*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#f6f7fb;--surface:#fff;--surface-2:#f8f9fc;--text:#171923;--muted:#737887;
  --border:#e8eaf0;--primary:#5b5ce2;--primary-dark:#4b4cc9;--danger:#e05252;
  --shadow:0 18px 45px rgba(28,31,52,.08);--radius:18px;
}
[data-theme="dark"]{
  --bg:#0f1117;--surface:#171a22;--surface-2:#1d2029;--text:#f2f3f7;--muted:#9a9eac;
  --border:#2a2e39;--shadow:0 18px 45px rgba(0,0,0,.25);
}
body{font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}
button,input,select{font:inherit}
button{cursor:pointer}
.app-shell{display:flex;min-height:100vh}
.sidebar{position:fixed;inset:0 auto 0 0;width:255px;background:var(--surface);border-right:1px solid var(--border);padding:25px 16px;display:flex;flex-direction:column;z-index:20}
.brand{display:flex;align-items:center;gap:11px;padding:0 10px 30px}
.brand-mark{width:38px;height:38px;border-radius:11px;background:var(--primary);color:#fff;display:grid;place-items:center;font-size:21px;font-weight:800}
.brand strong{display:block;font-size:17px}.brand span{display:block;color:var(--muted);font-size:11px;margin-top:2px}
.main-nav{display:grid;gap:5px}.nav-item,.category-item{border:0;background:transparent;color:var(--muted);display:flex;align-items:center;gap:12px;width:100%;padding:11px 12px;border-radius:11px;text-align:left;transition:.2s}
.nav-item span:first-child{width:19px;text-align:center}.nav-item b{margin-left:auto;font-size:11px;background:var(--surface-2);padding:3px 7px;border-radius:20px;color:var(--muted)}
.nav-item:hover,.category-item:hover{background:var(--surface-2);color:var(--text)}.nav-item.active{background:rgba(91,92,226,.1);color:var(--primary);font-weight:700}.nav-item.active b{background:rgba(91,92,226,.13);color:var(--primary)}
.sidebar-section{margin-top:28px}.section-label{text-transform:uppercase;font-size:10px;font-weight:800;letter-spacing:1.1px;color:#9a9eaa;padding:0 12px 9px}
.category-item{font-size:14px}.dot{width:8px;height:8px;border-radius:50%;display:inline-block}.work{background:#5b5ce2}.study{background:#e9a63b}.personal{background:#39aa78}.other{background:#a36bd6}
.sidebar-tip{margin-top:auto;padding:14px;background:var(--surface-2);border:1px solid var(--border);border-radius:14px;display:flex;gap:10px;align-items:flex-start}.sidebar-tip>span{font-weight:800;color:var(--primary)}.sidebar-tip strong{display:block;font-size:12px}.sidebar-tip small{display:block;color:var(--muted);font-size:10px;margin-top:3px}
.main-content{width:calc(100% - 255px);margin-left:255px}.topbar{height:72px;background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:14px;padding:0 34px;position:sticky;top:0;z-index:10}
.search-wrap{height:42px;max-width:550px;width:100%;background:var(--surface-2);border:1px solid var(--border);border-radius:12px;display:flex;align-items:center;gap:9px;padding:0 12px;color:var(--muted)}.search-wrap input{width:100%;border:0;outline:0;background:transparent;color:var(--text)}.search-wrap kbd{border:1px solid var(--border);border-radius:5px;padding:1px 6px;font-size:11px;color:var(--muted)}
.icon-btn,.menu-btn,.mobile-close{border:1px solid var(--border);background:var(--surface);color:var(--text);width:40px;height:40px;border-radius:10px}.icon-btn{margin-left:auto}.menu-btn,.mobile-close{display:none}
.content{max-width:1150px;margin:0 auto;padding:34px}
.hero{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:25px}.eyebrow{font-size:10px;letter-spacing:1.5px;font-weight:800;color:var(--primary);margin-bottom:8px}.hero h1{font-size:31px;letter-spacing:-.8px}.hero-subtitle{color:var(--muted);margin-top:7px;font-size:14px}
