:root {
    --sb-primary: #1a6eb5;
    --sb-success: #1a8a4a;
    --sb-danger:  #cc2200;
    --sb-border:  #dee2e6;
    --sb-text:    #212529;
    --sb-muted:   #6c757d;
    --sb-radius:  10px;
    --sb-shadow:  0 2px 12px rgba(0,0,0,.08);
}
#sb-wrap { max-width: 780px; margin: 0 auto; font-family: inherit; color: var(--sb-text); }
#sb-wrap * { box-sizing: border-box; }
.hidden { display: none !important; }
@keyframes sb-fade { from { opacity:0; transform:translateY(6px) } to { opacity:1; transform:none } }
@keyframes sb-spin  { to { transform: rotate(360deg) } }

/* Steps */
.sb-steps { display:flex; flex-wrap:wrap; margin-bottom:28px; border-bottom:2px solid var(--sb-border); padding-bottom:12px; gap:4px; }
.sb-step  { flex:1; text-align:center; padding:8px 4px; font-size:12px; color:var(--sb-muted); border-bottom:3px solid transparent; margin-bottom:-14px; transition:.2s; min-width:50px; }
.sb-step span { display:inline-flex; align-items:center; justify-content:center; width:22px; height:22px; border-radius:50%; background:var(--sb-border); color:var(--sb-muted); font-weight:700; font-size:11px; margin-right:4px; }
.sb-step.active        { color:var(--sb-primary); border-bottom-color:var(--sb-primary); }
.sb-step.active span   { background:var(--sb-primary); color:#fff; }
.sb-step.completed span{ background:var(--sb-success); color:#fff; }

/* Panel */
.sb-panel { animation: sb-fade .3s ease; }
.sb-panel h3 { margin:0 0 16px; font-size:1.2rem; }
.sb-intro { color:var(--sb-muted); margin-bottom:20px; }
.sb-back  { background:none; border:none; padding:0; color:var(--sb-primary); cursor:pointer; font-size:14px; margin-bottom:14px; display:inline-flex; align-items:center; gap:4px; }
.sb-back:hover { text-decoration:underline; }

/* People grid */
.sb-people-grid { display:grid; grid-template-columns:repeat(7,1fr); gap:8px; margin-bottom:24px; }
@media(max-width:500px) { .sb-people-grid { grid-template-columns:repeat(4,1fr); } }
.sb-people-card { border:2px solid var(--sb-border); border-radius:10px; padding:14px 8px; text-align:center; cursor:pointer; font-size:1.3rem; font-weight:700; transition:.2s; background:#fff; }
.sb-people-card span { display:block; font-size:10px; font-weight:400; color:var(--sb-muted); margin-top:2px; }
.sb-people-card:hover    { border-color:var(--sb-primary); }
.sb-people-card.selected { border-color:var(--sb-primary); background:#eef4ff; }

/* Package cards */
.sb-pkg-cards { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin-bottom:24px; }
@media(max-width:600px) { .sb-pkg-cards { grid-template-columns:1fr; } }
.sb-pkg-card { border:3px solid var(--sb-border); border-radius:14px; padding:20px 16px; cursor:pointer; transition:.2s; background:#fff; }
.sb-pkg-card:hover    { border-color:var(--sb-primary); transform:translateY(-2px); box-shadow:0 6px 20px rgba(26,110,181,.12); }
.sb-pkg-card.selected { border-color:var(--sb-primary); background:#eef4ff; }
.sb-pkg-icon    { font-size:32px; margin-bottom:8px; }
.sb-pkg-dur     { font-size:1.3rem; font-weight:700; margin-bottom:4px; }
.sb-pkg-price   { font-size:1.5rem; font-weight:800; color:var(--sb-primary); margin-bottom:8px; }
.sb-pkg-desc    { font-size:12px; color:var(--sb-muted); line-height:1.6; margin-bottom:8px; }
.sb-pkg-deposit { font-size:11px; color:var(--sb-success); font-weight:600; }

/* Badge */
.sb-pkg-badge { display:inline-block; background:#eef4ff; border:1px solid #c5d8f7; color:var(--sb-primary); padding:6px 14px; border-radius:20px; font-size:13px; font-weight:600; margin-bottom:16px; }

