body{font-family:Arial,sans-serif;margin:0;background:#f5f7fb;color:#1f2937} .wrap{max-width:1180px;margin:0 auto;padding:20px} .topbar{background:#111827;color:#fff}.topbar .wrap{display:flex;justify-content:space-between;align-items:center}.topbar a,.topbar button{color:#fff;background:none;border:none;text-decoration:none;margin-left:16px;cursor:pointer}.card{background:#fff;border-radius:12px;padding:20px;box-shadow:0 2px 10px rgba(0,0,0,.08);margin-bottom:20px}.small-card{max-width:420px;margin:40px auto}.grid{display:grid;grid-template-columns:1fr 2fr;gap:20px}.wide{grid-column:span 1} label{display:block;margin:10px 0 6px;font-weight:700} input,select,button{padding:10px;border:1px solid #d1d5db;border-radius:8px;width:100%;box-sizing:border-box} button{background:#111827;color:#fff;border:none;margin-top:14px;width:auto;padding:10px 16px}.inline-form{display:inline} table{width:100%;border-collapse:collapse} th,td{border-bottom:1px solid #e5e7eb;padding:10px;text-align:left;font-size:14px}.alert{padding:12px 14px;border-radius:10px;margin-bottom:16px}.success{background:#dcfce7}.error{background:#fee2e2}
.page-head{
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:14px;
}
.btn-link{
    display:inline-block;
    background:#111827;
    color:#fff;
    text-decoration:none;
    padding:10px 14px;
    border-radius:8px;
}
.stats-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:16px;
}
.stat-card h3{
    margin-top:0;
    font-size:16px;
}
.stat-number{
    font-size:32px;
    font-weight:700;
    margin-top:10px;
}
@media (max-width: 900px){
    .stats-grid{
        grid-template-columns:repeat(2,1fr);
    }
}
@media (max-width: 600px){
    .stats-grid{
        grid-template-columns:1fr;
    }
}
.schedule-form{
    display:grid;
    gap:12px;
    max-width:520px;
}
textarea{
    width:100%;
    min-height:70px;
    padding:8px;
    border:1px solid #d1d5db;
    border-radius:6px;
    font:inherit;
}
small{
    color:#4b5563;
    line-height:1.4;
}
.session-history-cell{
    background:#f9fafb;
}
.session-history{
    padding:10px 0;
}
.history-item{
    border:1px solid #e5e7eb;
    border-radius:8px;
    padding:10px 12px;
    margin-top:10px;
    background:#fff;
}
.history-item div{
    margin-bottom:4px;
}