/* ============================================
   ARCUM İNŞAAT — Ana Stil Dosyası
   ============================================ */
:root {
  --green-900: #0b3d27;
  --green-800: #0d5c3f;
  --green-700: #12744f;
  --green-100: #e6f4ec;
  --dark: #14201a;
  --ink: #22302a;
  --muted: #5c6b63;
  --amber: #f2a922;
  --amber-dark: #d99511;
  --bg: #ffffff;
  --bg-soft: #f5f8f6;
  --border: #e2e9e5;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(11, 61, 39, .10);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.65; font-size: 16.5px; }
img, svg { max-width: 100%; display: block; }
a { color: var(--green-800); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 1160px; margin: 0 auto; padding: 0 20px; }

h1, h2, h3, h4 { line-height: 1.25; color: var(--dark); font-weight: 800; }
h1 { font-size: clamp(1.9rem, 4vw, 2.9rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); margin-bottom: .6em; }
h3 { font-size: 1.22rem; margin-bottom: .4em; }
p { margin-bottom: 1em; }
.section { padding: 72px 0; }
.section-soft { background: var(--bg-soft); }
.section-title { text-align: center; max-width: 720px; margin: 0 auto 44px; }
.section-title .kicker { color: var(--green-700); font-weight: 700; text-transform: uppercase; letter-spacing: .08em; font-size: .85rem; display: block; margin-bottom: 8px; }
.section-title p { color: var(--muted); }

/* ---------- Topbar & Header ---------- */
.topbar { background: var(--green-900); color: #cfe8da; font-size: .86rem; padding: 7px 0; }
.topbar .container { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.topbar a { color: #fff; font-weight: 600; }
.site-header { position: sticky; top: 0; z-index: 50; background: #fff; border-bottom: 1px solid var(--border); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.3rem; color: var(--dark); text-decoration: none; }
.logo:hover { text-decoration: none; }
.logo-mark { width: 38px; height: 38px; background: var(--green-800); border-radius: 9px; display: grid; place-items: center; color: #fff; font-size: 1.05rem; font-weight: 800; }
.logo-img { width: 42px; height: 42px; border-radius: 9px; }
.logo small { display: block; font-size: .68rem; font-weight: 600; color: var(--muted); letter-spacing: .04em; }
.main-nav ul { display: flex; gap: 6px; list-style: none; align-items: center; }
.main-nav a { display: block; padding: 10px 13px; font-weight: 600; color: var(--ink); border-radius: 8px; font-size: .97rem; }
.main-nav a:hover, .main-nav a.active { background: var(--green-100); color: var(--green-800); text-decoration: none; }
.has-sub { position: relative; }
.has-sub > a::after { content: " ▾"; font-size: .7em; }
.sub-menu { position: absolute; top: 100%; left: 0; background: #fff; border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow); min-width: 240px; padding: 8px; display: none; list-style: none; }
.has-sub:hover .sub-menu, .has-sub:focus-within .sub-menu { display: block; }
.sub-menu a { padding: 10px 12px; }
.nav-cta { background: var(--amber); color: var(--dark) !important; font-weight: 700 !important; border-radius: 999px !important; padding: 10px 20px !important; white-space: nowrap; }
.nav-cta:hover { background: var(--amber-dark) !important; }
.nav-toggle { display: none; background: none; border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; font-size: 1.2rem; cursor: pointer; }

/* ---------- Hero ---------- */
.hero { background: linear-gradient(135deg, var(--green-900) 0%, var(--green-800) 60%, #0f6b47 100%); color: #fff; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background:
  radial-gradient(circle at 85% 20%, rgba(242,169,34,.15), transparent 40%),
  repeating-linear-gradient(90deg, transparent 0 120px, rgba(255,255,255,.03) 120px 122px); }
.hero .container { position: relative; padding-top: 84px; padding-bottom: 84px; max-width: 860px; text-align: center; }
.hero h1 { color: #fff; margin-bottom: 18px; }
.hero p.lead { font-size: 1.15rem; color: #d8ecdf; max-width: 640px; margin: 0 auto 30px; }
.hero-badges { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 30px; }
.hero-badges span { background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22); padding: 6px 14px; border-radius: 999px; font-size: .86rem; font-weight: 600; }
.btn { display: inline-block; padding: 14px 30px; border-radius: 999px; font-weight: 700; font-size: 1rem; transition: .18s; }
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--amber); color: var(--dark); }
.btn-primary:hover { background: var(--amber-dark); }
.btn-ghost { border: 2px solid rgba(255,255,255,.5); color: #fff; margin-left: 10px; }
.btn-green { background: var(--green-800); color: #fff; }
.btn-green:hover { background: var(--green-900); color: #fff; }

/* Page hero (inner pages) */
.page-hero { background: linear-gradient(135deg, var(--green-900), var(--green-800)); color: #fff; padding: 56px 0; }
.page-hero h1 { color: #fff; margin-bottom: 10px; }
.page-hero p { color: #d8ecdf; max-width: 760px; margin-bottom: 0; }
.breadcrumb { font-size: .86rem; margin-bottom: 14px; color: #a9cdb8; }
.breadcrumb a { color: #d8ecdf; }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 26px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: .18s; display: flex; flex-direction: column; }
.card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.card img { aspect-ratio: 16/10; object-fit: cover; width: 100%; }
.card-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.card-body p { color: var(--muted); font-size: .95rem; flex: 1; }
.card-link { font-weight: 700; font-size: .95rem; }
.card-link::after { content: " →"; }

