:root{--bg:#f5f6fa;--card:#fff;--ink:#101828;--soft:#475467;--dim:#98a2b3;--line:#e4e7ec;--hover:#f2f4f7;--side:#0f172a;--side-ink:#cbd5e1;--side-dim:#64748b;
--accent:#4f46e5;--accent-soft:color-mix(in srgb,var(--accent) 10%,transparent);--ok:#067647;--ok-bg:#ecfdf3;--warn:#b42318;--warn-bg:#fef3f2;--amber:#b54708;--amber-bg:#fffaeb;
--shadow:0 1px 2px rgba(16,24,40,.05),0 1px 3px rgba(16,24,40,.06);--radius:14px}
@media (prefers-color-scheme:dark){:root{--bg:#0b1020;--card:#131a2c;--ink:#e6e9f0;--soft:#aab3c5;--dim:#6f7a90;--line:#232c42;--hover:#1a2238;--side:#080c18;
--ok:#47cd89;--ok-bg:#0c2a1c;--warn:#f97066;--warn-bg:#2d1210;--amber:#fdb022;--amber-bg:#2b1d05;--shadow:none;--link:color-mix(in srgb,var(--accent) 50%,#fff)}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.55 Inter,"Segoe UI",system-ui,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--link,var(--accent));text-decoration:none}a:hover{text-decoration:underline}
code{font-size:.88em;background:var(--hover);padding:1px 6px;border-radius:5px}

/* layout: sidebar + content */
body.app{display:grid;grid-template-columns:240px 1fr;min-height:100vh}
.side{position:sticky;top:0;height:100vh;overflow:auto;background:var(--side);color:var(--side-ink);display:flex;flex-direction:column;padding:20px 14px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:17px;padding:4px 8px 18px}.logo:hover{text-decoration:none}
.mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--accent);color:#fff;font-size:17px;box-shadow:0 4px 14px color-mix(in srgb,var(--accent) 45%,transparent)}
.side nav{flex:1}.group{margin-bottom:14px}
.gt{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--side-dim);padding:6px 10px}
.side nav a,.out button{display:flex;align-items:center;gap:11px;padding:8px 10px;border-radius:9px;color:var(--side-ink);font-weight:500;font-size:14px}
.side nav a:hover,.out button:hover{background:rgba(255,255,255,.06);text-decoration:none;color:#fff}
.side nav a.active{background:var(--accent);color:#fff}
.side svg{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.out{margin-top:10px;border-top:1px solid rgba(255,255,255,.08);padding-top:10px}.out button{width:100%;background:none;border:0;font:inherit;cursor:pointer}
main{max-width:1180px;width:100%;margin:0 auto;padding:32px 36px}

h1{font-size:26px;font-weight:700;letter-spacing:-.02em;margin:0 0 20px}
h2{font-size:16px;font-weight:600;margin:30px 0 12px;color:var(--ink)}
.flash{padding:11px 15px;border-radius:10px;margin-bottom:18px;background:var(--ok-bg);color:var(--ok);font-weight:500}.flash.err{background:var(--warn-bg);color:var(--warn)}
.banner{padding:11px 15px;border-radius:10px;margin-bottom:18px;background:var(--amber-bg);color:var(--amber);font-weight:500;border:1px solid color-mix(in srgb,var(--amber) 25%,transparent)}

/* cards + stats */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:28px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow)}
.cards .card{position:relative;overflow:hidden}.cards .card::before{content:"";position:absolute;inset:0 auto 0 0;width:4px;background:var(--accent);opacity:.8}
.card .n{font-size:30px;font-weight:700;letter-spacing:-.02em;line-height:1.2}
.card .l{color:var(--dim);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;margin-top:2px}

/* tables */
table{width:100%;border-collapse:separate;border-spacing:0;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
th,td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:11.5px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--dim);background:var(--hover)}
tr:last-child td{border-bottom:0}tbody tr:hover td,tr:hover td{background:color-mix(in srgb,var(--hover) 60%,transparent)}
td.thumb img{width:56px;height:56px;object-fit:cover;border-radius:9px;border:1px solid var(--line)}

.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:12px;font-weight:600}
.badge.draft{background:var(--hover);color:var(--soft)}.badge.scheduled{background:var(--accent-soft);color:var(--accent)}
.badge.posting{background:var(--amber-bg);color:var(--amber)}.badge.posted{background:var(--ok-bg);color:var(--ok)}.badge.failed{background:var(--warn-bg);color:var(--warn)}
a.badge:hover{text-decoration:none;filter:brightness(.95)}

/* buttons + forms */
.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:9px;border:1px solid var(--line);background:var(--card);color:var(--ink);font:inherit;font-weight:600;font-size:14px;cursor:pointer;box-shadow:var(--shadow);transition:background .15s,transform .05s}
.btn:hover{background:var(--hover);text-decoration:none}.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:hover{background:color-mix(in srgb,var(--accent) 85%,#000)}
.btn.danger{color:var(--warn)}.btn.sm{padding:5px 11px;font-size:13px}
.btn:disabled{opacity:.6;cursor:wait}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.top{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:18px}.top h1,.top h2{margin:0}
form.grid{display:grid;grid-template-columns:1fr 1fr;gap:18px 24px}form.grid .full{grid-column:1/-1}
label{display:block;font-size:13px;font-weight:600;color:var(--soft);margin-bottom:5px}
label.inline{display:inline-flex;align-items:center;gap:7px;font-weight:500;margin:0 12px 0 0}
input[type=text],input[type=url],input[type=email],input[type=password],input[type=datetime-local],input[type=date],input[type=time],input[type=number],select,textarea{width:100%;padding:9px 12px;border:1px solid var(--line);border-radius:9px;font:inherit;background:var(--card);color:var(--ink);transition:border-color .15s,box-shadow .15s}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
input[type=color]{width:56px;height:40px;padding:3px;border:1px solid var(--line);border-radius:9px;background:var(--card)}
input[type=checkbox]{accent-color:var(--accent);width:16px;height:16px}
textarea{min-height:120px;resize:vertical}
fieldset{border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;background:var(--card)}legend{font-size:13px;font-weight:700;color:var(--ink);padding:0 6px}
.preview img{max-width:360px;width:100%;border-radius:var(--radius);border:1px solid var(--line)}
.muted{color:var(--dim);font-size:13px}
pre{background:var(--hover);border:1px solid var(--line);border-radius:10px;padding:12px;overflow:auto;font-size:12.5px}
.kv{display:grid;grid-template-columns:190px 1fr;gap:8px 16px}.kv b{color:var(--soft);font-weight:500}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px 24px;margin-top:10px}.grid2 .full{grid-column:1/-1}

/* login */
body.auth{min-height:100vh;display:grid;place-items:center;background:radial-gradient(1200px 600px at 10% -10%,color-mix(in srgb,var(--accent) 30%,transparent),transparent),radial-gradient(900px 500px at 110% 110%,color-mix(in srgb,var(--accent) 22%,transparent),transparent),var(--bg)}
body.auth main{padding:16px}
.login{width:min(400px,100%);margin:0 auto;padding:32px 30px;border-radius:20px;box-shadow:0 20px 50px rgba(16,24,40,.12)}
.login .mark{width:46px;height:46px;font-size:22px;border-radius:13px;margin-bottom:16px}
.login h1{margin:0 0 4px}.login p.sub{color:var(--soft);margin:0 0 22px}.login .btn{width:100%;justify-content:center;padding:11px}

/* connection cards + setup guides */
.conn{margin-bottom:22px}.conn-h{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.conn-h h2{margin:0;font-size:18px}.pill{display:inline-flex;align-items:center;gap:6px;padding:3px 11px;border-radius:999px;font-size:12.5px;font-weight:600}
.pill::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.pill.ok{background:var(--ok-bg);color:var(--ok)}.pill.bad{background:var(--warn-bg);color:var(--warn)}.pill.mid{background:var(--amber-bg);color:var(--amber)}
details.guide{margin-top:14px;border:1px solid var(--line);border-radius:12px;background:color-mix(in srgb,var(--accent) 3%,var(--card))}
details.guide summary{cursor:pointer;padding:11px 15px;font-weight:600;color:var(--link,var(--accent));list-style:none}details.guide summary::-webkit-details-marker{display:none}
details.guide summary::before{content:"▸ ";}details.guide[open] summary::before{content:"▾ "}
.guide ol{margin:0;padding:4px 18px 14px 40px}.guide li{margin:7px 0;color:var(--soft)}.guide li b{color:var(--ink)}
.guide .tip{margin:0 15px 14px;padding:10px 13px;border-radius:9px;background:var(--accent-soft);color:var(--ink);font-size:13.5px}

/* phones + small tablets */
@media (max-width:900px){
 body.app{display:block}
 .side{position:sticky;height:auto;flex-direction:row;align-items:center;padding:10px 12px;gap:6px;z-index:10;overflow-x:auto}
 .logo{padding:0 8px 0 0}.logo span:last-child{display:none}
 .side nav{display:flex;gap:2px}.group{display:flex;gap:2px;margin:0}.gt{display:none}
 .side nav a span,.out span{display:none}.side nav a,.out button{padding:9px}
 .out{margin:0;border:0;padding:0}
 main{padding:20px 16px}
 form.grid,.grid2{grid-template-columns:1fr}.kv{grid-template-columns:1fr}.kv b{margin-top:6px}
 table{display:block;overflow-x:auto}
}

/* dashboard */
.count{display:inline-grid;place-items:center;min-width:20px;height:20px;padding:0 6px;border-radius:999px;background:var(--warn);color:#fff;font-size:12px}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:16px}
.kpi{display:flex;flex-direction:column;gap:4px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow);color:var(--ink);transition:border-color .15s,transform .15s}
.kpi:hover{text-decoration:none;border-color:var(--accent);transform:translateY(-1px)}
.kpi .l{font-size:13px;font-weight:600;color:var(--soft)}
.kpi .n{font-size:34px;font-weight:700;letter-spacing:-.03em;line-height:1.1;font-variant-numeric:tabular-nums}
.kpi.scheduled .n{color:var(--accent)}.kpi.posted .n{color:var(--ok)}
.kpi.alert{border-color:var(--warn);background:var(--warn-bg)}.kpi.alert .n{color:var(--warn)}
.dash-grid{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:14px;margin-bottom:8px}
.panel h3{margin:0 0 6px;font-size:15px}.panel p.muted{margin:0 0 12px}
.mini{display:grid;grid-template-columns:1fr 1fr;gap:14px 12px;margin-top:10px}
.mini div{display:flex;flex-direction:column}.mini .n{font-size:24px;font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums}.mini .l{font-size:12.5px;color:var(--dim)}
.conn-list{list-style:none;margin:10px 0 12px;padding:0;display:grid;gap:10px}
.conn-list li{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:14px;font-weight:500}
table.rows td{vertical-align:middle}
table.rows .num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
table.rows td.thumb{width:64px}
td.thumb img,.noimg{width:48px;height:48px;border-radius:10px;object-fit:cover;border:1px solid var(--line);display:block}
.noimg{background:repeating-linear-gradient(135deg,var(--hover) 0 6px,transparent 6px 12px)}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:999px;font-size:12.5px;font-weight:600;background:var(--hover);color:var(--soft);white-space:nowrap}
.chip.ok{background:var(--ok-bg);color:var(--ok)}.chip.bad{background:var(--warn-bg);color:var(--warn)}
a.chip:hover{text-decoration:none;filter:brightness(.96)}
.chip b{font-variant-numeric:tabular-nums}
@media (max-width:1000px){.dash-grid{grid-template-columns:1fr 1fr}.dash-grid .panel:first-child{grid-column:1/-1}}
@media (max-width:700px){
 .kpis{grid-template-columns:1fr 1fr}.dash-grid{grid-template-columns:1fr}
 .hide-sm{display:none}
 table.rows{display:table;overflow:visible}
 table.rows.posts,table.rows.posts tbody{display:block}
 table.rows.posts thead{display:none}
 table.rows.posts tr{display:grid;grid-template-columns:56px 1fr;gap:4px 12px;padding:12px 14px;border-bottom:1px solid var(--line)}
 table.rows.posts tr:last-child{border-bottom:0}
 table.rows.posts td{display:block;padding:0;border:0}
 table.rows.posts td.thumb{grid-row:span 3;width:auto}
 table.rows.posts td[colspan]{grid-column:1/-1}
}