*{box-sizing:border-box}:root{--bg:#0f172a;--card:#111827;--card2:#1f2937;--text:#f9fafb;--muted:#9ca3af;--border:#374151;--primary:#22c55e;--danger:#ef4444}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}.app-header{padding:20px;background:linear-gradient(135deg,#111827,#1f2937);border-bottom:1px solid var(--border)}.app-header h1{margin:0 0 4px;font-size:1.45rem}.app-header p{margin:0;color:var(--muted)}.container{width:min(760px,100%);margin:0 auto;padding:14px}.card{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:16px;margin-bottom:14px;box-shadow:0 10px 24px rgba(0,0,0,.25)}h2{margin:0 0 12px;font-size:1.1rem}label{display:block;margin-top:12px;margin-bottom:5px;color:var(--muted);font-size:.9rem}input,select,textarea{width:100%;padding:13px;border-radius:12px;border:1px solid var(--border);background:var(--card2);color:var(--text);font-size:1rem}textarea{resize:vertical}button{border:0;border-radius:12px;padding:13px 16px;color:#052e16;background:var(--primary);font-weight:700;font-size:.95rem;cursor:pointer}button.secondary{color:var(--text);background:var(--card2);border:1px solid var(--border)}button.danger{color:white;background:var(--danger)}.row{display:grid;grid-template-columns:1fr auto;gap:10px}.button-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.hidden{display:none!important}.muted{color:var(--muted)}.trip-item{background:var(--card2);border:1px solid var(--border);border-radius:14px;padding:12px;margin-bottom:10px}.trip-item strong{display:block;margin-bottom:4px}.trip-meta{color:var(--muted);font-size:.9rem;line-height:1.45}dialog{border:1px solid var(--border);border-radius:18px;background:var(--card);color:var(--text);width:min(420px,calc(100% - 24px))}dialog::backdrop{background:rgba(0,0,0,.65)}.dialog-form{margin:0}