:root { 
    --primary-dark: #0f172a; 
    --water-blue: #0284c7; 
    --cyan-glow: #06b6d4;
    --bg-main: #f8fafc;
    --white: #ffffff;
    --text-color: #334155;
    --shadow-soft: 0 10px 30px -5px rgba(2, 132, 199, 0.1);
    --shadow-strong: 0 20px 40px -10px rgba(6, 182, 212, 0.25);
    --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', system-ui, sans-serif; }
body { background-color: var(--bg-main); color: var(--text-color); line-height: 1.8; font-size: 16px; }
a { text-decoration: none; color: inherit; transition: var(--transition); }

/* Header & Nav */
.top-header { background: var(--primary-dark); color: var(--white); padding: 12px 5%; display: flex; justify-content: space-between; font-size: 14px; border-bottom: 2px solid var(--water-blue); }
.top-header a { color: var(--cyan-glow); font-weight: 700; letter-spacing: 1px; }
.main-header { background: var(--white); padding: 20px 5%; display: flex; justify-content: space-between; align-items: center; box-shadow: var(--shadow-soft); position: sticky; top: 0; z-index: 1000; }
.logo { font-size: 28px; font-weight: 900; color: var(--primary-dark); display: flex; align-items: center; gap: 8px; }
.logo span { color: var(--water-blue); }
.logo-icon { width: 35px; height: 35px; background: linear-gradient(135deg, var(--water-blue), var(--cyan-glow)); border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 20px; }
.nav-links { list-style: none; display: flex; gap: 35px; }
.nav-links li a { font-weight: 700; font-size: 15px; color: var(--primary-dark); text-transform: uppercase; position: relative; }
.nav-links li a::after { content: ''; position: absolute; width: 0; height: 3px; bottom: -6px; left: 0; background: var(--cyan-glow); transition: 0.3s; border-radius: 2px; }
.nav-links li a:hover::after { width: 100%; }

/* Dropdown */
.dropdown { position: relative; }
.dropdown-menu { position: absolute; top: 100%; left: 0; background: var(--white); min-width: 280px; box-shadow: var(--shadow-strong); border-radius: 12px; opacity: 0; visibility: hidden; transform: translateY(20px); transition: 0.3s; list-style: none; padding: 15px 0; z-index: 1001; border-top: 4px solid var(--water-blue); }
.dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-menu li { border-bottom: 1px solid #f1f5f9; } .dropdown-menu li:last-child { border-bottom: none; }
.dropdown-menu li a { display: block; padding: 12px 25px; color: var(--primary-dark); font-weight: 600; text-transform: none; }
.dropdown-menu li a:hover { background: #f0f9ff; color: var(--water-blue); padding-left: 32px; }

/* Hero Section */
.hero-slider { background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(2, 132, 199, 0.85)), url('tesisat-bg.jpg') center/cover; padding: 140px 5%; min-height: 70vh; display: flex; align-items: center; }
.slider-content { max-width: 800px; color: var(--white); }
.badge { display: inline-block; background: rgba(6, 182, 212, 0.2); border: 1px solid var(--cyan-glow); color: var(--cyan-glow); padding: 8px 16px; border-radius: 30px; font-weight: bold; margin-bottom: 20px; font-size: 14px; letter-spacing: 1px; }
.hero-slider h1 { font-size: 58px; font-weight: 900; line-height: 1.1; margin-bottom: 25px; }
.hero-slider p { font-size: 20px; color: #cbd5e1; margin-bottom: 40px; font-weight: 300; max-width: 90%; }
.btn-primary { background: linear-gradient(135deg, var(--water-blue), var(--cyan-glow)); color: var(--white); padding: 18px 45px; border-radius: 50px; font-size: 18px; font-weight: 800; display: inline-block; box-shadow: var(--shadow-strong); }
.btn-primary:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 25px 50px -12px rgba(6, 182, 212, 0.5); }

