/* =========================================================================
   AlgoDelta Community — design system
   Primary gradient #FF5A3D → #FF007A · text #0B1020 · muted #64748B
   ========================================================================= */
:root{
  --grad:linear-gradient(135deg,#FF5A3D 0%,#FF007A 100%);
  --primary:#FF5A3D; --primary-600:#F0432A; --primary-50:#FFF1EE; --pink:#FF007A;
  --text:#0B1020; --text-2:#334155; --muted:#64748B; --faint:#94A3B8;
  --border:#E8EAEF; --border-2:#F0F2F5; --bg:#F7F8FA; --card:#FFFFFF; --soft:#F8FAFC; --tag-bg:#FFF1EE; --tag:#E8472C;
  --success:#16A34A; --success-50:#EAF8EF; --warning:#F59E0B; --warning-50:#FFF7E6; --danger:#EF4444; --danger-50:#FEF0F0;
  --blue:#2563EB; --blue-50:#EEF4FF; --violet:#7C3AED;
  --radius:14px; --radius-sm:10px; --shadow:0 1px 2px rgba(16,24,40,.03),0 2px 8px rgba(16,24,40,.04); --shadow-lg:0 12px 40px -8px rgba(16,24,40,.18);
  --font:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif; --mono:'JetBrains Mono',ui-monospace,SFMono-Regular,Consolas,monospace;
  --top:68px; --side:232px;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --text:#E8ECF4; --text-2:#C3CBD9; --muted:#94A3B8; --faint:#64748B;
  --border:#232A3A; --border-2:#1C2231; --bg:#0B0F19; --card:#111726; --soft:#151C2D;
  --primary-50:#2A1712; --tag-bg:#2A1712; --tag:#FF8A70; --success-50:#0F2A1B; --warning-50:#2A2110; --danger-50:#2B1416; --blue-50:#12203D;
  --shadow:0 1px 2px rgba(0,0,0,.4); --shadow-lg:0 12px 40px -8px rgba(0,0,0,.6);
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--top) + 16px)}
body{margin:0;font:15px/1.6 var(--font);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
a:hover{color:var(--primary)}
img{max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
h1,h2,h3,h4{line-height:1.25;margin:0;letter-spacing:-.01em}
code,kbd,pre{font-family:var(--mono);font-size:.88em}
kbd{border:1px solid var(--border);border-bottom-width:2px;border-radius:6px;padding:1px 6px;background:var(--card);color:var(--muted);font-size:12px}
.ic{flex:none;vertical-align:middle}
.muted{color:var(--muted)} .fine{font-size:12.5px;color:var(--muted);margin:8px 0} .lead{color:var(--muted);margin:-4px 0 18px;max-width:760px}
.skip{position:absolute;left:-999px;top:0;background:var(--text);color:#fff;padding:8px 14px;z-index:999}.skip:focus{left:8px}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
[hidden]{display:none!important}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;height:40px;padding:0 16px;border-radius:10px;border:1px solid transparent;font-weight:600;font-size:14px;white-space:nowrap;transition:.15s;background:var(--card);line-height:1}
.btn-sm{height:34px;padding:0 12px;font-size:13px;border-radius:9px}
.btn-lg{height:48px;padding:0 22px;font-size:15px;border-radius:12px}
.btn-block{width:100%}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 6px 16px -6px rgba(255,64,80,.55)}
.btn-primary:hover{color:#fff;filter:brightness(1.05);transform:translateY(-1px)}
.btn-primary:disabled{opacity:.6;transform:none;cursor:progress}
.btn-dark{background:var(--text);color:var(--card)}.btn-dark:hover{color:var(--card);opacity:.9}
.btn-outline{border-color:var(--border);background:var(--card)}.btn-outline:hover{border-color:var(--primary);color:var(--primary)}
.btn-ghost{background:transparent}.btn-ghost:hover{background:var(--soft)}
.btn-success{background:var(--success);color:#fff}.btn-success:hover{color:#fff;opacity:.9}
.btn.danger,.link-btn.danger{color:var(--danger)}
.link-btn{background:none;border:0;padding:4px 6px;color:var(--muted);font-size:13px;display:inline-flex;align-items:center;gap:5px;border-radius:7px}
.link-btn:hover{color:var(--primary);background:var(--primary-50)}
.icon-btn{position:relative;display:inline-grid;place-items:center;width:40px;height:40px;border-radius:10px;border:0;background:transparent;color:var(--text-2)}
.icon-btn:hover{background:var(--soft);color:var(--text)}
.dot-count{position:absolute;top:4px;right:3px;min-width:17px;height:17px;padding:0 4px;border-radius:9px;background:var(--grad);color:#fff;font-size:10px;font-weight:700;display:grid;place-items:center;border:2px solid var(--card)}

/* ---------- badges / chips / tags ---------- */
.badge{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:999px;font-size:11.5px;font-weight:600;background:var(--soft);color:var(--muted);border:1px solid var(--border);line-height:1.5;white-space:nowrap}
.badge-solved{background:var(--success-50);color:var(--success);border-color:color-mix(in srgb,var(--success) 35%,transparent);font-size:10.5px;letter-spacing:.04em;padding:1px 7px}
.badge-team{background:var(--grad);color:#fff;border:0}
.badge-mod{background:var(--blue-50);color:var(--blue);border-color:transparent}
.badge-title{background:var(--primary-50);color:var(--primary);border-color:transparent}
.badge-op{background:var(--warning-50);color:#C2410C;border-color:color-mix(in srgb,#F59E0B 40%,transparent);font-size:11px}
.badge-pin{background:var(--warning-50);color:#B45309;border-color:transparent}
.badge-warn{background:var(--warning-50);color:#B45309;border-color:transparent}
.tags{display:flex;gap:6px;flex-wrap:wrap;align-items:center}
.tag{display:inline-flex;align-items:center;gap:5px;padding:2px 9px;border-radius:7px;background:var(--tag-bg);color:var(--tag);font-size:12px;font-weight:500;white-space:nowrap}
.tag:hover{background:var(--primary);color:#fff}
.tag small{opacity:.65;font-size:11px}
.tag.lg{font-size:18px;padding:4px 12px}
.cat-chip{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:600;color:var(--text-2);padding:2px 9px;border-radius:7px;background:var(--soft);border:1px solid var(--border)}
.cat-chip:hover{border-color:var(--primary)}
.cat-ic{display:inline-grid;place-items:center;width:26px;height:26px;border-radius:8px;color:var(--c,#FF5A3D);background:color-mix(in srgb,var(--c,#FF5A3D) 12%,transparent);flex:none}
.cat-ic.big{width:48px;height:48px;border-radius:14px}
.chip{border:1px solid var(--border);background:var(--card);border-radius:999px;padding:5px 12px;font-size:13px;font-weight:500}
.chip:hover{border-color:var(--primary);color:var(--primary)}
.pill{display:inline-block;padding:1px 8px;border-radius:999px;font-size:11.5px;font-weight:600;background:var(--soft);border:1px solid var(--border);margin-right:4px}
.pill-published,.pill-active{background:var(--success-50);color:var(--success);border-color:transparent}
.pill-pending,.pill-onboarding{background:var(--warning-50);color:#B45309;border-color:transparent}
.pill-hidden,.pill-suspended{background:var(--soft);color:var(--muted)}
.pill-spam,.pill-banned,.pill-deleted{background:var(--danger-50);color:var(--danger);border-color:transparent}

/* ---------- top bar ---------- */
.announce{background:var(--grad);color:#fff;text-align:center;font-size:13.5px;padding:8px 16px;font-weight:500}
.announce a{color:#fff;text-decoration:underline}
.topbar{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--card) 92%,transparent);backdrop-filter:saturate(1.6) blur(14px);border-bottom:1px solid var(--border)}
.topbar-in{height:var(--top);max-width:1480px;margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:10px;flex:none;width:calc(var(--side) - 24px)}
.brand-logo{height:30px;width:auto;display:block}
.logo-dark{display:none!important}
:root[data-theme="dark"] .logo-light{display:none!important}
:root[data-theme="dark"] .logo-dark{display:block!important}
.brand-text{font-weight:800;letter-spacing:.04em;font-size:17px;line-height:1;display:flex;flex-direction:column}
.brand-text b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.brand-text small{font-size:10px;letter-spacing:.2em;color:var(--muted);font-weight:600;text-transform:uppercase;margin-top:3px}
.gsearch{position:relative;flex:1;max-width:560px;margin:0 auto;display:flex;align-items:center;gap:8px;height:42px;padding:0 12px;border-radius:12px;background:var(--soft);border:1px solid var(--border);color:var(--muted);transition:.15s}
.gsearch:focus-within{background:var(--card);border-color:var(--primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 14%,transparent)}
.gsearch input{flex:1;border:0;background:none;outline:0;height:100%;color:var(--text);min-width:0}
.gsearch input::-webkit-search-cancel-button{display:none}
.gsearch-pop{position:absolute;top:calc(100% + 8px);left:0;right:0;background:var(--card);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-lg);padding:8px;max-height:min(70vh,560px);overflow:auto;color:var(--text)}
.gs-group{padding:4px 0}
.gs-label{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);padding:6px 10px 4px}
.gs-item{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:9px;font-size:14px}
.gs-item mark{background:none;color:var(--primary);font-weight:700}
.gs-item .n{margin-left:auto;font-size:12px;color:var(--muted);white-space:nowrap}
.gs-item .n.solved{color:var(--success);font-weight:600}
.gs-item.on,.gs-item:hover{background:var(--primary-50);color:var(--text)}
.gs-foot{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--border-2);margin-top:6px;padding:10px 10px 4px;font-size:13px}
.gs-foot a{color:var(--primary);font-weight:600}
.gs-empty{padding:18px 12px;color:var(--muted);font-size:14px}
.top-actions{display:flex;align-items:center;gap:4px}
.menu{position:relative}
.menu summary{list-style:none;cursor:pointer;display:flex;border-radius:50%}
.menu summary::-webkit-details-marker{display:none}
.menu-pop{position:absolute;right:0;top:calc(100% + 10px);min-width:220px;background:var(--card);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow-lg);padding:6px;z-index:60}
.menu-pop.left{left:0;right:auto}
.menu-pop a,.menu-pop button{display:flex;align-items:center;gap:10px;width:100%;padding:9px 10px;border-radius:8px;background:none;border:0;text-align:left;font-size:14px;color:var(--text-2)}
.menu-pop a:hover,.menu-pop button:hover{background:var(--soft);color:var(--text)}
.menu-pop form{margin:0}
.menu-head{padding:10px 10px 12px;border-bottom:1px solid var(--border-2);margin-bottom:4px;display:flex;flex-direction:column}
.menu-head span{font-size:12px;color:var(--muted)}
.menu-pop .move{display:flex;gap:6px;padding:8px 6px 4px;border-top:1px solid var(--border-2);margin-top:4px}
.av{border-radius:50%;object-fit:cover;flex:none;display:inline-block;vertical-align:middle}
.av-i{display:inline-grid;place-items:center;font-weight:700;letter-spacing:.02em}

/* ---------- shell ---------- */
.shell{max-width:1480px;margin:0 auto;display:grid;grid-template-columns:var(--side) minmax(0,1fr);gap:0}
.sidenav{position:sticky;top:var(--top);height:calc(100vh - var(--top));overflow:auto;padding:26px 14px 30px;scrollbar-width:thin;background:var(--card);border-right:1px solid var(--border)}
.side-label{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text-2);margin:22px 12px 10px}
.side-label:first-child{margin-top:0}
.side-link{display:flex;align-items:center;gap:12px;padding:9px 12px;border-radius:10px;color:var(--text-2);font-size:13.5px;font-weight:500;margin-bottom:3px;border:1px solid transparent}
.side-link .ic{color:var(--text-2);width:17px;height:17px}
.side-link:hover{background:var(--soft);color:var(--text)}
.side-link.on{background:var(--primary-50);color:var(--primary);font-weight:600;border-color:color-mix(in srgb,var(--primary) 22%,transparent)}
.side-link.on .ic{color:var(--primary)}
.side-link .count{margin-left:auto;background:var(--grad);color:#fff;font-size:11px;font-weight:700;border-radius:999px;padding:0 7px}
.side-cta{margin:22px 4px 0;padding:16px;border-radius:14px;background:var(--card);border:1px solid var(--border);position:relative;overflow:hidden}
.side-cta::before{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:var(--grad)}
.side-cta p{font-size:12.5px;color:var(--muted);margin:6px 0 12px}
.main{padding:24px 28px 60px;min-width:0}
.page-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px;align-items:start}
.col-side{display:flex;flex-direction:column;gap:16px;position:sticky;top:calc(var(--top) + 16px)}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.alert{padding:12px 16px;border-radius:12px;margin-bottom:16px;font-size:14px;display:flex;gap:8px;align-items:center;border:1px solid transparent}
.alert.sm{padding:8px 12px;font-size:13px;margin-bottom:10px}
.alert-success{background:var(--success-50);color:var(--success)}
.alert-error{background:var(--danger-50);color:var(--danger)}
.alert-info{background:var(--blue-50);color:var(--blue)}
.h-page{font-size:24px;font-weight:800;letter-spacing:-.02em}
.h-page.sm{font-size:19px}
.h-page small{font-size:15px;font-weight:500;color:var(--muted)}
.h-sec{font-size:16px;font-weight:700;display:flex;align-items:center;gap:8px;margin:0 0 12px}
.h-sec .ic{color:var(--primary)}
.list-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 12px;flex-wrap:wrap}
.crumbs{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);margin:0 0 14px;flex-wrap:wrap}
.crumbs a:hover{color:var(--primary)}
.crumbs span{color:var(--text-2)}

/* ---------- hero ---------- */
.dash-top{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px;margin-bottom:26px}
.hero{position:relative;padding:40px 36px;border-radius:18px;background:var(--card);border:1px solid var(--border);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;justify-content:center}
.hero::after{content:"";position:absolute;right:-140px;top:-160px;width:520px;height:520px;background:radial-gradient(circle,rgba(255,90,61,.14),rgba(255,0,122,.07) 42%,transparent 70%);pointer-events:none}
.hero>*{position:relative;z-index:1}
.hero h1{font-size:clamp(28px,3vw,40px);font-weight:800;letter-spacing:-.03em;margin:0 0 14px;line-height:1.12;max-width:440px}
.hero p{color:var(--muted);font-size:15.5px;margin:0 0 26px;max-width:420px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.stat-card{padding:10px 20px;display:flex;flex-direction:column;justify-content:center}
.sc-row{display:flex;align-items:center;gap:14px;padding:13px 0;border-bottom:1px solid var(--border-2)}
.sc-row:last-child{border-bottom:0}
.sc-row b{display:block;font-size:19px;font-weight:800;letter-spacing:-.01em;line-height:1.2}
.sc-row small{color:var(--muted);font-size:12.5px;display:flex;align-items:center;gap:6px}
.sc-ic{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;flex:none}
.sc-ic.g{background:var(--success-50);color:var(--success)}.sc-ic.o{background:var(--warning-50);color:#EA8A00}.sc-ic.b{background:var(--blue-50);color:var(--blue)}.sc-ic.p{background:#F3EDFF;color:var(--violet)}
:root[data-theme="dark"] .sc-ic.p{background:#211A38}
.live{width:7px;height:7px;border-radius:50%;background:var(--success);display:inline-block;box-shadow:0 0 0 3px var(--success-50)}

/* ---------- tabs / seg ---------- */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:14px;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tabs a{display:inline-flex;align-items:center;gap:6px;padding:10px 12px;font-size:14px;font-weight:600;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}
.tabs a.on{color:var(--primary);border-color:var(--primary)}
.seg{display:inline-flex;background:var(--soft);border:1px solid var(--border);border-radius:10px;padding:3px}
.seg a{padding:5px 12px;border-radius:8px;font-size:13px;font-weight:600;color:var(--muted)}
.seg a.on{background:var(--card);color:var(--text);box-shadow:var(--shadow)}

