/* SIB SCI - Main Stylesheet */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy: #0f1f3d;
  --blue: #1d4ed8;
  --blue-light: #3b82f6;
  --accent: #06b6d4;
  --bg: #f8faff;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --white: #ffffff;
  --radius: 12px;
}

html { scroll-behavior: smooth; }
body { font-family: 'Inter', system-ui, sans-serif; color: var(--text); background: var(--white); line-height: 1.6; }

/* NAV */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(15,31,61,0.97); backdrop-filter: blur(8px);
  padding: 0 5%;
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
  box-shadow: 0 1px 20px rgba(0,0,0,0.3);
}
.nav-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.nav-logo img { height: 36px; }
.nav-logo span { font-size: 1.3rem; font-weight: 700; color: var(--white); letter-spacing: -0.5px; }
.nav-logo span em { color: var(--accent); font-style: normal; }
nav ul { list-style: none; display: flex; gap: 32px; }
nav ul a { color: rgba(255,255,255,0.85); text-decoration: none; font-size: 0.9rem; font-weight: 500; transition: color 0.2s; }
nav ul a:hover, nav ul a.active { color: var(--accent); }
.nav-cta { background: var(--blue); color: var(--white) !important; padding: 8px 20px; border-radius: 6px; font-weight: 600 !important; transition: background 0.2s !important; }
.nav-cta:hover { background: var(--blue-light) !important; color: var(--white) !important; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.hamburger span { width: 24px; height: 2px; background: white; transition: 0.3s; }

/* HERO */
.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #0f1f3d 0%, #1a3a6b 40%, #0e3460 70%, #071528 100%);
  display: flex; align-items: center;
  padding: 80px 5% 60px;
  position: relative; overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; width: 100%; }
.hero-tag { display: inline-block; background: rgba(6,182,212,0.15); border: 1px solid rgba(6,182,212,0.4); color: var(--accent); padding: 5px 14px; border-radius: 20px; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase; margin-bottom: 20px; }
.hero h1 { font-size: clamp(2rem, 4vw, 3.2rem); font-weight: 800; color: var(--white); line-height: 1.15; margin-bottom: 20px; letter-spacing: -1px; }
.hero h1 span { color: var(--accent); }
.hero p { font-size: 1.1rem; color: rgba(255,255,255,0.75); margin-bottom: 36px; max-width: 480px; }
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary { background: var(--blue); color: white; padding: 14px 28px; border-radius: 8px; text-decoration: none; font-weight: 700; font-size: 0.95rem; transition: all 0.2s; border: none; cursor: pointer; display: inline-block; }
.btn-primary:hover { background: var(--blue-light); transform: translateY(-1px); box-shadow: 0 8px 24px rgba(29,78,216,0.4); }
.btn-outline { background: transparent; color: white; padding: 14px 28px; border-radius: 8px; text-decoration: none; font-weight: 600; font-size: 0.95rem; border: 1.5px solid rgba(255,255,255,0.4); transition: all 0.2s; display: inline-block; }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: white; }
.hero-stats { display: flex; gap: 32px; margin-top: 40px; }
.stat { }
.stat-num { font-size: 1.8rem; font-weight: 800; color: var(--white); }
.stat-num span { color: var(--accent); }
.stat-label { font-size: 0.8rem; color: rgba(255,255,255,0.6); text-transform: uppercase; letter-spacing: 0.5px; }

.hero-visual { position: relative; }
.hero-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.hero-card { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius); padding: 20px; backdrop-filter: blur(4px); transition: transform 0.2s; }
.hero-card:hover { transform: translateY(-3px); background: rgba(255,255,255,0.09); }
.hero-card-icon { font-size: 1.8rem; margin-bottom: 10px; }
.hero-card h3 { font-size: 0.9rem; color: white; font-weight: 600; margin-bottom: 4px; }
.hero-card p { font-size: 0.78rem; color: rgba(255,255,255,0.5); }

