/* ============ ZENİT — Navy & Gold design system ============ */
:root {
  --navy-950: #0a1124;
  --navy-900: #0f1830;
  --navy-800: #16213e;
  --navy-700: #1e2c50;
  --navy-line: rgba(212, 175, 55, 0.16);
  --gold: #d4af37;
  --gold-light: #e8c86a;
  --gold-soft: rgba(212, 175, 55, 0.12);
  --silver: #c0c7d1;
  --text: #eaeff7;
  --muted: #97a3ba;
  --font-head: "Playfair Display", Georgia, serif;
  --font-body: "Inter", system-ui, sans-serif;
  --radius: 14px;
  --shadow: 0 18px 50px rgba(4, 8, 20, 0.55);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--navy-900);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.gold { color: var(--gold); }

/* subtle diagonal facet lines, echoing the brand posts */
.section { position: relative; padding: 110px 0; }
.section::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(115deg, transparent 49.7%, var(--navy-line) 49.9%, transparent 50.15%),
    linear-gradient(65deg, transparent 49.7%, rgba(192, 199, 209, 0.05) 49.9%, transparent 50.15%);
  background-size: 640px 640px, 900px 900px;
  background-position: top right, bottom left;
  background-repeat: no-repeat;
  pointer-events: none;
}

/* ============ Typography ============ */
h1, h2, h3 { font-family: var(--font-head); font-weight: 700; line-height: 1.18; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.7rem); }
h3 { font-size: 1.25rem; }

.eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 14px;
}
.section-head { max-width: 760px; margin-bottom: 56px; }
.section-lead { color: var(--muted); margin-top: 16px; font-size: 1.05rem; }

/* ============ Buttons ============ */
.btn {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.btn-gold {
  background: linear-gradient(135deg, var(--gold-light), var(--gold) 55%, #b8912a);
  color: #141004;
  box-shadow: 0 8px 26px rgba(212, 175, 55, 0.28);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 12px 34px rgba(212, 175, 55, 0.42); }
.btn-ghost {
  border: 1px solid rgba(212, 175, 55, 0.55);
  color: var(--gold-light);
}
.btn-ghost:hover { background: var(--gold-soft); transform: translateY(-2px); }

/* ============ Navbar ============ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 18px 0;
  transition: background 0.35s ease, padding 0.35s ease, box-shadow 0.35s ease;
}
.navbar.scrolled {
  background: rgba(10, 17, 36, 0.92);
  backdrop-filter: blur(14px);
  padding: 10px 0;
  box-shadow: 0 6px 30px rgba(4, 8, 20, 0.5);
  border-bottom: 1px solid var(--navy-line);
}
.nav-inner { display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 12px; margin-right: auto; }
.brand-mark { width: 46px; height: 46px; object-fit: contain; filter: drop-shadow(0 2px 8px rgba(212,175,55,.35)); }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name {
  font-family: var(--font-head);
  font-size: 1.35rem; font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--gold-light);
}
.brand-sub {
  font-size: 0.6rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--silver);
}
.nav-links { display: flex; gap: 26px; font-size: 0.92rem; font-weight: 500; }
.nav-links a { color: var(--silver); transition: color 0.2s; position: relative; }
.nav-links a:hover { color: var(--gold-light); }
.nav-actions { display: flex; align-items: center; gap: 14px; }
.nav-cta { padding: 10px 22px; font-size: 0.88rem; }

/* language switcher */
.lang-switch { position: relative; }
.lang-btn {
  display: flex; align-items: center; gap: 7px;
  background: rgba(22, 33, 62, 0.6);
  border: 1px solid var(--navy-line);
  color: var(--text);
  padding: 9px 14px; border-radius: 999px;
  font: 600 0.83rem var(--font-body);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.lang-btn:hover { border-color: var(--gold); }
.lang-menu {
  position: absolute; top: calc(100% + 10px); right: 0;
  min-width: 160px;
  background: var(--navy-800);
  border: 1px solid var(--navy-line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 8px;
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
}
.lang-switch.open .lang-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.lang-menu li {
  padding: 9px 14px; border-radius: 8px;
  font-size: 0.9rem; cursor: pointer; color: var(--silver);
  transition: background 0.18s, color 0.18s;
}
.lang-menu li:hover { background: var(--gold-soft); color: var(--gold-light); }
.lang-menu li.active { color: var(--gold); font-weight: 600; }