.primary-btn,.secondary-btn,.danger-btn,.text-btn{border:0;border-radius:10px;padding:10px 15px;font-weight:700;transition:.18s}.primary-btn{background:var(--primary);color:#fff}.primary-btn:hover{background:var(--primary-dark);transform:translateY(-1px)}.secondary-btn{background:var(--surface);border:1px solid var(--border);color:var(--text)}.secondary-btn:hover{background:var(--surface-2)}.danger-btn{background:rgba(224,82,82,.1);color:var(--danger)}.text-btn{background:transparent;color:var(--muted);padding:6px}.text-btn:hover{color:var(--danger)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:15px;padding:18px;display:flex;align-items:center;gap:13px;box-shadow:0 5px 20px rgba(20,25,50,.025)}.stat-icon{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;font-weight:800}.blue{background:#ececff;color:#5657d9}.amber{background:#fff5df;color:#b77912}.green{background:#e8f8f0;color:#27825c}.purple{background:#f2eaff;color:#8550bb}.stat-card span{display:block;font-size:11px;color:var(--muted)}.stat-card strong{font-size:22px;margin-top:2px;display:block}
.progress-card{background:var(--surface);border:1px solid var(--border);border-radius:15px;margin-top:14px;padding:17px 19px}.progress-top{display:flex;justify-content:space-between;align-items:center;font-size:13px}.progress-top span{display:block;color:var(--muted);font-size:11px;margin-top:3px}.progress-track{height:7px;background:var(--surface-2);border-radius:20px;margin-top:13px;overflow:hidden}.progress-bar{height:100%;width:0;background:var(--primary);border-radius:20px;transition:width .3s}
.task-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);margin-top:22px;overflow:hidden}.panel-head{padding:22px 22px 16px;display:flex;justify-content:space-between;align-items:center;gap:15px}.panel-head h2{font-size:18px}.panel-head p{font-size:12px;color:var(--muted);margin-top:4px}.panel-actions{display:flex;gap:8px}.panel-actions select,.add-task select,.add-task input[type=date]{border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:9px;padding:9px 10px;outline:0}
.add-task{margin:0 22px 12px;display:grid;grid-template-columns:1fr 105px 110px 145px auto;gap:8px}.add-task input{min-width:0;border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:10px;padding:11px 13px;outline:0}.add-task input:focus,.add-task select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(91,92,226,.1)}
.bulk-bar{display:none;align-items:center;justify-content:space-between;margin:0 22px 12px;padding:10px 12px;background:rgba(91,92,226,.07);border-radius:10px;color:var(--muted);font-size:12px}.bulk-bar.show{display:flex}.bulk-bar>div{display:flex;gap:7px}
.task-list{border-top:1px solid var(--border)}.task{display:grid;grid-template-columns:25px 1fr auto;gap:11px;align-items:center;padding:15px 22px;border-bottom:1px solid var(--border);transition:.15s}.task:hover{background:var(--surface-2)}.task.selected{background:rgba(91,92,226,.045)}
.check{width:20px;height:20px;min-width:20px;min-height:20px;appearance:none;-webkit-appearance:none;margin:0;padding:0;border:2px solid #aeb4c2;border-radius:6px;background:var(--surface);display:grid;place-items:center;cursor:pointer;position:relative;transition:.2s ease}.check:hover{border-color:var(--primary);box-shadow:0 0 0 4px rgba(91,92,226,.12)}.check:checked{background:var(--primary);border-color:var(--primary)}.check:checked::after{content:"";width:5px;height:10px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg) translate(-1px,-1px)}.check:active{transform:scale(.92)}.task.completed .check{background:var(--primary);border-color:var(--primary);opacity:1}.task-main{min-width:0}.task-title{font-size:14px;font-weight:650;word-break:break-word}.task.completed .task-title{text-decoration:line-through;color:var(--muted)}.task-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:5px;color:var(--muted);font-size:10px}.tag{padding:3px 7px;border-radius:20px;background:var(--surface-2)}.priority{font-weight:700}.priority.high{color:#d44d4d}.priority.medium{color:#bd821e}.priority.low{color:#31825f}.overdue{color:var(--danger);font-weight:700}
.task-actions{display:flex;gap:4px;opacity:0;transition:.15s}.task:hover .task-actions,.task:focus-within .task-actions{opacity:1}.task-action{border:0;background:transparent;color:var(--muted);width:30px;height:30px;border-radius:8px}.task-action:hover{background:var(--surface);color:var(--text)}.task-action.delete:hover{color:var(--danger)}
.edit-input{width:100%;border:1px solid var(--primary);border-radius:7px;background:var(--surface);color:var(--text);padding:6px 8px;outline:0}
.empty-state{text-align:center;padding:55px 20px}.empty-icon{width:52px;height:52px;margin:0 auto 13px;border-radius:50%;background:rgba(91,92,226,.1);color:var(--primary);display:grid;place-items:center;font-size:24px}.empty-state h3{font-size:16px}.empty-state p{color:var(--muted);font-size:12px;margin:6px 0 15px}.hidden{display:none!important}
.panel-footer{display:flex;justify-content:space-between;align-items:center;padding:13px 22px;color:var(--muted);font-size:11px}.app-footer{text-align:center;padding:24px;color:var(--muted);font-size:10px;display:flex;justify-content:center;gap:8px}
.toast{position:fixed;right:25px;bottom:25px;background:#20232d;color:#fff;padding:11px 15px;border-radius:10px;font-size:12px;box-shadow:var(--shadow);transform:translateY(20px);opacity:0;pointer-events:none;transition:.25s;z-index:50}.toast.show{transform:translateY(0);opacity:1}
.overlay{display:none}.mobile-close{position:absolute;right:12px;top:12px;font-size:24px}

@media(max-width:1000px){.stats-grid{grid-template-columns:repeat(2,1fr)}.add-task{grid-template-columns:1fr 1fr}.add-task .primary-btn{grid-column:1/-1}.content{padding:25px}.topbar{padding:0 25px}}
@media(max-width:760px){
  .sidebar{transform:translateX(-100%);transition:.25s;box-shadow:20px 0 50px rgba(0,0,0,.12)}.sidebar.open{transform:translateX(0)}.mobile-close,.menu-btn{display:block}.menu-btn{flex:none}.overlay.show{display:block;position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:15}.main-content{width:100%;margin-left:0}.topbar{padding:0 16px}.content{padding:22px 15px}.hero{align-items:flex-start;flex-direction:column}.hero h1{font-size:27px}.hero .primary-btn{width:100%}.stats-grid{grid-template-columns:1fr 1fr;gap:9px}.stat-card{padding:14px}.stat-icon{width:34px;height:34px}.stat-card strong{font-size:19px}.panel-head{align-items:flex-start;flex-direction:column}.panel-actions{width:100%;justify-content:space-between}.panel-actions>*{flex:1}.add-task{grid-template-columns:1fr 1fr;margin:0 15px 12px}.add-task input:first-child{grid-column:1/-1}.add-task .primary-btn{grid-column:1/-1}.task{padding:14px 15px}.task-actions{opacity:1}.task-actions .task-action:nth-child(1){display:none}
}
@media(max-width:470px){.stats-grid{grid-template-columns:1fr 1fr}.stat-card{gap:8px}.stat-card span{font-size:10px}.add-task{grid-template-columns:1fr}.add-task input:first-child,.add-task .primary-btn{grid-column:auto}.panel-footer{padding:12px 15px}.hero-subtitle{font-size:13px}.search-wrap kbd{display:none}}