:root{
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--text); background:var(--page); line-height:1.5;
  --page:#f8fafd; --surface:#fff; --surface-alt:#fafbfc; --hover:#f1f3f4;
  --text:#202124; --muted:#6b7280; --border:#e1e5eb; --input:#fff;
  --accent:#4b5563; --accent-soft:#eceff1; --accent-strong:#111827;
  --danger:#b3261e; --shadow:rgba(60,64,67,.08);
}
html[data-theme="gray"]{
  --page:#e5e5e5; --surface:#f4f4f4; --surface-alt:#ebebeb; --hover:#dedede;
  --text:#2b2b2b; --muted:#666; --border:#c9c9c9; --input:#fff;
  --accent:#666; --accent-soft:#dcdcdc; --accent-strong:#2f2f2f;
  --shadow:rgba(0,0,0,.08);
}
html[data-theme="black"]{
  --page:#111; --surface:#181818; --surface-alt:#202020; --hover:#2a2a2a;
  --text:#f2f2f2; --muted:#a7a7a7; --border:#333; --input:#1d1d1d;
  --accent:#d4d4d4; --accent-soft:#303030; --accent-strong:#fff;
  --danger:#ff8a80; --shadow:rgba(0,0,0,.28);
}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;background:var(--page);color:var(--text);transition:background .18s,color .18s}
button,input,textarea,select{font:inherit}button{cursor:pointer}
.hidden{display:none!important}.mobile-only{display:none}
.app-shell{min-height:100vh}.topbar{height:64px;border-bottom:1px solid var(--border);display:grid;grid-template-columns:280px minmax(300px,720px) 1fr;align-items:center;gap:16px;padding:0 20px;background:var(--surface);position:sticky;top:0;z-index:20}
.brand-wrap{display:flex;align-items:center;gap:11px}.brand-mark,.auth-mark{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:var(--accent-strong);color:#fff;font-weight:800}.brand-name{font-size:19px;font-weight:700;letter-spacing:-.02em}
.global-search{display:flex;align-items:center;gap:10px;background:var(--hover);border:1px solid transparent;border-radius:28px;padding:0 16px;height:44px}.global-search:focus-within{background:var(--surface);border-color:#c9d7ef;box-shadow:0 1px 2px rgba(60,64,67,.1)}.search-icon{font-size:24px;color:var(--muted);line-height:1}.global-search input{border:0;background:transparent;outline:0;width:100%;font-size:15px;color:var(--text)}.top-actions{display:flex;justify-content:flex-end;align-items:center;gap:10px}.theme-picker{display:flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:var(--muted);white-space:nowrap}.theme-picker select{width:auto;padding:7px 9px;border-radius:8px;background:var(--surface);color:var(--text);border:1px solid var(--border)}.user-label{font-size:13px;color:var(--muted);white-space:nowrap}.text-btn,.icon-btn,.secondary-btn{border:0;background:transparent;color:var(--text)}.text-btn{padding:8px 10px;border-radius:8px}.text-btn:hover,.icon-btn:hover{background:var(--hover)}
.content-shell{display:grid;grid-template-columns:240px 1fr;min-height:calc(100vh - 64px)}.sidebar{padding:18px 12px;border-right:1px solid var(--border);background:var(--surface);display:flex;flex-direction:column;gap:18px}.create-btn{align-self:flex-start;border:1px solid #dadce0;background:var(--surface);border-radius:14px;padding:10px 17px 10px 13px;display:flex;align-items:center;gap:9px;box-shadow:0 1px 2px rgba(60,64,67,.12);color:var(--text);font-weight:600}.create-btn:hover{background:var(--surface-alt);box-shadow:0 2px 5px rgba(60,64,67,.14)}.plus{font-size:22px;color:var(--accent-strong);line-height:1}.nav-list{display:grid;gap:4px}.nav-item{border:0;background:transparent;border-radius:9px;padding:9px 12px;display:grid;grid-template-columns:22px 1fr auto;align-items:center;gap:7px;text-align:left;color:var(--text)}.nav-item span{color:var(--muted)}.nav-item strong{font-size:12px;color:var(--muted)}.nav-item:hover{background:var(--hover)}.nav-item.active{background:var(--accent-soft);color:var(--accent-strong);font-weight:650}.nav-item.active span{color:var(--accent-strong)}.sidebar-bottom{margin-top:auto;padding:10px 8px}.side-note{font-size:12px;color:#8a9098}
.main-area{padding:26px clamp(18px,4vw,44px) 60px;min-width:0}.auth-panel{min-height:calc(100vh - 115px);display:grid;place-items:center}.auth-card{width:min(430px,100%);padding:30px;border:1px solid var(--border);border-radius:18px;background:var(--surface);box-shadow:0 8px 30px rgba(60,64,67,.08)}.auth-heading{display:flex;align-items:center;gap:13px;margin-bottom:22px}.auth-heading h1{margin:0;font-size:24px}.auth-heading p{margin:3px 0 0;color:var(--muted);font-size:13px}.auth-nav{display:flex;gap:4px;background:var(--hover);border-radius:10px;padding:4px;margin-bottom:20px}.auth-nav-link{flex:1;text-align:center;text-decoration:none;color:var(--muted);padding:9px;border-radius:8px;font-size:14px}.auth-nav-link.active{background:var(--surface);box-shadow:0 1px 3px rgba(60,64,67,.15);color:var(--text);font-weight:650}.auth-nav-link.disabled{pointer-events:none;opacity:.45}.auth-card form{display:grid;gap:15px}
label{display:grid;gap:7px;font-weight:600;color:var(--text);font-size:14px}input,textarea,select{width:100%;background:var(--surface);border:1px solid #cdd3da;color:var(--text);padding:10px 12px;border-radius:9px;outline:none}input:focus,textarea:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb, var(--accent) 12%, transparent)}
.primary-btn,.danger-btn,.secondary-btn{border:0;border-radius:9px;padding:10px 14px}.primary-btn{background:var(--accent-strong);color:#fff;font-weight:650}.primary-btn:hover{background:var(--text)}.secondary-btn{background:var(--hover);color:var(--text)}.danger-btn{background:color-mix(in srgb, var(--danger) 12%, var(--surface));color:var(--danger)}
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:18px}.eyebrow{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;font-weight:700}.page-head h1{margin:3px 0 0;font-size:27px;letter-spacing:-.02em}.view-controls select{min-width:120px}
.task-surface{border:1px solid var(--border);border-radius:14px;background:var(--surface);overflow:hidden}.task-table-head,.task{display:grid;grid-template-columns:minmax(0,1fr) 180px 120px 76px;align-items:center;gap:16px}.task-table-head{padding:11px 18px;background:var(--surface-alt);border-bottom:1px solid var(--border);color:var(--muted);font-size:12px;font-weight:700}.task-list{display:grid}.task{padding:13px 18px;border-bottom:1px solid #eef0f3;transition:background .12s}.task:last-child{border-bottom:0}.task:hover{background:var(--surface-alt)}.task.done{opacity:.62}.task.done .task-title{text-decoration:line-through}.task-main{display:flex;align-items:flex-start;gap:11px;min-width:0}.check-btn{flex:0 0 auto;width:22px;height:22px;border-radius:50%;border:1.5px solid #9aa0a6;background:var(--surface);color:#fff;display:grid;place-items:center;margin-top:1px;font-size:13px}.check-btn:hover{border-color:var(--accent-strong)}.check-btn.checked{background:var(--accent-strong);border-color:var(--accent-strong)}.task-copy{min-width:0}.task-title{font-weight:650;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.task-description{font-size:12px;color:var(--muted);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.task-due{font-size:13px;color:var(--muted)}.task-due.overdue{color:var(--danger);font-weight:650}.task-priority{font-size:12px;font-weight:650}.priority-1{color:#b3261e}.priority-2{color:var(--muted)}.priority-3{color:#6f9f77}.task-actions{display:flex;justify-content:flex-end;gap:4px}.task-actions button{border:0;background:transparent;color:var(--muted);border-radius:7px;padding:7px 8px}.task-actions button:hover{background:#eef1f4}.empty-state{text-align:center;padding:70px 20px;color:var(--muted)}.empty-icon{width:48px;height:48px;border-radius:14px;background:var(--accent-soft);color:var(--accent-strong);display:grid;place-items:center;margin:0 auto 13px;font-size:22px;font-weight:800}.empty-state strong{display:block;color:var(--text)}.empty-state p{margin:4px 0 18px;font-size:13px}
.dialog{border:0;padding:0;background:transparent;color:inherit;width:min(650px,calc(100% - 24px))}.dialog::backdrop{background:rgba(0,0,0,.42);backdrop-filter:blur(2px)}.dialog-inner{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:22px;box-shadow:0 20px 50px rgba(60,64,67,.18);display:grid;gap:15px}.dialog-head{display:flex;justify-content:space-between;align-items:flex-start}.dialog-head h2{margin:3px 0 0}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}.check{display:flex;align-items:center;gap:8px}.check input{width:auto}.dialog-actions{display:grid;grid-template-columns:auto 1fr auto auto;gap:8px;align-items:center}.error{color:#b3261e;min-height:1.2em;margin:0;font-size:13px}
@media(max-width:900px){.topbar{grid-template-columns:auto minmax(180px,1fr) auto;padding:0 14px}.brand-name{display:none}.content-shell{grid-template-columns:210px 1fr}.task-table-head,.task{grid-template-columns:minmax(0,1fr) 140px 90px 68px}}
@media(max-width:720px){.mobile-only{display:grid}.topbar{grid-template-columns:auto minmax(0,1fr) auto}.brand-wrap{gap:8px}.global-search{height:40px}.user-label{display:none}.content-shell{grid-template-columns:1fr}.sidebar{position:fixed;left:0;top:64px;bottom:0;width:250px;z-index:30;transform:translateX(-100%);transition:transform .18s;box-shadow:8px 0 25px rgba(60,64,67,.12)}.sidebar.open{transform:translateX(0)}.task-table-head{display:none}.task{grid-template-columns:minmax(0,1fr) auto;padding:14px}.task-due,.task-priority{font-size:12px}.task-actions{grid-column:2;grid-row:1}.main-area{padding:18px 12px 40px}.page-head{align-items:center}.page-head h1{font-size:23px}.grid2{grid-template-columns:1fr}.dialog-actions{grid-template-columns:1fr 1fr}.dialog-actions span{display:none}.dialog-actions .danger-btn{grid-column:1}.dialog-actions .secondary-btn{grid-column:1}.dialog-actions .primary-btn{grid-column:2;grid-row:2}.auth-panel{min-height:calc(100vh - 95px)}}

