:root{
  --bg:#0b1020; --card:#121a33; --text:#e9eef7; --muted:#9fb0c9; --accent:#5bbad5; --border:rgba(255,255,255,.08)
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;font-family:system-ui,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:linear-gradient(180deg,rgba(18,26,51,.9),rgba(18,26,51,.6));border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10;backdrop-filter:blur(6px)}
.topbar h1{margin:0;font-size:18px;letter-spacing:.3px}
.topbar .left button{margin-right:6px}
.view-switch button{margin-left:6px}

button{padding:8px 10px;border-radius:10px;background:var(--card);border:1px solid var(--border);color:var(--text);cursor:pointer}
button:hover{border-color:var(--accent)}
button.active{border-color:var(--accent);box-shadow:0 0 0 2px rgba(91,186,213,.25) inset}

#calendar{max-width:1300px;margin:16px auto;display:grid;gap:16px;padding:0 12px}
.month{background:var(--card);border:1px solid var(--border);border-radius:14px;overflow:hidden}
.month-header{display:flex;justify-content:space-between;align-items:center;padding:10px 12px;border-bottom:1px solid var(--border);font-weight:600}
.month-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:0}
.weekday{padding:8px 6px;text-align:center;color:var(--muted);font-size:12px;border-bottom:1px solid var(--border);background:rgba(255,255,255,.02)}
.day{min-height:92px;border-right:1px solid var(--border);border-bottom:1px solid var(--border);padding:6px;position:relative}
.day:nth-child(7n){border-right:none}
.day .date{font-size:12px;color:var(--muted)}
.day.out{opacity:.45}
.day.today{outline:2px solid var(--accent);outline-offset:-2px;border-radius:6px}
.events{margin-top:4px;display:flex;flex-direction:column;gap:4px}
.event{background:rgba(91,186,213,.2);border:1px solid rgba(91,186,213,.5);color:var(--text);border-radius:8px;padding:2px 6px;font-size:12px;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.event.timed::before{content:"⏱ ";opacity:.8}
.event.more{background:transparent;border:none;color:var(--muted);cursor:default}
.day:hover{background:rgba(255,255,255,.02)}
.day.sel { 
  background: rgba(91,186,213,.15);
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  border-radius: 6px;
}
.day.sel .date { color: #fff; }