:root{--bg:#0b1321;--card:#121a2c;--muted:#90a0c5;--acc:#4da3ff;--ok:#23c552;--err:#e74646}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:#0a0f1a;color:#e8eef9}
.navbar{display:flex;align-items:center;justify-content:space-between;padding:12px 18px;background:#0f172a;border-bottom:1px solid #1f2a44;position:sticky;top:0;z-index:10}
.brand{font-weight:700;letter-spacing:.5px}
.nav a{margin:0 8px;color:#cfe1ff;text-decoration:none;font-size:.95rem}
.nav a:hover{color:#fff}
.menu{display:none;background:#1b2947;color:#cfe1ff;border:none;padding:8px 10px;border-radius:10px}
.container{max-width:1100px;margin:20px auto;padding:0 14px}
.footer{padding:16px;color:#9bb0d4;text-align:center;border-top:1px solid #1f2a44;margin-top:32px}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.card{background:#121a2c;border:1px solid #1f2a44;border-radius:16px;padding:18px}
.metric{font-size:1.6rem;font-weight:700}
.label{color:#9bb0d4;margin-top:6px}
.panel{background:#121a2c;border:1px solid #1f2a44;border-radius:16px;padding:16px;margin-top:16px}
.two-col{display:grid;grid-template-columns:2fr 1fr;gap:14px}
.header-row{display:flex;justify-content:space-between;align-items:center}
.btn,button{background:#2563eb;color:white;border:none;padding:10px 14px;border-radius:12px;text-decoration:none;cursor:pointer}
.btn:hover,button:hover{filter:brightness(1.1)}
table{width:100%;border-collapse:collapse;border:1px solid #1f2a44;background:#0f1526}
th,td{padding:10px;border-bottom:1px solid #1f2a44} thead th{background:#111a31;color:#b9c8ec;text-align:left}
.form .row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:10px}
input,select{width:100%;padding:10px;border:1px solid #263555;border-radius:10px;background:#0c1426;color:#e8eef9}
.flash-wrap{margin:8px 0}
.flash{padding:10px;border-radius:10px;margin-bottom:8px}
.flash.ok{background:#0f3a20;color:#b5f3c4;border:1px solid #1f7a3a}
.flash.error{background:#3a1010;color:#ffc5c5;border:1px solid #7a1f1f}
.auth-card{max-width:400px;margin:60px auto;background:#121a2c;border:1px solid #1f2a44;padding:20px;border-radius:16px}
.hint{color:#98a9cf}
.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.tool{display:block;background:#121a2c;border:1px dashed #28406c;border-radius:14px;text-align:center;padding:22px;text-decoration:none;color:#d7e6ff}
.empty{text-align:center;padding:40px}
@media (max-width:900px){.grid{grid-template-columns:repeat(2,1fr)}.two-col{grid-template-columns:1fr} .tool-grid{grid-template-columns:1fr}}
@media (max-width:640px){.nav{display:none}.menu{display:inline-block}}