:root{
  --bg:#f7f8fa;--fg:#1a1c23;--card:#fff;--muted:#eef0f4;--muted-fg:#6b7280;
  --border:#e4e7ec;--input:#e4e7ec;--ring:#6366f1;--primary:#6366f1;--primary-fg:#fff;
  --accent:#eef2ff;--accent-fg:#4338ca;--danger:#ef4444;
  --p-high:#ef4444;--p-med:#f59e0b;--p-low:#10b981;--radius:12px;
}
:root[data-theme=dark]{
  --bg:#0f1115;--fg:#e7e9ee;--card:#171a21;--muted:#1e222b;--muted-fg:#9aa2b1;
  --border:#262b36;--input:#2b313d;--ring:#818cf8;--primary:#818cf8;--primary-fg:#0f1115;
  --accent:#1e213a;--accent-fg:#c7d2fe;--danger:#f87171;
  --p-high:#f87171;--p-med:#fbbf24;--p-low:#34d399;
}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]):not([data-theme=dark]){
  --bg:#0f1115;--fg:#e7e9ee;--card:#171a21;--muted:#1e222b;--muted-fg:#9aa2b1;
  --border:#262b36;--input:#2b313d;--ring:#818cf8;--primary:#818cf8;--primary-fg:#0f1115;
  --accent:#1e213a;--accent-fg:#c7d2fe;--danger:#f87171;--p-high:#f87171;--p-med:#fbbf24;--p-low:#34d399;}}

*{box-sizing:border-box}
html,body{margin:0}
body{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--fg);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--ring);outline-offset:2px}
kbd{background:var(--muted);border-radius:4px;padding:1px 5px;font-size:11px}
.muted{color:var(--muted-fg)}.pad{padding:12px 0}
h1{font-size:24px;margin:0}h2{font-size:14px}

.btn{display:inline-flex;align-items:center;gap:6px;justify-content:center;border:0;border-radius:8px;font:inherit;font-size:14px;font-weight:500;padding:8px 16px;cursor:pointer;transition:.15s}
.btn-sm{padding:6px 12px;font-size:13px}
.btn-primary{background:var(--primary);color:var(--primary-fg)}.btn-primary:hover{opacity:.9}
.btn-secondary{background:var(--muted);color:var(--fg)}
.btn-ghost{background:transparent;color:var(--fg)}.btn-ghost:hover{background:var(--muted)}
.btn-outline{background:transparent;border:1px solid var(--border);color:var(--fg)}.btn-outline:hover{background:var(--muted)}
.icon-btn{background:transparent;border:0;font-size:18px;cursor:pointer;color:var(--fg);border-radius:8px;padding:6px;line-height:1}
.icon-btn:hover{background:var(--muted)}

.auth-body{display:flex;min-height:100vh;align-items:center;justify-content:center;padding:20px}
.auth-card{width:100%;max-width:360px;background:var(--card);border:1px solid var(--border);border-radius:16px;padding:32px;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.auth-logo{display:flex;align-items:center;gap:8px;justify-content:center;color:var(--primary);font-size:20px;font-weight:700}
.auth-logo span{color:var(--fg)}
.auth-sub{text-align:center;color:var(--muted-fg);font-size:14px;margin:6px 0 22px}
.auth-form{display:flex;flex-direction:column;gap:14px}
.auth-form label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:500}
input,textarea,select{font:inherit;font-size:14px;padding:9px 11px;border:1px solid var(--input);border-radius:8px;background:var(--card);color:var(--fg);width:100%}
textarea{resize:vertical}
.auth-error{background:color-mix(in srgb,var(--danger) 12%,transparent);color:var(--danger);padding:8px 11px;border-radius:8px;font-size:13px;margin:0}
.auth-demo{margin-top:16px;background:var(--muted);border-radius:8px;padding:8px;text-align:center;font-size:12px;color:var(--muted-fg)}
.auth-alt{text-align:center;font-size:14px;color:var(--muted-fg);margin-top:20px}
.auth-alt a{color:var(--primary);font-weight:500}

