/* BISTO Global Styles - Light Theme */
:root {
  --header-bg: #1e3a5f;
  --body-bg: #f8fafc;
  --text-color: #000000;
  --text-secondary: #333333;
  --nav-text: #000000;
  --nav-active: #d1d5db;
  --border: #e2e8f0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--body-bg);
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--header-bg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 1000;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-color);
}

.logo img {
  height: 40px;
  width: auto;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-color);
}

.logo-subtitle {
  font-size: 11px;
  color: var(--text-secondary);
}

/* Navigation */
.nav {
  display: flex;
  gap: 4px;
  align-items: center;
}

.nav a {
  font-size: 14px;
  padding: 8px 16px;
  border-radius: 8px;
  color: var(--nav-text);
  text-decoration: none;
  transition: all 0.15s;
  font-weight: 600;
}

.nav a:hover {
  background: var(--nav-active);
}

.nav a.active {
  background: var(--nav-active);
  color: var(--text-color);
}

/* Main Content */
.main {
  padding: 100px 24px 80px;
  max-width: 1200px;
  margin: 0 auto;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 48px 24px;
  background: var(--body-bg);
}

.footer-content {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 12px;
}

.footer-links h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-color);
}

.footer-links a {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: 8px;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: var(--header-bg);
}

.footer-bottom {
  max-width: 1000px;
  margin: 32px auto 0;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
  .nav { display: none; }
  .footer-content { grid-template-columns: 1fr; }
}