/* ---------- question list ---------- */
.qlist{overflow:hidden}
.qi{padding:20px 24px;border-bottom:1px solid var(--border-2);transition:background .15s}
.qi:last-child{border-bottom:0}
.qi:hover{background:color-mix(in srgb,var(--soft) 70%,transparent)}
.qi.pinned{background:linear-gradient(90deg,var(--warning-50),transparent 60%)}
.qi-body{min-width:0}
.qi-head{display:flex;gap:16px;align-items:flex-start;justify-content:space-between}
.qi-title{font-size:16px;font-weight:650;line-height:1.4;margin:0 0 6px;display:flex;gap:8px;align-items:baseline;flex-wrap:wrap}
.qi-title .badge{position:relative;top:-2px}
.qi-title a{color:var(--text)}.qi-title a:hover{color:var(--primary)}
.qi-title mark,.qi-ex mark{background:color-mix(in srgb,var(--primary) 16%,transparent);color:inherit;border-radius:3px;padding:0 1px}
.qi-author{display:flex;align-items:center;gap:8px;flex:none;font-size:12.5px;line-height:1.25}
.qi-author .qi-who{display:flex;flex-direction:column}
.qi-author a{font-weight:600;color:var(--text)}
.qi-author small{color:var(--faint);font-size:11.5px}
.qi-ex{margin:0 0 12px;color:var(--muted);font-size:13.5px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;max-width:760px}
.qi-foot{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;align-items:center}
.qi-stats{display:flex;gap:16px;font-size:12.5px;color:var(--muted);white-space:nowrap}
.qi-stats span{display:inline-flex;align-items:center;gap:5px}
.qi-stats .ok{color:var(--success);font-weight:600}
.empty{text-align:center;padding:48px 20px;color:var(--muted)}
.empty .ic{color:var(--faint)}
.empty.big{padding:70px 20px}
.empty.big .h-page{margin:14px 0 6px}
.err-code{font-size:64px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}
.pager{display:flex;gap:6px;justify-content:center;margin:22px 0;flex-wrap:wrap}
.pager a,.pager span{min-width:38px;height:38px;display:grid;place-items:center;padding:0 10px;border-radius:10px;border:1px solid var(--border);background:var(--card);font-weight:600;font-size:14px}
.pager .on{background:var(--grad);color:#fff;border:0}
.pager .gap{border:0;background:none}

/* ---------- side cards ---------- */
.side-card{padding:18px}
.side-card h3{font-size:15px;font-weight:700;margin-bottom:12px;display:flex;align-items:baseline;justify-content:space-between}
.side-card h3 small{font-size:12px;color:var(--muted);font-weight:500}
.side-card p{color:var(--muted);font-size:13.5px;margin:0 0 14px}
.side-ask{background:linear-gradient(160deg,var(--primary-50),var(--card) 60%)}
.side-more{display:inline-flex;align-items:center;gap:4px;margin-top:12px;font-size:13px;font-weight:600;color:var(--primary)}
.leader{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.leader li{display:flex;align-items:center;gap:10px;font-size:13.5px}
.leader a{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.leader b{margin-left:auto;color:var(--text-2);font-size:12.5px;font-weight:600}
.leader .rank{width:18px;display:grid;place-items:center;font-size:12px;font-weight:700;color:var(--faint);flex:none}
.leader .rank.r1{color:#F5A524}.leader .rank.r2{color:#94A3B8}.leader .rank.r3{color:#C77B30}
.broker-list{list-style:none;margin:0;padding:0}
.broker-list li{display:flex;justify-content:space-between;align-items:center;padding:8px 0;font-size:13.5px;border-bottom:1px solid var(--border-2)}
.broker-list li:last-child{border-bottom:0}
.bs{font-style:normal;font-size:11px;font-weight:600;padding:2px 9px;border-radius:999px}
.bs-operational{background:var(--success-50);color:var(--success)}.bs-delayed{background:var(--warning-50);color:#C2410C}.bs-down{background:var(--danger-50);color:var(--danger)}
.tags.wrap{gap:6px}
.products .prod{display:flex;gap:10px;align-items:flex-start;padding:9px 8px;margin:0 -8px;border-radius:10px}
.products .prod:hover{background:var(--soft);color:inherit}
.products .prod span:last-child{display:flex;flex-direction:column;min-width:0}
.products b{font-size:13.5px}.products small{font-size:12px;color:var(--muted);line-height:1.4}
.products .btn{margin-top:10px}
.kv{display:grid;grid-template-columns:auto 1fr;gap:10px 14px;margin:0;font-size:13px}
.kv dt{color:var(--muted)}.kv dd{margin:0;text-align:right;font-weight:600}
.avatars{display:flex;margin-top:14px;padding-left:6px}
.avatars a{margin-left:-6px;border:2px solid var(--card);border-radius:50%;display:flex}
.link-list{list-style:none;margin:0;padding:0}
.link-list li{display:flex;flex-direction:column;padding:9px 0;border-bottom:1px solid var(--border-2);font-size:14px;gap:2px}
.link-list li:last-child{border-bottom:0}
.link-list li a{display:flex;gap:10px;align-items:flex-start;font-weight:500}
.link-list.sm li{font-size:13.5px}
.link-list small{color:var(--muted);font-size:12px}
.link-list li>span{display:flex}
.mini-count,.mini-score{flex:none;min-width:30px;height:22px;padding:0 6px;border-radius:6px;border:1px solid var(--border);font-size:12px;font-weight:700;display:grid;place-items:center;color:var(--muted)}
.mini-count.solved,.mini-score.solved{background:var(--success);color:#fff;border-color:var(--success)}

/* ---------- thread ---------- */
.thread-head{padding:22px 24px 16px;margin-bottom:16px}
.th-top{display:flex;gap:16px;align-items:flex-start;justify-content:space-between}
.thread-head h1{font-size:clamp(20px,2.2vw,25px);font-weight:750;letter-spacing:-.02em;line-height:1.3}
.follow{flex:none}
.follow.on{background:var(--primary-50);color:var(--primary);border-color:color-mix(in srgb,var(--primary) 30%,transparent)}
.thread-meta{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 12px;font-size:13px;color:var(--muted);align-items:center}
.thread-meta b{color:var(--text)}
.th-bottom{display:flex;gap:18px;align-items:center;margin-top:14px;padding-top:12px;border-top:1px solid var(--border-2);font-size:13px;color:var(--muted)}
.th-bottom span{display:inline-flex;align-items:center;gap:5px}
.th-bottom .grow{flex:1}
.post{padding:22px 24px 16px}
.thread .post{margin-bottom:22px}
.post-head{display:flex;gap:12px;align-items:center;margin-bottom:14px}
.ph-who{display:flex;flex-direction:column;min-width:0;font-size:14px}
.ph-who>div{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.ph-who small{color:var(--muted);font-size:12.5px}
.ph-who .role{font-size:12px;color:var(--muted)}
.post-foot{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-top:16px}
.post-actions{display:flex;flex-wrap:wrap;gap:4px;align-items:center;margin-left:auto}
.post-actions form{margin:0;display:inline}
.like{display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 11px;border-radius:8px;border:1px solid var(--border);background:var(--card);color:var(--text-2);font-size:12.5px;font-weight:500}
.like b{font-weight:600}
.like:hover{border-color:var(--primary);color:var(--primary)}
.like.on{background:var(--primary-50);border-color:color-mix(in srgb,var(--primary) 35%,transparent);color:var(--primary)}
.like.on svg{fill:currentColor}
.answers{padding:6px 24px 22px}
.answers-head{display:flex;justify-content:space-between;align-items:center;padding:14px 0;gap:10px;flex-wrap:wrap;border-bottom:1px solid var(--border-2)}
.answers-head h2{font-size:16px;font-weight:700}
.answers .post{padding:20px 0 14px;border-bottom:1px solid var(--border-2)}
.answers .post-foot{margin-top:12px}
.answers .post-actions{margin-left:0}
.answer.accepted{background:linear-gradient(180deg,color-mix(in srgb,var(--success-50) 70%,transparent),transparent 120px);margin:0 -24px;padding-left:24px;padding-right:24px}
.answer.is-pending,.answer.is-hidden{opacity:.75}
.solution{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;padding:4px 10px;border-radius:7px;border:1px dashed var(--border);background:none;color:var(--muted)}
button.solution:hover{border-color:var(--success);color:var(--success)}
.solution.on{border:1px solid color-mix(in srgb,var(--success) 45%,transparent);background:var(--success-50);color:var(--success)}
.empty-answers{display:flex;gap:14px;align-items:center;padding:22px 0;color:var(--muted)}
.your-answer{padding-top:18px}
.form-row{display:flex;gap:12px;align-items:center;margin-top:14px;flex-wrap:wrap}
.form-row.between{justify-content:space-between}
.form-row .btns{display:flex;gap:8px}
.comments{margin-top:12px;padding-top:4px}
.cmt-list{list-style:none;margin:0;padding:0}
.cmt{padding:9px 12px;margin-bottom:6px;border-radius:10px;background:var(--soft);font-size:13.5px;color:var(--text-2)}
.cmt-meta{color:var(--muted);font-size:12.5px;margin-left:4px}
.cmt-meta a{color:var(--text);font-weight:600}
.add-cmt{margin-top:2px}
.cmt-form{display:flex;gap:8px;margin-top:8px}
.cmt-form .inp{flex:1}
.participants{display:flex;align-items:center;gap:10px;margin-top:14px;padding-top:12px;border-top:1px solid var(--border-2);font-size:13px;color:var(--muted)}
.participants .avatars{margin:0;flex:1}
.participants b{color:var(--text)}
.cta-card{border-top:3px solid var(--primary)}
.cta-card h3{margin-top:12px}