/* Tech Grid / Services */
.section-title { font-size: 40px; color: var(--primary-dark); margin-bottom: 60px; text-align: center; font-weight: 900; letter-spacing: -1px; }
.tech-section { padding: 100px 5%; }
.tech-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 40px; }
.tech-card { background: var(--white); border-radius: 20px; padding: 50px 40px; box-shadow: var(--shadow-soft); transition: var(--transition); position: relative; overflow: hidden; border: 1px solid #e2e8f0; }
.tech-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 5px; background: linear-gradient(90deg, var(--water-blue), var(--cyan-glow)); transform: scaleX(0); transform-origin: left; transition: var(--transition); }
.tech-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-strong); }
.tech-card:hover::before { transform: scaleX(1); }
.tech-icon { width: 80px; height: 80px; background: #f0f9ff; border-radius: 20px; display: flex; align-items: center; justify-content: center; font-size: 35px; color: var(--water-blue); margin-bottom: 30px; }
.tech-card h3 { font-size: 24px; color: var(--primary-dark); margin-bottom: 15px; font-weight: 800; }

/* Info Banner */
.info-banner { background: var(--primary-dark); color: var(--white); padding: 80px 5%; display: flex; align-items: center; justify-content: space-between; border-radius: 30px; margin: 0 5% 100px; box-shadow: var(--shadow-strong); position: relative; overflow: hidden; }
.info-banner::after { content: ''; position: absolute; right: -10%; top: -50%; width: 500px; height: 500px; background: radial-gradient(circle, rgba(6,182,212,0.1) 0%, rgba(15,23,42,0) 70%); border-radius: 50%; }
.info-text h2 { font-size: 36px; font-weight: 900; margin-bottom: 15px; }
.info-text p { font-size: 18px; color: #94a3b8; }
.btn-outline-light { border: 2px solid var(--cyan-glow); color: var(--cyan-glow); padding: 16px 40px; border-radius: 50px; font-weight: 800; font-size: 18px; z-index: 2; }
.btn-outline-light:hover { background: var(--cyan-glow); color: var(--primary-dark); }

/* Footer */
.main-footer { background: var(--primary-dark); color: #f8fafc; padding: 80px 5% 30px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 50px; margin-bottom: 60px; }
.footer-col h3 { color: var(--white); margin-bottom: 25px; font-size: 22px; font-weight: 800; position: relative; padding-bottom: 10px; }
.footer-col h3::after { content: ''; position: absolute; left: 0; bottom: 0; width: 40px; height: 3px; background: var(--cyan-glow); border-radius: 2px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 15px; display: flex; align-items: center; gap: 10px; color: #cbd5e1; }
.footer-col ul li a:hover { color: var(--cyan-glow); }
.footer-bottom { text-align: center; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 25px; font-size: 15px; color: #64748b; }

/* Sub Pages */
.page-header { background: var(--primary-dark); padding: 100px 5%; text-align: center; color: var(--white); position: relative; }
.page-header::before { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 5px; background: linear-gradient(90deg, var(--water-blue), var(--cyan-glow)); }
.page-header h1 { font-size: 48px; font-weight: 900; margin-bottom: 15px; }
.content-wrapper { max-width: 1100px; margin: 80px auto; padding: 0 5%; }
.pro-text { font-size: 18px; color: #475569; margin-bottom: 30px; text-align: justify; }
.pro-text strong { color: var(--primary-dark); }

/* Forms & Map */
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.glass-panel { background: var(--white); padding: 50px; border-radius: 24px; box-shadow: var(--shadow-soft); border: 1px solid #e2e8f0; }
.glass-panel input, .glass-panel textarea { width: 100%; padding: 18px; margin-bottom: 25px; border: 2px solid #e2e8f0; border-radius: 12px; background: #f8fafc; font-size: 16px; outline: none; transition: var(--transition); }
.glass-panel input:focus, .glass-panel textarea:focus { border-color: var(--water-blue); background: var(--white); box-shadow: 0 0 0 4px rgba(2, 132, 199, 0.1); }
.btn-submit { background: var(--primary-dark); color: var(--white); width: 100%; padding: 20px; border: none; border-radius: 12px; font-size: 18px; font-weight: 800; cursor: pointer; transition: var(--transition); }
.btn-submit:hover { background: var(--water-blue); box-shadow: var(--shadow-soft); }
.map-container { border-radius: 24px; overflow: hidden; height: 100%; min-height: 400px; box-shadow: var(--shadow-soft); border: 1px solid #e2e8f0; }
.map-container iframe { width: 100%; height: 100%; border: none; }