/* burger (mobile) */
.nav-burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-burger span { width: 24px; height: 2px; background: var(--gold-light); transition: transform 0.3s, opacity 0.3s; }
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 140px 0 90px;
}
.hero-media { position: absolute; inset: 0; overflow: hidden; }
.hero-img, .hero-video {
  width: 100%; height: 100%; object-fit: cover; object-position: center right;
}
.hero-video { position: absolute; inset: 0; }
.hero-video.hidden { display: none; }
.hero-overlay {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 17, 36, 0.96) 0%, rgba(10, 17, 36, 0.82) 34%, rgba(10, 17, 36, 0.28) 68%, rgba(10, 17, 36, 0.45) 100%),
    linear-gradient(0deg, rgba(15, 24, 48, 0.95) 0%, transparent 26%);
}
.hero-content { position: relative; z-index: 2; max-width: 1180px; }
.hero-title { font-size: clamp(2.3rem, 4.6vw, 3.9rem); max-width: 780px; }
.hero-sub { color: var(--silver); max-width: 620px; margin-top: 22px; font-size: 1.08rem; }
.hero-ctas { display: flex; gap: 16px; margin-top: 36px; flex-wrap: wrap; }
.hero-chips { display: flex; gap: 10px; margin-top: 46px; flex-wrap: wrap; }
.chip {
  padding: 8px 18px;
  border: 1px solid var(--navy-line);
  border-radius: 999px;
  background: rgba(22, 33, 62, 0.55);
  backdrop-filter: blur(6px);
  font-size: 0.83rem; font-weight: 500; color: var(--silver);
}

/* ============ Problem ============ */
.problem { background: var(--navy-950); }
.problem-grid {
  display: grid; grid-template-columns: 1.1fr 0.9fr;
  gap: 56px; align-items: center;
}
.p-card {
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap;
  background: linear-gradient(135deg, var(--navy-800), var(--navy-900));
  border: 1px solid var(--navy-line);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  padding: 22px 28px;
  margin-bottom: 16px;
}
.p-have { font-family: var(--font-head); font-size: 1.35rem; font-weight: 700; }
.p-but { font-size: 1.1rem; font-weight: 500; }
.problem-after { margin-top: 26px; color: var(--text); }
.problem-note { margin-top: 14px; color: var(--muted); font-size: 0.96rem; }
.problem-visual img {
  border-radius: var(--radius);
  border: 1px solid var(--navy-line);
  box-shadow: var(--shadow);
}
.problem-visual figcaption {
  margin-top: 14px; text-align: center;
  color: var(--muted); font-size: 0.88rem; font-style: italic;
}
.punchline {
  margin-top: 72px;
  border: 1px solid var(--navy-line);
  border-radius: var(--radius);
  background:
    radial-gradient(ellipse at top left, var(--gold-soft), transparent 55%),
    var(--navy-800);
  padding: 44px 48px;
  text-align: center;
}
.punchline p {
  font-family: var(--font-head);
  font-size: clamp(1.2rem, 2.2vw, 1.6rem);
  font-weight: 600;
  color: var(--gold-light);
  max-width: 900px; margin: 0 auto;
}

/* ============ Questions ============ */
.q-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.q-card {
  background: linear-gradient(160deg, var(--navy-800), var(--navy-900));
  border: 1px solid var(--navy-line);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.q-card:hover { transform: translateY(-6px); border-color: rgba(212, 175, 55, 0.45); }
.q-num {
  font-family: var(--font-head);
  font-size: 2rem; font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 1px var(--gold);
  display: block; margin-bottom: 14px;
}
.q-card p { font-weight: 500; font-size: 1.02rem; }

/* ============ Services ============ */
.services { background: var(--navy-950); }
.s-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.s-card {
  background: linear-gradient(160deg, var(--navy-800), var(--navy-900));
  border: 1px solid var(--navy-line);
  border-radius: var(--radius);
  padding: 34px 30px;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.s-card:hover {
  transform: translateY(-6px);
  border-color: rgba(212, 175, 55, 0.45);
  box-shadow: var(--shadow);
}
.s-icon {
  width: 52px; height: 52px;
  display: grid; place-items: center;
  border-radius: 13px;
  background: var(--gold-soft);
  border: 1px solid rgba(212, 175, 55, 0.35);
  color: var(--gold-light);
  margin-bottom: 20px;
}
.s-icon svg { width: 26px; height: 26px; }
.s-card h3 { margin-bottom: 10px; color: var(--gold-light); }
.s-card p { color: var(--muted); font-size: 0.94rem; }
.services-visual { margin-top: 64px; text-align: center; }
.services-visual img {
  max-width: 620px; width: 100%; margin: 0 auto;
  border-radius: var(--radius);
  border: 1px solid var(--navy-line);
  box-shadow: var(--shadow);
}
.services-visual figcaption { margin-top: 14px; color: var(--muted); font-size: 0.88rem; font-style: italic; }