/* Feature list */
.feature { display: flex; gap: 14px; align-items: flex-start; }
.feature .ico { flex: 0 0 44px; width: 44px; height: 44px; border-radius: 10px; background: var(--green-100); color: var(--green-800); display: grid; place-items: center; font-size: 1.2rem; font-weight: 800; }
.feature h3 { font-size: 1.05rem; }
.feature p { color: var(--muted); font-size: .93rem; margin: 0; }

/* Steps */
.steps { counter-reset: step; }
.step { position: relative; padding-left: 62px; margin-bottom: 26px; }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 0; top: 0; width: 44px; height: 44px; border-radius: 50%; background: var(--green-800); color: #fff; font-weight: 800; display: grid; place-items: center; }
.step h3 { font-size: 1.08rem; }
.step p { color: var(--muted); margin: 0; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stats .num { font-size: 2.2rem; font-weight: 800; color: var(--green-800); }
.stats .lbl { color: var(--muted); font-size: .92rem; }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; margin: 20px 0 28px; font-size: .95rem; background: #fff; }
th, td { border: 1px solid var(--border); padding: 11px 14px; text-align: left; }
th { background: var(--green-100); color: var(--green-900); font-weight: 700; }
tr:nth-child(even) td { background: var(--bg-soft); }

/* ---------- FAQ ---------- */
details.faq { background: #fff; border: 1px solid var(--border); border-radius: 10px; margin-bottom: 12px; padding: 0; }
details.faq summary { cursor: pointer; font-weight: 700; padding: 17px 20px; list-style: none; position: relative; padding-right: 44px; }
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after { content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%); font-size: 1.4rem; color: var(--green-800); }
details.faq[open] summary::after { content: "–"; }
details.faq .faq-a { padding: 0 20px 18px; color: var(--muted); }

/* ---------- CTA band ---------- */
.cta-band { background: linear-gradient(120deg, var(--green-900), var(--green-800)); color: #fff; border-radius: 16px; padding: 46px 40px; display: flex; align-items: center; justify-content: space-between; gap: 26px; flex-wrap: wrap; }
.cta-band h2 { color: #fff; margin: 0 0 6px; }
.cta-band p { color: #d8ecdf; margin: 0; }

/* ---------- Article / prose ---------- */
.prose { max-width: 780px; margin: 0 auto; }
.prose h2 { margin-top: 44px; }
.prose h3 { margin-top: 28px; }
.prose ul, .prose ol { margin: 0 0 1.2em 1.4em; }
.prose li { margin-bottom: .45em; }
.prose blockquote { border-left: 4px solid var(--amber); background: var(--bg-soft); padding: 16px 20px; border-radius: 0 10px 10px 0; margin: 0 0 1.2em; color: var(--muted); }
.article-meta { color: var(--muted); font-size: .9rem; margin-bottom: 26px; }
.note { background: #fff8e8; border: 1px solid #f0dfae; border-radius: 10px; padding: 16px 20px; font-size: .93rem; color: #6b5a22; margin: 20px 0; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; }
.contact-info .item { display: flex; gap: 14px; margin-bottom: 22px; align-items: flex-start; }
.contact-info .ico { flex: 0 0 44px; width: 44px; height: 44px; border-radius: 10px; background: var(--green-100); color: var(--green-800); display: grid; place-items: center; font-size: 1.15rem; }
form .row { margin-bottom: 16px; }
label { font-weight: 600; font-size: .92rem; display: block; margin-bottom: 6px; }
input, select, textarea { width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: 9px; font-family: var(--font); font-size: .97rem; background: #fff; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--green-700); border-color: var(--green-700); }

/* ---------- Footer ---------- */
.site-footer { background: var(--dark); color: #b9c7bf; padding: 60px 0 0; font-size: .94rem; }
.site-footer h4 { color: #fff; font-size: 1.02rem; margin-bottom: 16px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 36px; padding-bottom: 44px; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 9px; }
.site-footer a { color: #b9c7bf; }
.site-footer a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 18px 0; font-size: .85rem; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* WhatsApp float */
.wa-float { position: fixed; right: 22px; bottom: 22px; z-index: 60; width: 58px; height: 58px; border-radius: 50%; background: #25d366; display: grid; place-items: center; box-shadow: 0 8px 24px rgba(0,0,0,.25); }
.wa-float svg { width: 30px; height: 30px; fill: #fff; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .contact-grid, .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .grid-2, .grid-3, .grid-4, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .main-nav { display: none; position: absolute; top: 72px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border); box-shadow: var(--shadow); }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; align-items: stretch; padding: 12px; }
  .sub-menu { position: static; display: block; border: none; box-shadow: none; padding-left: 16px; }
  .has-sub > a::after { content: ""; }
  .topbar { display: