/* SHAF Enerji Çözümleri — şirket sitesi (shafenerji.com). Renkler logo yeşili + Alarm Paneli koyu yeşili. */
:root {
  --yesil: #6aaa3a; --yesil-k: #4c9a2a; --yesil-a: #eef5e8; --koyu: #2c3a2e; --koyu-2: #1f2a21;
  --metin: #1d2a20; --soluk: #5b6b5f; --cizgi: #d7e3d0; --beyaz: #fff; --kirmizi: #d64545;
  --golge: 0 10px 30px rgba(31, 42, 33, .08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; font-family: "Segoe UI", Roboto, system-ui, -apple-system, sans-serif; color: var(--metin); background: var(--beyaz); line-height: 1.6; }
img { max-width: 100%; display: block; }
a { color: var(--yesil-k); }
.kap { width: min(1160px, 100% - 40px); margin-inline: auto; }

/* üst çubuk */
.ust { position: sticky; top: 0; z-index: 50; background: rgba(255, 255, 255, .96); backdrop-filter: blur(8px); border-bottom: 1px solid transparent; transition: box-shadow .2s, border-color .2s; }
.ust.golge { box-shadow: 0 4px 18px rgba(0, 0, 0, .06); border-color: var(--cizgi); }
.ust-ic { display: flex; align-items: center; gap: 24px; height: 76px; }
.marka img { height: 56px; width: auto; }
.menu { display: flex; gap: 26px; margin-left: auto; }
.menu a { color: var(--metin); text-decoration: none; font-weight: 600; font-size: 15px; }
.menu a:hover { color: var(--yesil-k); }
.menu-dugme { display: none; margin-left: auto; border: 1px solid var(--cizgi); background: var(--beyaz); border-radius: 10px; width: 44px; height: 44px; font-size: 22px; cursor: pointer; }

/* düğmeler */
.dugme { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 22px; border-radius: 12px; font-weight: 700;
  font-size: 15px; text-decoration: none; border: 2px solid transparent; cursor: pointer; font-family: inherit; transition: transform .1s, background .2s; }
.dugme:active { transform: translateY(1px); }
.dugme.ana { background: var(--yesil-k); color: var(--beyaz); }
.dugme.ana:hover { background: #3f8622; }
.dugme.yesil { background: #25d366; color: #fff; }
.dugme.cizgi { border-color: var(--yesil-k); color: var(--yesil-k); background: transparent; }
.dugme.cizgi.acik { border-color: rgba(255, 255, 255, .7); color: #fff; }
.giris-kutu { position: relative; }
.giris-dugme { background: var(--koyu); color: #fff; padding: 10px 16px; font-size: 14px; }
.giris-menu { position: absolute; right: 0; top: calc(100% + 10px); width: 300px; background: #fff; border: 1px solid var(--cizgi); border-radius: 14px;
  box-shadow: var(--golge); padding: 8px; display: flex; flex-direction: column; }
.giris-menu[hidden] { display: none; }
.giris-menu a { text-decoration: none; color: var(--metin); padding: 10px 12px; border-radius: 10px; }
.giris-menu a:hover { background: var(--yesil-a); }
.giris-menu b { display: block; font-size: 15px; }
.giris-menu span { display: block; font-size: 13px; color: var(--soluk); }

/* açılış */
.acilis { background: radial-gradient(1200px 500px at 85% -10%, #dff0d2 0, transparent 60%), linear-gradient(180deg, #f6faf3, #fff); padding: 72px 0 64px; }
.acilis-ic { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: center; }
.ust-etiket { margin: 0 0 6px; color: var(--yesil-k); font-weight: 700; letter-spacing: .08em; text-transform: uppercase; font-size: 13px; }
h1 { font-size: clamp(36px, 5.2vw, 60px); line-height: 1.08; margin: 0 0 18px; letter-spacing: -.02em; }
h1 span { color: var(--yesil-k); }
.giris-metin { font-size: 18px; color: var(--soluk); margin: 0 0 26px; max-width: 620px; }
.acilis-dugmeler { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }
.sayilar { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.sayilar div { background: #fff; border: 1px solid var(--cizgi); border-radius: 18px; padding: 22px; box-shadow: var(--golge); }
.sayilar b { display: block; font-size: 34px; color: var(--koyu); line-height: 1.1; }
.sayilar span { color: var(--soluk); font-size: 14px; }

