/* Bulut Yeşil İnşaat — Tasarım Konsepti */
:root{
  --green:#0e4d33; --green-dark:#083626; --green-light:#177a52;
  --slate:#16211d; --slate-2:#1f2937; --ink:#14201b; --muted:#5b6b64;
  --bg:#ffffff; --bg-soft:#f3f6f4; --line:#e2e9e5;
  --radius:14px; --shadow:0 10px 30px rgba(8,54,38,.10);
  --font:'Manrope','Inter',system-ui,-apple-system,'Segoe UI',Roboto,Arial,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:16px}
img{max-width:100%;display:block}
a{color:var(--green);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:min(1180px,92%);margin:0 auto}
.section{padding:72px 0}
.section.soft{background:var(--bg-soft)}
.section-title{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;color:var(--slate);letter-spacing:-.02em;margin-bottom:10px}
.section-sub{color:var(--muted);max-width:680px;margin-bottom:36px}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--green-light);margin-bottom:10px}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:12px 0}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand img{height:46px;width:auto}
.brand-text{font-weight:800;font-size:1.15rem;color:var(--green-dark);line-height:1.15}
.brand-text small{display:block;font-size:.68rem;font-weight:700;letter-spacing:.18em;color:var(--muted)}
.main-nav{display:flex;gap:4px;align-items:center}
.main-nav a{color:var(--slate-2);font-weight:600;font-size:.95rem;padding:9px 13px;border-radius:9px}
.main-nav a:hover,.main-nav a.active{background:#e8f2ec;color:var(--green-dark);text-decoration:none}
.nav-toggle{display:none;background:var(--green);color:#fff;border:0;border-radius:9px;padding:10px 14px;font-size:1rem;cursor:pointer}
.btn{display:inline-block;background:var(--green);color:#fff;font-weight:700;padding:13px 26px;border-radius:11px;border:0;cursor:pointer;font-size:1rem;transition:.2s}
.btn:hover{background:var(--green-dark);text-decoration:none;transform:translateY(-1px)}
.btn.light{background:#fff;color:var(--green-dark)}
.btn.outline{background:transparent;border:2px solid #fff;color:#fff}
.btn.outline:hover{background:rgba(255,255,255,.12)}

/* Hero */
.hero{position:relative;color:#fff;background:linear-gradient(120deg,var(--green-dark) 0%,var(--green) 55%,#0a2e22 100%);overflow:hidden}
.hero-media{position:absolute;inset:0}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.35}
.hero-media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,40,28,.88),rgba(6,40,28,.45) 60%,rgba(6,40,28,.25))}
.hero-inner{position:relative;z-index:2;padding:96px 0 84px;max-width:760px}
.hero h1{font-size:clamp(2rem,4.6vw,3.4rem);font-weight:800;line-height:1.15;letter-spacing:-.02em;margin-bottom:18px}
.hero p.lead{font-size:1.15rem;opacity:.92;margin-bottom:14px;max-width:620px}
.hero .fields{font-weight:800;letter-spacing:.22em;font-size:.85rem;text-transform:uppercase;color:#9fd8bd;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}

/* Stats */
.stats{background:var(--slate);color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:38px 0}
.stat{text-align:center}
.stat b{display:block;font-size:2rem;font-weight:800;color:#7fd1a8}
.stat span{font-size:.92rem;opacity:.85}

/* Cards */
.grid{display:grid;gap:22px}
.grid.c3{grid-template-columns:repeat(3,1fr)}
.grid.c2{grid-template-columns:repeat(2,1fr)}
.grid.c4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:0 2px 10px rgba(8,54,38,.04)}
.card h3{font-size:1.12rem;font-weight:800;color:var(--slate);margin-bottom:8px}
.card p,.card li{color:var(--muted);font-size:.96rem}
.card ul{padding-left:18px;margin-top:8px}
.card .icon{width:46px;height:46px;border-radius:12px;background:#e8f2ec;color:var(--green);display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:800;margin-bottom:14px}
.why-list{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.why-item{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.why-num{flex:0 0 42px;height:42px;border-radius:50%;background:var(--green);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center}
.why-item h3{font-size:1.05rem;margin-bottom:4px;color:var(--slate)}
.why-item p{color:var(--muted);font-size:.95rem}

