/* Mutlu Radyatör — site stili */
:root {
  --bg: #141619;
  --bg-2: #191b1f;
  --panel: #1e2125;
  --line: #2d3137;
  --text: #e9e5de;
  --muted: #a7a198;
  --copper: #d27a2c;
  --copper-2: #e8944a;
  --brass: #c8a25a;
  --green: #25d366;
  --head: "Oswald", "Arial Narrow", sans-serif;
  --body: "Source Sans 3", "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--head); font-weight: 600; line-height: 1.12; margin: 0; letter-spacing: .01em; }
h2 { font-size: clamp(30px, 4vw, 44px); text-transform: uppercase; }
p { margin: 0; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.ic { width: 20px; height: 20px; flex: none; }
.muted { color: var(--muted); }

/* Düğmeler */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 22px; border: 2px solid transparent;
  font-family: var(--body); font-size: 16px; font-weight: 700;
  cursor: pointer; transition: background .15s, border-color .15s, color .15s;
}
.btn-copper { background: var(--copper); color: #17130f; }
.btn-copper:hover { background: var(--copper-2); }
.btn-line { border-color: #4a4f56; color: var(--text); }
.btn-line:hover { border-color: var(--copper); color: var(--copper-2); }
.btn-wa { background: var(--green); color: #0d2b18; }
.btn-wa:hover { filter: brightness(1.06); }

/* Üst bilgi şeridi */
.topbar { background: #0f1113; border-bottom: 1px solid var(--line); font-size: 14px; color: var(--muted); }
.topbar .wrap { display: flex; justify-content: space-between; gap: 16px; height: 38px; align-items: center; }
.topbar span { display: inline-flex; align-items: center; gap: 7px; }
.topbar .ic { width: 15px; height: 15px; color: var(--copper); }
.topbar .left { display: flex; gap: 22px; }

/* Başlık */
.header { position: sticky; top: 0; z-index: 20; background: rgba(17, 19, 21, .96); border-bottom: 1px solid var(--line); backdrop-filter: blur(6px); }
.header .wrap { display: flex; align-items: center; gap: 28px; height: 74px; }
.brand { display: flex; align-items: center; gap: 12px; margin-right: auto; }
.brand-mark { width: 46px; height: 46px; border: 2px solid var(--copper); display: grid; place-items: center; color: var(--copper); }
.brand-mark svg { width: 30px; height: 30px; }
.brand-name { font-family: var(--head); font-size: 23px; font-weight: 600; letter-spacing: .03em; line-height: 1; text-transform: uppercase; }
.brand-sub { display: block; font-size: 11.5px; letter-spacing: .2em; color: var(--muted); margin-top: 5px; font-family: var(--body); font-weight: 600; }
.nav { display: flex; gap: 26px; font-weight: 600; font-size: 15.5px; }
.nav a:hover { color: var(--copper-2); }
.header .btn { padding: 10px 16px; font-size: 15px; }
.menu-btn { display: none; background: none; border: 1px solid var(--line); color: var(--text); width: 44px; height: 44px; padding: 0; cursor: pointer; }
.menu-btn svg { width: 22px; height: 22px; margin: auto; }

/* Giriş */
.hero {
  position: relative; overflow: hidden; padding: 76px 0 84px;
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 44px 44px;
  background-position: -1px -1px;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, var(--bg) 0%, rgba(20, 22, 25, .86) 45%, rgba(20, 22, 25, .55) 100%);
}
.hero .wrap { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero-tag { display: inline-block; font-weight: 700; font-size: 14px; color: var(--copper-2); border-left: 3px solid var(--copper); padding-left: 10px; margin-bottom: 18px; }
.hero h1 { font-size: clamp(38px, 5.4vw, 64px); text-transform: uppercase; font-weight: 700; }
.hero h1 em { font-style: normal; color: var(--copper-2); }
.hero-lead { font-size: 19px; color: #c9c3ba; max-width: 560px; margin: 20px 0 26px; }
.hero-list { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 30px; }
.hero-list li { list-style: none; padding: 6px 12px; border: 1px solid var(--line); background: rgba(30, 33, 37, .8); font-weight: 600; font-size: 15px; }
.hero-list { padding: 0; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-art { color: #8b857c; }
.hero-art svg { width: 100%; height: auto; }
.hero-art .tank, .hero-art .cap { fill: #25282c; }
.hero-art .fins { color: var(--copper); opacity: .75; }
.hero-art .hose { color: var(--copper); }
.hero-art .dim { color: #5d5850; font-family: var(--body); font-size: 12px; }

