/* ===== RESET & VARIABLES ===== */
:root {
  --bg: #ffffff;
  --surface: #f8f9fa;
  --surface-strong: #ffffff;
  --text: #111111;
  --muted: #5d666f;
  --border: #ebedf0;
  --primary: #a91f23;
  --primary-dark: #7d181d;
  --primary-light: #fce8e8;
  --shadow: 0 24px 80px rgba(0,0,0,0.08);
  --shadow-hover: 0 32px 100px rgba(169,31,35,0.12);
  --radius: 28px;
  --radius-sm: 14px;
  --radius-xs: 10px;
  --max-width: 1240px;
  --transition: 0.32s ease;
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
  --header-height: 72px;
}
* { box-sizing:border-box; margin:0; padding:0; }
html { scroll-behavior:smooth; }
body { font-family:var(--font-sans); color:var(--text); background:var(--bg); line-height:1.7; }
img { display:block; max-width:100%; height:auto; }
a { color:inherit; text-decoration:none; }
button, .btn { font:inherit; cursor:pointer; border:none; background:none; }
ul, ol { list-style:none; }
.container { width:min(100%,var(--max-width)); margin:0 auto; padding:0 24px; }

/* ===== TYPOGRAPHY ===== */
.heading-sm { font-size:0.78rem; letter-spacing:0.18em; text-transform:uppercase; color:var(--primary); font-weight:700; display:block; }
.section-title { text-align:center; max-width:720px; margin:0 auto 48px; }
.section-title h2 { margin:0.75rem 0 0; font-family:var(--font-serif); font-size:clamp(2rem,4vw,3.2rem); line-height:1.05; }
.section-title p { margin-top:18px; color:var(--muted); line-height:1.8; }

/* ===== BUTTONS ===== */
.btn { display:inline-flex; align-items:center; justify-content:center; gap:10px; padding:14px 28px; border-radius:999px; font-weight:600; transition:transform var(--transition), box-shadow var(--transition), background var(--transition); font-size:0.92rem; line-height:1.2; }
.btn-primary { background:var(--primary); color:#fff; box-shadow:0 12px 36px rgba(169,31,35,0.22); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 20px 48px rgba(169,31,35,0.30); }
.btn-secondary { background:transparent; border:1.5px solid var(--primary); color:var(--primary); }
.btn-secondary:hover { background:var(--primary-light); transform:translateY(-2px); }
.btn-white { background:#fff; color:var(--text); box-shadow:0 12px 32px rgba(0,0,0,0.08); }
.btn-white:hover { transform:translateY(-2px); box-shadow:0 20px 48px rgba(0,0,0,0.14); }
.btn-outline-white { border:1.5px solid rgba(255,255,255,0.5); color:#fff; }
.btn-outline-white:hover { background:rgba(255,255,255,0.12); transform:translateY(-2px); }

/* ===== HEADER ===== */
header { position:fixed; inset:0 0 auto; z-index:100; background:rgba(255,255,255,0.96); backdrop-filter:blur(18px); -webkit-backdrop-filter:blur(18px); border-bottom:1px solid rgba(16,24,40,0.06); height:var(--header-height); }
.site-nav { height:var(--header-height); display:flex; align-items:center; justify-content:space-between; gap:16px; }
.brand { display:flex; align-items:center; gap:12px; flex-shrink:0; }
.brand img { height:38px; width:auto; }
.brand span { font-family:var(--font-serif); font-size:1.1rem; font-weight:700; color:var(--primary); letter-spacing:-0.02em; }
.nav-links { display:flex; align-items:center; gap:6px; flex-wrap:wrap; }
.nav-links a { padding:8px 14px; border-radius:999px; font-weight:500; font-size:0.9rem; color:var(--muted); transition:color var(--transition), background var(--transition); }
.nav-links a:hover, .nav-links a.active { color:var(--primary); background:var(--primary-light); }
.nav-links .btn-secondary { padding:8px 20px; font-size:0.85rem; }
.nav-toggle { display:none; flex-direction:column; gap:5px; padding:8px; border-radius:var(--radius-xs); border:1px solid var(--border); }
.nav-toggle span { display:block; width:24px; height:2px; background:var(--text); border-radius:2px; transition:var(--transition); }
.nav-toggle.open span:nth-child(1) { transform:rotate(45deg) translate(5px,5px); }
.nav-toggle.open span:nth-child(2) { opacity:0; }
.nav-toggle.open span:nth-child(3) { transform:rotate(-45deg) translate(5px,-5px); }

