/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue-700: #1a56db;
  --blue-800: #1e40af;
  --blue-50: #eff6ff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-600: #475569;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  color: var(--gray-800);
  line-height: 1.6;
  background: #fff;
}

a { color: var(--blue-700); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.container { max-width: 960px; margin: 0 auto; padding: 0 1.5rem; }

/* Header */
header {
  background: #fff;
  border-bottom: 1px solid var(--gray-100);
  padding: 1rem 0;
}
header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
header img { height: 44px; width: auto; }
nav { display: flex; gap: 1.5rem; }
nav a {
  color: var(--gray-600);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.15s;
}
nav a:hover, nav a.active { color: var(--blue-700); text-decoration: none; }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--blue-800), var(--blue-700));
  color: #fff;
  padding: 4rem 0;
  text-align: center;
}
.hero h1 { font-size: 2.2rem; margin-bottom: 1rem; font-weight: 700; }
.hero p { font-size: 1.15rem; opacity: 0.9; max-width: 600px; margin: 0 auto 2rem; }
.btn {
  display: inline-block;
  background: #fff;
  color: var(--blue-700);
  padding: 0.75rem 2rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 1rem;
  transition: transform 0.15s, box-shadow 0.15s;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); text-decoration: none; }

/* Sections */
section { padding: 3.5rem 0; }
section h2 { font-size: 1.6rem; margin-bottom: 1.5rem; color: var(--gray-900); }

/* Cards grid */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem; }
.card {
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: 8px;
  padding: 1.75rem;
}
.card h3 { font-size: 1.15rem; margin-bottom: 0.5rem; color: var(--blue-800); }
.card p { color: var(--gray-600); font-size: 0.95rem; }

/* About page */
.content { max-width: 680px; }
.content p { margin-bottom: 1rem; color: var(--gray-600); }
.content ul { margin: 0.5rem 0 1.5rem 1.5rem; color: var(--gray-600); }
.content li { margin-bottom: 0.35rem; }

/* Contact */
.contact-info { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.5rem; }
.contact-block h3 { font-size: 1.05rem; margin-bottom: 0.5rem; color: var(--blue-800); }
.contact-block p { color: var(--gray-600); font-size: 0.95rem; }

/* Footer */
footer {
  border-top: 1px solid var(--gray-100);
  padding: 2rem 0;
  text-align: center;
  color: var(--gray-600);
  font-size: 0.85rem;
}