/* Araç şeridi */
.vehicles { background: var(--copper); color: #17130f; }
.vehicles .wrap { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 18px; padding: 15px 20px; font-family: var(--head); font-size: 18px; font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.vehicles span::after { content: "•"; margin-left: 18px; opacity: .45; }
.vehicles span:last-child::after { display: none; }

/* Bölümler */
.section { padding: 88px 0; }
.section.alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 40px; }
.section-head p { max-width: 460px; color: var(--muted); }
.label { display: block; color: var(--copper-2); font-weight: 700; font-size: 14px; margin-bottom: 8px; }

/* Hizmet grupları */
.groups { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.group { background: var(--panel); border: 1px solid var(--line); border-top: 3px solid var(--copper); }
.group h3 { font-size: 23px; text-transform: uppercase; padding: 22px 24px 6px; }
.group > p { padding: 0 24px 14px; color: var(--muted); font-size: 15.5px; }
.group ul { list-style: none; margin: 0; padding: 0 0 8px; }
.group li { display: flex; gap: 12px; padding: 12px 24px; border-top: 1px solid var(--line); }
.group li b { display: block; font-weight: 700; }
.group li small { display: block; color: var(--muted); font-size: 14.5px; line-height: 1.45; margin-top: 2px; }
.group li .ic { color: var(--copper); margin-top: 3px; width: 18px; height: 18px; }

/* Ürünler */
.products { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.product { position: relative; padding: 28px 26px 26px; background: var(--panel); border: 1px solid var(--line); }
.product .tag { position: absolute; top: -1px; right: 20px; background: var(--copper); color: #17130f; font-weight: 700; font-size: 13px; padding: 4px 10px; }
.product h3 { font-size: 26px; text-transform: uppercase; margin-bottom: 10px; }
.product p { color: var(--muted); font-size: 15.5px; margin-bottom: 16px; }
.product ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 7px; font-weight: 600; font-size: 15.5px; }
.product li { display: flex; gap: 9px; align-items: baseline; }
.product li::before { content: ""; width: 8px; height: 8px; background: var(--copper); flex: none; transform: translateY(-1px); }
.product .more { display: inline-flex; align-items: center; gap: 8px; margin-top: 20px; color: var(--copper-2); font-weight: 700; }
.product .more:hover { text-decoration: underline; }

/* Belirtiler */
.signs { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); }
.sign { padding: 26px 24px; border-right: 1px solid var(--line); }
.sign:last-child { border-right: 0; }
.sign .no { font-family: var(--head); font-size: 15px; color: var(--copper-2); letter-spacing: .08em; }
.sign h3 { font-size: 21px; text-transform: uppercase; margin: 8px 0 8px; }
.sign p { color: var(--muted); font-size: 15.5px; }
.signs-note { margin-top: 22px; display: flex; flex-wrap: wrap; align-items: center; gap: 16px; justify-content: space-between; padding: 20px 24px; background: var(--panel); border: 1px solid var(--line); border-left: 3px solid var(--copper); }
.signs-note p { font-weight: 600; }

/* Hakkımızda */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about p + p { margin-top: 14px; }
.about .text p { color: #cfc9c0; }
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.fact { background: var(--panel); padding: 24px; }
.fact b { display: block; font-family: var(--head); font-size: 21px; font-weight: 600; text-transform: uppercase; margin-bottom: 6px; }
.fact span { color: var(--muted); font-size: 15px; }

/* Galeri (fotoğraf eklenince görünür) */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.gallery figure { margin: 0; aspect-ratio: 4 / 3; overflow: hidden; background: var(--panel); border: 1px solid var(--line); }
.gallery img { width: 100%; height: 100%; object-fit: cover; }

/* Sık sorulanlar */
.faq { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 20px; }
.faq details { background: var(--panel); border: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: 18px 22px; font-weight: 700; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--copper-2); font-size: 22px; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { padding: 0 22px 18px; color: var(--muted); font-size: 15.5px; }

/* İletişim */
.contact { display: grid; grid-template-columns: .9fr 1.1fr; gap: 40px; align-items: stretch; }
.contact-rows { display: grid; gap: 2px; margin: 26px 0; }
.contact-row { display: flex; gap: 16px; align-items: center; padding: 16px 18px; background: var(--panel); border: 1px solid var(--line); }
.contact-row .ic { width: 22px; height: 22px; color: var(--copper); }
.contact-row small { display: block; color: var(--muted); font-size: 13.5px; }
.contact-row b { font-size: 17px; }
a.contact-row:hover { border-color: var(--copper); }
.map { min-height: 420px; border: 1px solid var(--line); background: var(--panel); }
.map iframe { width: 100%; height: 100%; min-height: 420px; border: 0; display: block; filter: grayscale(.25) contrast(1.05); }

