*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#080b14;--surf:#0f1623;--surf2:#161e30;--bdr:#1e2d45;
  --pri:#6366f1;--acc:#06b6d4;--ok:#10b981;--warn:#f59e0b;
  --txt:#f1f5f9;--muted:#64748b;--card:#0d1320;
}
body{font-family:'Inter',sans-serif;background:var(--bg);color:var(--txt);height:100vh;overflow:hidden;display:flex;flex-direction:column}
.hidden{display:none!important}

/* OVERLAY */
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.8);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:100}
.modal{background:var(--surf);border:1px solid var(--bdr);border-radius:20px;padding:36px;max-width:420px;width:90%;text-align:center}
.modal-logo{font-size:2.5rem;margin-bottom:12px}
.modal h1{font-size:1.6rem;font-weight:700;background:linear-gradient(135deg,var(--pri),var(--acc));-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:6px}
.modal-sub{color:var(--muted);font-size:.82rem;margin-bottom:24px}
.form-group{text-align:left;margin-bottom:16px}
.form-group label{font-size:.78rem;font-weight:500;color:var(--muted);display:block;margin-bottom:6px}
.key-row{display:flex;gap:8px}
.key-row input{flex:1;background:var(--surf2);border:1px solid var(--bdr);border-radius:10px;padding:10px 14px;color:var(--txt);font-size:.85rem;outline:none;font-family:inherit;transition:border-color .2s}
.key-row input:focus{border-color:var(--pri)}
.btn-eye{background:var(--surf2);border:1px solid var(--bdr);border-radius:10px;padding:0 12px;color:var(--muted);cursor:pointer;font-size:1rem}
.get-key-link{display:block;font-size:.75rem;color:var(--acc);margin-top:6px;text-decoration:none}
.get-key-link:hover{text-decoration:underline}
.error-msg{color:#f87171;font-size:.78rem;margin-top:8px;min-height:18px}

/* BUTTONS */
.btn-primary{width:100%;padding:12px;background:linear-gradient(135deg,var(--pri),var(--acc));border:none;border-radius:12px;color:#fff;font-weight:600;font-size:.9rem;cursor:pointer;font-family:inherit;transition:all .2s;display:flex;align-items:center;justify-content:center;gap:8px}
.btn-primary:hover{opacity:.9;transform:translateY(-1px)}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}
.btn-ghost{background:transparent;border:1px solid var(--bdr);border-radius:8px;color:var(--txt);padding:6px 14px;cursor:pointer;font-size:.8rem;font-family:inherit;transition:all .2s}
.btn-ghost:hover:not(:disabled){border-color:var(--pri);color:var(--pri)}
.btn-ghost:disabled{opacity:.4;cursor:not-allowed}
.btn-send{background:linear-gradient(135deg,var(--pri),var(--acc));border:none;border-radius:10px;width:42px;height:42px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff;transition:all .2s;flex-shrink:0}
.btn-send:hover{transform:scale(1.05)}
.btn-replan{background:transparent;border:1px dashed var(--bdr);border-radius:8px;color:var(--muted);padding:6px 14px;cursor:pointer;font-size:.78rem;font-family:inherit;transition:all .2s;margin-top:6px;width:100%}
.btn-replan:hover{border-color:var(--pri);color:var(--pri)}

/* HEADER */
.header{background:var(--surf);border-bottom:1px solid var(--bdr);display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:52px;flex-shrink:0;z-index:10}
.logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1rem}
.logo-text{letter-spacing:-.01em}
.logo-ai{font-size:.65rem;background:linear-gradient(135deg,var(--pri),var(--acc));-webkit-background-clip:text;-webkit-text-fill-color:transparent;font-weight:700;letter-spacing:.1em;padding:2px 6px;border:1px solid var(--bdr);border-radius:4px}
.trip-badge{font-size:.78rem;color:var(--muted);background:var(--surf2);border:1px solid var(--bdr);border-radius:6px;padding:4px 10px}
.header-actions{display:flex;gap:8px}

/* LAYOUT */
.layout{display:grid;grid-template-columns:360px 1fr;flex:1;overflow:hidden}

/* CHAT PANE */
.chat-pane{display:flex;flex-direction:column;border-right:1px solid var(--bdr);background:var(--surf);overflow:hidden}

/* QUICK START */
#quick-start{flex:1;overflow-y:auto;padding:20px}
#quick-start::-webkit-scrollbar{width:4px}
#quick-start::-webkit-scrollbar-thumb{background:var(--bdr);border-radius:2px}
.qs-hero{margin-bottom:20px}
.qs-hero h2{font-size:1.25rem;font-weight:700;margin-bottom:6px;background:linear-gradient(135deg,var(--txt),var(--acc));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.qs-hero p{font-size:.8rem;color:var(--muted)}
.dest-input{width:100%;background:var(--surf2);border:1px solid var(--bdr);border-radius:12px;padding:12px 16px;color:var(--txt);font-size:.9rem;font-family:inherit;outline:none;margin-bottom:12px;transition:border-color .2s}
.dest-input:focus{border-color:var(--pri)}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;margin-bottom:12px}
.param label{font-size:.7rem;color:var(--muted);font-weight:500;display:block;margin-bottom:4px}
.param select{width:100%;background:var(--surf2);border:1px solid var(--bdr);border-radius:8px;padding:8px;color:var(--txt);font-size:.78rem;font-family:inherit;outline:none;cursor:pointer}
.chips-label{font-size:.7rem;color:var(--muted);font-weight:500;margin-bottom:6px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.chip{background:var(--surf2);border:1px solid var(--bdr);border-radius:20px;padding:5px 12px;font-size:.75rem;cursor:pointer;color:var(--muted);font-family:inherit;transition:all .2s}
.chip.active,.chip[aria-pressed="true"]{background:rgba(99,102,241,.2);border-color:var(--pri);color:var(--txt)}