.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:12px;height:56px;padding:0 16px;background:color-mix(in srgb,var(--card) 85%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.brand{display:flex;align-items:center;gap:8px;color:var(--primary);font-weight:700;font-size:18px}
.brand span{color:var(--fg)}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.search-btn{display:flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--border);border-radius:8px;padding:7px 12px;color:var(--muted-fg);font:inherit;font-size:13px;cursor:pointer}
.search-btn:hover{background:var(--muted)}
.avatar{width:32px;height:32px;border-radius:50%;background:var(--primary);color:var(--primary-fg);border:0;font-weight:600;cursor:pointer}
.profile{position:relative}
.menu{position:absolute;right:0;top:40px;background:var(--card);border:1px solid var(--border);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.12);min-width:200px;padding:6px;z-index:40}
.menu hr{border:0;border-top:1px solid var(--border);margin:6px 0}
.menu-label{padding:6px 10px;font-size:12px;color:var(--muted-fg);display:flex;flex-direction:column}
.menu-label strong{color:var(--fg)}
.menu-item{display:block;width:100%;text-align:left;background:transparent;border:0;font:inherit;font-size:14px;padding:8px 10px;border-radius:6px;cursor:pointer;color:var(--fg)}
.menu-item:hover{background:var(--muted)}

.layout{display:flex;max-width:1080px;margin:0 auto}
.sidebar{position:sticky;top:56px;height:calc(100vh - 56px);width:250px;flex:0 0 250px;overflow-y:auto;border-right:1px solid var(--border);padding:16px}
.nav-head{font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted-fg);font-weight:600;padding:0 8px;margin:16px 0 6px}
.nav{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}
.nav a{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:8px;font-size:14px}
.nav a:hover{background:var(--muted)}
.nav a.active{background:var(--accent);color:var(--accent-fg);font-weight:500}
.ni{width:18px;text-align:center}
.dot{width:10px;height:10px;border-radius:50%;display:inline-block;flex:0 0 auto}
.dot.lg{width:14px;height:14px}
.ltext{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.lcnt{font-size:12px;color:var(--muted-fg)}
.new-list{display:flex;align-items:center;gap:10px;width:100%;background:transparent;border:0;font:inherit;font-size:14px;color:var(--muted-fg);padding:8px 10px;border-radius:8px;cursor:pointer;margin-top:4px}
.new-list:hover{background:var(--muted);color:var(--fg)}

.main{flex:1;min-width:0;padding:24px 28px 96px;max-width:680px;margin:0 auto;width:100%}
.page-head{margin-bottom:20px}.page-head p{color:var(--muted-fg);font-size:14px;margin:4px 0 0}
.list-head{display:flex;align-items:center;justify-content:space-between}
.list-head>div{display:flex;align-items:center;gap:10px}
.tf-section{margin-bottom:22px}
.tf-section h2{color:var(--muted-fg);font-weight:600;margin:0 0 4px}
.tf-section h2.over,.over{color:var(--p-high)}

.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.progress-card,.stat-hero{margin-bottom:20px}
.row{display:flex;justify-content:space-between;align-items:center;font-size:14px;margin-bottom:8px}
.progress{height:10px;background:var(--muted);border-radius:99px;overflow:hidden}
.progress>div{height:100%;background:var(--primary);border-radius:99px;transition:width .5s}

.add-task{display:flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--border);border-radius:10px;padding:6px 10px;margin-bottom:18px}
.add-task:focus-within{outline:2px solid var(--ring)}
.add-task .plus{color:var(--muted-fg)}
.add-input{border:0;background:transparent;flex:1;padding:4px}
.add-input:focus{outline:none}
.add-time{width:auto;flex:0 0 auto;border:0;background:transparent;color:var(--muted-fg);font-size:12px;padding:2px}
.add-time:focus{outline:none}
.add-more{background:transparent;border:0;cursor:pointer;color:var(--muted-fg);font-size:15px}

