:root{
  --bg:#0b0b0c; --panel:#121217; --panel-2:#161823;
  --text:#e7e7ea; --muted:#a7a7b3; --brand:#4c6ef5;
  --danger:#ef4444; --success:#10b981; --radius:12px;
}
*{box-sizing:border-box} html,body{height:100%}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
a{color:var(--brand);text-decoration:none} a:hover{text-decoration:underline}
.sidebar{width:240px;height:100vh;position:fixed;top:0;left:0;background:linear-gradient(180deg,#0a0a0f 0%,#0b0b10 100%);border-right:1px solid #1e2030;padding:24px 16px}
.sidebar .logo{display:flex;align-items:center;gap:10px;padding:12px 8px 24px;border-bottom:1px solid #1e2030;margin-bottom:16px}
.sidebar .logo img{height:28px}
.sidebar .logo .brand{font-weight:700;letter-spacing:.5px;color:#bfc7ff}
.nav{list-style:none;padding:0;margin:0}.nav li{margin:8px 0}
.nav a{display:block;padding:10px 14px;border-radius:10px;color:var(--text);background:transparent;transition:.2s}
.nav a:hover{background:#15172a;color:#cfd6ff}
.main{margin-left:240px;padding:24px}
.header{background:var(--panel);padding:16px 18px;border-radius:var(--radius);display:flex;align-items:center;justify-content:space-between;border:1px solid #1e2030}
.card{background:var(--panel);border:1px solid #1f2030;border-radius:var(--radius);padding:16px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 14px;border-radius:10px;border:0;background:var(--brand);color:white;cursor:pointer;font-weight:600}
.btn:hover{filter:brightness(1.1)} .btn.secondary{background:#23263a;color:#cfd6ff} .btn.danger{background:var(--danger)}
.table{width:100%;border-collapse:collapse}.table th,.table td{border-bottom:1px solid #26283b;padding:10px;text-align:left}.table th{color:#c3c8ff;font-weight:600;background:var(--panel-2)}
.input,.select,.textarea{width:100%;padding:10px 12px;border-radius:10px;border:1px solid #24263a;background:#0f1020;color:var(--text)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px} @media(max-width:900px){.form-row{grid-template-columns:1fr}}
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}
.login-card{width:min(420px,96vw);background:var(--panel);border:1px solid #1e2030;border-radius:16px;padding:24px}
.login-card .logo{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.login-title{margin:8px 0 18px;color:#c3c8ff}
.alert{padding:10px 12px;border-radius:8px;margin-bottom:12px;background:#2a1020;color:#ff9db5;border:1px solid #4a1f39}