html[data-theme="black"] .create-btn, html[data-theme="black"] .task-table-head{color:var(--text)}
html[data-theme="black"] .brand-mark, html[data-theme="black"] .auth-mark{background:#f2f2f2;color:#111}
html[data-theme="black"] .primary-btn{background:#f2f2f2;color:#111}
html[data-theme="black"] .check-btn.checked{background:#f2f2f2;border-color:#f2f2f2;color:#111}
@media(max-width:720px){.theme-label{display:none}}

.tag-line{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px}.tag-pill{display:inline-flex;align-items:center;padding:3px 8px;border:1px solid var(--border);border-radius:999px;font-size:12px;color:var(--muted);background:var(--surface2)}.field-note{display:block;font-size:12px;color:var(--muted);font-weight:400;margin-top:3px}.priority-pill.high{font-weight:700}.priority-pill.medium{font-weight:600}.priority-pill.low{font-weight:500}

.account-section,.settings-section{border:1px solid var(--border);border-radius:12px;padding:13px;background:var(--surface-alt)}
.section-heading{display:grid;gap:2px;margin-bottom:10px}.linked-account-row{display:flex;justify-content:space-between;align-items:center;gap:12px}.linked-account-row strong{font-size:14px}.account-section .field-note,.settings-section .field-note{margin:0}.settings-section{display:grid;gap:12px}

.link-btn{border:0;background:none;padding:8px 0;font:inherit;color:inherit;opacity:.68;cursor:pointer;text-decoration:underline;text-underline-offset:3px}.link-btn:hover{opacity:1}.full-btn{width:100%}.message{margin:8px 0 0;line-height:1.5;opacity:.8}.verification-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 16px;margin:0 0 18px;border:1px solid var(--line);border-radius:14px;background:var(--surface)}.verification-banner>div{display:grid;gap:4px}.verification-banner span{opacity:.72}.reset-heading{display:grid;gap:4px;margin-bottom:4px}.reset-heading span{opacity:.72;font-size:13px}

body.auth-mode .topbar, body.auth-mode .sidebar { display:none; }
body.auth-mode .app-shell { min-height:100vh; }
body.auth-mode .content-shell { display:block; }
body.auth-mode .main-area { min-height:100vh; padding:0; display:grid; place-items:center; }
body.auth-mode .auth-panel { min-height:100vh; width:min(100%, 520px); padding:28px; box-sizing:border-box; }
.auth-subtle { color:var(--muted); font-size:12px; line-height:1.6; margin-top:18px; text-align:center; }

.auth-return-note{min-height:1.2em;text-align:center;color:var(--muted);font-size:12px;margin-top:8px}