/* ============ Tokens ============ */
:root {
  --bg: #0c0f14;
  --bg-soft: #11151c;
  --surface: #161b24;
  --surface-2: #1c2430;
  --line: rgba(255, 255, 255, 0.08);
  --text: #eef2f7;
  --muted: #9aa6b5;
  --accent: #f5a623;      /* construction amber */
  --accent-2: #ffce6b;
  --accent-ink: #1a1205;
  --radius: 16px;
  --radius-sm: 10px;
  --max: 1180px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.7);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4, .logo__text {
  font-family: "Space Grotesk", "Inter", sans-serif;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

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

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

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 18px;
}

/* ============ Buttons ============ */
.btn {
  --b: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border: var(--b);
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s;
  white-space: nowrap;
}
.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--accent-ink);
  box-shadow: 0 10px 30px -10px rgba(245, 166, 35, 0.6);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px -10px rgba(245, 166, 35, 0.75); }
.btn--ghost { border: 1px solid var(--line); color: var(--text); background: rgba(255,255,255,0.02); }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn--sm { padding: 10px 18px; font-size: 0.85rem; }
.btn--block { width: 100%; }

/* ============ Header ============ */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.header.is-scrolled {
  background: rgba(12, 15, 20, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.header__inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }

.logo { display: inline-flex; align-items: center; }
/* Logo: şeffaf arka planlı, koyu temaya uygun (beyaz + altın) sürüm */
.logo__img {
  display: block;
  height: 46px;
  width: auto;
  transition: transform 0.25s var(--ease);
}
.logo:hover .logo__img { transform: translateY(-2px); }
.logo--footer .logo__img { height: 54px; }

/* Eski metin logosu (footer telif vb. için yedek) */
.logo__text { font-family: "Space Grotesk", sans-serif; font-weight: 600; font-size: 1.25rem; letter-spacing: 0.02em; }
.logo__text span { color: var(--accent); }

.nav { display: flex; gap: 32px; }
.nav a { font-size: 0.95rem; color: var(--muted); font-weight: 500; transition: color 0.2s; position: relative; }
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 2px; width: 0;
  background: var(--accent); transition: width 0.25s var(--ease);
}
.nav a:hover { color: var(--text); }
.nav a:hover::after { width: 100%; }

.header__actions { display: flex; align-items: center; gap: 18px; }
.lang { display: flex; align-items: center; gap: 6px; }
.lang__btn {
  background: none; border: none; color: var(--muted); font-weight: 600;
  font-size: 0.9rem; cursor: pointer; padding: 4px; transition: color 0.2s;
}
.lang__btn.is-active { color: var(--accent); }
.lang__btn:hover { color: var(--text); }
.lang__sep { color: var(--line); }

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

/* ============ Hero ============ */
.hero { position: relative; padding: 168px 0 90px; overflow: hidden; }
.hero__bg {
  position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(1100px 520px at 78% -10%, rgba(245, 166, 35, 0.18), transparent 60%),
    radial-gradient(800px 420px at 8% 12%, rgba(70, 110, 180, 0.16), transparent 60%),
    var(--bg);
}
.hero__grid {
  position: absolute; inset: 0; z-index: -1;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at 60% 30%, #000 0%, transparent 72%);
  opacity: 0.6;
}
.hero__inner { max-width: 880px; }
.hero__title { font-size: clamp(2.4rem, 6vw, 4.4rem); margin-bottom: 22px; }
.hero__sub { font-size: clamp(1.05rem, 2vw, 1.3rem); color: var(--muted); max-width: 620px; margin-bottom: 36px; }
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; }

.hero__stats { display: flex; gap: 48px; margin-top: 64px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; }
.stat__num { font-family: "Space Grotesk"; font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 700; line-height: 1; }
.stat__plus { display: inline; font-family: "Space Grotesk"; font-size: 1.4rem; font-weight: 700; color: var(--accent); }
.stat__num + .stat__plus { margin-left: 2px; }
.stat__label { font-size: 0.9rem; color: var(--muted); margin-top: 8px; }
.stat__plus { order: 0; }
.stat { position: relative; }
.stat__label { order: 3; flex-basis: 100%; }

/* ============ Trust ============ */
.trust { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-soft); }
.trust__inner { display: flex; align-items: center; gap: 32px; padding: 22px 24px; flex-wrap: wrap; }
.trust__inner > span { color: var(--muted); font-size: 0.85rem; letter-spacing: 0.05em; }
.trust__logos { display: flex; gap: 30px; flex-wrap: wrap; }
.trust__logos span {
  font-family: "Space Grotesk"; font-weight: 600; color: var(--text);
  opacity: 0.55; letter-spacing: 0.08em; font-size: 0.95rem; transition: opacity 0.2s;
}
.trust__logos span:hover { opacity: 1; }

/* ============ Sections ============ */
.section { padding: 100px 0; }
.section--alt { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section__head { max-width: 680px; margin-bottom: 56px; }
.section__title { font-size: clamp(1.8rem, 4vw, 2.8rem); margin-bottom: 18px; }
.section__lead { color: var(--muted); font-size: 1.08rem; }