/* Calendar */
#sb-calendar { background:#fff; border:1px solid var(--sb-border); border-radius:var(--sb-radius); box-shadow:var(--sb-shadow); overflow:hidden; max-width:100%; }
.sb-cal-nav { display:flex; align-items:center; justify-content:space-between; background:var(--sb-primary); color:#fff; padding:12px 16px; }
.sb-cal-nav button { background:rgba(255,255,255,.2); border:none; color:#fff; width:32px; height:32px; border-radius:50%; cursor:pointer; font-size:16px; transition:.15s; }
.sb-cal-nav button:hover { background:rgba(255,255,255,.35); }
#sb-cal-title { font-weight:700; font-size:1rem; }
.sb-cal-legend { display:flex; gap:16px; padding:8px 16px; font-size:12px; background:#f0f4f8; border-bottom:1px solid var(--sb-border); }
.sb-cal-legend span::before { content:''; display:inline-block; width:10px; height:10px; border-radius:50%; margin-right:4px; vertical-align:middle; }
.l-avail::before  { background:#28a745; }
.l-partial::before{ background:#fd7e14; }
.l-full::before   { background:#dc3545; }
#sb-cal-grid { display:grid !important; grid-template-columns:repeat(7,1fr) !important; text-align:center; }
.sb-cal-dow  { padding:6px 2px; font-size:11px; font-weight:700; color:var(--sb-muted); background:#f8f9fa; border-bottom:1px solid var(--sb-border); }
.sb-cal-day  { padding:10px 4px; font-size:14px; cursor:pointer; border:1px solid transparent; transition:.15s; display:flex !important; align-items:center; justify-content:center; min-height:36px; }
.sb-cal-day.empty,.sb-cal-day.past { color:#ccc; cursor:default; }
.sb-cal-day.avail   { color:#155724; } .sb-cal-day.avail:hover   { background:#d4edda; border-color:#28a745; border-radius:6px; }
.sb-cal-day.partial { color:#856404; } .sb-cal-day.partial:hover { background:#fff3cd; border-color:#ffc107; border-radius:6px; }
.sb-cal-day.full    { color:#721c24; cursor:default; }
.sb-cal-day.selected { background:var(--sb-primary) !important; color:#fff !important; border-radius:6px; font-weight:700; }

/* Time slots */
.sb-chosen-date { font-weight:600; color:var(--sb-primary); margin-bottom:16px; }
#sb-time-slots { display:flex; flex-wrap:wrap; gap:10px; margin-bottom:20px; }
.sb-slot { padding:10px 18px; border:2px solid var(--sb-border); border-radius:8px; cursor:pointer; font-size:15px; font-weight:500; background:#fff; transition:.15s; }
.sb-slot:hover    { border-color:var(--sb-primary); color:var(--sb-primary); }
.sb-slot.selected { border-color:var(--sb-primary); background:var(--sb-primary); color:#fff; }

/* Summary */
#sb-summary { background:#eef4ff; border:1px solid #c5d8f7; border-radius:var(--sb-radius); padding:14px 18px; margin-bottom:20px; font-size:14px; line-height:1.9; }
#sb-summary strong { color:var(--sb-primary); }
.sb-summary-payment { background:#fff8e1; border:1px solid #ffe082; border-radius:8px; padding:10px 14px; margin-top:10px; font-size:14px; color:#5d4037; line-height:1.9; }

/* Fields */
.sb-field-row { display:grid; grid-template-columns:1fr 1fr; gap:16px; margin-bottom:16px; }
@media(max-width:540px) { .sb-field-row { grid-template-columns:1fr; } }
.sb-field { margin-bottom:16px; }
.sb-field label { display:block; font-weight:600; font-size:13px; margin-bottom:5px; }
.sb-field input { width:100%; padding:9px 12px; border:1.5px solid var(--sb-border); border-radius:8px; font-size:14px; background:#fff; font-family:inherit; }
.sb-field input:focus { outline:none; border-color:var(--sb-primary); }
.req { color:var(--sb-danger); }

/* Buttons */
.sb-btn { display:inline-flex; align-items:center; justify-content:center; padding:12px 28px; border:none; border-radius:8px; font-size:15px; font-weight:600; cursor:pointer; transition:.15s; text-decoration:none; }
.sb-btn-primary       { background:var(--sb-primary); color:#fff; }
.sb-btn-primary:hover { background:#155a9e; transform:translateY(-1px); box-shadow:0 4px 12px rgba(26,110,181,.3); }
.sb-btn-primary:disabled { background:#aac4e4; cursor:not-allowed; transform:none; }
.sb-btn-next { margin-top:8px; }

/* Error */
.sb-error { background:#fdecea; border:1px solid #f5c6cb; border-radius:8px; padding:12px 16px; color:var(--sb-danger); margin-bottom:16px; font-size:14px; }

/* Spinner */
.sb-spinner-wrap { text-align:center; padding:60px 20px; }
.sb-spinner { width:48px; height:48px; border:5px solid #e0e0e0; border-top-color:var(--sb-primary); border-radius:50%; animation:sb-spin .8s linear infinite; margin:0 auto 16px; }

/* Result */
.sb-result { text-align:center; padding:48px 24px; border-radius:var(--sb-radius); max-width:520px; margin:0 auto; }
.sb-result-icon { font-size:56px; line-height:1; margin-bottom:16px; }
.sb-result h2 { font-size:1.5rem; margin-bottom:12px; }
.sb-success   { background:#d4edda; border:1px solid #c3e6cb; color:#155724; }
.sb-error-box { background:#fdecea; border:1px solid #f5c6cb; color:#721c24; }
.sb-receipt { text-align:left; background:#fff; border-radius:8px; padding:16px; margin:16px 0; font-size:14px; line-height:2; }
.sb-note { font-size:13px; opacity:.85; }