:root {
  --primary: #2563eb;
  --secondary: #38bdf8;
  --bg-dark: #0f172a;
  --bg-light: #f8fafc;
  --text-muted: #64748b;
  --radius: 14px;
  --shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

body {
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  background: var(--bg-light);
  color: #1e293b;
  margin: 0;
}

/* Container */
.container {
  width: min(1100px, 90%);
  margin: 0 auto;
}

/* Header */
header {
  background: white;
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.brand {
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

nav.links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

nav.links a {
  color: #334155;
  font-weight: 500;
  transition: color 0.3s;
}

nav.links a:hover {
  color: var(--primary);
}

.menu-btn {
  display: none;
  font-size: 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
}

/* Buttons */
.btn {
  background: var(--primary);
  color: white;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius);
  font-weight: 600;
  transition: 0.3s;
}

.btn:hover {
  background: #1d4ed8;
  transform: translateY(-2px);
}

.btn.secondary {
  background: var(--secondary);
}

.btn.secondary:hover {
  background: #0ea5e9;
}

/* Hero */
.hero {
  padding: 5rem 0;
  text-align: left;
  background: linear-gradient(135deg, #1e3c72, #2a5298);
  color: white;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.hero .badge {
  background: rgba(255, 255, 255, 0.15);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius);
  font-size: 0.85rem;
}

.hero .title {
  font-size: 2.8rem;
  margin: 1rem 0;
  line-height: 1.2;
}

.hero .subtitle {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  color: #e2e8f0;
}

.cta-row {
  display: flex;
  gap: 1rem;
}

.hero-card img {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 100%;
}

/* Sections */
section {
  padding: 4.5rem 0;
}

.section-head {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-head h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.section-head p {
  color: var(--text-muted);
}

/* Grid + Cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.card {
  background: white;
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.2);
}

/* Contact form */
.contact-form input,
.contact-form textarea {
  width: 100%;
  margin: .5rem 0 1rem;
  padding: .8rem 1rem;
  border-radius: var(--radius);
  border: 1px solid #ddd;
  font-size: 1rem;
}

#formMsg {
  margin-top: 1rem;
  color: green;
}

/* Credits */
.credits {
  text-align: center;
  margin-top: 2rem;
}

.credits h2 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.credits p {
  color: var(--text-muted);
}

/* Footer */
footer {
  background: #1e293b;
  color: white;
  padding: 1.5rem 0;
}

.foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.foot-links {
  display: flex;
  gap: .75rem;
}

.foot-links a {
  color: #cbd5e1;
  transition: color 0.3s;
}

.foot-links a:hover {
  color: white;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .cta-row {
    justify-content: center;
  }

  nav.links {
    display: none;
  }

  .menu-btn {
    display: block;
  }
}
@media (max-width: 480px) {
  .hero .title {
    font-size: 2rem;
  }

  .hero .subtitle {
    font-size: 1rem;
  }
}