:root {
     --bg: #0b1020;
     --card: #121a2e;
     --muted: #9aa4b2;
     --text: #e6e9ee;
     --primary: #0ea5e9;
     --danger: #ef4444;
     --success: #10b981;
     --border: #24314d;
}
 *{
    box-sizing:border-box
}
 html,body{
    margin:0;
    padding:0;
    background:var(--bg);
    color:var(--text);
    font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;
    line-height:1.4
}
 a{
    color:var(--primary);
    text-decoration:none
}
 .container{
    max-width:1100px;
    margin:80px auto 40px;
    padding:0 16px
}
 .topbar{
    position:fixed;
    top:0;
    left:0;
    right:0;
    display:flex;
    align-items:center;
    gap:16px;
    padding:12px 16px;
    background:rgba(11,16,32,.8);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--border);
    z-index:1000
}
 .brand{
    font-weight:700
}
 .brand .logo {
    height: 32px;
    width: auto;
    border-radius: 8px;
}
 .nav a,.nav .btn{
    margin-right:8px
}
 .btn{
    border:1px solid var(--border);
    background:transparent;
    color:var(--text);
    padding:3px 10px;
    border-radius:10px;
    cursor:pointer
}
 .btn.primary{
    background:var(--primary);
    color:#041018;
    border-color:transparent
}
 .btn.danger{
    background:var(--danger);
    color:#fff;
    border-color:transparent
}
 .btn.secondary{
    border-color:var(--primary);
    color:var(--primary);
    background:transparent
}
 .btn:disabled{
    opacity:.5;
    cursor:not-allowed
}
 .card{
    background:var(--card);
    border:1px solid var(--border);
    border-radius:16px;
    padding:16px;
    margin-bottom:16px;
    box-shadow:0 8px 30px rgba(0,0,0,.2)
}
 .card.center{
    max-width:420px;
    margin:80px auto
}
 .grid{
    display:grid
}
 .cols-1{
    grid-template-columns:1fr
}
 .md-cols-2{
}
 @media(min-width:900px){
    .md-cols-2{
        grid-template-columns:1fr 1fr
    }
}
 .gap{
    gap:12px
}
 .row{
    display:flex;
    gap:12px;
    align-items:flex-start
}
 .row.between{
    justify-content:space-between;
    align-items:center
}
 .flex{
    display:flex
}
.between{
    justify-content:space-between
}
.center{
    align-items:center
}
 label{
    display:block;
    font-size:14px;
    color:var(--muted)
}
 input,select{
    width:100%;
    padding:10px 12px;
    border-radius:10px;
    background:#0f172a;
    color:var(--text);
    border:1px solid var(--border)
}
 input[type="checkbox"]{
    width:auto
}
 fieldset{
    border:1px dashed var(--border);
    border-radius:12px;
    padding:12px;
    margin:8px 0
}
 legend{
    color:var(--muted);
    padding:0 6px
}
 .list{
    list-style:none;
    padding:0;
    margin:0
}
 .list li{
    padding:10px;
    border-bottom:1px solid var(--border)
}
 .list li:last-child{
    border-bottom:none
}
 .alert{
    padding:10px 12px;
    border-radius:12px;
    margin:8px 0
}
 .alert.success{
    background:rgba(16,185,129,.15);
    border:1px solid rgba(16,185,129,.4)
}
 .alert.danger{
    background:rgba(239,68,68,.15);
    border:1px solid rgba(239,68,68,.4)
}
 .chip{
    display:inline-flex;
    align-items:center;
    gap:6px;
    background:#0f172a;
    border:1px solid var(--border);
    border-radius:999px;
    padding:4px 8px;
    font-size:12px;
    color:var(--muted)
}
 .icon{
    width:16px;
    height:16px;
    vertical-align:middle;
}
 .muted{
    color:var(--muted)
}
 .footer{
    max-width:1100px;
    margin:20px auto;
    padding:0 16px;
    color:var(--muted)
}
 .weekdays{
    display:flex;
    gap:12px;
    flex-wrap:wrap
}
 .cal-grid{
    display:grid;
    grid-template-columns:repeat(7,1fr);
    gap:8px
}
 .cal-head{
    font-weight:bold;
    color:var(--muted)
}
 .cal-cell{
    min-height:110px;
    border:1px solid var(--border);
    border-radius:12px;
    padding:8px;
    background:#0f172a;
    position:relative
}
 .cal-cell .date{
    position:absolute;
    top:6px;
    right:8px;
    font-size:12px;
    color:var(--muted)
}
.cal-cell.empty{
    color:var(--muted)
}
 .tag{
    display:block;
    margin-top:22px;
    padding:4px 6px;
    border-radius:8px;
    background:rgba(14,165,233,.15);
    border:1px solid rgba(14,165,233,.4);
    font-size:12px
}
 .tag.warn{
    background:rgba(239,68,68,.15);
    border-color:rgba(239,68,68,.4)
}
 .view-switch .btn{
    margin-left:6px
}
 .mobile-only{
    display:inline-flex
}
 .desktop-only{
    display:none
}
 @media(min-width:900px){
    .mobile-only{
        display:none
    }
    .desktop-only{
        display:inline-flex
    }
}
 .ml-auto{
    margin-left:auto
}
 details{
    background:#0b132a;
    border:1px dashed var(--border);
    padding:8px;
    border-radius:12px
}
 summary{
    cursor:pointer;
    color:var(--muted)
}