/* ---------- markdown ---------- */
.md{font-size:15.5px;line-height:1.72;overflow-wrap:anywhere;color:var(--text-2)}
.md>*:first-child{margin-top:0}.md>*:last-child{margin-bottom:0}
.md p,.md ul,.md ol,.md blockquote,.md .code-wrap,.md .table-wrap{margin:0 0 14px}
.md h2,.md h3,.md h4,.md h5,.md h6{margin:22px 0 10px;color:var(--text)}
.md h2{font-size:20px}.md h3{font-size:17.5px}.md h4,.md h5,.md h6{font-size:15.5px}
.md a{color:var(--blue);text-decoration:underline;text-decoration-color:color-mix(in srgb,var(--blue) 35%,transparent);text-underline-offset:3px}
.md code{background:var(--soft);border:1px solid var(--border);padding:1px 5px;border-radius:6px;color:#C2185B}
:root[data-theme="dark"] .md code{color:#FF8FB1}
.md .code-wrap{position:relative;border-radius:12px;background:#0E1424;border:1px solid #1E2638;overflow:hidden}
.md pre{margin:0;padding:16px 18px;overflow:auto;font-size:13.5px;line-height:1.6;color:#E2E8F0;tab-size:2}
.md pre code{background:none;border:0;padding:0;color:inherit;font-size:inherit}
.code-lang{position:absolute;left:14px;top:8px;font:600 10.5px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:#64748B}
.code-lang+.code-copy+pre{padding-top:30px}
.code-copy{position:absolute;right:8px;top:6px;border:1px solid #2A3348;background:#141B2E;color:#94A3B8;font-size:11.5px;border-radius:7px;padding:3px 9px;opacity:0;transition:.15s}
.code-wrap:hover .code-copy,.code-copy:focus{opacity:1}
.md img{border-radius:10px;border:1px solid var(--border);margin:4px 0}
.md blockquote{border-left:3px solid var(--primary);background:var(--primary-50);padding:10px 14px;border-radius:0 10px 10px 0;color:var(--text-2)}
.md ul,.md ol{padding-left:22px}
.md li{margin:4px 0}
.md hr{border:0;border-top:1px solid var(--border);margin:20px 0}
.table-wrap{overflow-x:auto}
.md table{border-collapse:collapse;font-size:14px;width:100%}
.md th,.md td{border:1px solid var(--border);padding:7px 10px;text-align:left}
.md th{background:var(--soft)}
.hljs-string{color:#A5E075}.hljs-number,.hljs-literal{color:#FFB86B}.hljs-keyword,.hljs-built_in{color:#FF79C6}.hljs-attr,.hljs-property{color:#7DD3FC}.hljs-comment{color:#64748B;font-style:italic}.hljs-title,.hljs-function{color:#C4B5FD}.hljs-punctuation{color:#94A3B8}

/* ---------- forms ---------- */
.inp{width:100%;height:42px;padding:0 13px;border-radius:10px;border:1px solid var(--border);background:var(--card);outline:0;transition:.15s;font-size:14.5px}
textarea.inp{height:auto;padding:10px 13px;line-height:1.55;resize:vertical}
.inp.sm{height:36px;font-size:13.5px}
.inp.lg{height:50px;font-size:16px;font-weight:500}
.inp.mono{font-family:var(--mono);font-size:13px}
.inp:focus{border-color:var(--primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 13%,transparent)}
select.inp{appearance:auto}
.mini{height:30px;border-radius:8px;border:1px solid var(--border);background:var(--card);font-size:12.5px;padding:0 6px}
label{display:block;font-size:13.5px;font-weight:600;color:var(--text-2)}
label .inp,label textarea,label select{margin-top:6px;font-weight:400}
.check{display:flex;align-items:center;gap:8px;font-weight:500;margin:10px 0}
.check input{width:17px;height:17px;accent-color:var(--primary)}
.check.pad{margin-top:28px}
.mini-check{display:inline-flex;align-items:center;gap:5px;font-size:12px;font-weight:500;color:var(--muted)}
.field-err{color:var(--danger);font-size:13px;margin:6px 0 0;font-weight:500}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px 18px}
.grid2.top{align-items:start}
.form-card{padding:22px 24px;margin-bottom:18px;display:flex;flex-direction:column;gap:14px}
.form-card h2{font-size:17px}
.inline-search{display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;border:1px solid var(--border);background:var(--card);border-radius:10px;color:var(--muted)}
.inline-search input{border:0;outline:0;background:none;height:100%}
.inline-search.lg{max-width:460px;margin:22px auto;height:48px}
.inline-search.lg input{flex:1}
.hp{position:absolute!important;left:-9999px!important;opacity:0}

/* ---------- editor ---------- */
.editor{border:1px solid var(--border);border-radius:12px;background:var(--card);overflow:hidden;transition:.15s}
.editor:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 12%,transparent)}
.editor.drag{border-color:var(--primary);border-style:dashed}
.ed-bar{display:flex;align-items:center;gap:2px;padding:6px;border-bottom:1px solid var(--border-2);background:var(--soft);flex-wrap:wrap}
.ed-bar>button,.ed-upload{width:32px;height:32px;display:grid;place-items:center;border:0;background:none;border-radius:7px;color:var(--muted);font:700 12px var(--mono);cursor:pointer;margin:0}
.ed-bar>button:hover,.ed-upload:hover{background:var(--card);color:var(--text)}
.ed-sep{width:1px;height:18px;background:var(--border);margin:0 4px}
.ed-grow{flex:1}
.ed-tabs{display:flex;background:var(--card);border:1px solid var(--border);border-radius:8px;padding:2px}
.ed-tabs button{border:0;background:none;padding:3px 10px;border-radius:6px;font-size:12.5px;font-weight:600;color:var(--muted)}
.ed-tabs button.on{background:var(--soft);color:var(--text)}
.editor textarea{display:block;width:100%;border:0;outline:0;padding:14px 16px;min-height:180px;resize:vertical;background:transparent;font:14px/1.65 var(--mono)}
.ed-preview{padding:16px;min-height:180px}
.ed-hint{font-size:12px;color:var(--faint);padding:6px 14px;border-top:1px solid var(--border-2)}
.ed-hint code{font-size:11px}