/* Projects */
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px}
.filter-btn{border:1.5px solid var(--green);background:#fff;color:var(--green-dark);font-weight:700;padding:9px 20px;border-radius:999px;cursor:pointer;font-size:.95rem}
.filter-btn.active{background:var(--green);color:#fff}
.project-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.project-media{height:170px;background:linear-gradient(135deg,var(--green) 0%,var(--green-dark) 60%,var(--slate) 100%);position:relative;overflow:hidden}
.project-media img{width:100%;height:100%;object-fit:cover}
.project-body{padding:20px;display:flex;flex-direction:column;gap:7px;flex:1}
.project-body h3{font-size:1rem;font-weight:800;color:var(--slate);line-height:1.4}
.project-meta{color:var(--muted);font-size:.88rem;display:flex;gap:14px;flex-wrap:wrap;margin-top:auto}
.badge{display:inline-block;font-size:.72rem;font-weight:800;letter-spacing:.05em;padding:4px 11px;border-radius:999px;text-transform:uppercase}
.badge.devam{background:#e5f4ec;color:var(--green-dark)}
.badge.tamam{background:#e8ebee;color:var(--slate-2)}

/* Gallery */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.gallery figure{border-radius:var(--radius);overflow:hidden;position:relative;background:linear-gradient(135deg,var(--green),var(--slate));min-height:210px}
.gallery img{width:100%;height:230px;object-fit:cover}
.gallery figcaption{position:absolute;left:0;right:0;bottom:0;padding:26px 16px 12px;color:#fff;font-weight:700;font-size:.95rem;background:linear-gradient(transparent,rgba(4,30,20,.8))}

/* News */
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:8px}
.news-card time{color:var(--green-light);font-weight:800;font-size:.83rem;letter-spacing:.06em}
.news-card h3{font-size:1.05rem;font-weight:800;color:var(--slate);line-height:1.45}
.news-card p{color:var(--muted);font-size:.94rem}

/* Page hero (sub pages) */
.page-hero{background:linear-gradient(120deg,var(--green-dark),var(--green));color:#fff;padding:58px 0}
.page-hero h1{font-size:clamp(1.7rem,3.4vw,2.5rem);font-weight:800;letter-spacing:-.01em}
.page-hero p{opacity:.9;max-width:640px;margin-top:8px}

/* Forms */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form-grid .full{grid-column:1/-1}
label{font-weight:700;font-size:.9rem;color:var(--slate);display:block;margin-bottom:6px}
input,textarea{width:100%;border:1.5px solid var(--line);border-radius:10px;padding:12px 14px;font-family:inherit;font-size:.97rem;background:#fff}
input:focus,textarea:focus{outline:2px solid #bfe3d2;border-color:var(--green-light)}
textarea{min-height:130px;resize:vertical}
.form-note{font-size:.85rem;color:var(--muted);margin-top:12px}
.form-ok{display:none;background:#e5f4ec;border:1px solid #bfe3d2;color:var(--green-dark);border-radius:10px;padding:12px 16px;margin-top:14px;font-weight:600}
.contact-info p{margin-bottom:12px;color:var(--muted)}
.contact-info b{color:var(--slate)}
.map-frame{width:100%;height:340px;border:0;border-radius:var(--radius)}

/* Footer */
.site-footer{background:var(--slate);color:#cfd8d3;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px;padding:54px 0 30px}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:14px}
.site-footer a{color:#cfd8d3}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:8px}
.footer-brand img{height:44px;background:#fff;border-radius:8px;padding:4px;margin-bottom:12px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:18px 0;font-size:.86rem;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
.concept-note{font-style:italic;opacity:.85}

/* Reveal */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

@media (max-width:900px){
  .grid.c3,.grid.c4{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .grid.c3,.grid.c2,.grid.c4,.why-list,.gallery,.form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .nav-toggle{display:block}
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:12px 4%;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  .main-nav.open{display:flex}
  .site-header .container{position:relative}
  .section{padding:52px 0}
}