:root {
  --bg: #0b1220;
  --surface: #101a2e;
  --card: #142136;
  --muted: #94a3b8;
  --text: #e5edf7;
  --solar: #fab839;
  --solar-2: #f59e0b;
  --border: rgba(255,255,255,0.08);
  --whatsapp: #25D366;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: 'Playfair Display', Georgia, serif; font-weight: 500; line-height: 1.15; margin: 0 0 .6em; }
h1 { font-size: clamp(2rem, 4.5vw, 3.6rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.text-gradient { background: linear-gradient(90deg, var(--solar), var(--solar-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* Navbar */
.nav { position: sticky; top: 0; z-index: 50; background: rgba(11,18,32,.85); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 24px; max-width: 1180px; margin: 0 auto; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { height: 54px; width: auto; background: #fff; border-radius: 10px; padding: 6px; }
.brand-text { font-family: 'Playfair Display', serif; font-size: 1.15rem; }
.brand-text small { display: block; color: var(--muted); font-size: .72rem; letter-spacing: .18em; text-transform: uppercase; font-family: 'Inter', sans-serif; }
.nav-links { display: flex; gap: 6px; align-items: center; }
.nav-links a { padding: 10px 14px; border-radius: 999px; font-size: .92rem; color: var(--text); transition: background .2s; }
.nav-links a:hover, .nav-links a.active { background: rgba(250,184,57,.15); color: var(--solar); }
.nav-cta { background: linear-gradient(90deg, var(--solar), var(--solar-2)); color: #0b1220 !important; font-weight: 600; }
.mobile-toggle { display: none; background: transparent; border: 1px solid var(--border); color: var(--text); padding: 8px 12px; border-radius: 10px; cursor: pointer; }

@media (max-width: 900px) {
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--surface); flex-direction: column; padding: 12px; border-bottom: 1px solid var(--border); }
  .nav-links.open { display: flex; }
  .mobile-toggle { display: inline-block; }
}

/* Hero */
.hero { position: relative; min-height: 88vh; display: flex; align-items: center; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background: url('assets/hero-solar.jpg') center/cover no-repeat; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(11,18,32,.92) 0%, rgba(11,18,32,.55) 60%, rgba(11,18,32,.3) 100%); }
.hero .container { position: relative; z-index: 2; padding: 80px 24px; }
.hero .kicker { display: inline-flex; gap: 8px; align-items: center; background: rgba(250,184,57,.12); border: 1px solid rgba(250,184,57,.4); color: var(--solar); padding: 6px 14px; border-radius: 999px; font-size: .78rem; letter-spacing: .2em; text-transform: uppercase; font-weight: 600; }
.hero p.lede { color: var(--muted); font-size: 1.1rem; max-width: 620px; margin-top: 20px; }
.btns { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 22px; border-radius: 999px; font-weight: 600; font-size: .95rem; transition: transform .15s, box-shadow .2s; cursor: pointer; border: none; }
.btn-primary { background: linear-gradient(90deg, var(--solar), var(--solar-2)); color: #0b1220; box-shadow: 0 10px 30px -10px rgba(250,184,57,.6); }
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { background: rgba(255,255,255,.05); }

/* Sections */
section.block { padding: 80px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-head .kicker { color: var(--solar); font-size: .78rem; letter-spacing: .22em; text-transform: uppercase; font-weight: 700; }
.section-head p { color: var(--muted); }

/* Product grid */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 20px; overflow: hidden; display: flex; flex-direction: column; transition: transform .2s, box-shadow .2s; }
.card:hover { transform: translateY(-4px); box-shadow: 0 20px 40px -20px rgba(0,0,0,.6); }
.card img { aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.card .body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.card h3 { font-size: 1.25rem; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: .93rem; flex: 1; }
.card .more { margin-top: 16px; color: var(--solar); font-weight: 600; font-size: .9rem; }

/* Product detail */
.detail { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 800px) { .detail { grid-template-columns: 1fr; } }
.detail img { border-radius: 20px; }
.chip { display: inline-block; background: rgba(250,184,57,.12); color: var(--solar); padding: 6px 12px; border-radius: 999px; font-size: .72rem; letter-spacing: .18em; text-transform: uppercase; font-weight: 700; }
.feature-list { list-style: none; padding: 0; margin: 20px 0; }
.feature-list li { padding: 10px 0 10px 28px; position: relative; border-bottom: 1px solid var(--border); }
.feature-list li::before { content: "✓"; position: absolute; left: 0; color: var(--solar); font-weight: 700; }