/* ---------- ask page ---------- */
.ask-wrap{display:grid;grid-template-columns:210px minmax(0,1fr) 270px;gap:22px;align-items:start}
.ask-rail{list-style:none;margin:0;padding:10px 0;position:sticky;top:calc(var(--top) + 20px)}
.ask-rail li{position:relative;padding:0 0 26px 44px;color:var(--muted)}
.ask-rail li:not(:last-child)::before{content:"";position:absolute;left:14px;top:30px;bottom:4px;width:2px;background:var(--border)}
.ask-rail span{position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:13px;background:var(--card);border:1px solid var(--border)}
.ask-rail b{display:block;font-size:14px;color:var(--text-2)}
.ask-rail small{font-size:12px}
.ask-rail li.on span{background:var(--grad);color:#fff;border:0}
.ask-rail li.on b{color:var(--primary)}
.ask-rail li.done span{background:var(--success);color:#fff;border:0}
.ask-form{padding:26px 28px}
.ask-form.narrow{max-width:900px}
.ask-form .h-page{margin-bottom:18px}
.fs{border:0;padding:0;margin:0 0 26px}
.fs legend{font-size:16px;font-weight:700;margin-bottom:4px;padding:0}
.fs legend label{font-size:16px;font-weight:700;color:var(--text)}
.hint{font-size:13.5px;color:var(--muted);margin:0 0 12px}
.cat-pick{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px}
.cat-card{position:relative;display:flex;flex-direction:column;gap:6px;padding:14px;border:1.5px solid var(--border);border-radius:12px;cursor:pointer;transition:.15s;font-weight:400}
.cat-card:hover{border-color:color-mix(in srgb,var(--c) 60%,transparent)}
.cat-card input{position:absolute;opacity:0;pointer-events:none}
.cat-card b{font-size:14px;color:var(--text)}
.cat-card small{font-size:12px;color:var(--muted);line-height:1.4}
.cat-card:has(input:checked){border-color:var(--c);background:color-mix(in srgb,var(--c) 7%,var(--card));box-shadow:0 0 0 3px color-mix(in srgb,var(--c) 15%,transparent)}
.cat-card:has(input:focus-visible){outline:2px solid var(--primary)}
.title-meter{text-align:right;font-size:11.5px;color:var(--faint);margin-top:4px}
.similar{margin-top:10px;padding:12px 14px;border-radius:12px;background:var(--blue-50);font-size:13.5px}
.similar b{display:flex;align-items:center;gap:6px;color:var(--blue);margin-bottom:6px}
.similar ul{margin:0;padding:0;list-style:none}
.similar li{padding:4px 0;display:flex;gap:8px}
.similar li a{color:var(--text)}
.similar li a:hover{color:var(--primary)}
.templates{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-bottom:10px;font-size:13px;color:var(--muted)}
.tag-input{position:relative;display:flex;flex-wrap:wrap;gap:6px;align-items:center;min-height:46px;padding:6px 8px;border:1px solid var(--border);border-radius:10px;background:var(--card)}
.tag-input:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 12%,transparent)}
.ti-chips{display:contents}
.ti-chip{display:inline-flex;align-items:center;gap:4px;padding:3px 4px 3px 10px;border-radius:7px;background:var(--blue-50);color:var(--blue);font-size:13px;font-weight:500}
.ti-chip button{border:0;background:none;color:inherit;width:20px;height:20px;border-radius:5px;display:grid;place-items:center;font-size:15px;line-height:1}
.ti-chip button:hover{background:color-mix(in srgb,var(--blue) 15%,transparent)}
.ti-field{flex:1;min-width:140px;border:0;outline:0;background:none;height:32px}
.ti-pop{position:absolute;left:0;right:0;top:calc(100% + 6px);background:var(--card);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow-lg);padding:6px;z-index:20;max-height:280px;overflow:auto}
.ti-opt{display:flex;flex-direction:column;padding:8px 10px;border-radius:8px;cursor:pointer;font-size:13.5px}
.ti-opt small{color:var(--muted);font-size:12px}
.ti-opt.on,.ti-opt:hover{background:var(--primary-50)}
.ask-tips{position:sticky;top:calc(var(--top) + 20px);display:flex;flex-direction:column;gap:16px}
.checks{list-style:none;padding:0;margin:0;font-size:13.5px;color:var(--text-2)}
.checks li{display:flex;gap:8px;align-items:flex-start;padding:5px 0}
.checks .ic{color:var(--success);margin-top:4px}
.cheat{font-size:13px;width:100%}
.cheat td{padding:4px 0}

/* ---------- categories / tags / users ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.cat-tile{padding:20px;display:flex;flex-direction:column;border-top:3px solid var(--c)}
.cat-tile-head{display:flex;gap:14px;align-items:center;margin-bottom:10px}
.cat-tile-head .cat-ic{--c:inherit}
.cat-tile h2{font-size:17px}
.cat-tile-head small{color:var(--muted);font-size:12.5px}
.cat-tile>p{color:var(--muted);font-size:13.5px;margin:0 0 10px}
.cat-tile .side-more{margin-top:auto;padding-top:10px}
.cat-hero{display:flex;gap:18px;align-items:center;padding:22px 24px;margin-bottom:16px;border-top:3px solid var(--c)}
.cat-hero>div{flex:1}
.cat-hero h1{font-size:24px;font-weight:800}
.cat-hero p{margin:4px 0;color:var(--muted)}
.cat-hero-meta{font-size:13px;color:var(--muted)}
.cat-hero-meta a{color:var(--primary)}
.cat-intro{padding:18px 22px;margin-bottom:16px}
.tag-hero{padding:22px 24px;margin-bottom:16px}
.tag-hero h1{font-size:22px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.tag-hero p{color:var(--muted);margin:8px 0 4px}
.tag-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.tag-tile{padding:14px 16px;display:flex;flex-direction:column;gap:6px}
.tag-tile p{margin:0;font-size:13px;color:var(--muted);min-height:18px}
.tag-tile small{font-size:12px;color:var(--faint)}
.tag-tile:hover{border-color:var(--blue)}
.user-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:12px}
.user-tile{display:flex;align-items:center;gap:12px;padding:14px 16px}
.user-tile .rank{width:24px;font-weight:800;color:var(--faint)}
.ut-main{display:flex;flex-direction:column;min-width:0;flex:1}
.ut-main small{color:var(--muted);font-size:12px}
.ut-main .badge{align-self:flex-start;margin:2px 0}
.ut-rep{font-weight:800;color:var(--success)}

/* ---------- search page ---------- */
.search-page{max-width:980px}
.search-box{padding:16px 18px;margin-bottom:18px}
.sb-row{display:flex;align-items:center;gap:10px;color:var(--muted)}
.sb-row input{flex:1;border:0;outline:0;background:none;font-size:18px;height:44px;color:var(--text);min-width:0}
.sb-filters{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px;padding-top:12px;border-top:1px solid var(--border-2);align-items:center}
.sb-filters select{height:34px;border-radius:9px;border:1px solid var(--border);background:var(--card);padding:0 8px;font-size:13px}
.sb-filters .tag a{margin-left:4px}
.hits{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.hit{display:flex;align-items:center;gap:8px;padding:10px 14px;font-size:14px}
.hit small{color:var(--muted);font-size:12px}

/* ---------- profile / settings ---------- */
.profile{max-width:1000px}
.profile-head{display:flex;gap:22px;padding:24px;align-items:flex-start;flex-wrap:wrap}
.profile-head .av.lg{width:96px;height:96px}
.ph-main{flex:1;min-width:240px}
.ph-main h1{font-size:26px;font-weight:800}
.ph-sub{display:flex;gap:8px;align-items:center;flex-wrap:wrap;color:var(--muted);margin-top:4px}
.ph-bio{margin:12px 0 0;color:var(--text-2)}
.ph-meta{display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-top:12px}
.ph-meta a,.ph-meta span{display:inline-flex;gap:5px;align-items:center}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:16px 0}
.stat{padding:16px;text-align:center}
.stat b{display:block;font-size:24px;font-weight:800}
.stat span{font-size:12.5px;color:var(--muted)}
.profile-tags{margin-bottom:12px}
.answers-list li{flex-direction:row;align-items:center;gap:12px;padding:12px 18px}
.answers-list li a{flex:1}
.settings{max-width:760px}
.settings .h-page{margin-bottom:16px}
.avatar-row{display:flex;gap:14px;align-items:center}
.notif-list{list-style:none;margin:0;padding:0}
.notif-list li{display:flex;gap:12px;align-items:center;padding:14px 18px;border-bottom:1px solid var(--border-2)}
.notif-list li.unread{background:var(--primary-50)}
.notif-list li a{flex:1;font-size:14px}
.notif-list small{color:var(--muted);font-size:12px;white-space:nowrap}
.login-page{display:grid;place-items:center;padding:40px 0}
.login-card{max-width:440px;padding:32px;text-align:center}
.login-card .btn{margin:22px 0 6px}