/* CHAT MESSAGES */
.chat-msgs{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:10px}
.chat-msgs::-webkit-scrollbar{width:4px}
.chat-msgs::-webkit-scrollbar-thumb{background:var(--bdr);border-radius:2px}
.msg{max-width:92%;padding:10px 14px;border-radius:12px;font-size:.82rem;line-height:1.55;animation:fadeUp .25s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
.msg-ai{background:var(--surf2);border:1px solid var(--bdr);border-radius:4px 12px 12px 12px;align-self:flex-start}
.msg-user{background:linear-gradient(135deg,var(--pri),#4f46e5);border-radius:12px 4px 12px 12px;align-self:flex-end}
.msg-label{font-size:.65rem;color:var(--muted);margin-bottom:4px;font-weight:600;text-transform:uppercase;letter-spacing:.05em}
.thinking{display:flex;align-items:center;gap:6px;color:var(--acc);font-size:.8rem}
.dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--acc);animation:blink 1.2s infinite}
.dot:nth-child(2){animation-delay:.2s}
.dot:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:0;transform:scale(.8)}40%{opacity:1;transform:scale(1)}}

.chat-input-area{padding:10px 12px;border-top:1px solid var(--bdr);flex-shrink:0}
.chat-form{display:flex;gap:8px;align-items:flex-end}
.chat-input{flex:1;background:var(--surf2);border:1px solid var(--bdr);border-radius:10px;padding:10px 14px;color:var(--txt);font-family:inherit;font-size:.82rem;resize:none;outline:none;transition:border-color .2s}
.chat-input:focus{border-color:var(--pri)}

/* MAP PANE */
.map-pane{position:relative;background:var(--card);display:flex;align-items:center;justify-content:center}
.map-placeholder{display:flex;align-items:center;justify-content:center;height:100%;width:100%}
.map-placeholder-inner{text-align:center;color:var(--muted)}
.map-placeholder-inner span{font-size:3rem;display:block;margin-bottom:8px}
.map-placeholder-inner p{font-size:.85rem}
.map-frame{width:100%;height:100%;border:none;position:absolute;inset:0}
.stats-overlay{position:absolute;top:12px;right:12px;display:flex;flex-direction:column;gap:8px}
.stat-card{background:rgba(8,11,20,.88);backdrop-filter:blur(12px);border:1px solid var(--bdr);border-radius:10px;padding:8px 14px;min-width:120px}
.stat-label{font-size:.62rem;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.stat-val{font-size:1rem;font-weight:700;color:var(--acc)}

/* ITINERARY */
.itinerary{background:var(--surf2);border-top:1px solid var(--bdr);flex-shrink:0;padding:10px 16px;height:190px;overflow:hidden}
.itin-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.itin-title{font-size:.78rem;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.powered{font-size:.7rem;color:var(--muted)}
.day-cards{display:flex;gap:10px;overflow-x:auto;padding-bottom:6px;height:140px}
.day-cards::-webkit-scrollbar{height:3px}
.day-cards::-webkit-scrollbar-thumb{background:var(--bdr);border-radius:2px}
.day-card{min-width:190px;background:var(--card);border:1px solid var(--bdr);border-radius:12px;padding:10px 12px;cursor:pointer;transition:all .2s;flex-shrink:0;overflow:hidden}
.day-card:hover,.day-card.active{border-color:var(--pri);transform:translateY(-2px)}
.day-card.active{background:linear-gradient(135deg,rgba(99,102,241,.12),rgba(6,182,212,.08))}
.day-num{font-size:.62rem;color:var(--acc);font-weight:600;text-transform:uppercase;letter-spacing:.08em}
.day-theme{font-size:.82rem;font-weight:600;margin:2px 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.day-acts{font-size:.7rem;color:var(--muted);margin-bottom:4px}
.day-cost{font-size:.72rem;color:var(--ok);font-weight:500}
.day-bar{height:2px;background:var(--surf);border-radius:2px;overflow:hidden;margin-top:6px}
.day-bar-fill{height:100%;background:linear-gradient(90deg,var(--ok),var(--acc));border-radius:2px;transition:width .8s ease}

/* TOAST */
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--surf2);border:1px solid var(--bdr);border-radius:10px;padding:10px 20px;font-size:.82rem;z-index:200;animation:slideUp .3s ease;white-space:nowrap}
@keyframes slideUp{from{opacity:0;transform:translate(-50%,16px)}to{opacity:1;transform:translate(-50%,0)}}

/* BUDGET ERROR */
.budget-bar-wrap{margin-top:8px}
.budget-row{display:flex;justify-content:space-between;font-size:.72rem;color:var(--muted);margin-bottom:4px}