/* ============ Cards / Services ============ */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform 0.3s var(--ease), border-color 0.3s, background 0.3s;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0); transform-origin: left; transition: transform 0.35s var(--ease);
}
.card:hover { transform: translateY(-6px); border-color: rgba(245,166,35,0.4); background: var(--surface-2); }
.card:hover::before { transform: scaleX(1); }
.card__icon {
  width: 56px; height: 56px; display: grid; place-items: center;
  font-size: 1.6rem; border-radius: 14px; margin-bottom: 20px;
  background: rgba(245, 166, 35, 0.12); border: 1px solid rgba(245,166,35,0.22);
}
.card h3 { font-size: 1.22rem; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 0.97rem; }

/* ============ Steps / Process ============ */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.step {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; position: relative;
}
.step__num {
  font-family: "Space Grotesk"; font-size: 2.6rem; font-weight: 700;
  color: transparent; -webkit-text-stroke: 1.5px rgba(245,166,35,0.55);
  display: block; margin-bottom: 16px;
}
.step h3 { font-size: 1.15rem; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 0.95rem; }

/* ============ Projects ============ */
.projects { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.project {
  position: relative; height: 320px; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); display: flex; align-items: flex-end;
  isolation: isolate;
}
.project::before {
  content: ""; position: absolute; inset: 0; z-index: -2;
  background-image: var(--img); background-size: cover; background-position: center;
  transition: transform 0.6s var(--ease); filter: saturate(0.9);
}
.project::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(to top, rgba(8,10,14,0.92) 8%, rgba(8,10,14,0.25) 60%, transparent);
}
.project:hover::before { transform: scale(1.07); }
.project__body { padding: 28px; }
.project__tag {
  display: inline-block; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--accent-ink); background: var(--accent);
  padding: 5px 12px; border-radius: 999px; margin-bottom: 12px;
}
.project h3 { font-size: 1.4rem; margin-bottom: 6px; }
.project p { color: #cdd6e2; font-size: 0.95rem; }

/* ============ About ============ */
.about { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 56px; align-items: center; }
.about__text p { color: var(--muted); margin-bottom: 16px; }
.about__list { list-style: none; margin-top: 24px; display: grid; gap: 12px; }
.about__list li { position: relative; padding-left: 30px; color: var(--text); }
.about__list li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--accent-ink); background: var(--accent); width: 20px; height: 20px;
  border-radius: 6px; display: grid; place-items: center; font-size: 0.75rem; font-weight: 700;
}
.about__panel { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.about__card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 22px; display: flex; flex-direction: column; gap: 8px;
  transition: border-color 0.3s, transform 0.3s var(--ease);
}
.about__card:hover { border-color: rgba(245,166,35,0.4); transform: translateY(-4px); }
.about__num { font-family: "Space Grotesk"; font-size: 2rem; font-weight: 700; color: var(--accent); }
.about__card span:last-child { color: var(--muted); font-size: 0.88rem; }

/* ============ Contact ============ */
.contact__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.contact__info p { color: var(--muted); margin-bottom: 28px; }
.contact__list { list-style: none; display: grid; gap: 18px; }
.contact__list li { display: flex; flex-direction: column; gap: 2px; }
.contact__list strong { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); font-weight: 600; }
.contact__list a, .contact__list span { color: var(--text); font-size: 1.05rem; }
.contact__list a:hover { color: var(--accent); }

.form {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px; display: grid; gap: 16px;
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label { display: grid; gap: 7px; font-size: 0.85rem; color: var(--muted); font-weight: 500; }
.form input, .form select, .form textarea {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 12px 14px; color: var(--text); font-family: inherit; font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form input:focus, .form select:focus, .form textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(245,166,35,0.15);
}
.form textarea { resize: vertical; }
.form__success { color: #6ee7a8; font-size: 0.92rem; text-align: center; font-weight: 500; }
.form__error { color: #f87171; font-size: 0.92rem; text-align: center; font-weight: 500; }

/* ============ Footer ============ */
.footer { background: var(--bg-soft); border-top: 1px solid var(--line); padding: 60px 0 28px; }
.footer__inner { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer__brand p { color: var(--muted); margin-top: 14px; max-width: 280px; }
.footer__cols { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.footer__cols h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); margin-bottom: 16px; }
.footer__cols a, .footer__cols span { display: block; color: var(--muted); font-size: 0.95rem; margin-bottom: 10px; transition: color 0.2s; }
.footer__cols a:hover { color: var(--text); }
.footer__bottom {
  border-top: 1px solid var(--line); padding-top: 24px; color: var(--muted); font-size: 0.88rem;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.footer__legal { font-size: 0.8rem; opacity: 0.8; }

/* ============ Reveal animation ============ */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ============ Mobile nav ============ */
@media (max-width: 920px) {
  .nav {
    position: fixed; inset: 76px 0 auto 0;
    flex-direction: column; gap: 0;
    background: rgba(12, 15, 20, 0.97); backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    padding: 12px 24px 24px;
    transform: translateY(-120%); transition: transform 0.35s var(--ease);
  }
  .nav.is-open { transform: translateY(0); }
  .nav a { padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 1.05rem; }
  .burger { display: flex; }
  .header__actions .btn { display: none; }
}

@media (max-width: 880px) {
  .cards { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .about { grid-template-columns: 1fr; gap: 36px; }
  .contact__inner { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .section { padding: 72px 0; }
  .hero { padding: 140px 0 70px; }
  .cards, .steps, .projects, .about__panel { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .hero__stats { gap: 28px; }
  .footer__cols { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}