/* Base Styles */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', system-ui, sans-serif; line-height: 1.6; color: #333; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { background-color: #1e3a5f; color: white; padding: 1rem 0; }
.header-content { display: flex; justify-content: space-between; align-items: center; }
.logo a { color: white; text-decoration: none; font-size: 1.5rem; }
.main-nav a { color: #ecf0f1; text-decoration: none; margin-left: 1.5rem; }
.main-nav a:hover { color: #fdb913; }

/* Buttons */
.btn { display: inline-block; padding: 8px 16px; text-decoration: none; border-radius: 4px; }
.btn-signin { background: transparent; border: 1px solid white; color: white; }
.btn-signup { background: #fdb913; color: #1e3a5f; margin-left: 10px; }
.btn-dashboard { background: #27ae60; color: white; }
.btn-logout { background: #e74c3c; color: white; margin-left: 10px; }
.btn-large { padding: 12px 30px; font-size: 1.2rem; }

/* Feature Grid */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; margin-top: 2rem; }
.feature-card { background: #f8f9fa; padding: 2rem; border-radius: 8px; }
.feature-card a { color: #1e3a5f; font-weight: bold; text-decoration: none; }

/* Footer */
.site-footer { background: #0a2a44; color: white; text-align: center; padding: 2rem 0; margin-top: 3rem; }