*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary: #1976d2;--primary-dark: #1565c0;--secondary: #f57c00;--danger: #d32f2f;--success: #388e3c;--bg: #f5f7fa;--surface: #ffffff;--border: #e0e0e0;--text: #212121;--text-muted: #757575;--radius: 12px;--shadow: 0 2px 8px rgba(0,0,0,.1)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}a{color:var(--primary);text-decoration:none}.container{max-width:640px;margin:0 auto;padding:16px}.page{padding-bottom:80px}.navbar{background:var(--primary);color:#fff;padding:0 16px;display:flex;align-items:center;justify-content:space-between;height:56px;position:sticky;top:0;z-index:100;box-shadow:0 2px 4px #0003}.navbar h1{font-size:1.2rem;font-weight:700}.navbar-actions{display:flex;gap:8px;align-items:center}.navbar a,.navbar button{color:#fff;background:none;border:none;cursor:pointer;font-size:.9rem;padding:6px 10px;border-radius:6px}.navbar a:hover,.navbar button:hover{background:#ffffff26}.bottom-nav{position:fixed;bottom:0;left:0;right:0;background:var(--surface);border-top:1px solid var(--border);display:flex;z-index:100}.bottom-nav a{flex:1;display:flex;flex-direction:column;align-items:center;padding:8px 4px;font-size:.7rem;color:var(--text-muted);gap:2px}.bottom-nav a.active,.bottom-nav a:hover{color:var(--primary)}.bottom-nav .icon{font-size:1.4rem}.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;margin-bottom:12px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border-radius:8px;border:none;cursor:pointer;font-size:.95rem;font-weight:600;transition:opacity .15s}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-dark)}.btn-secondary{background:var(--bg);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background:var(--border)}.btn-danger{background:var(--danger);color:#fff}.btn-success{background:var(--success);color:#fff}.btn-sm{padding:6px 12px;font-size:.82rem}.btn-full{width:100%}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:.85rem;font-weight:600;color:var(--text-muted);margin-bottom:6px}.form-group input,.form-group select,.form-group textarea{width:100%;padding:10px 14px;border:1.5px solid var(--border);border-radius:8px;font-size:.95rem;background:var(--surface);color:var(--text);transition:border-color .15s}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary)}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px}.auth-card{width:100%;max-width:380px;background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);padding:32px 24px}.auth-card h2{text-align:center;margin-bottom:8px;color:var(--primary)}.auth-card .subtitle{text-align:center;color:var(--text-muted);font-size:.85rem;margin-bottom:24px}.alert{padding:10px 14px;border-radius:8px;font-size:.9rem;margin-bottom:12px}.alert-error{background:#fdecea;color:var(--danger);border:1px solid #f5c6c6}.alert-success{background:#edf7ee;color:var(--success);border:1px solid #b8e0ba}.alert-info{background:#e3f2fd;color:var(--primary);border:1px solid #90caf9}.badge{display:inline-block;padding:2px 8px;border-radius:20px;font-size:.75rem;font-weight:600}.badge-open{background:#e8f5e9;color:var(--success)}.badge-full{background:#fff3e0;color:var(--secondary)}.badge-closed{background:#fafafa;color:var(--text-muted)}.trip-card{cursor:pointer;transition:transform .1s}.trip-card:hover{transform:translateY(-2px)}.trip-card .flight{font-size:1rem;font-weight:700;color:var(--primary)}.trip-card .route{font-size:.9rem;color:var(--text-muted);margin:4px 0}.trip-card .meta{display:flex;gap:12px;font-size:.82rem;color:var(--text-muted);flex-wrap:wrap}.trip-card .meta span{display:flex;align-items:center;gap:3px}.trip-card .header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:8px}.trip-card .seats{font-size:.82rem;font-weight:600;color:var(--success)}.trip-card .seats.full{color:var(--secondary)}.stars{display:flex;gap:2px}.star{font-size:1.2rem;cursor:pointer;color:#ccc}.star.filled{color:#ffc107}.chat-page{display:flex;flex-direction:column;height:calc(100vh - 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