:root{
  --primary:#2563eb;
  --primary-dark:#1d4ed8;
  --accent:#06b6d4;
  --bg:#f6f8fb;
  --card:#ffffff;
  --text:#1a1f2b;
  --muted:#6b7280;
  --border:#e5e9f0;
  --success:#16a34a;
  --danger:#dc2626;
  --radius:14px;
}
*{box-sizing:border-box;}
body{margin:0;font-family:'Segoe UI',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);}
.container{max-width:640px;margin:0 auto;padding:0 20px;}

.topbar{background:var(--card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10;}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;height:60px;}
.brand{font-weight:800;font-size:1.2rem;}
.brand span{background:linear-gradient(90deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent;}
.track-link{color:var(--primary);text-decoration:none;font-weight:600;font-size:.9rem;}

.hero{background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);color:#fff;padding:36px 0 48px;text-align:center;}
.hero h1{margin:0 0 8px;font-size:1.6rem;}
.hero p{margin:0;opacity:.9;font-size:.95rem;}

.booking-shell{margin-top:-24px;padding-bottom:60px;}

.steps-bar{display:flex;justify-content:space-between;margin-bottom:18px;padding:0 4px;}
.step-dot{flex:1;text-align:center;font-size:.7rem;color:var(--muted);position:relative;}
.step-dot::before{content:attr(data-step);display:flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:50%;background:#dbe3ee;color:#fff;margin:0 auto 4px;font-weight:700;font-size:.8rem;}
.step-dot.active::before,.step-dot.done::before{background:var(--primary);}
.step-dot span{display:block;}

.card{background:var(--card);border-radius:var(--radius);box-shadow:0 4px 20px rgba(20,30,60,.06);padding:22px;margin-bottom:16px;}
.card h2{margin-top:0;font-size:1.15rem;}
.hidden{display:none !important;}

input,textarea,select{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:10px;font-size:.95rem;margin-bottom:10px;font-family:inherit;}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--primary);}

.row{display:flex;gap:10px;}
.row input{margin-bottom:0;}

.btn{padding:12px 20px;border-radius:10px;border:none;font-weight:700;font-size:.95rem;cursor:pointer;transition:.15s;}
.btn.primary{background:var(--primary);color:#fff;}
.btn.primary:hover{background:var(--primary-dark);}
.btn.primary:disabled{background:#b6c6e8;cursor:not-allowed;}
.btn.ghost{background:transparent;color:var(--muted);}
.step-actions{display:flex;justify-content:space-between;margin-top:14px;}

.msg{font-size:.85rem;margin-top:8px;}
.msg.error{color:var(--danger);}
.msg.success{color:var(--success);}

.services-list .service-item{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--border);}
.services-list .service-item:last-child{border-bottom:none;}
.service-name{font-weight:600;font-size:.95rem;}
.service-desc{color:var(--muted);font-size:.8rem;}
.service-price{color:var(--primary);font-weight:700;font-size:.85rem;margin-top:2px;}
.qty-control{display:flex;align-items:center;gap:8px;}
.qty-control button{width:30px;height:30px;border-radius:8px;border:1px solid var(--border);background:#fff;font-size:1rem;cursor:pointer;}
.qty-control span{min-width:18px;text-align:center;font-weight:700;}

.slots-list{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px;}
.slot-card{border:2px solid var(--border);border-radius:10px;padding:12px;text-align:center;cursor:pointer;}
.slot-card.selected{border-color:var(--primary);background:#eff4ff;}
.slot-card.full{opacity:.45;cursor:not-allowed;}
.slot-time{font-weight:700;font-size:.9rem;}
.slot-remaining{font-size:.75rem;color:var(--muted);margin-top:4px;}

.order-summary .line{display:flex;justify-content:space-between;padding:6px 0;font-size:.9rem;}
.order-summary .total{border-top:1px solid var(--border);margin-top:8px;padding-top:10px;font-weight:800;font-size:1.05rem;}

.pay-method-choice{display:flex;gap:16px;margin:14px 0 6px;font-size:.9rem;}
.pay-method-choice label{display:flex;align-items:center;gap:6px;font-weight:600;}
.pay-method-choice input{width:auto;margin:0;}

.success-icon{width:56px;height:56px;border-radius:50%;background:var(--success);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin:0 auto 12px;}
#step-success{text-align:center;}

.modal{position:fixed;inset:0;background:rgba(10,15,30,.5);display:flex;align-items:center;justify-content:center;z-index:50;padding:20px;}
.modal-inner{background:#fff;border-radius:var(--radius);padding:24px;max-width:400px;width:100%;}
#trackResult{margin-top:10px;font-size:.9rem;}