/* bölümler */
.bolum { padding: 84px 0; }
.bolum h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.15; margin: 0 0 30px; letter-spacing: -.01em; }
.acik-zemin { background: var(--yesil-a); }
.koyu { background: linear-gradient(135deg, var(--koyu-2), var(--koyu)); color: #e8efe6; }
.koyu h2 { color: #fff; }
.koyu .ust-etiket { color: #9fd36f; }
.kartlar { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.kart { background: #fff; border: 1px solid var(--cizgi); border-radius: 18px; padding: 26px; box-shadow: var(--golge); transition: transform .2s, box-shadow .2s; }
.kart:hover { transform: translateY(-3px); box-shadow: 0 16px 36px rgba(31, 42, 33, .12); }
.kart h3 { margin: 14px 0 8px; font-size: 19px; }
.kart p { margin: 0; color: var(--soluk); font-size: 15px; }
.kart.sade { border-top: 4px solid var(--yesil); }
.kart.sade h3 { margin-top: 0; }
.ikon { width: 52px; height: 52px; border-radius: 14px; background: var(--yesil-a); display: grid; place-items: center; }
.ikon svg { width: 28px; height: 28px; fill: none; stroke: var(--yesil-k); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.iki { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.madde { padding-left: 0; list-style: none; margin: 18px 0 0; }
.madde li { padding-left: 28px; position: relative; margin: 10px 0; }
.madde li::before { content: "✓"; position: absolute; left: 0; color: #9fd36f; font-weight: 800; }

/* alarm ekranı çizimi */
.ekran { background: #f4f7f5; color: var(--metin); border-radius: 18px; overflow: hidden; box-shadow: 0 24px 60px rgba(0, 0, 0, .35); }
.ekran-bas { background: #263638; color: #fff; display: flex; align-items: center; gap: 6px; padding: 12px 16px; }
.ekran-bas span { width: 10px; height: 10px; border-radius: 50%; background: #5d6f70; }
.ekran-bas b { margin-left: 10px; font-size: 14px; }
.ekran-satir { display: flex; justify-content: space-between; align-items: center; margin: 10px 14px; padding: 12px 14px; background: #fff; border-radius: 12px; border-left: 5px solid #2fa562; font-size: 14px; }
.ekran-satir em { font-style: normal; font-weight: 700; color: #2fa562; }
.ekran-satir.kotu { border-left-color: var(--kirmizi); background: #fdecec; }
.ekran-satir.kotu em { color: var(--kirmizi); }
.ekran-bildirim { margin: 14px; padding: 12px 14px; background: #fff7e6; border: 1px solid #f0d49a; border-radius: 12px; font-size: 14px; font-weight: 600; }

/* referanslar */
.referans { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.referans li { background: #fff; border: 1px solid var(--cizgi); border-radius: 14px; padding: 16px 18px; font-weight: 700; }
.referans span { display: block; font-weight: 400; color: var(--soluk); font-size: 14px; margin-top: 4px; }

/* iletişim */
.iletisim { list-style: none; padding: 0; margin: 20px 0 0; }
.iletisim li { display: grid; grid-template-columns: 90px 1fr; gap: 10px; padding: 12px 0; border-bottom: 1px solid var(--cizgi); }
.iletisim span { color: var(--soluk); font-weight: 600; }
.iletisim a { font-weight: 700; text-decoration: none; }
.harita { border-radius: 18px; overflow: hidden; border: 1px solid var(--cizgi); box-shadow: var(--golge); min-height: 380px; }
.harita iframe { width: 100%; height: 100%; min-height: 380px; border: 0; display: block; }

/* alt */
.alt { background: var(--koyu-2); color: #b9c6bb; padding: 26px 0; font-size: 14px; }
.alt-ic { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.alt-ic > div { display: flex; align-items: center; gap: 12px; }
.alt img { background: #fff; border-radius: 8px; padding: 3px; }
.alt nav { display: flex; gap: 18px; flex-wrap: wrap; }
.alt a { color: #dfe8de; text-decoration: none; }
.alt a:hover { color: #9fd36f; }

/* tablet / telefon */
@media (max-width: 980px) {
  .menu { display: none; position: absolute; top: 76px; left: 0; right: 0; flex-direction: column; gap: 0; background: #fff; border-bottom: 1px solid var(--cizgi); box-shadow: var(--golge); }
  .menu.acik { display: flex; }
  .menu a { padding: 14px 20px; border-top: 1px solid var(--cizgi); }
  .menu-dugme { display: block; margin-left: 0; }
  .giris-kutu { margin-left: auto; }
  .acilis-ic, .iki { grid-template-columns: 1fr; }
  .kartlar { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  .ust-ic { gap: 10px; height: 68px; }
  .marka img { height: 46px; }
  .menu { top: 68px; }
  .giris-dugme { padding: 9px 12px; font-size: 13px; }
  .giris-menu { width: min(300px, 100vw - 24px); }
  .acilis { padding: 44px 0 40px; }
  .bolum { padding: 56px 0; }
  .kartlar, .kartlar.uc, .referans { grid-template-columns: 1fr; }
  .sayilar b { font-size: 28px; }
  .dugme { flex: 1 1 auto; }
}