/* SECTIONS */
section { padding: 80px 5%; }
.section-inner { max-width: 1200px; margin: 0 auto; }
.section-label { font-size: 0.8rem; font-weight: 600; color: var(--blue); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.section-title { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 800; color: var(--navy); margin-bottom: 16px; letter-spacing: -0.5px; }
.section-sub { font-size: 1.05rem; color: var(--muted); max-width: 560px; margin-bottom: 48px; }

/* SERVICES */
.services-bg { background: var(--bg); }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card { background: white; border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; transition: all 0.25s; }
.service-card:hover { border-color: var(--blue); transform: translateY(-4px); box-shadow: 0 12px 40px rgba(29,78,216,0.1); }
.service-icon { width: 52px; height: 52px; background: #eff6ff; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; margin-bottom: 16px; }
.service-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.service-card p { font-size: 0.88rem; color: var(--muted); line-height: 1.65; }

/* CATALOGUE PREVIEW */
.catalogue-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 24px; }
.product-card { background: white; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: all 0.25s; }
.product-card:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(0,0,0,0.1); border-color: #cbd5e1; }
.product-img { width: 100%; height: 200px; object-fit: cover; background: #f1f5f9; }
.product-img-placeholder { width: 100%; height: 200px; background: linear-gradient(135deg, #e2e8f0, #cbd5e1); display: flex; align-items: center; justify-content: center; font-size: 2.5rem; }
.product-body { padding: 18px; }
.product-body h3 { font-size: 0.95rem; font-weight: 700; color: var(--navy); margin-bottom: 6px; line-height: 1.35; }
.product-body p { font-size: 0.82rem; color: var(--muted); line-height: 1.5; }
.product-tag { display: inline-block; background: #eff6ff; color: var(--blue); font-size: 0.72rem; font-weight: 600; padding: 3px 10px; border-radius: 20px; margin-top: 10px; }

/* CATALOGUE PAGE */
.catalogue-filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 36px; }
.filter-btn { background: white; border: 1.5px solid var(--border); color: var(--muted); padding: 8px 18px; border-radius: 20px; font-size: 0.85rem; font-weight: 500; cursor: pointer; transition: all 0.2s; }
.filter-btn:hover, .filter-btn.active { background: var(--blue); border-color: var(--blue); color: white; }
.catalogue-search { width: 100%; max-width: 400px; padding: 12px 20px; border: 1.5px solid var(--border); border-radius: 8px; font-size: 0.95rem; outline: none; margin-bottom: 32px; transition: border-color 0.2s; }
.catalogue-search:focus { border-color: var(--blue); }

/* WHY US */
.whyus-bg { background: linear-gradient(135deg, var(--navy) 0%, #1a3a6b 100%); color: white; }
.whyus-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.why-item { text-align: center; }
.why-num { font-size: 2.5rem; font-weight: 800; color: var(--accent); margin-bottom: 8px; }
.why-label { font-size: 0.85rem; color: rgba(255,255,255,0.7); text-transform: uppercase; letter-spacing: 0.5px; }

/* BRANDS */
.brands-section { background: white; padding: 48px 5%; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.brands-label { text-align: center; font-size: 0.8rem; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 28px; }
.brands-list { display: flex; flex-wrap: wrap; gap: 16px 32px; justify-content: center; align-items: center; }
.brand-tag { background: var(--bg); border: 1px solid var(--border); padding: 8px 20px; border-radius: 6px; font-size: 0.85rem; font-weight: 600; color: var(--navy); }

/* CTA */
.cta-section { background: var(--blue); padding: 72px 5%; text-align: center; }
.cta-section h2 { font-size: 2rem; font-weight: 800; color: white; margin-bottom: 12px; }
.cta-section p { color: rgba(255,255,255,0.8); margin-bottom: 32px; font-size: 1.05rem; }
.btn-white { background: white; color: var(--blue); padding: 14px 32px; border-radius: 8px; font-weight: 700; text-decoration: none; display: inline-block; transition: all 0.2s; }
.btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }

/* CONTACT */
.contact-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 60px; align-items: start; }
.contact-info h2 { font-size: 2rem; font-weight: 800; color: var(--navy); margin-bottom: 16px; }
.contact-info p { color: var(--muted); margin-bottom: 32px; }
.contact-item { display: flex; gap: 14px; margin-bottom: 22px; align-items: flex-start; }
.contact-icon { width: 44px; height: 44px; background: #eff6ff; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 1.1rem; flex-shrink: 0; }
.contact-item h4 { font-size: 0.85rem; font-weight: 600; color: var(--navy); margin-bottom: 2px; }
.contact-item p { font-size: 0.9rem; color: var(--muted); margin: 0; }

.contact-form { background: white; border: 1px solid var(--border); border-radius: 16px; padding: 36px; box-shadow: 0 4px 24px rgba(0,0,0,0.04); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--navy); margin-bottom: 6px; }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 12px 14px; border: 1.5px solid var(--border); border-radius: 8px; font-size: 0.9rem; color: var(--text); outline: none; transition: border-color 0.2s; font-family: inherit; }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color: var(--blue); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-submit { width: 100%; padding: 14px; background: var(--blue); color: white; border: none; border-radius: 8px; font-size: 1rem; font-weight: 700; cursor: pointer; transition: all 0.2s; }
.form-submit:hover { background: var(--blue-light); }

/* PAGE HERO */
.page-hero { background: linear-gradient(135deg, var(--navy) 0%, #1a3a6b 100%); padding: 120px 5% 64px; }
.page-hero h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; color: white; margin-bottom: 12px; }
.page-hero p { color: rgba(255,255,255,0.75); font-size: 1.05rem; }

/* FOOTER */
footer { background: var(--navy); color: rgba(255,255,255,0.7); padding: 48px 5% 28px; }
.footer-inner { max-width: 1200px; margin: 0 auto; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand p { font-size: 0.88rem; margin-top: 12px; line-height: 1.7; max-width: 280px; }
footer h4 { color: white; font-size: 0.9rem; font-weight: 600; margin-bottom: 16px; }
footer ul { list-style: none; }
footer ul li { margin-bottom: 8px; }
footer ul a { color: rgba(255,255,255,0.6); text-decoration: none; font-size: 0.88rem; transition: color 0.2s; }
footer ul a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; font-size: 0.82rem; }

/* ABOUT */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-img { border-radius: 16px; overflow: hidden; }
.about-img img { width: 100%; height: 400px; object-fit: cover; }
.about-img-placeholder { width: 100%; height: 400px; background: linear-gradient(135deg, #1d4ed8, #0f1f3d); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 5rem; }
.about-list { list-style: none; margin-top: 24px; }
.about-list li { display: flex; gap: 12px; margin-bottom: 14px; font-size: 0.95rem; color: var(--muted); }
.about-list li::before { content: '✓'; color: var(--blue); font-weight: 700; flex-shrink: 0; }

/* PROCESS */
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.process-steps::before { content: ''; position: absolute; top: 28px; left: 60px; right: 60px; height: 2px; background: linear-gradient(90deg, var(--blue), var(--accent)); z-index: 0; }
.step { text-align: center; position: relative; z-index: 1; }
.step-num { width: 56px; height: 56px; background: var(--blue); color: white; font-size: 1.2rem; font-weight: 800; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; }
.step h3 { font-size: 0.95rem; font-weight: 700; color: var(--navy); margin-bottom: 8px; }
.step p { font-size: 0.82rem; color: var(--muted); }

/* MOBILE */
@media (max-width: 900px) {
  nav ul { display: none; }
  .hamburger { display: flex; }
  nav ul.open { display: flex; flex-direction: column; position: fixed; top: 64px; left: 0; right: 0; background: var(--navy); padding: 20px 5%; gap: 20px; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  .whyus-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .process-steps::before { display: none; }
  .hero-stats { gap: 20px; }
  .form-row { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .catalogue-grid { grid-template-columns: 1fr; }
  .whyus-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
}