:root {
  --bg: #06131d;
  --bg-2: #0a1d2a;
  --panel: #0d2635;
  --line: #1d4254;
  --text: #eef7fb;
  --muted: #b6c8d0;
  --blue: #00a8e8;
  --green: #36d66b;
  --orange: #ff9f1c;
  --shadow: 0 18px 50px rgba(0, 0, 0, .32);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  overflow-x: hidden;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(6, 19, 29, .94);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  backdrop-filter: blur(14px);
}

.topbar {
  display: flex;
  gap: 22px;
  align-items: center;
  justify-content: flex-end;
  max-width: 1180px;
  margin: 0 auto;
  padding: 7px 20px;
  color: var(--muted);
  font-size: 13px;
}

.nav {
  max-width: 1180px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 285px;
}

.brand-logo { width: min(250px, 64vw); height: auto; display: block; }

.brand strong {
  display: block;
  font-size: 22px;
  letter-spacing: 0;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.nav-links {
  display: flex;
  gap: 18px;
  margin-left: auto;
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
}

.nav-links a:hover { color: var(--blue); }

.nav-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border: 1px solid var(--blue);
  background: rgba(0, 168, 232, .12);
  color: var(--text);
  font-weight: 700;
  white-space: nowrap;
}

.btn.primary,
.nav-cta {
  background: var(--blue);
  color: #021018;
}

.btn.secondary {
  border-color: rgba(255,255,255,.28);
  background: rgba(255,255,255,.08);
}

.menu-toggle {
  display: none;
  margin-left: auto;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  font-size: 22px;
}

.hero {
  position: relative;
  min-height: 690px;
  display: grid;
  align-items: end;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(6,19,29,.96), rgba(6,19,29,.72) 45%, rgba(6,19,29,.38)),
    linear-gradient(0deg, rgba(6,19,29,1), rgba(6,19,29,0) 28%),
    url("images/hero-tufan-telekom.png") center/cover;
}

.hero-content {
  position: relative;
  max-width: 1180px;
  width: 100%;
  margin: 0 auto;
  padding: 110px 20px 82px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--blue);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 13px;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  margin-bottom: 18px;
  max-width: 780px;
  font-size: clamp(48px, 8vw, 96px);
  line-height: .95;
  letter-spacing: 0;
}

h2 {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.08;
  letter-spacing: 0;
  margin-bottom: 16px;
}

h3 {
  font-size: 21px;
  margin-bottom: 8px;
}

.lead {
  max-width: 650px;
  color: #dceaf0;
  font-size: 20px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 26px;
}

.hero-stats {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 42px;
}

.hero-stats span,
.trust div,
.service-card,
.steps div,
.contact-card,
details {
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(10, 29, 42, .88);
  box-shadow: var(--shadow);
}

.hero-stats span {
  min-width: 165px;
  padding: 14px 16px;
  color: var(--muted);
}

.hero-stats strong {
  display: block;
  color: var(--text);
}

.strip,
.section,
.contact,
.footer {
  max-width: 1180px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
}

.trust {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding-top: 28px;
}

.trust div { padding: 18px; }
.trust strong { display: block; color: var(--text); }
.trust span { color: var(--muted); font-size: 14px; }

.section { padding-top: 90px; }

.section-head {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-head p,
.split p,
.faq p,
.contact p {
  color: var(--muted);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.service-card {
  overflow: hidden;
  min-height: 360px;
}

.service-card img {
  width: 100%;
  height: 190px;
  object-fit: cover;
}

.service-card div {
  padding: 20px;
}

.service-card p { color: var(--muted); margin-bottom: 0; }

.text-link {
  display: inline-flex;
  margin-top: 14px;
  color: var(--blue);
  font-weight: 800;
}

.info-grid,
.check-grid,
.why-grid,
.project-grid {
  display: grid;
  gap: 16px;
}

.info-grid {
  grid-template-columns: repeat(3, 1fr);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.info-grid article,
.check-grid div,
.why-grid div,
.about-grid .content-panel,
.content-panel {
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(10, 29, 42, .88);
  padding: 22px;
  box-shadow: var(--shadow);
}

.info-grid p,
.check-grid span,
.why-grid p,
.content-panel p,
.content-panel li {
  color: var(--muted);
}

.check-grid {
  grid-template-columns: repeat(3, 1fr);
}

.check-grid strong {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
}

.why-grid {
  grid-template-columns: repeat(4, 1fr);
}

.why-grid strong {
  display: block;
  color: var(--blue);
  margin-bottom: 8px;
}

.project-grid {
  grid-template-columns: 1.2fr .8fr;
}

.project-card {
  position: relative;
  min-height: 280px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.12);
  background: var(--panel);
}

.project-card.large {
  grid-row: span 2;
}

.project-card img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
}

.project-card div {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 22px;
  background: linear-gradient(0deg, rgba(6,19,29,.96), rgba(6,19,29,.08));
}

