/* ===== CSS Variables & Reset ===== */
:root {
  --primary: #1e3a5f;
  --primary-dark: #0f1f36;
  --primary-light: #2a4f7f;
  --accent: #2563eb;
  --accent-light: #3b82f6;
  --accent-glow: #06b6d4;
  --text-dark: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --bg-light: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container: 1200px;
  --header-height: 80px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-height); }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  color: var(--text-body);
  background: var(--bg-light);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, h5, h6 { color: var(--text-dark); font-weight: 700; line-height: 1.2; }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
p { margin-bottom: 1rem; }
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-light); }
img { max-width: 100%; height: auto; }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ===== Section Styles ===== */
.section { padding: 100px 0; }
.section-dark { background: linear-gradient(135deg, #0f1f36 0%, #1a365d 50%, #1e3a5f 100%); color: #e2e8f0; }
.section-dark h2 { color: #ffffff; }
.section-label { display: inline-block; font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 2.5px; color: var(--accent); margin-bottom: 12px; }
.section-dark .section-label { color: var(--accent-glow); }
.section-title { margin-bottom: 16px; }
.section-subtitle { font-size: 1.1rem; color: var(--text-muted); max-width: 600px; margin-bottom: 48px; }
.section-dark .section-subtitle { color: var(--text-light); }

/* ===== Header ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226,232,240,0.5);
  transition: var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-md); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.header-logo { display: flex; align-items: center; gap: 8px; }
.header-logo img { height: 44px; width: auto; }
.nav-list { display: flex; align-items: center; gap: 32px; list-style: none; }
.nav-list a { color: var(--text-body); font-size: 0.9rem; font-weight: 500; position: relative; padding: 4px 0; }
.nav-list a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: linear-gradient(135deg, var(--accent), var(--accent-glow)); transition: var(--transition); border-radius: 2px; }
.nav-list a:hover::after, .nav-list a.active::after { width: 100%; }
.nav-cta { padding: 10px 28px; background: var(--accent); color: #fff !important; border-radius: 8px; font-weight: 600; font-size: 0.88rem; transition: var(--transition); white-space: nowrap; border: 1.5px solid var(--accent); }
.nav-cta::after { display: none !important; }
.nav-cta:hover { background: var(--accent-light); border-color: var(--accent-light); transform: translateY(-1px); box-shadow: 0 4px 15px rgba(37,99,235,0.3); }

/* Mobile Nav */
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.nav-toggle span { display: block; width: 28px; height: 2.5px; background: var(--text-dark); border-radius: 2px; transition: var(--transition); }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Hero ===== */
.hero { min-height: 100vh; display: flex; align-items: center; position: relative; background: linear-gradient(135deg, #0f1f36 0%, #1a365d 50%, #1e3a5f 100%); overflow: hidden; padding-top: var(--header-height); }
.hero::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at 20% 50%, rgba(37,99,235,0.15) 0%, transparent 60%), radial-gradient(ellipse at 80% 20%, rgba(6,182,212,0.08) 0%, transparent 50%); pointer-events: none; }
.hero-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(37,99,235,0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(37,99,235,0.03) 1px, transparent 1px); background-size: 60px 60px; mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%); pointer-events: none; }
.hero-orb { position: absolute; border-radius: 50%; filter: blur(80px); pointer-events: none; }
.hero-orb-1 { width: 600px; height: 600px; background: radial-gradient(circle, rgba(37,99,235,0.12), transparent); top: -200px; right: -100px; animation: float 20s ease-in-out infinite; }
.hero-orb-2 { width: 400px; height: 400px; background: radial-gradient(circle, rgba(6,182,212,0.08), transparent); bottom: -100px; left: -100px; animation: float 15s ease-in-out infinite reverse; }
@keyframes float { 0%,100% { transform: translate(0,0) scale(1); } 33% { transform: translate(30px,-30px) scale(1.05); } 66% { transform: translate(-20px,20px) scale(0.95); } }
.hero .container { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 6px 16px; background: rgba(37,99,235,0.12); border: 1px solid rgba(37,99,235,0.2); border-radius: 100px; color: var(--accent-light); font-size: 0.85rem; font-weight: 500; margin-bottom: 24px; }
.hero-badge span { width: 6px; height: 6px; background: var(--accent-glow); border-radius: 50%; animation: pulse-dot 2s infinite; }
@keyframes pulse-dot { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }
.hero h1 { color: #fff; margin-bottom: 20px; }
.hero h1 .highlight { background: linear-gradient(135deg, var(--accent), var(--accent-glow)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: 1.15rem; color: var(--text-light); margin-bottom: 36px; max-width: 520px; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; border-radius: 10px; font-weight: 600; font-size: 0.95rem; border: none; cursor: pointer; transition: var(--transition); text-decoration: none; }
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-glow)); color: #fff !important; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(37,99,235,0.35); }
.btn-outline { background: transparent; color: #e2e8f0 !important; border: 1.5px solid rgba(255,255,255,0.2); }
.btn-outline:hover { border-color: var(--accent); color: #fff !important; background: rgba(37,99,235,0.1); }
.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; }
.stat-card { position: absolute; background: rgba(255,255,255,0.06); backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--radius); padding: 12px 20px; color: #fff; font-size: 0.8rem; animation: float-stat 6s ease-in-out infinite; }
.stat-card-1 { top: 10%; left: -10%; animation-delay: 0s; }
.stat-card-2 { bottom: 20%; right: -5%; animation-delay: 2s; }
.stat-card-3 { top: 60%; left: -5%; animation-delay: 4s; }
.stat-card strong { display: block; font-size: 1.2rem; color: var(--accent-glow); }
.stat-card small { color: var(--text-light); font-size: 0.75rem; }
@keyframes float-stat { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
.hero-svg { width: 100%; max-width: 480px; height: auto; }