/* ===== HERO ===== */
.hero { padding:80px 0 60px; background:var(--bg); }
.hero-grid { display:grid; grid-template-columns:minmax(0,1fr) 520px; gap:52px; align-items:center; }
.hero-preline { font-size:0.78rem; letter-spacing:0.18em; text-transform:uppercase; color:var(--primary); font-weight:700; display:inline-block; }
.hero-title { margin:18px 0 20px; font-family:var(--font-serif); font-size:clamp(2.6rem,5vw,4.4rem); line-height:0.96; letter-spacing:-0.03em; }
.hero-copy { font-size:1.05rem; color:var(--muted); max-width:560px; margin-bottom:32px; line-height:1.8; }
.hero-actions { display:flex; flex-wrap:wrap; gap:14px; }
.hero-visual { position:relative; border-radius:32px; overflow:hidden; box-shadow:var(--shadow); background:var(--surface); }
.hero-visual img { width:100%; aspect-ratio:4/3; object-fit:cover; }
.hero-pill { position:absolute; right:20px; bottom:20px; background:#fff; padding:16px 24px; border-radius:999px; border:1px solid var(--border); display:flex; gap:28px; box-shadow:0 18px 48px rgba(0,0,0,0.10); backdrop-filter:blur(4px); }
.hero-pill strong { display:block; font-size:1.2rem; color:var(--primary); }
.hero-pill span { color:var(--muted); font-size:0.8rem; }

/* ===== SECTIONS ===== */
.section { padding:80px 0; }
.section-light { background:var(--surface); }

/* ===== CARDS GRID ===== */
.grid-4 { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:24px; }
.card { background:var(--surface-strong); border:1px solid var(--border); border-radius:var(--radius); padding:32px 28px; transition:transform var(--transition), box-shadow var(--transition); }
.card:hover { transform:translateY(-6px); box-shadow:var(--shadow-hover); }
.card img { width:52px; height:52px; object-fit:contain; margin-bottom:18px; }
.card h3 { margin:0 0 12px; font-size:1.05rem; font-weight:700; }
.card p { color:var(--muted); line-height:1.75; font-size:0.95rem; }

/* ===== PRODUCTS ===== */
.products-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:26px; }
.product-card { border-radius:var(--radius); overflow:hidden; background:var(--surface-strong); border:1px solid var(--border); transition:transform var(--transition), box-shadow var(--transition); }
.product-card:hover { transform:translateY(-6px); box-shadow:var(--shadow-hover); }
.product-card .image { overflow:hidden; background:var(--surface); }
.product-card .image img { width:100%; aspect-ratio:4/3; object-fit:cover; transition:transform 0.4s ease; }
.product-card:hover .image img { transform:scale(1.03); }
.product-card .body { padding:24px 26px 28px; }
.product-card h3 { margin:0 0 10px; font-size:1.1rem; font-weight:700; }
.product-card p { margin:0 0 18px; color:var(--muted); line-height:1.75; font-size:0.92rem; }
.product-card .btn-secondary { font-size:0.85rem; padding:10px 22px; }

/* ===== ABOUT ===== */
.about-grid { display:grid; grid-template-columns:1fr 1fr; gap:44px; align-items:center; }
.about-grid .image { border-radius:32px; overflow:hidden; box-shadow:var(--shadow); }
.about-grid .image img { width:100%; aspect-ratio:4/3; object-fit:cover; }
.about-grid .copy h3 { margin:0 0 16px; font-size:clamp(2rem,3vw,2.7rem); font-family:var(--font-serif); line-height:1.02; }
.about-grid .copy p { color:var(--muted); line-height:1.85; margin-bottom:18px; }