.project-card span {
  color: var(--blue);
  font-weight: 800;
  font-size: 13px;
}

.project-card p {
  color: var(--muted);
  margin-bottom: 0;
}

.cta-band {
  max-width: 1180px;
  margin: 90px auto 0;
  padding: 34px 20px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 22px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.cta-band p {
  color: var(--muted);
  margin-bottom: 0;
}

.page-hero {
  max-width: 1180px;
  margin: 0 auto;
  padding: 90px 20px 50px;
}

.page-hero h1 {
  max-width: 900px;
  font-size: clamp(42px, 6vw, 72px);
}

.content-layout {
  max-width: 1180px;
  margin: 0 auto;
  padding: 30px 20px 80px;
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 24px;
  align-items: start;
}

.content-panel ul {
  padding-left: 20px;
}

.side-cta {
  position: sticky;
  top: 120px;
}

.split {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 36px;
  align-items: start;
}

.steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.steps div { padding: 20px; }
.steps span { color: var(--orange); font-weight: 900; }
.steps strong { display: block; font-size: 20px; margin: 7px 0; }
.steps p { margin: 0; color: var(--muted); }

.dark {
  max-width: none;
  margin-top: 90px;
  padding-top: 80px;
  padding-bottom: 80px;
  background:
    linear-gradient(rgba(6,19,29,.86), rgba(6,19,29,.92)),
    url("images/service-network-fiber.png") center/cover;
}

.dark .section-head,
.dark .areas {
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
}

.areas {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.areas span {
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.08);
  padding: 10px 16px;
  font-weight: 700;
}

.faq {
  max-width: 900px;
}

details {
  padding: 18px 20px;
  margin-bottom: 12px;
}

summary {
  cursor: pointer;
  font-weight: 800;
}

details p {
  margin: 12px 0 0;
}

.contact {
  margin-top: 90px;
  margin-bottom: 70px;
  padding-top: 42px;
  padding-bottom: 42px;
  display: grid;
  grid-template-columns: 1fr 410px;
  gap: 28px;
  align-items: center;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.contact-card {
  display: grid;
  gap: 12px;
  padding: 24px;
}

.contact-card a:not(.btn) {
  color: var(--blue);
  font-weight: 800;
}

.contact-card span {
  color: var(--muted);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 24px;
  padding-bottom: 34px;
  color: var(--muted);
  border-top: 1px solid rgba(255,255,255,.08);
}

.footer strong { color: var(--text); }

.floating-whatsapp {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 40;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  padding: 0 18px;
  background: var(--green);
  color: #04120a;
  font-weight: 900;
  box-shadow: var(--shadow);
}

@media (max-width: 940px) {
  .topbar { justify-content: flex-start; flex-wrap: wrap; gap: 10px; }
  .nav { flex-wrap: wrap; }
  .brand { min-width: 0; }
  .menu-toggle { display: inline-grid; place-items: center; }
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    margin-left: 0;
    padding: 12px 0;
  }
  .nav-links.open { display: flex; }
  .nav-cta { margin-left: 0; }
  .hero { min-height: 620px; }
  .hero-media {
    background-position: 64% center;
  }
  .trust,
  .service-grid,
  .info-grid,
  .about-grid,
  .check-grid,
  .why-grid,
  .project-grid,
  .split,
  .cta-band,
  .content-layout,
  .contact {
    grid-template-columns: 1fr;
  }
  .project-card.large {
    grid-row: auto;
  }
  .side-cta {
    position: static;
  }
  .contact { margin-top: 60px; }
}

@media (max-width: 620px) {
  .topbar { font-size: 12px; }
  .topbar a, .topbar span { overflow-wrap: anywhere; }
  .nav { gap: 12px; padding: 10px 14px; }
  .brand-logo { width: min(210px, 68vw); }
  .hero { min-height: 560px; }
  .hero-media {
    background-position: 70% center;
  }
  .hero-content { padding: 78px 16px 50px; }
  h1 { font-size: clamp(38px, 14vw, 58px); }
  h2 { font-size: clamp(26px, 9vw, 38px); }
  .lead { font-size: 17px; }
  .btn, .nav-cta { width: 100%; }
  .hero-stats span { width: 100%; }
  .strip,
  .section,
  .contact,
  .footer,
  .page-hero,
  .content-layout,
  .cta-band {
    padding-left: 16px;
    padding-right: 16px;
  }
  .section { padding-top: 62px; }
  .service-card { min-height: 0; }
  .service-card img { height: 165px; }
  .project-card img { min-height: 245px; }
  .project-card div { padding: 18px; }
  .content-panel { padding: 18px; }
  .steps { grid-template-columns: 1fr; }
  .footer { flex-direction: column; }
  .floating-whatsapp {
    left: 18px;
    justify-content: center;
  }
}

@media (max-width: 380px) {
  .brand-logo { width: 180px; }
  .menu-toggle { width: 38px; height: 38px; }
  .hero-content { padding-top: 62px; }
  h1 { font-size: 34px; }
}