/* Modüled.com.tr tarzı kurumsal site — gunesenerjiliaydinlatma.com */

:root {
  --primary: #ffcb00;
  --primary-dark: #e6b800;
  --text: #1a1a1a;
  --text-muted: #5c6470;
  --bg: #ffffff;
  --bg-soft: #f5f6f8;
  --border: #e8eaed;
  --header-h: 100px;
  --container: min(1648px, 94vw);
  --radius: 8px;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  --font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

@media (max-width: 768px) {
  :root { --header-h: 72px; }
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
}
body.nav-open { overflow: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

.container { width: var(--container); margin: 0 auto; }

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  background: #fff;
  transition: box-shadow 0.3s;
}
.site-header.is-scrolled { box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06); }
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.logo img { height: 44px; width: auto; }
.header-actions { display: flex; align-items: center; gap: 1rem; }
.lang-switch { display: flex; gap: 0.35rem; font-size: 0.85rem; font-weight: 600; }
.lang-switch a { padding: 0.35rem 0.55rem; border-radius: 4px; color: var(--text-muted); }
.lang-switch a.is-active, .lang-switch a:hover { color: var(--text); background: var(--bg-soft); }
.nav-toggle { display: none; border: 0; background: transparent; font-size: 1.5rem; cursor: pointer; }

.site-nav > ul { display: flex; align-items: center; gap: 0.25rem; }
.site-nav a, .site-nav button {
  font: inherit; font-size: 0.95rem; font-weight: 500; color: var(--text);
  background: none; border: 0; cursor: pointer; padding: 0.65rem 1rem; border-radius: var(--radius);
}
.site-nav a:hover, .site-nav button:hover { background: var(--bg-soft); }
.has-submenu { position: relative; }
.submenu {
  display: none; position: absolute; top: 100%; left: 0; background: #fff;
  border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 0.75rem; z-index: 20;
}
.has-submenu:hover .submenu, .has-submenu.is-expanded .submenu { display: block; }
.submenu-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.75rem; min-width: 640px; }
.submenu-grid a { text-align: center; padding: 0.75rem; border-radius: var(--radius); border: 1px solid var(--border); }
.submenu-grid img { width: 80px; height: 80px; object-fit: contain; margin: 0 auto 0.5rem; }
.submenu-grid span { display: block; font-size: 0.82rem; font-weight: 600; }
.submenu-simple a { display: block; padding: 0.55rem 0.75rem; font-size: 0.9rem; min-width: 220px; }

@media (max-width: 1024px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0; background: #fff;
    padding: 1rem; transform: translateX(100%); transition: transform 0.3s; overflow-y: auto;
  }
  .site-nav.is-open { transform: translateX(0); }
  .site-nav > ul { flex-direction: column; align-items: stretch; }
  .submenu, .submenu-grid { position: static; min-width: 0; box-shadow: none; border: 0; grid-template-columns: 1fr 1fr; }
  .has-submenu .submenu { display: none; }
  .has-submenu.is-expanded .submenu { display: block; }
}

.hero {
  position: relative; min-height: calc(100vh - var(--header-h)); margin-top: var(--header-h);
  overflow: hidden; background: #1c2434;
}
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0.35; }
.hero-slide { display: none; position: relative; z-index: 2; min-height: calc(100vh - var(--header-h)); }
.hero-slide.is-active {
  display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 2rem;
  width: var(--container); margin: 0 auto; padding: 3rem 0 5rem;
}
.hero-copy h1 { font-size: clamp(1.75rem, 3.5vw, 3rem); line-height: 1.15; color: #fff; margin-bottom: 1rem; }
.hero-copy h1 span { color: var(--primary); }
.hero-copy p { color: rgba(255,255,255,0.85); max-width: 520px; margin-bottom: 1.5rem; }
.hero-features { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1.75rem; }
.hero-features span {
  background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2);
  color: #fff; padding: 0.4rem 0.75rem; border-radius: 999px; font-size: 0.82rem;
}
.hero-visual img { max-height: min(520px, 60vh); margin: 0 auto; filter: drop-shadow(0 20px 40px rgba(0,0,0,0.35)); }
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.85rem 1.5rem;
  border-radius: 999px; font-weight: 600; font-size: 0.95rem; border: 2px solid transparent;
}
.btn-primary { background: var(--primary); color: #1a1a1a; }
.btn-primary:hover { background: var(--primary-dark); }
.hero-controls {
  position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); z-index: 5;
  display: flex; align-items: center; gap: 1rem;
}
.hero-dot { width: 10px; height: 10px; border-radius: 50%; border: 0; background: rgba(255,255,255,0.35); cursor: pointer; }
.hero-dot.is-active { background: var(--primary); }
.hero-prev, .hero-next {
  width: 42px; height: 42px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.35);
  background: rgba(255,255,255,0.08); color: #fff; cursor: pointer;
}

@media (max-width: 900px) {
  .hero-slide.is-active { grid-template-columns: 1fr; text-align: center; padding: 2rem 1rem 5rem; }
  .hero-copy p { margin-left: auto; margin-right: auto; }
  .hero-features { justify-content: center; }
}

.section { padding: 5rem 0; }
.section-soft { background: var(--bg-soft); }
.section-label { color: var(--primary-dark); font-weight: 700; font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 0.5rem; }
.section-title { font-size: clamp(1.5rem, 2.5vw, 2.25rem); margin-bottom: 2rem; max-width: 720px; }

.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1.25rem; }
.product-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: box-shadow 0.25s, transform 0.25s; }
.product-card:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.product-card img { aspect-ratio: 1; object-fit: contain; padding: 1.25rem; background: #fafafa; }
.product-card h3 { padding: 1rem 1rem 0.25rem; font-size: 1rem; }
.product-card p { padding: 0 1rem 1rem; font-size: 0.85rem; color: var(--text-muted); }

.about-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 3rem; align-items: center; }
.about-grid p { color: var(--text-muted); margin-bottom: 1rem; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 1.5rem; }
.stat { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; text-align: center; }
.stat strong { display: block; font-size: 1.75rem; color: var(--primary-dark); }
.stat span { font-size: 0.85rem; color: var(--text-muted); }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.contact-box { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 1.5rem; }
.contact-box h3 { margin-bottom: 0.75rem; }
.contact-box p, .contact-box a { color: var(--text-muted); font-size: 0.95rem; }

.site-footer { background: #141a24; color: rgba(255,255,255,0.75); padding: 3.5rem 0 1.5rem; }
.footer-grid { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 2rem; margin-bottom: 2rem; }
.footer-grid h4 { color: #fff; margin-bottom: 0.75rem; font-size: 0.95rem; }
.footer-grid a { display: block; padding: 0.25rem 0; font-size: 0.88rem; }
.footer-grid a:hover { color: var(--primary); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 1rem; font-size: 0.82rem; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; }

@media (max-width: 768px) {
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}