/* ===== STATS ===== */
.stats-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:22px; }
.stat { background:var(--surface-strong); border:1px solid var(--border); border-radius:var(--radius-sm); padding:32px 24px; text-align:center; transition:transform var(--transition), box-shadow var(--transition); }
.stat:hover { transform:translateY(-4px); box-shadow:var(--shadow); }
.stat strong { display:block; font-size:clamp(2rem,3vw,3rem); color:var(--primary); font-weight:800; }
.stat span { display:block; margin-top:10px; color:var(--muted); letter-spacing:0.03em; text-transform:uppercase; font-size:0.8rem; font-weight:600; }

/* ===== CLIENTS ===== */
.clients-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(110px,1fr)); gap:28px; align-items:center; justify-items:center; }
.clients-grid img { max-height:44px; filter:grayscale(1) opacity(0.5); transition:filter var(--transition), opacity var(--transition), transform var(--transition); object-fit:contain; }
.clients-grid img:hover { filter:none; opacity:1; transform:translateY(-2px); }

/* ===== TESTIMONIALS ===== */
.testimonials-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px; }
.testimonial { background:var(--surface-strong); border:1px solid var(--border); border-radius:var(--radius); padding:30px 32px; box-shadow:0 20px 48px rgba(0,0,0,0.04); transition:transform var(--transition), box-shadow var(--transition); }
.testimonial:hover { transform:translateY(-4px); box-shadow:var(--shadow); }
.testimonial p { margin:0 0 20px; color:var(--muted); line-height:1.75; font-style:italic; }
.testimonial strong { display:block; font-weight:700; color:var(--text); }
.testimonial span { color:var(--primary); font-size:0.85rem; }

/* ===== CTA BANNER ===== */
.cta-banner { background:var(--primary); color:#fff; border-radius:var(--radius); padding:46px 44px; display:grid; grid-template-columns:1fr auto; gap:28px; align-items:center; box-shadow:0 24px 64px rgba(169,31,35,0.18); }
.cta-banner h3 { margin:0; font-size:clamp(1.6rem,2.5vw,2.2rem); line-height:1.05; font-family:var(--font-serif); }
.cta-banner p { margin:10px 0 0; color:rgba(255,255,255,0.88); font-size:0.98rem; }

/* ===== FOOTER ===== */
.footer { background:#111; color:rgba(255,255,255,0.72); padding:56px 0 28px; }
.footer-grid { display:grid; grid-template-columns:minmax(0,1.5fr) 1fr 1fr; gap:36px; }
.footer h4 { color:#fff; margin-bottom:18px; font-size:0.95rem; letter-spacing:0.06em; text-transform:uppercase; font-weight:700; }
.footer p, .footer a, .footer li { color:rgba(255,255,255,0.72); font-size:0.92rem; line-height:1.8; }
.footer a:hover { color:var(--primary); }
.footer-list { display:grid; gap:10px; }
.footer-list a { transition:color var(--transition); }
.contact-list { display:grid; gap:16px; }
.contact-list li { display:flex; align-items:flex-start; gap:12px; }
.contact-list svg { flex-shrink:0; color:var(--primary); margin-top:3px; }
.footer-bottom { display:flex; justify-content:space-between; align-items:center; gap:16px; padding-top:28px; margin-top:28px; border-top:1px solid rgba(255,255,255,0.08); color:rgba(255,255,255,0.5); font-size:0.85rem; }
.social-links { display:flex; gap:10px; }
.social-links a { display:inline-flex; align-items:center; justify-content:center; width:38px; height:38px; border-radius:50%; background:rgba(255,255,255,0.06); color:rgba(255,255,255,0.7); transition:background var(--transition), color var(--transition), transform var(--transition); font-weight:700; font-size:0.85rem; }
.social-links a:hover { background:#fff; color:var(--primary); transform:translateY(-2px); }

