:root{
  --bg:#0f1115; --panel:#171a21; --panel2:#1e222b; --border:#2a2f3a;
  --text:#e7e9ee; --muted:#9aa1b1; --brand:#25d366; --brand2:#128c7e;
  --blue:#4f7cff; --red:#ff5c6c; --amber:#ffb020; --radius:12px;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);}
a{color:inherit;text-decoration:none}
.app-shell{display:flex;min-height:100vh}
.sidebar{width:230px;background:var(--panel);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:20px 14px;position:sticky;top:0;height:100vh}
.brand{font-size:20px;font-weight:800;margin-bottom:24px;padding:0 8px}
.brand span{color:var(--brand)}
.sidebar nav{display:flex;flex-direction:column;gap:4px;flex:1}
.sidebar nav a{padding:10px 12px;border-radius:8px;color:var(--muted);font-size:14px;font-weight:500}
.sidebar nav a:hover{background:var(--panel2);color:var(--text)}
.sidebar nav a.active{background:var(--brand);color:#08130d}
.logout-form{display:flex;flex-direction:column;gap:8px;border-top:1px solid var(--border);padding-top:14px}
.user-chip{font-size:13px;color:var(--muted)}
.user-chip .role{background:var(--panel2);padding:2px 8px;border-radius:20px;font-size:11px;margin-left:6px}
.logout-form button{background:var(--panel2);border:1px solid var(--border);color:var(--text);padding:8px;border-radius:8px;cursor:pointer}
.content{flex:1;padding:28px 32px;max-width:1400px}
h1.page-title{font-size:22px;margin:0 0 20px}
.subtitle{color:var(--muted);font-size:13px;margin-top:-14px;margin-bottom:20px}

.grid-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px;margin-bottom:24px}
.stat-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:16px}
.stat-card .label{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.5px}
.stat-card .value{font-size:26px;font-weight:700;margin-top:6px}
.stat-card .value.green{color:var(--brand)}
.stat-card .value.blue{color:var(--blue)}
.stat-card .value.amber{color:var(--amber)}

.panel{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:20px}
.panel h2{margin:0 0 14px;font-size:15px}
.two-col{display:grid;grid-template-columns:2fr 1fr;gap:20px}
@media(max-width:1000px){.two-col{grid-template-columns:1fr}}

table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:10px 8px;text-align:left;border-bottom:1px solid var(--border)}
th{color:var(--muted);font-weight:600;font-size:11px;text-transform:uppercase}
tr:hover td{background:var(--panel2)}

.badge{display:inline-block;padding:2px 9px;border-radius:20px;font-size:11px;font-weight:600}
.badge.green{background:rgba(37,211,102,.15);color:var(--brand)}
.badge.amber{background:rgba(255,176,32,.15);color:var(--amber)}
.badge.red{background:rgba(255,92,108,.15);color:var(--red)}
.badge.blue{background:rgba(79,124,255,.15);color:var(--blue)}
.badge.gray{background:rgba(154,161,177,.15);color:var(--muted)}

.btn{display:inline-block;background:var(--brand);color:#08130d;border:none;padding:9px 16px;border-radius:8px;font-weight:600;font-size:13px;cursor:pointer}
.btn.secondary{background:var(--panel2);color:var(--text);border:1px solid var(--border)}
.btn.danger{background:var(--red);color:#fff}
.btn.small{padding:5px 10px;font-size:12px}
form.inline{display:inline}

.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid.full{grid-template-columns:1fr}
label{font-size:12px;color:var(--muted);display:block;margin-bottom:5px}
input[type=text],input[type=number],input[type=password],input[type=url],select,textarea{
  width:100%;background:var(--bg);border:1px solid var(--border);border-radius:8px;color:var(--text);
  padding:10px 12px;font-size:13px;font-family:inherit
}
textarea{min-height:70px;resize:vertical}
.field{margin-bottom:14px}
.checkbox-field{display:flex;align-items:center;gap:8px;margin-bottom:14px}
.checkbox-field input{width:auto}

.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:radial-gradient(circle at top,#182236,#0f1115)}
.login-card{width:360px;background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:32px}
.login-card h1{text-align:center;margin-bottom:4px}
.login-card p{text-align:center;color:var(--muted);font-size:13px;margin-bottom:24px}
.login-error{background:rgba(255,92,108,.15);color:var(--red);padding:10px;border-radius:8px;font-size:13px;margin-bottom:16px}

.link-url{font-family:monospace;font-size:12px;background:var(--bg);padding:6px 10px;border-radius:6px;border:1px solid var(--border);word-break:break-all}
.copy-btn{cursor:pointer;color:var(--blue);font-size:12px;margin-left:6px}

.qr-box{display:flex;flex-direction:column;align-items:center;gap:10px;padding:16px}
.qr-box img{width:220px;height:220px;background:#fff;padding:8px;border-radius:8px}

.chat-bubble{max-width:70%;padding:10px 14px;border-radius:14px;margin-bottom:8px;font-size:13px;line-height:1.4}
.chat-bubble.in{background:var(--panel2);align-self:flex-start}
.chat-bubble.out{background:var(--brand2);align-self:flex-end;color:#fff}
.chat-log{display:flex;flex-direction:column;max-height:480px;overflow-y:auto;padding:8px}
.chat-meta{font-size:10px;color:var(--muted);margin-top:2px}

.biolink-preview{width:340px;margin:0 auto;background:#111;border-radius:20px;padding:24px;text-align:center}
.biolink-preview .avatar{width:70px;height:70px;border-radius:50%;background:var(--panel2);margin:0 auto 10px}
.biolink-item{display:block;background:var(--panel2);border:1px solid var(--border);border-radius:10px;padding:12px;margin-bottom:10px;font-weight:600}

.empty{color:var(--muted);font-size:13px;padding:20px;text-align:center}
.error-page{display:flex;align-items:center;justify-content:center;min-height:100vh;color:var(--text);background:var(--bg);flex-direction:column;gap:10px}