/* Kapanış çağrısı */
.callband { background: linear-gradient(180deg, #1d150e, #141619); border-top: 1px solid #3a2a1c; padding: 64px 0; }
.callband .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; }
.callband h2 { font-size: clamp(28px, 3.6vw, 42px); }
.callband p { color: var(--muted); margin-top: 8px; }
.callband .big { font-family: var(--head); font-size: clamp(26px, 3.4vw, 38px); color: var(--copper-2); font-weight: 600; display: inline-flex; gap: 12px; align-items: center; }
.callband .big .ic { width: 30px; height: 30px; }

/* Alt bilgi */
.footer { background: #0e0f11; border-top: 1px solid var(--line); padding: 44px 0 28px; color: var(--muted); font-size: 15px; }
.footer .cols { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 30px; }
.footer h4 { margin: 0 0 12px; color: var(--text); font-family: var(--head); font-weight: 600; text-transform: uppercase; font-size: 16px; letter-spacing: .04em; }
.footer li { list-style: none; margin-bottom: 7px; }
.footer ul { margin: 0; padding: 0; }
.footer a:hover { color: var(--copper-2); }
.footer .bottom { margin-top: 34px; padding-top: 20px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: 14px; }

/* Sabit WhatsApp ve mobil çubuk */
.wa-float { position: fixed; right: 22px; bottom: 22px; z-index: 30; width: 58px; height: 58px; border-radius: 50%; background: var(--green); color: #fff; display: grid; place-items: center; box-shadow: 0 8px 24px rgba(0, 0, 0, .4); }
.wa-float svg { width: 30px; height: 30px; }
.mobile-bar { display: none; }

@media (max-width: 1020px) {
  .nav { display: none; }
  .menu-btn { display: grid; }
  .header .btn span { display: none; }
  .nav.open { display: flex; position: absolute; top: 74px; left: 0; right: 0; flex-direction: column; gap: 0; background: #111315; border-bottom: 1px solid var(--line); }
  .nav.open a { padding: 15px 20px; border-top: 1px solid var(--line); }
  .hero .wrap, .about, .contact { grid-template-columns: 1fr; }
  .hero-art { max-width: 520px; }
  .groups, .products { grid-template-columns: 1fr; }
  .signs { grid-template-columns: 1fr 1fr; }
  .sign:nth-child(2) { border-right: 0; }
  .sign:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .gallery { grid-template-columns: 1fr 1fr; }
  .footer .cols { grid-template-columns: 1fr 1fr; }
  .section-head { flex-direction: column; align-items: start; }
}

@media (max-width: 640px) {
  body { font-size: 16.5px; padding-bottom: 58px; }
  .topbar .hours { display: none; }
  .topbar .left { gap: 0; }
  .header .wrap { height: 66px; gap: 12px; }
  .nav.open { top: 66px; }
  .brand-name { font-size: 20px; }
  .brand-mark { width: 40px; height: 40px; }
  .hero { padding: 48px 0 56px; }
  .vehicles .wrap { gap: 4px 16px; font-size: 17px; }
  .vehicles span::after { display: none; }
  .hero-lead { font-size: 17px; }
  .hero-cta .btn { flex: 1 1 100%; justify-content: center; }
  .section { padding: 60px 0; }
  .signs { grid-template-columns: 1fr; }
  .sign { border-right: 0; border-bottom: 1px solid var(--line); }
  .sign:last-child { border-bottom: 0; }
  .faq { grid-template-columns: 1fr; }
  .facts { grid-template-columns: 1fr; }
  .footer .cols { grid-template-columns: 1fr; }
  .wa-float { display: none; }
  .mobile-bar { display: grid; grid-template-columns: 1fr 1fr; position: fixed; left: 0; right: 0; bottom: 0; z-index: 30; }
  .mobile-bar a { display: flex; align-items: center; justify-content: center; gap: 8px; height: 58px; font-weight: 700; font-size: 17px; }
  .mobile-bar .call { background: var(--copper); color: #17130f; }
  .mobile-bar .wa { background: var(--green); color: #0d2b18; }
  .map, .map iframe { min-height: 320px; }
}