/* ===== CHATBOT ===== */
.chatbot-float { position:fixed; bottom:24px; right:24px; z-index:999; display:flex; flex-direction:column; align-items:flex-end; gap:12px; }
.chatbot-toggle { width:58px; height:58px; border-radius:50%; background:var(--primary); color:#fff; box-shadow:0 12px 40px rgba(169,31,35,0.32); font-size:1.6rem; display:flex; align-items:center; justify-content:center; transition:transform var(--transition), box-shadow var(--transition); }
.chatbot-toggle:hover { transform:scale(1.06); box-shadow:0 18px 52px rgba(169,31,35,0.40); }
.chatbot-panel { width:380px; max-width:calc(100vw - 32px); background:#fff; border-radius:var(--radius); box-shadow:0 32px 100px rgba(0,0,0,0.18); border:1px solid var(--border); overflow:hidden; display:none; animation:slideUp 0.3s ease; }
.chatbot-panel.open { display:flex; flex-direction:column; }
@keyframes slideUp { from { opacity:0; transform:translateY(20px) scale(0.96); } to { opacity:1; transform:translateY(0) scale(1); } }
.chatbot-header { padding:16px 20px; background:var(--primary); color:#fff; display:flex; justify-content:space-between; align-items:center; font-weight:600; }
.chatbot-header button { color:#fff; background:none; border:none; font-size:1.2rem; cursor:pointer; opacity:0.8; transition:opacity var(--transition); }
.chatbot-header button:hover { opacity:1; }
.chatbot-messages { padding:16px 20px; max-height:300px; overflow-y:auto; display:flex; flex-direction:column; gap:10px; background:var(--surface); }
.chatbot-message { padding:12px 16px; border-radius:16px; max-width:85%; font-size:0.92rem; line-height:1.6; animation:fadeIn 0.25s ease; }
@keyframes fadeIn { from { opacity:0; transform:translateY(6px); } to { opacity:1; transform:translateY(0); } }
.chatbot-message.bot { background:#fff; border:1px solid var(--border); align-self:flex-start; color:var(--text); }
.chatbot-message.user { background:var(--primary); color:#fff; align-self:flex-end; }
.chatbot-shortcuts { padding:8px 20px 12px; display:flex; flex-wrap:wrap; gap:8px; border-top:1px solid var(--border); background:#fff; }
.chatbot-shortcuts button { padding:6px 14px; border-radius:999px; border:1px solid var(--border); background:var(--surface); font-size:0.78rem; color:var(--muted); transition:all var(--transition); cursor:pointer; white-space:nowrap; }
.chatbot-shortcuts button:hover { border-color:var(--primary); color:var(--primary); background:var(--primary-light); }
.chatbot-input { display:flex; gap:10px; padding:12px 20px 16px; border-top:1px solid var(--border); background:#fff; }
.chatbot-input input { flex:1; padding:10px 16px; border:1px solid var(--border); border-radius:999px; font-size:0.9rem; outline:none; transition:border var(--transition); }
.chatbot-input input:focus { border-color:var(--primary); }
.chatbot-input button { padding:10px 20px; border-radius:999px; background:var(--primary); color:#fff; font-weight:600; font-size:0.85rem; transition:background var(--transition), transform var(--transition); }
.chatbot-input button:hover { background:var(--primary-dark); transform:scale(1.02); }

/* ===== CALCULATOR ===== */
.calc-section { padding:60px 0; background:var(--surface); }
.calc-container { max-width:820px; margin:0 auto; background:#fff; border-radius:var(--radius); border:1px solid var(--border); padding:40px 44px; box-shadow:var(--shadow); }
.calc-container h2 { font-family:var(--font-serif); font-size:clamp(1.8rem,3vw,2.4rem); margin-bottom:6px; }
.calc-container .sub { color:var(--muted); margin-bottom:28px; }
.calc-grid { display:grid; grid-template-columns:1fr 1fr; gap:20px 28px; }
.calc-group label { display:block; font-weight:600; font-size:0.85rem; margin-bottom:6px; color:var(--text); }
.calc-group select, .calc-group input { width:100%; padding:12px 16px; border:1px solid var(--border); border-radius:var(--radius-xs); font-size:0.95rem; background:#fff; transition:border var(--transition); outline:none; }
.calc-group select:focus, .calc-group input:focus { border-color:var(--primary); }
.calc-result { margin-top:28px; padding:24px 28px; background:var(--primary-light); border-radius:var(--radius-sm); border-left:4px solid var(--primary); display:none; }
.calc-result.show { display:block; animation:fadeIn 0.3s ease; }
.calc-result strong { display:block; font-size:1.1rem; color:var(--primary); margin-bottom:8px; }
.calc-result p { margin:4px 0; color:var(--text); font-size:0.95rem; }
.calc-result .highlight { font-weight:700; color:var(--primary); }

