*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;line-height:1.6;color:#333;background:#f5f5f5}.container{max-width:1200px;margin:0 auto;padding:0 20px}.header{background:#fff;box-shadow:0 2px 4px #0000001a;padding:1rem 0}.header .container{display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.5rem;font-weight:700;color:#2563eb;text-decoration:none}nav{display:flex;gap:2rem;align-items:center}nav a{text-decoration:none;color:#333;transition:color .3s}nav a:hover{color:#2563eb}.main-content{min-height:calc(100vh - 80px);padding:2rem 0}.btn{padding:.75rem 1.5rem;border:none;border-radius:8px;cursor:pointer;font-size:1rem;text-decoration:none;display:inline-block;transition:all .3s}.btn-primary{background:#2563eb;color:#fff}.btn-primary:hover{background:#1d4ed8}.btn-secondary{background:#fff;color:#2563eb;border:2px solid #2563eb}.btn-logout{background:#ef4444;color:#fff}.hero{text-align:center;padding:4rem 0;background:#fff;border-radius:12px;margin-bottom:3rem}.hero h1{font-size:3rem;margin-bottom:1rem;color:#1f2937}.hero p{font-size:1.25rem;color:#6b7280;margin-bottom:2rem}.cta-buttons{display:flex;gap:1rem;justify-content:center}.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.feature{background:#fff;padding:2rem;border-radius:12px;text-align:center}.feature h3{color:#2563eb;margin-bottom:1rem}.auth-page{display:flex;justify-content:center;align-items:center;min-height:70vh}.auth-form{background:#fff;padding:2rem;border-radius:12px;width:100%;max-width:400px;box-shadow:0 4px 6px #0000001a}.auth-form h2{margin-bottom:1.5rem;text-align:center;color:#1f2937}.auth-form input{width:100%;padding:.75rem;margin-bottom:1rem;border:1px solid #d1d5db;border-radius:8px;font-size:1rem}.auth-form button{width:100%}.error{background:#fee2e2;color:#dc2626;padding:.75rem;border-radius:8px;margin-bottom:1rem}.trips-page{max-width:1200px;margin:0 auto}.trips-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.trips-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem}.trip-card{background:#fff;padding:1.5rem;border-radius:12px;box-shadow:0 2px 4px #0000001a;transition:transform .3s}.trip-card:hover{transform:translateY(-4px);box-shadow:0 4px 8px #00000026}.loading{text-align:center;padding:2rem;font-size:1.25rem;color:#6b7280}