/* Types grid for water heater */
.types { display: grid; gap: 32px; }
.type-row { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; background: var(--card); border: 1px solid var(--border); border-radius: 24px; overflow: hidden; align-items: center; }
.type-row.reverse > div:first-child { order: 2; }
.type-row img { aspect-ratio: 4/3; object-fit: cover; height: 100%; }
.type-row .txt { padding: 32px; }
@media (max-width: 820px) { .type-row, .type-row.reverse { grid-template-columns: 1fr; }
.type-row.reverse > div:first-child { order: 0; } }

/* About */
.two-col { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 800px) { .two-col { grid-template-columns: 1fr; } }
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.stat { text-align: center; padding: 24px; background: var(--card); border: 1px solid var(--border); border-radius: 16px; }
.stat .n { font-family: 'Playfair Display', serif; font-size: 2rem; color: var(--solar); display: block; }
.stat .l { color: var(--muted); font-size: .85rem; margin-top: 4px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
@media (max-width: 800px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-card { background: var(--card); border: 1px solid var(--border); border-radius: 20px; padding: 32px; }
.contact-item { display: flex; gap: 16px; padding: 16px 0; border-bottom: 1px solid var(--border); }
.contact-item:last-child { border-bottom: 0; }
.contact-item .ic { width: 44px; height: 44px; border-radius: 12px; background: rgba(250,184,57,.15); color: var(--solar); display: grid; place-items: center; font-size: 1.2rem; flex-shrink: 0; }
.contact-item h4 { margin: 0 0 4px; font-size: .95rem; font-family: 'Inter', sans-serif; color: var(--muted); font-weight: 500; text-transform: uppercase; letter-spacing: .12em; }
.contact-item p, .contact-item a { margin: 0; color: var(--text); font-weight: 500; }

form input, form textarea { width: 100%; background: var(--surface); color: var(--text); border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; font: inherit; margin-bottom: 14px; }
form input:focus, form textarea:focus { outline: none; border-color: var(--solar); }

/* Footer */
footer { background: #060a14; border-top: 1px solid var(--border); padding: 60px 0 24px; margin-top: 40px; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
@media (max-width: 800px) { .foot-grid { grid-template-columns: 1fr; } }
footer .brand img { height: 88px; padding: 10px; }
footer h5 { color: var(--solar); font-family: 'Inter', sans-serif; text-transform: uppercase; letter-spacing: .15em; font-size: .78rem; font-weight: 700; margin-bottom: 16px; }
footer ul { list-style: none; padding: 0; margin: 0; }
footer li a { color: var(--muted); display: block; padding: 6px 0; }
footer li a:hover { color: var(--solar); }
.social { display: flex; gap: 10px; margin-top: 18px; }
.social a { width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,.06); display: grid; place-items: center; color: var(--text); transition: background .2s; }
.social a:hover { background: var(--solar); color: #0b1220; }
.copy { text-align: center; color: var(--muted); font-size: .82rem; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border); }

/* Floating WhatsApp */
.wa-float { position: fixed; bottom: 22px; right: 22px; z-index: 100; width: 60px; height: 60px; border-radius: 50%; background: var(--whatsapp); color: #fff; display: grid; place-items: center; box-shadow: 0 10px 30px rgba(37,211,102,.5); transition: transform .2s; }
.wa-float:hover { transform: scale(1.08); }
.wa-float svg { width: 32px; height: 32px; }

/* Carousel */
.carousel { position: relative; background: var(--surface); border-radius: 24px; overflow: hidden; }
.slides { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; scroll-behavior: smooth; }
.slides::-webkit-scrollbar { display: none; }
.slide { min-width: 100%; scroll-snap-align: center; position: relative; }
.slide img { aspect-ratio: 16/7; object-fit: cover; width: 100%; }
.slide .cap { position: absolute; left: 32px; bottom: 32px; right: 32px; }
.slide .cap h3 { font-size: 1.8rem; margin: 0 0 6px; }
.slide .cap p { color: #e5edf7; text-shadow: 0 2px 6px rgba(0,0,0,.7); margin: 0; }


/* Dropdown Menu */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropbtn {
    color: inherit;
    text-decoration: none;
    padding: 10px 0;
    display: block;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 260px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0,0,0,.12);
    overflow: hidden;
    z-index: 999;
}

.dropdown-content a {
    display: block;
    padding: 12px 18px;
    color: #333;
    text-decoration: none;
    white-space: nowrap;
    transition: .2s;
}

.dropdown-content a:hover {
    background: #f5f5f5;
    color: #0f766e; /* Change to your brand color */
}

.dropdown:hover .dropdown-content {
    display: block;
}