/* ===== PAGE HERO (inner pages) ===== */
.page-hero { padding:120px 0 70px; background:var(--primary); color:#fff; position:relative; overflow:hidden; }
.page-hero::after { content:''; position:absolute; inset:0; background:url('data:image/svg+xml;utf8,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><path d="M30 0L60 30L30 60L0 30Z" fill="rgba(255,255,255,0.03)"/></svg>') repeat; opacity:0.5; pointer-events:none; }
.page-hero .container { position:relative; z-index:1; }
.page-hero h1 { font-family:var(--font-serif); font-size:clamp(2.4rem,4vw,3.8rem); line-height:1.05; margin-bottom:12px; }
.page-hero .breadcrumb { display:flex; gap:8px; color:rgba(255,255,255,0.7); font-size:0.9rem; flex-wrap:wrap; }
.page-hero .breadcrumb a { color:rgba(255,255,255,0.85); }
.page-hero .breadcrumb a:hover { color:#fff; }
.page-hero .breadcrumb span { color:rgba(255,255,255,0.4); }

/* ===== PAGE CONTENT ===== */
.page-content { padding:60px 0; }

/* ===== PRODUCT DETAIL SIDEBAR ===== */
.product-detail-grid { display:grid; grid-template-columns:2fr 1fr; gap:44px; }
.product-detail-grid .main img { border-radius:var(--radius); width:100%; aspect-ratio:16/9; object-fit:cover; border:1px solid var(--border); }
.product-detail-grid .main h2 { font-family:var(--font-serif); font-size:clamp(1.8rem,3vw,2.6rem); margin:20px 0 12px; }
.product-detail-grid .main p { color:var(--muted); line-height:1.85; }
.spec-table { width:100%; border-collapse:collapse; margin:20px 0; font-size:0.92rem; }
.spec-table tr { border-bottom:1px solid var(--border); }
.spec-table td { padding:12px 8px; }
.spec-table td:first-child { font-weight:600; color:var(--text); width:40%; }
.spec-table td:last-child { color:var(--muted); }
.sidebar-links { background:#fff; border:1px solid var(--border); border-radius:var(--radius-sm); padding:20px 0; }
.sidebar-links a { display:flex; align-items:center; gap:12px; padding:10px 22px; color:var(--muted); font-size:0.9rem; transition:all var(--transition); border-left:3px solid transparent; }
.sidebar-links a:hover, .sidebar-links a.active { color:var(--primary); background:var(--primary-light); border-left-color:var(--primary); }
.sidebar-links a .icon { font-size:1.1rem; }

/* ===== GALLERY ===== */
.gallery-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(240px,1fr)); gap:20px; }
.gallery-grid .item { border-radius:var(--radius-sm); overflow:hidden; border:1px solid var(--border); transition:transform var(--transition), box-shadow var(--transition); cursor:pointer; background:var(--surface); }
.gallery-grid .item:hover { transform:scale(1.02); box-shadow:var(--shadow); }
.gallery-grid .item img { width:100%; aspect-ratio:1/1; object-fit:cover; }

