/* ============================================================
   Çağın Grup Yapı İnşaat — Ana site stilleri
   ============================================================ */

:root {
  --bg: #0b0d10;
  --panel: #12151a;
  --panel-2: #161a20;
  --line: rgba(255, 255, 255, 0.08);
  --text: #eceae5;
  --muted: #a0a6ae;
  --accent: #f59e0b;
  --accent-2: #fbbf24;
  --accent-dark: #b45309;
  --radius: 16px;
  --nav-h: 76px;
  --font-head: "Sora", sans-serif;
  --font-body: "Inter", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

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

h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.2; }

.container {
  width: min(1200px, 92%);
  margin-inline: auto;
}

/* ---------- Üst menü ---------- */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  transition: background 0.35s ease, box-shadow 0.35s ease, backdrop-filter 0.35s ease;
}
.nav.scrolled {
  background: rgba(11, 13, 16, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  width: min(1280px, 94%);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  flex: none;
}
.brand img {
  width: auto;
  height: 30px;
  /* Kaynak logo 192×28 px; retina ekranlarda yumuşamayı azaltmak için
     tarayıcının ölçekleme kalitesini yükseltiyoruz. */
  image-rendering: -webkit-optimize-contrast;
}
@media (max-width: 480px) { .brand img { height: 24px; } }
.nav-links {
  display: flex;
  gap: 6px;
  align-items: center;
}
.nav-links a {
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.25s, background 0.25s;
}
.nav-links a:hover, .nav-links a.active { color: #fff; background: rgba(255, 255, 255, 0.07); }
.nav-cta {
  padding: 11px 22px !important;
  background: var(--accent);
  color: #14100a !important;
  font-weight: 700 !important;
  border-radius: 999px;
}
.nav-cta:hover { background: var(--accent-2) !important; }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  color: #fff;
  width: 44px; height: 44px;
  cursor: pointer;
}
.nav-toggle svg { width: 26px; height: 26px; }

@media (max-width: 900px) {
  .nav-toggle { display: grid; place-items: center; }
  .nav-links {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    background: rgba(11, 13, 16, 0.97);
    backdrop-filter: blur(16px);
    padding: 18px;
    gap: 4px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%);
    transition: transform 0.35s ease;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 14px 18px; border-radius: 12px; font-size: 1rem; }
}

/* ---------- Hero (video arka plan) ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: center;
  overflow: hidden;
  isolation: isolate;
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero-media video,
.hero-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transform: scale(1.02);
}
.hero-veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(120% 90% at 50% 10%, rgba(11,13,16,0.15) 0%, rgba(11,13,16,0.55) 60%, rgba(11,13,16,0.92) 100%),
    linear-gradient(180deg, rgba(11,13,16,0.55), rgba(11,13,16,0.25) 40%, var(--bg) 98%);
}
.hero-content {
  text-align: center;
  padding: 120px 20px 80px;
  max-width: 900px;
}
.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border: 1px solid rgba(245, 158, 11, 0.45);
  background: rgba(245, 158, 11, 0.08);
  color: var(--accent-2);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 26px;
}
.hero h1 {
  font-size: clamp(2.2rem, 5.4vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.55);
}
.hero h1 .grad {
  background: linear-gradient(100deg, var(--accent-2), var(--accent) 60%, #ff8c42);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p {
  margin: 22px auto 38px;
  max-width: 640px;
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: rgba(236, 234, 229, 0.85);
}
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.98rem;
  border: 0;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}
.btn-primary {
  background: var(--accent);
  color: #14100a;
  box-shadow: 0 12px 34px rgba(245, 158, 11, 0.35);
}
.btn-primary:hover { background: var(--accent-2); transform: translateY(-2px); }
.btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.16); transform: translateY(-2px); }

.hero-scroll {
  position: absolute;
  bottom: 28px; left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  display: grid;
  justify-items: center;
  gap: 10px;
}
.hero-scroll .line {
  width: 1px; height: 46px;
  background: linear-gradient(180deg, var(--accent), transparent);
  animation: drop 1.8s ease-in-out infinite;
}
@keyframes drop {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- Bölüm başlıkları ---------- */

.section { padding: 110px 0; position: relative; }
.sec-head { max-width: 720px; margin-bottom: 56px; }
.sec-head.center { margin-inline: auto; text-align: center; }
.sec-kicker {
  display: inline-block;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.sec-title {
  font-size: clamp(1.7rem, 3.6vw, 2.6rem);
  font-weight: 700;
}
.sec-sub { color: var(--muted); margin-top: 16px; font-size: 1.02rem; }

