-size: 0.78rem; padding: 5px 11px; border-radius: 8px; background: rgba(255,255,255,0.04); border: 1px solid var(--line); color: var(--steel); }
.product-link { font-weight: 700; color: var(--blue-bright); display: inline-flex; align-items: center; gap: 6px; margin-top: auto; }
.product-link svg { width: 16px; height: 16px; transition: transform .2s; }
.product-card:hover .product-link svg { transform: translateX(4px); }

/* filter chips */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
.chip {
  padding: 9px 18px; border-radius: 100px; border: 1px solid var(--line);
  background: rgba(255,255,255,0.02); color: var(--text-dim); font-weight: 600; font-size: 0.9rem; cursor: pointer; transition: all .2s;
}
.chip:hover { color: var(--white); border-color: var(--blue); }
.chip.active { background: var(--grad-blue); color: #04122e; border-color: transparent; }

/* ============================================================
   TECH / PROCESS
   ============================================================ */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.process-steps { counter-reset: step; display: grid; gap: 22px; }
.process-step { display: flex; gap: 20px; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--navy-800); }
.process-step .num {
  flex: none; width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  font-weight: 800; font-size: 1.1rem; color: #04122e; background: var(--grad-blue);
}
.process-step h3 { font-size: 1.1rem; margin-bottom: 4px; }
.process-step p { font-size: 0.93rem; }

.visual-panel {
  border-radius: 20px; padding: 40px; border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--navy-700), var(--navy-900)); box-shadow: var(--shadow);
}
.metric-row { display: flex; justify-content: space-between; align-items: baseline; padding: 16px 0; border-bottom: 1px solid var(--line); }
.metric-row:last-child { border-bottom: 0; }
.metric-row .label { color: var(--text-dim); font-weight: 600; }
.metric-row .value { font-size: 1.6rem; font-weight: 800; color: var(--white); }
.metric-row .value span { font-size: 0.9rem; color: var(--blue-bright); }
.bar { height: 8px; border-radius: 100px; background: rgba(255,255,255,0.06); overflow: hidden; margin-top: 6px; }
.bar > i { display: block; height: 100%; background: var(--grad-blue); border-radius: 100px; }

/* ============================================================
   CTA band
   ============================================================ */
.cta-band {
  border-radius: 24px; padding: 60px; text-align: center; position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--navy-600), var(--navy-800));
  border: 1px solid var(--line);
}
.cta-band h2 { margin-bottom: 16px; }
.cta-band p { max-width: 560px; margin: 0 auto 30px; font-size: 1.1rem; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ============================================================
   PAGE HERO (inner pages)
   ============================================================ */
.page-hero { padding: 70px 0 50px; text-align: center; position: relative; }
.page-hero p { max-width: 640px; margin: 18px auto 0; font-size: 1.1rem; }
.breadcrumb { font-size: 0.85rem; color: var(--text-dim); margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--blue-bright); }

/* ---------- about / values ---------- */
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value-card { padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--navy-800); }
.value-card h3 { margin-bottom: 10px; }
.value-card .vnum { font-size: 0.85rem; font-weight: 800; color: var(--blue-bright); letter-spacing: 0.1em; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.contact-info { display: grid; gap: 22px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-item .ico { width: 46px; height: 46px; flex: none; border-radius: 12px; display: grid; place-items: center; background: rgba(47,123,255,0.12); border: 1px solid var(--line); }
.contact-item .ico svg { width: 22px; height: 22px; color: var(--blue-bright); }
.contact-item h4 { color: var(--white); margin-bottom: 2px; }
.contact-item p { font-size: 0.95rem; }
.form { display: grid; gap: 16px; background: var(--navy-800); padding: 32px; border-radius: var(--radius); border: 1px solid var(--line); }
.form label { font-size: 0.85rem; font-weight: 600; color: var(--steel); display: block; margin-bottom: 6px; }
.form input, .form textarea, .form select {
  width: 100%; padding: 13px 15px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--navy-900); color: var(--text); font-family: inherit; font-size: 0.95rem;
}
.form input:focus, .form textarea:focus, .form select:focus { outline: none; border-color: var(--blue); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { background: var(--navy-900); border-top: 1px solid var(--line); padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-grid h4 { font-size: 0.85rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--steel); margin-bottom: 18px; }
.footer-grid ul { list-style: none; display: grid; gap: 10px; }
.footer-grid a { color: var(--text-dim); font-size: 0.95rem; }
.footer-grid a:hover { color: var(--blue-bright); }
.footer-brand img { height: 42px; margin-bottom: 16px; }
.footer-brand p { font-size: 0.95rem; max-width: 320px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 28px; border-top: 1px solid var(--line); flex-wrap: wrap; gap: 12px; }
.footer-bottom p { font-size: 0.85rem; }
.footer-tags { display: flex; gap: 18px; font-size: 0.8rem; letter-spacing: 0.15em; text-transform: uppercase; color: var(--steel); font-weight: 700; }

/* ============================================================
   ANIMATIONS
   ============================================================ */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 980px) {
  .hero-grid, .split, .contact-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .value-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute; top: 74px; left: 0; right: 0;
    background: var(--navy-800); border-bottom: 1px solid var(--line); padding: 16px; gap: 6px;
  }
  .nav-links.open a { width: 100%; }
  .nav-toggle { display: block; }
  .nav-cta { display: none; }
  .feature-grid, .product-grid, .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .section-pad { padding: 64px 0; }
  .cta-band { padding: 40px 24px; }
}