*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#0f172a;--card:#1e293b;--border:#334155;--text:#e2e8f0;--muted:#94a3b8;--red:#C0100D;--green:#16a34a;--yellow:#d97706;--radius:12px}
body{font-family:'Inter',sans-serif;background:var(--bg);color:var(--text);min-height:100vh}

/* LOGIN */
.login-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:24px}
.login-box{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:40px;width:100%;max-width:380px}
.login-header{text-align:center;margin-bottom:28px}
.logo-icon{font-size:48px;margin-bottom:12px}
.login-header h1{font-size:22px;font-weight:700;margin-bottom:4px}
.login-header p{color:var(--muted);font-size:13px}

/* FORMS */
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:12px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px}
input,select{width:100%;padding:10px 12px;border:1.5px solid var(--border);border-radius:var(--radius);background:var(--bg);color:var(--text);font-size:14px;font-family:inherit}
input:focus,select:focus{outline:none;border-color:var(--red)}
.error-msg{color:#f87171;font-size:13px;margin-top:10px;text-align:center}

/* BUTTONS */
.btn{padding:10px 16px;border:none;border-radius:var(--radius);font-size:14px;font-weight:600;cursor:pointer;font-family:inherit;transition:opacity .2s}
.btn:hover{opacity:.85}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn-primary{background:var(--red);color:#fff}
.btn-secondary{background:var(--border);color:var(--text)}
.btn-block{width:100%;padding:12px}
.btn-sm{padding:6px 12px;font-size:12px}

/* LAYOUT */
#app{display:flex;min-height:100vh}
.sidebar{width:220px;background:var(--card);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:0;flex-shrink:0}
.sidebar-brand{padding:20px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px}
.sidebar-brand h2{font-size:16px;font-weight:700}
.sidebar-nav{flex:1;padding:12px 8px}
.nav-item{display:block;padding:10px 14px;border-radius:10px;color:var(--muted);text-decoration:none;font-size:14px;margin-bottom:2px;cursor:pointer;transition:all .15s}
.nav-item:hover,.nav-item.active{background:rgba(192,16,13,.15);color:#fff}
.sidebar-footer{padding:12px 8px;border-top:1px solid var(--border)}
.main-content{flex:1;padding:28px;overflow-y:auto}
.page{display:none}
.page.active{display:block}
.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.page-header h1{font-size:22px;font-weight:700}

/* STATS */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:28px}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px}
.stat-label{font-size:11px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px}
.stat-value{font-size:28px;font-weight:700;color:#fff}

/* CARDS */
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px;margin-bottom:16px}
.card h3{font-size:15px;font-weight:600;margin-bottom:8px}
.card p{font-size:13px;color:var(--muted);margin-bottom:16px}
.section-title{font-size:16px;font-weight:600;margin-bottom:14px;color:var(--muted)}

/* TABLE */
table{width:100%;border-collapse:collapse;font-size:13px}
th{padding:10px 14px;text-align:left;border-bottom:1px solid var(--border);color:var(--muted);font-weight:600;font-size:11px;text-transform:uppercase;letter-spacing:.5px}
td{padding:10px 14px;border-bottom:1px solid var(--border)}
tr:hover td{background:rgba(255,255,255,.03)}
.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:11px;font-weight:700}
.badge-green{background:rgba(22,163,74,.15);color:#4ade80}
.badge-yellow{background:rgba(217,119,6,.15);color:#fbbf24}
.badge-red{background:rgba(220,38,38,.15);color:#f87171}

/* KPI ROW */
.kpi-row{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:24px}
.kpi{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:16px 20px;flex:1;min-width:120px}
.kpi .label{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px}
.kpi .value{font-size:26px;font-weight:700}
.kpi .value.green{color:#4ade80}
.kpi .value.red{color:#f87171}
.kpi .value.yellow{color:#fbbf24}

/* FILTER */
.filter-bar{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:24px;align-items:center}
.filter-bar select{flex:1;min-width:160px;max-width:240px}

/* TOAST */
.toast{position:fixed;bottom:24px;right:24px;background:#1e293b;border:1px solid var(--border);color:#fff;padding:12px 20px;border-radius:12px;font-size:14px;z-index:9999;box-shadow:0 4px 20px rgba(0,0,0,.4)}

/* Responsive */
@media(max-width:640px){
  #app{flex-direction:column}
  .sidebar{width:100%;flex-direction:row;overflow-x:auto}
  .sidebar-nav{display:flex;flex-direction:row;padding:8px}
  .main-content{padding:16px}
}