/* ---------- Hizmet kartları ---------- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 22px;
}
.card {
  background: linear-gradient(160deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 28px;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(245, 158, 11, 0.45);
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.45);
}
.card .ico {
  width: 54px; height: 54px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent);
  margin-bottom: 20px;
}
.card .ico svg { width: 26px; height: 26px; }
.card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 0.95rem; }

/* ---------- Scroll hikâyesi (değişen arka planlar) ---------- */

.story {
  position: relative;
}
.story-bg {
  position: sticky;
  top: 0;
  height: 100svh;
  overflow: hidden;
  margin-bottom: -100svh;
  z-index: 0;
}
.story-bg .layer {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.08);
  transition: opacity 1s ease, transform 6s ease;
  will-change: opacity, transform;
}
.story-bg .layer.on { opacity: 1; transform: scale(1); }
.story-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, var(--bg) 0%, rgba(11,13,16,0.35) 14%, rgba(11,13,16,0.35) 86%, var(--bg) 100%),
    linear-gradient(90deg, rgba(11,13,16,0.62), rgba(11,13,16,0.1) 55%);
}
.story-panels { position: relative; z-index: 1; }
.story-panel {
  min-height: 100svh;
  display: flex;
  align-items: center;
}
.story-card {
  width: min(560px, 92%);
  margin-left: max(4vw, calc((100vw - 1200px) / 2));
  background: rgba(13, 16, 20, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 22px;
  padding: 44px 42px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.5);
}
.story-card .idx {
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.28em;
  margin-bottom: 14px;
}
.story-card h3 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  margin-bottom: 14px;
}
.story-card p { color: rgba(236, 234, 229, 0.82); }

/* ---------- Sayaçlar ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}
.stat {
  text-align: center;
  padding: 40px 20px;
  background: linear-gradient(160deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.stat .num {
  font-family: var(--font-head);
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  font-weight: 700;
  color: var(--accent);
}
.stat .num::after { content: "+"; font-size: 0.7em; margin-left: 2px; }
.stat .num.no-plus::after { content: ""; }
.stat .lbl { color: var(--muted); margin-top: 6px; font-size: 0.95rem; }

/* ---------- Hakkımızda ---------- */

.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 60px;
  align-items: center;
}
@media (max-width: 900px) { .about-grid { grid-template-columns: 1fr; gap: 36px; } }
.about-media {
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.5);
}
.about-media picture { display: block; }
.about-media img { width: 100%; height: 520px; object-fit: cover; transition: transform 0.6s ease; }
.about-media:hover img { transform: scale(1.04); }
.about-media .badge {
  position: absolute;
  left: 20px; bottom: 20px;
  background: rgba(11, 13, 16, 0.78);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: 14px;
  padding: 14px 20px;
  font-family: var(--font-head);
  font-weight: 700;
}
.about-media .badge span { color: var(--accent); font-size: 1.4rem; display: block; }
.about-text p { color: var(--muted); margin-bottom: 16px; }
.about-list { margin-top: 26px; display: grid; gap: 14px; }
.about-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--text);
  font-weight: 500;
}
.about-list svg { width: 22px; height: 22px; color: var(--accent); flex: none; margin-top: 3px; }

/* ---------- Video bölümü ---------- */

.video-sec {
  position: relative;
  border-radius: 26px;
  overflow: hidden;
  box-shadow: 0 40px 90px rgba(0, 0, 0, 0.55);
  border: 1px solid var(--line);
}
.video-sec video { width: 100%; display: block; aspect-ratio: 16 / 9; object-fit: cover; background: #000; }

/* ---------- Referans galerisi ---------- */

.refs-note {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  max-width: 860px;
  margin: 0 auto 40px;
  padding: 18px 24px;
  border: 1px solid rgba(245, 158, 11, 0.3);
  background: rgba(245, 158, 11, 0.06);
  border-radius: 14px;
}
.refs-note svg { width: 22px; height: 22px; color: var(--accent); flex: none; margin-top: 3px; }
.refs-note p { color: var(--muted); font-size: 0.95rem; margin: 0; }
.refs-note strong { color: var(--text); font-weight: 600; }

