:root{
    --bw-blue:#287db8;
    --bw-dark:#111;
    --bw-bg:#f4f6f8;
    --bw-card:#fff;
    --bw-border:#e3e7eb;
    --bw-muted:#666d75;
}
*{box-sizing:border-box}
body{
    margin:0;
    font-family:Arial,Helvetica,sans-serif;
    background:var(--bw-bg);
    color:var(--bw-dark);
}
.site-header{
    background:#fff;
    border-bottom:1px solid var(--bw-border);
}
.site-header-inner{
    max-width:1180px;
    margin:0 auto;
    padding:14px 22px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
}
.site-logo{
    display:block;
    width:400px;
    max-width:70vw;
    height:auto;
}
.site-title{
    font-weight:800;
    color:var(--bw-blue);
    white-space:nowrap;
}
main{
    max-width:920px;
    margin:4vh auto;
    padding:22px;
}
.card{
    background:#fff;
    border-radius:18px;
    padding:28px;
    box-shadow:0 12px 35px rgba(0,0,0,.08);
    margin-bottom:18px;
}
.course{
    border:1px solid var(--bw-border);
    border-radius:14px;
    padding:20px;
    margin-top:15px;
}
.bundle{border:2px solid var(--bw-dark)}
.available{background:#e9f8ee;color:#146c35}
.manual{background:#fff6df;color:#825900}
.unavailable{background:#fff1f1;color:#9b1c1c}
.normal{background:#eef4ff;color:#214f92}
.emergency{background:#fff1e8;color:#a34700}
.reserved{background:#eeeeee;color:#444}
.badge{
    display:inline-block;
    padding:8px 11px;
    border-radius:999px;
    font-weight:700;
    margin:6px 6px 0 0;
}
.price{font-size:28px;font-weight:800;margin:8px 0}
.button{
    display:inline-block;
    margin-top:12px;
    background:#111;
    color:#fff;
    text-decoration:none;
    padding:11px 16px;
    border-radius:9px;
    border:0;
    font-weight:700;
    cursor:pointer;
}
.button.call{background:#825900}
.muted{color:var(--bw-muted)}
.grid{
    display:grid;
    grid-template-columns:1fr auto;
    gap:18px;
    align-items:start;
}
.calendar-wrap{
    position:relative;
    width:100%;
    overflow:hidden;
    padding-top:65%;
    border:1px solid var(--bw-border);
    border-radius:14px;
    background:#fff;
}
.calendar-wrap iframe{
    position:absolute;
    inset:0;
    width:100%;
    height:100%;
    border:0;
}
.admin-main{max-width:1180px}
table{width:100%;border-collapse:collapse}
th,td{
    text-align:left;
    padding:12px;
    border-bottom:1px solid #e5e7eb;
    vertical-align:top
}
th{background:#f8f9fa}
.error{background:#fff1f1;color:#9b1c1c;padding:16px;border-radius:12px}
.ok{background:#e9f8ee;color:#146c35;padding:16px;border-radius:12px}
.empty{color:var(--bw-muted)}
@media(max-width:850px){
    .site-header-inner{flex-direction:column;align-items:flex-start}
    .site-title{white-space:normal}
    table,thead,tbody,tr,th,td{display:block}
    thead{display:none}
    tr{border:1px solid #e5e7eb;border-radius:12px;margin-bottom:14px;padding:10px}
    td{border:0;padding:6px}
}
@media(max-width:650px){
    .grid{grid-template-columns:1fr}
    main{padding:14px}
    .card{padding:20px}
}