.task-list{list-style:none;margin:0;padding:0}
.task{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--border)}
.check{flex:0 0 auto;width:20px;height:20px;border:2px solid var(--border);border-radius:6px;background:transparent;cursor:pointer;padding:0;display:flex;align-items:center;justify-content:center}
.check span{width:10px;height:10px;border-radius:2px;background:transparent}
.task.is-done .check{background:var(--primary);border-color:var(--primary)}
.task.is-done .check::after{content:"✓";color:var(--primary-fg);font-size:13px;font-weight:700}
.task-main{flex:1;min-width:0;background:transparent;border:0;text-align:left;cursor:pointer;display:flex;flex-direction:column;gap:2px;color:var(--fg)}
.task-title{font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.task.is-done .task-title{color:var(--muted-fg);text-decoration:line-through}
.task-meta{display:flex;flex-wrap:wrap;gap:4px 10px;font-size:12px;color:var(--muted-fg)}
.chip{display:inline-flex;align-items:center;gap:5px}
.due-over{color:var(--p-high);font-weight:500}
.prio{width:8px;height:8px;border-radius:50%;flex:0 0 auto}
.prio-high{background:var(--p-high)}.prio-medium{background:var(--p-med)}.prio-low{background:var(--p-low)}
.task-menu{background:transparent;border:0;cursor:pointer;color:var(--muted-fg);font-size:18px;padding:2px 6px;border-radius:6px;opacity:0}
.task:hover .task-menu{opacity:1}
.task-menu:hover{background:var(--muted)}

.empty{border:1px dashed var(--border);border-radius:12px;padding:44px 20px;text-align:center}
.empty .et{font-weight:600;margin:0}.empty .ed{color:var(--muted-fg);font-size:14px;margin:6px 0 0}
.done-block{margin-top:8px}
.done-block summary{cursor:pointer;color:var(--muted-fg);font-weight:600;font-size:14px;list-style:none}
.filter-bar{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.filter-bar select{width:auto;min-width:150px}

.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.stat{display:flex;flex-direction:column;gap:4px}
.stat b{font-size:24px}.stat span{font-size:12px;color:var(--muted-fg)}

.cal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:4px}
.cal-dow{text-align:center;font-size:12px;color:var(--muted-fg);padding:4px 0;font-weight:500}
.cal-day{aspect-ratio:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;border:0;background:transparent;border-radius:8px;cursor:pointer;font-size:14px;color:var(--fg)}
.cal-day:hover{background:var(--muted)}
.cal-day.out{opacity:.4}
.cal-day.today{box-shadow:inset 0 0 0 1px var(--ring)}
.cal-day.sel{background:var(--primary);color:var(--primary-fg)}
.cal-dot{width:5px;height:5px;border-radius:50%;background:var(--primary)}
.cal-day.sel .cal-dot{background:var(--primary-fg)}
#cal-tasks{margin-top:18px}

.modal-wrap{position:fixed;inset:0;z-index:60;display:flex;align-items:center;justify-content:center;padding:16px}
.modal-wrap[hidden],.ctx[hidden],.toast[hidden]{display:none}
.modal-bg{position:absolute;inset:0;background:rgba(0,0,0,.5);backdrop-filter:blur(2px)}
.modal{position:relative;background:var(--card);border:1px solid var(--border);border-radius:16px;width:100%;max-width:560px;max-height:90vh;overflow-y:auto;box-shadow:0 12px 40px rgba(0,0,0,.2)}
.modal.sm{max-width:380px}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:18px 20px 0}
.modal-head h3{margin:0;font-size:18px}
.modal-body{padding:16px 20px;display:flex;flex-direction:column;gap:12px}
.modal-body label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:500}
.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.modal-foot{display:flex;gap:8px;justify-content:flex-end;padding:0 20px 18px}
.modal-foot .spacer{flex:1}
.weekdays{display:flex;gap:6px}
.weekdays button{width:32px;height:32px;border-radius:50%;border:0;background:var(--muted);color:var(--muted-fg);cursor:pointer;font-size:12px;font-weight:500}
.weekdays button.on{background:var(--primary);color:var(--primary-fg)}
.sub-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:4px}
.sub-list li{display:flex;align-items:center;gap:8px;font-size:14px}
.sub-list .sc{width:18px;height:18px;border:2px solid var(--border);border-radius:5px;background:transparent;cursor:pointer;flex:0 0 auto}
.sub-list .sc.on{background:var(--primary);border-color:var(--primary)}
.sub-list .st{flex:1}
.sub-list .st.done{text-decoration:line-through;color:var(--muted-fg)}
.sub-list .sd{background:transparent;border:0;color:var(--muted-fg);cursor:pointer}
.sub-add{display:flex;gap:8px}
.swatches{display:flex;gap:8px}
.swatches button{width:28px;height:28px;border-radius:50%;border:2px solid transparent;cursor:pointer}
.swatches button.on{border-color:var(--fg)}