/* ===== Clients ===== */
.clients-section { padding: 60px 0; background: #fff; border-bottom: 1px solid var(--border); }
.clients-section .section-label { text-align: center; display: block; }
.clients-grid { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 48px; margin-top: 36px; }
.client-item { display: flex; align-items: center; gap: 8px; color: var(--text-muted); font-size: 0.9rem; font-weight: 500; opacity: 0.6; transition: var(--transition); }
.client-item:hover { opacity: 0.9; }
.client-item svg { width: 28px; height: 28px; opacity: 0.5; }

/* ===== About ===== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-content .about-text { color: var(--text-body); line-height: 1.8; }
.stats-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.stat-item { text-align: center; padding: 20px; background: var(--bg-light); border-radius: var(--radius); border: 1px solid var(--border); }
.stat-item .number { font-size: 2rem; font-weight: 800; background: linear-gradient(135deg, var(--accent), var(--accent-glow)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-item .label { font-size: 0.85rem; color: var(--text-muted); margin-top: 4px; }
.about-visual { position: relative; display: flex; justify-content: center; }
.about-image-wrapper { position: relative; width: 100%; max-width: 440px; aspect-ratio: 4/3; border-radius: var(--radius-lg); overflow: hidden; background: linear-gradient(135deg, #0f1f36, #1e3a5f); display: flex; align-items: center; justify-content: center; }

/* ===== Services ===== */
.services { background: #fff; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card { padding: 36px 28px; border-radius: var(--radius); background: linear-gradient(145deg, #ffffff, #f8fafc); border: 1px solid var(--border); transition: var(--transition); position: relative; overflow: hidden; }
.service-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(135deg, var(--accent), var(--accent-glow)); transform: scaleX(0); transform-origin: left; transition: var(--transition); }
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
.service-card:hover::before { transform: scaleX(1); }
.service-icon { width: 56px; height: 56px; border-radius: 14px; background: rgba(37,99,235,0.08); display: flex; align-items: center; justify-content: center; margin-bottom: 20px; transition: var(--transition); }
.service-card:hover .service-icon { background: linear-gradient(135deg, var(--accent), var(--accent-glow)); }
.service-card:hover .service-icon svg { filter: brightness(0) invert(1); }
.service-icon svg { width: 28px; height: 28px; color: var(--accent); transition: var(--transition); }
.service-card h3 { margin-bottom: 12px; font-size: 1.15rem; }
.service-card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; }
.service-features { margin-top: 16px; list-style: none; }
.service-features li { font-size: 0.85rem; color: var(--text-muted); padding: 6px 0; display: flex; align-items: center; gap: 8px; }
.service-features li::before { content: '✓'; color: var(--accent-glow); font-weight: 700; }

/* ===== Why Us ===== */
.why-us-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.reason-card { display: flex; gap: 20px; padding: 28px; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--radius); transition: var(--transition); }
.reason-card:hover { background: rgba(255,255,255,0.07); border-color: rgba(37,99,235,0.3); transform: translateY(-2px); }
.reason-icon { min-width: 48px; height: 48px; border-radius: 12px; background: rgba(37,99,235,0.15); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.reason-icon svg { width: 24px; height: 24px; color: var(--accent-light); }
.reason-card h4 { color: #fff; margin-bottom: 8px; font-size: 1rem; }
.reason-card p { font-size: 0.88rem; color: var(--text-light); margin: 0; line-height: 1.6; }