.refs-cta { text-align: center; margin-top: 44px; }

.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 1000px) { .gallery { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .gallery { grid-template-columns: 1fr; } }
.g-item {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4 / 5;
  border: 1px solid var(--line);
}
.g-item picture { display: block; width: 100%; height: 100%; }
.g-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.7s cubic-bezier(0.2, 0.6, 0.2, 1);
}
.g-item:hover img { transform: scale(1.08); }
.g-item .cap {
  position: absolute;
  inset: auto 0 0 0;
  padding: 46px 22px 20px;
  background: linear-gradient(180deg, transparent, rgba(6, 8, 10, 0.92));
  transform: translateY(12px);
  opacity: 0;
  transition: opacity 0.4s, transform 0.4s;
}
.g-item:hover .cap { opacity: 1; transform: translateY(0); }
.g-item .cap h4 { font-size: 1.05rem; }
.g-item .cap span { color: var(--accent-2); font-size: 0.85rem; }
.g-item .zoom {
  position: absolute;
  top: 16px; right: 16px;
  width: 42px; height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: rgba(11, 13, 16, 0.66);
  backdrop-filter: blur(8px);
  color: #fff;
  opacity: 0;
  transition: opacity 0.35s;
}
.g-item:hover .zoom { opacity: 1; }
.g-item .zoom svg { width: 20px; height: 20px; }

/* ---------- Lightbox ---------- */

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(5, 6, 8, 0.94);
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.lightbox.open { opacity: 1; pointer-events: auto; }
.lightbox img {
  max-width: 92vw;
  max-height: 84vh;
  border-radius: 12px;
  box-shadow: 0 40px 120px rgba(0, 0, 0, 0.8);
}
.lb-cap {
  position: absolute;
  bottom: 26px; left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: #fff;
  font-family: var(--font-head);
}
.lb-cap span { display: block; color: var(--accent-2); font-size: 0.85rem; font-family: var(--font-body); }
.lb-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px; height: 52px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background 0.25s;
}
.lb-btn:hover { background: rgba(255, 255, 255, 0.2); }
.lb-btn svg { width: 22px; height: 22px; }
.lb-prev { left: 22px; }
.lb-next { right: 22px; }
.lb-close {
  position: absolute;
  top: 20px; right: 22px;
  transform: none;
}

/* ---------- İletişim ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 40px;
}
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
.c-info { display: grid; gap: 16px; align-content: start; }
.c-item {
  display: flex;
  gap: 16px;
  padding: 22px;
  background: linear-gradient(160deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  align-items: center;
}
.c-item .ico {
  width: 48px; height: 48px;
  flex: none;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(245, 158, 11, 0.12);
  color: var(--accent);
}
.c-item .ico svg { width: 22px; height: 22px; }
.c-item b { display: block; font-family: var(--font-head); font-size: 0.95rem; }
.c-item span { color: var(--muted); font-size: 0.92rem; }
.c-item a:hover { color: var(--accent-2); }

.c-form {
  background: linear-gradient(160deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 36px;
}
.c-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 560px) { .c-form .row { grid-template-columns: 1fr; } }
.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 8px;
}
.field input, .field textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text);
  padding: 14px 16px;
  font: inherit;
  transition: border-color 0.25s, background 0.25s;
}
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(245, 158, 11, 0.05);
}
.field textarea { min-height: 140px; resize: vertical; }

.alert {
  padding: 14px 18px;
  border-radius: 12px;
  margin-bottom: 18px;
  font-weight: 600;
  font-size: 0.94rem;
}
.alert-ok { background: rgba(34, 197, 94, 0.12); border: 1px solid rgba(34, 197, 94, 0.4); color: #6ee7a0; }
.alert-err { background: rgba(239, 68, 68, 0.12); border: 1px solid rgba(239, 68, 68, 0.4); color: #fca5a5; }

/* ---------- Alt bilgi ---------- */

.footer {
  border-top: 1px solid var(--line);
  padding: 60px 0 30px;
  background: #08090b;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 44px;
}
@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr; } }
.footer h4 { font-size: 1rem; margin-bottom: 18px; color: #fff; }
.footer p, .footer li { color: var(--muted); font-size: 0.93rem; }
.footer li { margin-bottom: 10px; }
.footer a:hover { color: var(--accent-2); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  font-size: 0.85rem;
}

/* ---------- WhatsApp düğmesi ---------- */

.wa-fab {
  position: fixed;
  right: 22px; bottom: 22px;
  z-index: 90;
  width: 58px; height: 58px;
  border-radius: 50%;
  background: #25d366;
  display: grid;
  place-items: center;
  color: #fff;
  box-shadow: 0 14px 40px rgba(37, 211, 102, 0.45);
  transition: transform 0.25s;
}
.wa-fab:hover { transform: scale(1.1); }
.wa-fab svg { width: 30px; height: 30px; }

/* ---------- Görünürlük animasyonları ---------- */

.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.1s; }
.reveal.d2 { transition-delay: 0.2s; }
.reveal.d3 { transition-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .story-bg .layer { transition: opacity 0.3s; transform: none; }
}