/* ===== CAREERS ACCORDION ===== */
.accordion { border:1px solid var(--border); border-radius:var(--radius-sm); overflow:hidden; }
.accordion-item { border-bottom:1px solid var(--border); }
.accordion-item:last-child { border-bottom:none; }
.accordion-header { padding:18px 24px; background:#fff; cursor:pointer; display:flex; justify-content:space-between; align-items:center; font-weight:600; transition:background var(--transition); }
.accordion-header:hover { background:var(--surface); }
.accordion-header .arrow { transition:transform var(--transition); font-size:0.8rem; }
.accordion-item.open .accordion-header .arrow { transform:rotate(180deg); }
.accordion-body { padding:0 24px 20px; display:none; color:var(--muted); line-height:1.8; }
.accordion-item.open .accordion-body { display:block; animation:fadeIn 0.25s ease; }
.accordion-body ul { padding-left:20px; list-style:disc; color:var(--muted); }
.accordion-body ul li { margin-bottom:6px; }

/* ===== CONTACT FORM ===== */
.contact-grid { display:grid; grid-template-columns:1fr 1fr; gap:44px; }
.contact-form .form-group { margin-bottom:18px; }
.contact-form label { display:block; font-weight:600; font-size:0.85rem; margin-bottom:4px; }
.contact-form input, .contact-form textarea, .contact-form select { width:100%; padding:12px 16px; border:1px solid var(--border); border-radius:var(--radius-xs); font-size:0.95rem; transition:border var(--transition); outline:none; font-family:var(--font-sans); }
.contact-form input:focus, .contact-form textarea:focus, .contact-form select:focus { border-color:var(--primary); }
.contact-form textarea { min-height:120px; resize:vertical; }
.contact-info { display:grid; gap:20px; }
.contact-info .item { display:flex; gap:14px; align-items:flex-start; padding:16px 20px; background:var(--surface); border-radius:var(--radius-xs); border:1px solid var(--border); }
.contact-info .item .icon { font-size:1.4rem; color:var(--primary); flex-shrink:0; margin-top:2px; }
.contact-info .item h4 { font-size:0.9rem; font-weight:600; margin-bottom:2px; }
.contact-info .item p, .contact-info .item a { color:var(--muted); font-size:0.9rem; }
.contact-info .item a:hover { color:var(--primary); }

/* ===== RESPONSIVE ===== */
@media (max-width:1040px) {
  .hero-grid, .about-grid, .footer-grid, .product-detail-grid, .contact-grid { grid-template-columns:1fr; }
  .products-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .testimonials-grid { grid-template-columns:1fr 1fr; }
  .grid-4 { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .cta-banner { grid-template-columns:1fr; text-align:center; padding:36px 28px; }
}
@media (max-width:820px) {
  .nav-links { position:absolute; top:var(--header-height); left:0; right:0; background:#fff; padding:20px 24px; flex-direction:column; align-items:stretch; gap:4px; border-bottom:1px solid var(--border); box-shadow:var(--shadow); display:none; max-height:80vh; overflow-y:auto; }
  .nav-links.open { display:flex; }
  .nav-links a { padding:12px 16px; border-radius:var(--radius-xs); width:100%; }
  .nav-toggle { display:flex; }
  .hero-pill { display:none; }
  .calc-grid { grid-template-columns:1fr; }
  .calc-container { padding:28px 20px; }
  .chatbot-panel { width:calc(100vw - 32px); right:0; }
  .chatbot-float { right:12px; bottom:12px; }
  .products-grid { grid-template-columns:1fr; }
  .testimonials-grid { grid-template-columns:1fr; }
  .grid-4 { grid-template-columns:1fr; }
  .stats-grid { grid-template-columns:1fr; }
  .footer-grid { gap:28px; }
  .footer-bottom { flex-direction:column; text-align:center; }
  .gallery-grid { grid-template-columns:repeat(auto-fill,minmax(150px,1fr)); }
}
@media (max-width:480px) {
  .container { padding:0 16px; }
  .hero { padding:60px 0 40px; }
  .hero-title { font-size:2rem; }
  .hero-actions { flex-direction:column; }
  .hero-actions .btn { width:100%; justify-content:center; }
  .section { padding:50px 0; }
  .cta-banner { padding:28px 18px; }
  .card { padding:24px 18px; }
  .product-card .body { padding:18px; }
  .chatbot-panel { max-width:calc(100vw - 16px); }
  .page-hero { padding:100px 0 50px; }
  .page-hero h1 { font-size:2rem; }
}