/* ===== Testimonials ===== */
.testimonials { background: #fff; }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testimonial-card { padding: 32px; background: linear-gradient(145deg, #ffffff, #f8fafc); border: 1px solid var(--border); border-radius: var(--radius); transition: var(--transition); }
.testimonial-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.testimonial-stars { color: #f59e0b; margin-bottom: 16px; font-size: 0.9rem; }
.testimonial-card blockquote { font-size: 0.9rem; color: var(--text-body); line-height: 1.7; font-style: italic; margin-bottom: 20px; }
.testimonial-author { display: flex; align-items: center; gap: 12px; }
.testimonial-avatar { width: 44px; height: 44px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-glow)); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: 1rem; }
.testimonial-name { font-weight: 600; color: var(--text-dark); font-size: 0.9rem; }
.testimonial-role { font-size: 0.8rem; color: var(--text-muted); }

/* ===== CTA Banner ===== */
.cta-section { padding: 80px 0; background: linear-gradient(135deg, var(--accent), var(--accent-glow)); text-align: center; }
.cta-section h2 { color: #fff; margin-bottom: 16px; }
.cta-section p { color: rgba(255,255,255,0.85); font-size: 1.1rem; margin-bottom: 36px; max-width: 500px; margin-left: auto; margin-right: auto; }
.cta-btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; background: #fff; color: var(--accent) !important; border-radius: 10px; font-weight: 700; font-size: 0.95rem; transition: var(--transition); }
.cta-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(0,0,0,0.2); }
.cta-btn-outline { background: transparent; color: #fff !important; border: 2px solid rgba(255,255,255,0.4); }

/* ===== Contact ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.contact-info h3 { margin-bottom: 20px; }
.contact-info p { color: var(--text-muted); line-height: 1.8; }
.contact-details { margin-top: 36px; display: flex; flex-direction: column; gap: 24px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-item-icon { min-width: 44px; height: 44px; border-radius: 12px; background: rgba(37,99,235,0.08); display: flex; align-items: center; justify-content: center; }
.contact-item-icon svg { width: 22px; height: 22px; color: var(--accent); }
.contact-item-label { font-weight: 600; color: var(--text-dark); font-size: 0.9rem; }
.contact-item-value { font-size: 0.9rem; color: var(--text-muted); }
.contact-form { padding: 40px; background: linear-gradient(145deg, #ffffff, #f8fafc); border: 1px solid var(--border); border-radius: var(--radius-lg); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 500; color: var(--text-dark); margin-bottom: 6px; }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 12px 16px; border: 1.5px solid var(--border); border-radius: 10px; font-size: 0.95rem; font-family: inherit; transition: var(--transition); background: #fff; color: var(--text-dark); }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
.form-group textarea { resize: vertical; min-height: 120px; }
.btn-submit { width: 100%; padding: 14px; background: linear-gradient(135deg, var(--accent), var(--accent-glow)); color: #fff; border: none; border-radius: 10px; font-weight: 600; font-size: 1rem; cursor: pointer; transition: var(--transition); }
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(37,99,235,0.3); }

/* ===== Footer ===== */
.footer { background: var(--primary-dark); padding: 60px 0 30px; color: var(--text-light); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand img { height: 40px; margin-bottom: 16px; }
.footer-brand p { font-size: 0.88rem; line-height: 1.7; color: var(--text-light); }
.footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 20px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: var(--text-light); font-size: 0.88rem; transition: var(--transition); }
.footer-col ul a:hover { color: var(--accent-light); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; }

/* ===== Back to Top ===== */
.back-to-top { position: fixed; bottom: 30px; right: 30px; width: 44px; height: 44px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent-glow)); color: #fff; border: none; cursor: pointer; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transform: translateY(20px); transition: var(--transition); z-index: 999; box-shadow: var(--shadow-md); }
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }

/* ===== Animations ===== */
.animate-on-scroll { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.animate-on-scroll.visible { opacity: 1; transform: translateY(0); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .hero p { margin: 0 auto 36px; }
  .hero-actions { justify-content: center; }
  .hero-visual { margin-top: 40px; }
  .about-grid { grid-template-columns: 1fr; text-align: center; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  :root { --header-height: 64px; }
  .section { padding: 60px 0; }
  .nav-toggle { display: flex; }
  .nav-list { position: fixed; top: var(--header-height); left: 0; right: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(12px); flex-direction: column; padding: 24px; gap: 16px; border-bottom: 1px solid var(--border); transform: translateY(-110%); opacity: 0; transition: var(--transition); pointer-events: none; }
  .nav-list.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .services-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .why-us-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .stat-item { padding: 16px 8px; }
  .stat-item .number { font-size: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .clients-grid { gap: 24px; }
  .contact-form { padding: 24px; }
}
@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .stats-row { grid-template-columns: 1fr; }
  .stat-card { display: none; }
}