/* ---------- auth modal ---------- */
.auth{border:0;padding:0;border-radius:22px;width:min(780px,calc(100vw - 24px));max-height:calc(100vh - 24px);box-shadow:var(--shadow-lg);background:var(--card);color:var(--text);display:grid;grid-template-columns:280px 1fr;overflow:hidden}
.auth:not([open]){display:none}
.auth::backdrop{background:rgba(11,16,32,.55);backdrop-filter:blur(4px)}
.auth[open]{animation:pop .22s ease-out}
@keyframes pop{from{opacity:0;transform:translateY(10px) scale(.98)}}
.auth-close{position:absolute;right:10px;top:10px;margin:0;z-index:2}
.auth-close button{width:36px;height:36px;border-radius:50%;border:0;background:var(--soft);display:grid;place-items:center;color:var(--muted)}
.auth-side{background:linear-gradient(165deg,#1A0F1C,#0B1020);color:#fff;padding:32px 26px;position:relative;overflow:hidden}
.auth-side::after{content:"";position:absolute;left:-60px;bottom:-80px;width:300px;height:300px;background:radial-gradient(circle,rgba(255,90,61,.45),rgba(255,0,122,.2) 45%,transparent 70%)}
.auth-side h2{font-size:22px;font-weight:800;margin:18px 0 8px;letter-spacing:-.02em}
.auth-side p{color:#A8B1C4;font-size:14px;margin:0}
.auth-steps{list-style:none;margin:28px 0 0;padding:0;display:flex;flex-direction:column;gap:14px;position:relative;z-index:1}
.auth-steps li{display:flex;align-items:center;gap:10px;font-size:14px;color:#6B7590;font-weight:600}
.auth-steps span{width:26px;height:26px;border-radius:50%;border:1.5px solid #3A4358;display:grid;place-items:center;font-size:12px}
.auth-steps li.on{color:#fff}
.auth-steps li.on span{background:var(--grad);border:0}
.auth-steps li.done{color:#A8B1C4}
.auth-steps li.done span{background:var(--success);border:0;color:#fff;font-size:0}
.auth-steps li.done span::before{content:"✓";font-size:13px}
.auth-main{padding:44px 34px 30px;position:relative;min-height:420px;display:flex;flex-direction:column;justify-content:center}
.auth-step{display:flex;flex-direction:column;gap:10px;animation:fade .2s ease-out}
@keyframes fade{from{opacity:0;transform:translateX(8px)}}
.lbl{font-size:13px;font-weight:600;color:var(--text-2);margin-top:4px}
.phone{display:flex;align-items:center;height:52px;border:1.5px solid var(--border);border-radius:12px;overflow:hidden;transition:.15s}
.phone:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 13%,transparent)}
.phone span{padding:0 12px 0 16px;font-weight:700;color:var(--muted);border-right:1px solid var(--border);height:60%;display:grid;place-items:center}
.phone input{flex:1;border:0;outline:0;height:100%;padding:0 14px;font-size:19px;font-weight:600;letter-spacing:.06em;background:none;min-width:0}
.auth .inp{height:48px;font-size:15.5px}
.otp{position:relative;height:58px}
.otp input{position:absolute;inset:0;width:100%;height:100%;opacity:0;font-size:24px;letter-spacing:1em;z-index:2;caret-color:transparent}
.otp-boxes{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;height:100%}
.otp-boxes i{border:1.5px solid var(--border);border-radius:12px;display:grid;place-items:center;font:700 24px var(--mono);font-style:normal;color:var(--text);transition:.12s}
.otp-boxes i.on{border-color:var(--primary);box-shadow:0 0 0 4px color-mix(in srgb,var(--primary) 13%,transparent)}
.otp-boxes i.fill{border-color:var(--text-2)}
.otp.err .otp-boxes i{border-color:var(--danger);animation:shake .3s}
@keyframes shake{25%{transform:translateX(-3px)}75%{transform:translateX(3px)}}
.auth-info{font-size:14px;color:var(--muted);margin:0 0 4px}
.auth-info b{color:var(--text)}
.auth-info.ok{color:var(--success);display:flex;gap:6px;align-items:center;font-weight:500}
.auth-alt{font-size:13.5px;color:var(--muted);margin:6px 0 0;text-align:center}
.auth-alt .link-btn{color:var(--primary);font-weight:600;font-size:13.5px}
.auth-alt .link-btn:disabled{color:var(--faint);background:none;cursor:default}
.err{color:var(--danger);font-size:13.5px;margin:0;min-height:0;font-weight:500}
.err:empty{display:none}
.pw{position:relative}
.pw .link-btn{position:absolute;right:6px;top:50%;transform:translateY(-50%)}
.pw-meter{height:4px;border-radius:4px;background:var(--border-2);overflow:hidden}
.pw-meter i{display:block;height:100%;width:0;background:var(--danger);transition:.2s}
.auth-done{align-items:center;text-align:center}
.done-ic{width:72px;height:72px;border-radius:50%;background:var(--success);color:#fff;display:grid;place-items:center;animation:pop .3s}
.auth-done h3{font-size:22px;margin-top:8px}
.btn .spin{width:16px;height:16px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:rot .7s linear infinite}
@keyframes rot{to{transform:rotate(360deg)}}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);background:var(--text);color:var(--card);padding:11px 18px;border-radius:12px;font-size:14px;font-weight:500;box-shadow:var(--shadow-lg);z-index:200;max-width:calc(100vw - 32px);animation:up .2s}
.toast.err{background:var(--danger);color:#fff}
@keyframes up{from{opacity:0;transform:translate(-50%,8px)}}

/* ---------- footer (mirrors algodelta.com) ---------- */
.footer{background:#0B1020;color:#A8B1C4;margin-top:40px}
.footer a{color:#C9D1E0}.footer a:hover{color:#fff}
.footer .logo-light{display:none!important}.footer .logo-dark{display:block!important}
.footer-in{max-width:1480px;margin:0 auto;padding:48px 28px 36px;display:grid;grid-template-columns:minmax(260px,1.1fr) 2.4fr;gap:48px}
.footer-brand .brand{width:auto;margin-bottom:14px}
.footer-brand p{font-size:13.5px;margin:0 0 18px;max-width:360px}
.footer-contact{list-style:none;margin:0 0 18px;padding:0;display:flex;flex-direction:column;gap:12px;font-size:13px}
.footer-contact li{display:flex;gap:10px;align-items:flex-start}
.footer-contact .ic{color:var(--primary);margin-top:2px}
.footer-contact span{display:flex;flex-direction:column}
.footer-contact small{color:#6B7590;font-size:11.5px}
.footer-contact a{font-weight:600;font-size:14px}
.footer-social{display:flex;gap:8px}
.footer-social a{width:34px;height:34px;border-radius:9px;border:1px solid #232A3A;display:grid;place-items:center}
.footer-social a:hover{background:var(--grad);border-color:transparent}
.footer-cols{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.footer-cols h4{font-size:13px;color:#fff;margin-bottom:14px;font-weight:700}
.footer-cols a{display:block;font-size:13.5px;padding:4px 0}
.footer-bot{max-width:1480px;margin:0 auto;padding:18px 28px 26px;border-top:1px solid #1C2231;font-size:12.5px}
.footer-bot-row{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-bottom:10px}
.footer-bot nav{display:flex;gap:6px 16px;flex-wrap:wrap}
.footer-bot p{margin:4px 0;color:#6B7590}
.bottom-nav{display:none}
.only-m{display:none!important}