/* ============ Expertise ============ */
.e-block {
  display: grid; grid-template-columns: 1.15fr 0.85fr;
  gap: 60px; align-items: center;
  padding: 56px 0;
  border-top: 1px solid var(--navy-line);
}
.e-block:first-of-type { border-top: none; }
.e-block-rev .e-text { order: 2; }
.e-block-rev .e-visual { order: 1; }
.e-tag {
  display: inline-block;
  font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--gold);
  border: 1px solid rgba(212, 175, 55, 0.4);
  border-radius: 999px;
  padding: 6px 16px;
  margin-bottom: 18px;
}
.e-block h3 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); margin-bottom: 16px; }
.e-block p { color: var(--muted); margin-bottom: 24px; }
.check-list li {
  position: relative;
  padding: 9px 0 9px 38px;
  font-size: 0.97rem;
}
.check-list li::before {
  content: "";
  position: absolute; left: 0; top: 11px;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--gold-soft);
  border: 1px solid rgba(212, 175, 55, 0.5);
}
.check-list li::after {
  content: "";
  position: absolute; left: 6px; top: 16px;
  width: 9px; height: 5px;
  border-left: 2px solid var(--gold-light);
  border-bottom: 2px solid var(--gold-light);
  transform: rotate(-45deg);
}
.e-visual img {
  border-radius: var(--radius);
  border: 1px solid var(--navy-line);
  box-shadow: var(--shadow);
}

/* ============ Approach ============ */
.approach { background: var(--navy-950); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.step {
  position: relative;
  background: linear-gradient(160deg, var(--navy-800), var(--navy-900));
  border: 1px solid var(--navy-line);
  border-radius: var(--radius);
  padding: 36px 28px 30px;
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.step:hover { transform: translateY(-6px); border-color: rgba(212, 175, 55, 0.45); }
.step-num {
  position: absolute; top: -20px; left: 26px;
  width: 40px; height: 40px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: #141004;
  font-weight: 700; font-size: 1.05rem;
  box-shadow: 0 6px 18px rgba(212, 175, 55, 0.35);
}
.step h3 { color: var(--gold-light); margin: 8px 0 10px; }
.step p { color: var(--muted); font-size: 0.93rem; }

/* ============ Contact ============ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: start; }
.contact-info {
  margin-top: 36px;
  border: 1px solid var(--navy-line);
  border-radius: var(--radius);
  background: var(--gold-soft);
  padding: 26px 30px;
}
.contact-info h3 { color: var(--gold-light); margin-bottom: 8px; }
.contact-info p { color: var(--silver); font-size: 0.95rem; }
.contact-form { display: flex; flex-direction: column; gap: 18px; }
.contact-form label { display: flex; flex-direction: column; gap: 7px; font-size: 0.88rem; font-weight: 500; color: var(--silver); }
.contact-form input,
.contact-form textarea {
  background: rgba(22, 33, 62, 0.65);
  border: 1px solid var(--navy-line);
  border-radius: 10px;
  color: var(--text);
  padding: 13px 16px;
  font: 400 0.96rem var(--font-body);
  transition: border-color 0.2s;
  resize: vertical;
}
.contact-form input:focus,
.contact-form textarea:focus { outline: none; border-color: var(--gold); }
.contact-form .btn { align-self: flex-start; margin-top: 6px; }
.form-ok { color: var(--gold-light); font-size: 0.9rem; }

/* ============ Footer ============ */
.footer {
  border-top: 1px solid var(--navy-line);
  background: var(--navy-950);
  padding: 54px 0 40px;
}
.footer-inner { display: flex; flex-direction: column; gap: 26px; align-items: center; text-align: center; }
.footer-brand { display: flex; align-items: center; gap: 16px; text-align: left; }
.footer-tagline { color: var(--muted); font-size: 0.9rem; max-width: 460px; }
.footer-nav { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; font-size: 0.9rem; }
.footer-nav a { color: var(--silver); transition: color 0.2s; }
.footer-nav a:hover { color: var(--gold-light); }
.footer-copy { color: var(--muted); font-size: 0.82rem; }

/* ============ Figure videos (animated section visuals) ============ */
.media-wrap { display: block; position: relative; }
.services-visual .media-wrap { max-width: 620px; margin: 0 auto; }
.fig-video {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--navy-line);
}
video.hidden { display: none; }

/* ============ Reveal animation ============ */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ============ Responsive ============ */
@media (max-width: 1020px) {
  .q-grid { grid-template-columns: repeat(2, 1fr); }
  .s-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
  .problem-grid, .e-block { grid-template-columns: 1fr; gap: 36px; }
  .e-block-rev .e-text { order: 1; }
  .e-block-rev .e-visual { order: 2; }
  .contact-grid { grid-template-columns: 1fr; gap: 46px; }
}
@media (max-width: 780px) {
  .section { padding: 80px 0; }
  .nav-links {
    position: fixed; top: 64px; left: 0; right: 0;
    background: rgba(10, 17, 36, 0.98);
    backdrop-filter: blur(14px);
    flex-direction: column; gap: 0;
    padding: 10px 24px 20px;
    border-bottom: 1px solid var(--navy-line);
    transform: translateY(-130%);
    transition: transform 0.35s ease;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 13px 0; border-bottom: 1px solid rgba(212, 175, 55, 0.08); }
  .nav-burger { display: flex; }
  .nav-cta { display: none; }
  .brand-sub { display: none; }
  .s-grid, .q-grid, .steps { grid-template-columns: 1fr; }
  .hero { padding-top: 120px; }
  .hero-img { object-position: 72% center; }
  .punchline { padding: 32px 24px; }
}