:root{--bg:#f7f8fa;--surface:#fff;--border:#e8eaed;--text:#1c1f24;--muted:#8a8f98;--accent:#3b6fd4;--accent-soft:#eef3fc}
*{box-sizing:border-box;margin:0;padding:0}
body{font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,system-ui,sans-serif;color:var(--text);background:var(--bg);min-height:100vh}
.container{max-width:1000px;margin:0 auto;padding:48px 24px}
.hidden{display:none!important}

.top{padding-bottom:8px}
.top h1{font-size:30px;font-weight:700;letter-spacing:-.02em}
.top .sub{color:var(--muted);font-size:15px;margin-top:4px}

.layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:24px;align-items:start}

/* ===== Календарь ===== */
.cal{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:24px}
.cal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.month-name{font-size:20px;font-weight:600;text-transform:capitalize}
.arrow{border:1px solid var(--border);background:var(--surface);color:var(--text);width:36px;height:36px;border-radius:8px;font-size:16px;cursor:pointer;transition:background .15s ease,border-color .15s ease}
.arrow:hover{background:var(--accent-soft);border-color:var(--accent)}

.weekdays{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;margin-bottom:8px}
.weekdays span{text-align:center;font-size:12px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}

.grid{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.day{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;height:52px;border-radius:8px;cursor:pointer;font-size:15px;font-weight:500;color:var(--text);transition:background .15s ease}
.day:hover{background:var(--accent-soft)}
.day.empty{pointer-events:none}
.day.today{background:var(--accent);color:#fff;font-weight:600}
.day.today:hover{background:var(--accent)}
.day.selected{background:var(--accent-soft);color:var(--accent);font-weight:600}
.day.selected:hover{background:var(--accent-soft)}
.dot{width:5px;height:5px;border-radius:50%;background:var(--accent)}
.day.today .dot,.day.selected .dot{background:var(--accent)}

.cal-foot{text-align:center;margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}
.today-btn{border:1px solid var(--border);background:var(--surface);color:var(--text);padding:9px 22px;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:background .15s ease}
.today-btn:hover{background:var(--accent-soft);border-color:var(--accent)}

/* ===== Панель дел ===== */
.panel{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:24px;min-height:300px}
.panel-empty{text-align:center;color:var(--muted);padding:64px 10px}
.pe-emoji{font-size:36px;margin-bottom:10px}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px}
.panel-date{font-size:19px;font-weight:600}
.close-btn{border:none;background:var(--bg);width:30px;height:30px;border-radius:8px;font-size:18px;line-height:1;cursor:pointer;color:var(--muted)}
.close-btn:hover{background:var(--accent-soft);color:var(--accent)}

.count{font-size:13px;color:var(--muted);margin-bottom:12px}
.notes{list-style:none;margin-bottom:16px;max-height:320px;overflow-y:auto}
.notes:empty::after{content:"Пока пусто — добавь первое дело ниже";color:#c2c7cf;font-size:14px;display:block;padding:8px 0}

.note{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--border)}
.note:last-child{border-bottom:none}
.chk{width:22px;height:22px;border:1.5px solid #c9ced6;border-radius:6px;background:var(--surface);cursor:pointer;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:13px;color:#fff;transition:background .15s ease,border-color .15s ease}
.chk.on{background:var(--accent);border-color:var(--accent)}
.note-text{flex:1;font-size:15px}
.note.done .note-text{text-decoration:line-through;color:#a9aeb6}
.del{border:none;background:none;color:#c9ced6;font-size:18px;cursor:pointer;padding:4px;line-height:1}
.del:hover{color:#e5484d}

.add-form{display:flex;gap:8px}
.add-form input{flex:1;border:1.5px solid var(--border);border-radius:8px;padding:11px 14px;font-size:15px;font-family:inherit;outline:none;transition:border-color .15s ease}
.add-form input:focus{border-color:var(--accent)}
.add-form button{border:none;background:var(--accent);color:#fff;width:46px;border-radius:8px;font-size:22px;cursor:pointer;flex-shrink:0}
.add-form button:hover{opacity:.88}

@media (max-width:860px){
  .layout{grid-template-columns:1fr}
  .container{padding:32px 16px}
  .top h1{font-size:26px}
  .day{height:46px}
}