.search-modal{max-width:520px;padding:0;align-self:flex-start;margin-top:10vh}
.search-head{display:flex;align-items:center;gap:8px;padding:14px 16px;border-bottom:1px solid var(--border)}
.search-head input{border:0;background:transparent;flex:1}
.search-head input:focus{outline:none}
.sm-results{list-style:none;margin:0;padding:6px;max-height:50vh;overflow-y:auto}
.sm-results li{display:flex;gap:8px;align-items:center;padding:8px 10px;border-radius:8px;font-size:14px;cursor:pointer}
.sm-results li:hover{background:var(--muted)}
.sm-results .r-title{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sm-results .r-title.done{text-decoration:line-through;color:var(--muted-fg)}
.sm-empty{color:var(--muted-fg);text-align:center;padding:20px;font-size:14px}

.ctx{position:fixed;z-index:70;background:var(--card);border:1px solid var(--border);border-radius:10px;box-shadow:0 8px 24px rgba(0,0,0,.15);padding:6px;min-width:170px}
.ctx button{display:flex;align-items:center;gap:8px;width:100%;text-align:left;background:transparent;border:0;font:inherit;font-size:14px;padding:8px 10px;border-radius:6px;cursor:pointer;color:var(--fg)}
.ctx button:hover{background:var(--muted)}
.ctx button.danger{color:var(--danger)}
.ctx .ctx-label{font-size:11px;color:var(--muted-fg);padding:4px 10px}
.ctx hr{border:0;border-top:1px solid var(--border);margin:4px 0}

.toast{position:fixed;bottom:80px;left:50%;transform:translateX(-50%);z-index:80;background:var(--card);border:1px solid var(--border);border-radius:10px;padding:10px 16px;box-shadow:0 8px 24px rgba(0,0,0,.15);font-size:14px;display:flex;gap:12px;align-items:center}
.toast .ta{color:var(--primary);font-weight:600;cursor:pointer;background:none;border:0;font:inherit}

.menu-toggle,.bottom-nav,.mobile-search,.drawer-overlay{display:none}
@media(max-width:820px){
  .sidebar{position:fixed;left:0;top:56px;z-index:50;background:var(--card);transform:translateX(-100%);transition:.2s}
  .sidebar.open{transform:none;box-shadow:0 8px 40px rgba(0,0,0,.2)}
  .menu-toggle{display:inline-flex}
  .desktop-only{display:none}
  .drawer-overlay{position:fixed;inset:56px 0 0;background:rgba(0,0,0,.4);z-index:40}
  .drawer-overlay:not([hidden]){display:block}
  .mobile-search{display:block;margin-bottom:14px}
  .mobile-search .search-btn{width:100%}
  .bottom-nav{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:40;background:var(--card);border-top:1px solid var(--border);justify-content:space-around;padding:6px 0}
  .bottom-nav a{display:flex;flex-direction:column;align-items:center;font-size:11px;color:var(--muted-fg);gap:2px;padding:2px 10px}
  .bottom-nav a.active{color:var(--primary)}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .main{padding:20px 16px 90px}
}