/* ---------- admin ---------- */
.admin .adm{display:grid;grid-template-columns:240px minmax(0,1fr);min-height:100vh}
.adm-side{background:var(--card);border-right:1px solid var(--border);padding:18px 14px;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:18px;overflow:auto}
.adm-side .brand{width:auto;padding:4px 8px}
.adm-side nav{display:flex;flex-direction:column}
.adm-foot{margin-top:auto;font-size:12.5px;color:var(--muted);display:flex;flex-direction:column;gap:6px;padding:0 8px}
.adm-foot a{display:flex;align-items:center;gap:4px;font-weight:600;color:var(--text-2)}
.adm-main{padding:26px 30px 60px;min-width:0}
.adm-main .h-page{margin-bottom:16px}
.adm-card{padding:18px 20px;margin-bottom:16px}
.adm-card h2{font-size:16px;margin-bottom:12px;display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.adm-card h2 small{font-size:12px;font-weight:500;color:var(--muted);display:flex;gap:6px;align-items:center}
.kpis{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;margin-bottom:16px}
.kpi{padding:16px 18px;display:flex;flex-direction:column;gap:2px}
.kpi span{font-size:12.5px;color:var(--muted);font-weight:600}
.kpi b{font-size:26px;font-weight:800;letter-spacing:-.02em}
.kpi small{font-size:12px;color:var(--muted)}
.kpi small a{color:var(--primary)}
.kpi.warn{border-color:color-mix(in srgb,var(--warning) 50%,transparent);background:var(--warning-50)}
.bars{display:flex;align-items:flex-end;gap:4px;height:160px;padding-top:10px}
.bar{flex:1;height:100%;display:flex;align-items:flex-end;gap:1px}
.bar i{flex:1;border-radius:3px 3px 0 0;min-height:2px}
.bar i.q,.lg-q{background:var(--primary)}.bar i.a,.lg-a{background:var(--blue)}
.lg-q,.lg-a{display:inline-block;width:10px;height:10px;border-radius:3px}
.tbl{width:100%;border-collapse:collapse;font-size:13.5px}
.tbl th{text-align:left;font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);padding:10px 12px;border-bottom:1px solid var(--border);background:var(--soft);white-space:nowrap}
.tbl td{padding:10px 12px;border-bottom:1px solid var(--border-2);vertical-align:middle}
.tbl td small{display:block;color:var(--muted);font-size:12px}
.tbl .t-title{max-width:440px}
.tbl .t-title a{font-weight:600}
.tbl .t-detail{max-width:360px;font-size:12px;color:var(--muted);word-break:break-all}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.filters .inp{width:auto;min-width:160px}
.act-row{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin:6px 0}
.review .rv-head{display:flex;flex-direction:column;gap:2px;margin-bottom:10px}
.review .rv-head small{color:var(--muted)}
.rv-body{max-height:300px;overflow:auto;padding:12px 14px;background:var(--soft);border-radius:10px;margin-bottom:10px;font-size:14px}
.rv-text{font-size:14px;color:var(--text-2);background:var(--soft);padding:10px 12px;border-radius:10px}
.checks-row{border:0;padding:0;margin:0;display:flex;gap:16px;flex-wrap:wrap}
.checks-row legend{font-size:13.5px;font-weight:600;margin-bottom:2px}
.sticky-save{position:sticky;bottom:0;padding:14px 0;background:linear-gradient(transparent,var(--bg) 40%);display:flex;justify-content:flex-end}
.syn-list{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.syn{display:inline-flex;align-items:center;gap:4px;font-size:12.5px;padding:3px 4px 3px 10px;border:1px solid var(--border);border-radius:999px;margin:0}

/* ---------- responsive ---------- */
@media (max-width:1240px){
  .page-grid,.dash-top{grid-template-columns:minmax(0,1fr) 270px}
  .footer-cols{grid-template-columns:repeat(2,1fr)}
  .ask-wrap{grid-template-columns:minmax(0,1fr) 260px}
  .ask-rail{display:none}
}
@media (max-width:1060px){
  :root{--side:0px}
  .shell{grid-template-columns:minmax(0,1fr)}
  .sidenav{position:fixed;left:0;top:0;bottom:0;height:100vh;width:280px;background:var(--card);z-index:90;transform:translateX(-100%);transition:transform .25s;box-shadow:var(--shadow-lg);padding-top:20px;border-right:0}
  .sidenav.open{transform:none}
  .drawer-backdrop{position:fixed;inset:0;background:rgba(11,16,32,.45);z-index:80}
  .only-m{display:inline-grid!important}
  a.only-m.btn{display:inline-flex!important}
  .brand{width:auto}
  .admin .adm{grid-template-columns:1fr}
  .adm-side{position:static;height:auto;flex-direction:row;flex-wrap:wrap;align-items:center}
  .adm-side nav{flex-direction:row;flex-wrap:wrap}
}
@media (max-width:900px){
  .page-grid{grid-template-columns:minmax(0,1fr)}
  .col-side{position:static}
  .ask-wrap{grid-template-columns:minmax(0,1fr)}
  .ask-tips{position:static}
  .dash-top{grid-template-columns:minmax(0,1fr)}
  .hero{padding:26px 22px}
  .stat-card{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
  .sc-row:nth-last-child(2){border-bottom:0}
  .footer-in{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
}
@media (max-width:720px){
  :root{--top:58px}
  body{padding-bottom:72px;font-size:15px}
  .topbar-in{padding:0 10px;gap:6px}
  .brand-text{font-size:15px}
  .brand-text small{display:none}
  .gsearch{display:none}
  .gsearch.mobile-open{display:flex;position:fixed;left:8px;right:8px;top:8px;z-index:95;max-width:none;height:46px;background:var(--card);box-shadow:var(--shadow-lg)}
  .only-d{display:none!important}
  .main{padding:14px 12px 40px}
  .qi{padding:16px}
  .qi-head{flex-direction:column-reverse;gap:6px}
  .qi-author .av{width:20px!important;height:20px!important;font-size:9px!important}
  .qi-author .qi-who{flex-direction:row;gap:6px;align-items:baseline}
  .qi-title{font-size:15.5px}
  .post{padding:16px}
  .thread-head{padding:18px 16px 14px}
  .th-top{flex-direction:column}
  .answers{padding:4px 16px 18px}
  .answer.accepted{margin:0 -16px;padding-left:16px;padding-right:16px}
  .hero h1{font-size:28px}
  .stat-card{padding:4px 14px}
  .sc-row{gap:10px}
  .sc-ic{width:32px;height:32px}
  .brand-logo{height:24px}
  .footer-cols{grid-template-columns:1fr 1fr}
  .stat-row{grid-template-columns:1fr 1fr}
  .ask-form{padding:18px 16px}
  .cat-pick{grid-template-columns:1fr 1fr}
  .auth{grid-template-columns:1fr;border-radius:20px 20px 0 0;margin:auto 0 0;width:100vw;max-width:100vw;max-height:92vh}
  .auth-side{padding:22px 22px 14px}
  .auth-side h2{font-size:19px;margin:10px 0 4px}
  .auth-side svg{display:none}
  .auth-steps{flex-direction:row;margin-top:14px;gap:10px}
  .auth-steps li{font-size:12px}
  .auth-main{padding:22px 22px 28px;min-height:0}
  .footer-in{padding:26px 16px}
  .bottom-nav{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:0;right:0;bottom:0;height:64px;padding-bottom:env(safe-area-inset-bottom);background:color-mix(in srgb,var(--card) 94%,transparent);backdrop-filter:blur(12px);border-top:1px solid var(--border);z-index:70}
  .bottom-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;font-size:10.5px;font-weight:600;color:var(--muted);position:relative}
  .bottom-nav a.on{color:var(--primary)}
  .bottom-nav .fab{width:52px;height:52px;border-radius:50%;background:var(--grad);color:#fff;margin:-22px auto 0;box-shadow:0 8px 20px -6px rgba(255,64,80,.7);justify-self:center}
  .bottom-nav .dot{position:absolute;top:10px;left:55%;width:8px;height:8px;border-radius:50%;background:var(--primary)}
  .toast{bottom:84px}
  .adm-main{padding:16px 12px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ---------- UX v2: search-first hero, faster posting ---------- */
.hero{padding:32px 34px}
.hero h1{font-size:clamp(26px,2.6vw,36px);margin-bottom:8px;max-width:none}
.hero p{margin-bottom:18px}
.hero-search{max-width:640px;margin:0;height:56px;padding:0 6px 0 16px;border-radius:14px;background:var(--card);border:1.5px solid var(--border);box-shadow:0 8px 24px -12px rgba(16,24,40,.18)}
.hero-search input{font-size:15.5px}
.hero-search .btn{height:44px;border-radius:10px}
.hero-search .gsearch-pop{z-index:40}
.hero-chips{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:14px 0 22px;font-size:13px;color:var(--muted)}
.hero-chips .chip{display:inline-flex;align-items:center;gap:5px;font-size:12.5px;padding:4px 11px;background:color-mix(in srgb,var(--card) 80%,transparent)}
.hero-cta{align-items:center}
.hero-note{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;color:var(--muted);margin-left:6px}
.hero-note .ic{color:var(--success)}
.gs-ask{border-top:1px dashed var(--border);margin-top:6px;padding-top:12px;color:var(--primary)}
.gs-ask b{color:var(--text)}
.gs-ask-ic{width:24px;height:24px;border-radius:7px;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:700;flex:none}
.side-link .sl-name{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.side-link .sl-n{font-size:11px;font-weight:600;color:var(--faint);min-width:22px;text-align:right}
.side-link.on .sl-n{color:var(--primary)}
.step-n{display:inline-grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--grad);color:#fff;font-size:12px;font-weight:700;margin-right:6px;vertical-align:1px}
.fs{padding-bottom:24px;border-bottom:1px solid var(--border-2)!important}
.cat-pick{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:8px}
.cat-card{flex-direction:row;align-items:center;gap:10px;padding:10px 12px;border-width:1px}
.cat-card .cat-ic{width:30px;height:30px;color:var(--text-2);background:var(--soft)}
.cat-card b{font-size:13px;font-weight:600;line-height:1.3}
.cat-card:hover{border-color:var(--primary)}
.cat-card:has(input:checked){border-color:var(--primary);background:var(--primary-50);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 14%,transparent)}
.cat-card:has(input:checked) .cat-ic{background:var(--grad);color:#fff}
.suggest-note{display:inline-flex;align-items:center;gap:5px;color:var(--primary);font-weight:500}
.tag-suggest{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:0 0 10px;font-size:12.5px;color:var(--muted)}
.tag-suggest .chip{font-size:12px;padding:3px 10px;color:var(--tag);background:var(--tag-bg);border-color:transparent}
.similar{background:var(--success-50)}
.similar b{color:var(--success)}
.sim-solved{font-style:normal;font-size:11px;font-weight:600;color:var(--success);margin-left:auto;padding-left:8px}
.ask-rail li{cursor:pointer}
.jump{display:inline-flex;align-items:center;gap:5px;font-size:12.5px;font-weight:600;color:var(--success);background:var(--success-50);padding:4px 10px;border-radius:7px}
.jump:hover{color:var(--success);filter:brightness(.97)}
@media (max-width:720px){
  .hero{padding:22px 18px}
  .hero-search{height:50px}
  .hero-search .btn{display:none}
  .hero-note{display:none}
  .hero-chips{margin:12px 0 16px}
  .cat-pick{grid-template-columns:1fr 1fr}
}
.hero{overflow:visible;background:radial-gradient(520px 420px at 100% 0%,rgba(255,90,61,.13),rgba(255,0,122,.06) 45%,transparent 72%),var(--card)}
.hero::after{display:none}
.side-link .sl-name{white-space:normal;overflow:visible;line-height:1.3}
.hero .hero-search{z-index:6}
.av-i{line-height:1;overflow:hidden;white-space:nowrap}

