/* ======================================
   DNW-AI Global Stylesheet
   ====================================== */

:root {
  --primary:    #0a1f44;
  --secondary:  #1a6cf0;
  --accent:     #f0a500;
  --light:      #f4f7fb;
  --dark:       #0d0d0d;
  --text:       #333;
  --muted:      #6b7280;
  --white:      #ffffff;
  --radius:     8px;
  --shadow:     0 4px 20px rgba(0,0,0,0.10);
  --transition: 0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* ---- UTILITY ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section    { padding: 80px 0; }
.section-light { background: var(--light); }
.section-dark  { background: var(--primary); color: var(--white); }
.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--primary);
}
.section-dark .section-title { color: var(--white); }
.section-subtitle {
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 48px;
  max-width: 600px;
}
.section-dark .section-subtitle { color: rgba(255,255,255,0.7); }
.accent-bar {
  width: 50px; height: 4px;
  background: var(--accent);
  border-radius: 2px;
  margin-bottom: 16px;
}
.btn {
  display: inline-block;
  padding: 12px 30px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--secondary);
  color: var(--white);
  border-color: var(--secondary);
}
.btn-primary:hover { background: #1558c7; border-color: #1558c7; transform: translateY(-2px); }
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}
.btn-outline:hover { background: var(--white); color: var(--primary); transform: translateY(-2px); }
.btn-accent {
  background: var(--accent);
  color: var(--primary);
  border-color: var(--accent);
}
.btn-accent:hover { background: #d4920a; border-color: #d4920a; transform: translateY(-2px); }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 32px; }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 28px; }
.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
  transition: var(--transition);
}
.card:hover { transform: translateY(-6px); box-shadow: 0 12px 36px rgba(0,0,0,0.14); }
.card-icon {
  width: 56px; height: 56px;
  background: var(--light);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  font-size: 1.6rem;
}
.card h3 { font-size: 1.15rem; margin-bottom: 10px; color: var(--primary); }
.card p { color: var(--muted); font-size: 0.95rem; }
.tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(26,108,240,0.10);
  color: var(--secondary);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 12px;
}

/* ---- HEADER / NAV ---- */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--primary);
  box-shadow: 0 2px 16px rgba(0,0,0,0.18);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--white);
}
.logo span { color: var(--accent); }
.logo-icon {
  width: 38px; height: 38px;
  background: var(--secondary);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--white);
}
nav ul {
  display: flex;
  align-items: center;
  gap: 6px;
}
nav ul li a {
  color: rgba(255,255,255,0.85);
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}
nav ul li a:hover,
nav ul li a.active {
  background: rgba(255,255,255,0.1);
  color: var(--white);
}
.nav-cta a {
  background: var(--accent) !important;
  color: var(--primary) !important;
  font-weight: 700 !important;
  padding: 8px 18px !important;
}
.nav-cta a:hover { background: #d4920a !important; }

.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.hamburger span { width: 24px; height: 2px; background: var(--white); border-radius: 2px; transition: var(--transition); }

/* ---- HERO ---- */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, #162d5a 60%, #1a6cf0 100%);
  color: var(--white);
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -80px; right: -80px;
  width: 420px; height: 420px;
  background: rgba(240,165,0,0.08);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -100px; left: -60px;
  width: 340px; height: 340px;
  background: rgba(26,108,240,0.12);
  border-radius: 50%;
}
.hero-content { position: relative; z-index: 1; max-width: 680px; }
.hero-tag {
  display: inline-block;
  background: rgba(240,165,0,0.2);
  color: var(--accent);
  border: 1px solid rgba(240,165,0,0.35);
  padding: 5px 16px;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.22;
  margin-bottom: 22px;
}
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.82);
  margin-bottom: 36px;
  max-width: 540px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 56px;
  flex-wrap: wrap;
}
.stat { }
.stat strong { display: block; font-size: 2rem; font-weight: 800; color: var(--accent); }
.stat span { font-size: 0.85rem; color: rgba(255,255,255,0.65); }

/* ---- FOOTER ---- */
footer {
  background: var(--dark);
  color: rgba(255,255,255,0.7);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 50px;
}
.footer-brand .logo { margin-bottom: 16px; }
.footer-brand p { font-size: 0.9rem; line-height: 1.8; }
.footer-col h4 {
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 0.9rem; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent); }
.footer-contact p { font-size: 0.9rem; margin-bottom: 8px; }
.footer-contact p span { color: var(--white); font-weight: 600; margin-right: 6px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
}
.social-links { display: flex; gap: 12px; }
.social-links a {
  width: 34px; height: 34px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  transition: var(--transition);
}
.social-links a:hover { background: var(--secondary); color: var(--white); }

/* ---- PAGE HERO (inner pages) ---- */
.page-hero {
  background: linear-gradient(135deg, var(--primary) 0%, #162d5a 100%);
  color: var(--white);
  padding: 70px 0 60px;
  text-align: center;
}
.page-hero h1 { font-size: 2.4rem; font-weight: 800; margin-bottom: 14px; }
.page-hero p { color: rgba(255,255,255,0.75); font-size: 1.05rem; max-width: 560px; margin: 0 auto; }
.breadcrumb {
  display: flex; justify-content: center;
  gap: 8px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--accent); }
.breadcrumb a:hover { text-decoration: underline; }

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  nav ul { display: none; flex-direction: column; position: absolute; top: 70px; left: 0; right: 0; background: var(--primary); padding: 20px; gap: 4px; }
  nav ul.open { display: flex; }
  .hamburger { display: flex; }
  .hero { padding: 70px 0 60px; }
  .hero-stats { gap: 28px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}