/* ---------- admin activity charts ---------- */
.viz-root{position:relative;--viz-1:#2a78d6;--viz-2:#eb6834;--viz-3:#1baf7a;--viz-4:#4a3aa7}
:root[data-theme="dark"] .viz-root{--viz-1:#3987e5;--viz-2:#d95926;--viz-3:#199e70;--viz-4:#9085e9}
.viz-filters{display:flex;align-items:center;gap:6px;margin:4px 0 14px;flex-wrap:wrap}
.viz-filters span{font-weight:700;font-size:15px;margin-right:8px}
.viz-filters button{height:32px;padding:0 12px;border-radius:8px;border:1px solid var(--border);background:var(--card);font-size:13px;font-weight:600;color:var(--muted)}
.viz-filters button.on{background:var(--text);color:var(--card);border-color:var(--text)}
.viz-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.viz-head h2{margin:0}
.viz-legend{display:flex;gap:6px}
.viz-legend button{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--border);background:var(--card);border-radius:8px;padding:4px 10px;font-size:12.5px;color:var(--text-2)}
.viz-legend button.off{opacity:.45;text-decoration:line-through}
.vl-key{width:10px;height:10px;border-radius:3px;display:inline-block}
.viz-totals{display:flex;gap:28px;flex-wrap:wrap;margin:10px 0 14px}
.vt-item{display:grid;grid-template-columns:auto auto;align-items:center;column-gap:8px}
.vt-item.off{opacity:.4}
.vt-item b{font-size:22px;font-weight:800;letter-spacing:-.02em;color:var(--text)}
.vt-item span{grid-column:2;font-size:12px;color:var(--muted);margin-top:-2px}
.vt-item small{grid-column:2;font-size:11.5px;font-weight:600}
.vt-item small.up{color:var(--success)}.vt-item small.down{color:var(--danger)}
.vt-key{width:14px;height:3px;border-radius:2px;display:inline-block;grid-row:1}
.viz{position:relative;height:210px;padding:0 0 22px 34px;outline:0;border-radius:8px}
.viz.sm{height:150px}
.viz:focus-visible{box-shadow:0 0 0 2px var(--primary)}
.viz-grid{position:absolute;inset:0 0 22px 34px;pointer-events:none}
.viz-gl{position:absolute;left:0;right:0;border-top:1px solid var(--border-2)}
.viz-gl span{position:absolute;right:calc(100% + 8px);top:-8px;font-size:11px;color:var(--faint)}
.viz-plot{position:relative;height:100%;display:flex;align-items:stretch;gap:var(--gap)}
.viz-g{flex:1;min-width:0;display:flex;align-items:flex-end;gap:2px;padding:0 1px;border-radius:6px;cursor:default}
.viz-g.on{background:color-mix(in srgb,var(--text) 6%,transparent)}
.viz-b{flex:1;min-width:1px;border-radius:4px 4px 0 0;transition:filter .12s}
.viz-b.zero{min-height:0}
.viz-g.on .viz-b{filter:brightness(1.08)}
.viz-x{position:absolute;left:34px;right:0;bottom:0;display:flex;gap:var(--gap,2px);font-size:11px;color:var(--faint)}
.viz-x span{flex:1;min-width:0;white-space:nowrap;overflow:visible}
.viz-tip{position:absolute;z-index:20;pointer-events:none;background:var(--card);border:1px solid var(--border);border-radius:10px;box-shadow:var(--shadow-lg);padding:10px 12px;min-width:160px;font-size:12.5px}
.vt-date{font-size:11.5px;color:var(--muted);margin-bottom:6px;font-weight:600}
.vt-row{display:flex;align-items:center;gap:8px;padding:2px 0}
.vt-row b{font-size:14px;color:var(--text);min-width:24px}
.vt-row span{color:var(--muted)}
.viz-table{margin:0 0 16px}
.viz-table summary{cursor:pointer;font-size:13px;font-weight:600;color:var(--primary);padding:6px 0}
.viz-table .table-wrap{max-height:320px;overflow:auto;border:1px solid var(--border);border-radius:10px;background:var(--card)}

/* ---------- admin: mail templates ---------- */
.mail-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:14px;margin-bottom:18px}
.mail-card{padding:18px 20px;display:flex;flex-direction:column;gap:12px}
.mail-card.off{opacity:.7}
.mc-top{display:flex;gap:12px;align-items:flex-start}
.mc-top>div{flex:1;min-width:0}
.mc-top h2{font-size:15px;margin:0 0 2px}
.mc-top p{margin:0;font-size:12.5px;color:var(--muted)}
.mc-top form{margin:0}
.mc-ic{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:var(--primary-50);color:var(--primary);flex:none}
.mc-subject{font-size:13px;background:var(--soft);border:1px solid var(--border-2);border-radius:9px;padding:8px 10px;color:var(--text-2)}
.mc-subject small,.mp-subject small{display:block;font-size:10.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--faint);font-weight:700}
.mc-foot{display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:12.5px;margin-top:auto}
.mc-foot .btn{margin-left:auto}
.mc-stat b{font-size:14px;color:var(--text)}
.mc-stat.bad,.mc-stat.bad b{color:var(--danger)}
.switch{width:42px;height:24px;border-radius:999px;border:0;background:var(--border);position:relative;padding:0;transition:.15s;flex:none}
.switch i{position:absolute;left:3px;top:3px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 2px rgba(0,0,0,.2);transition:.15s}
.switch.on{background:var(--success)}
.switch.on i{left:21px}
.mail-edit{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px;align-items:start}
.mail-preview{position:sticky;top:16px}
.mail-preview iframe{width:100%;height:620px;border:1px solid var(--border);border-radius:10px;background:#F7F8FA}
.mp-subject{font-size:14px;font-weight:600;margin-bottom:10px}
.vars{display:flex;flex-direction:column;gap:6px;font-size:13px}
.vars>div{display:flex;flex-wrap:wrap;gap:6px}
.vars .chip{font:500 12px var(--mono);padding:3px 9px}
@media (max-width:1100px){.mail-edit{grid-template-columns:1fr}.mail-preview{position:static}}