:root {
  --ink: #0B1220; --navy: #10192E; --blue: #3B6EF5; --blue-dark: #2952C8;
  --amber: #FFB020; --mint: #16C79A; --red: #E5484D; --paper: #F6F7FB;
  --white: #FFFFFF; --slate: #64748B; --slate-light: #A7B0C0; --border: #E4E7F0;
  --radius: 12px; --shadow: 0 10px 30px rgba(11,18,32,0.08);
}
* { box-sizing: border-box; }
body { margin:0; font-family:'Inter',-apple-system,Segoe UI,sans-serif; background:var(--paper); color:var(--ink); }
h1,h2,h3,h4 { font-family:'Space Grotesk','Inter',sans-serif; font-weight:700; margin:0 0 0.5em; }
a { color: inherit; text-decoration: none; }
.admin-shell { display:flex; min-height:100vh; }
.admin-sidebar { width:230px; background:var(--ink); color:var(--white); flex-shrink:0; padding:22px 16px; }
.admin-sidebar .logo { display:block; margin-bottom:28px; }
.admin-sidebar nav a { display:flex; align-items:center; gap:10px; padding:10px 12px; border-radius:8px; color:var(--slate-light); font-size:0.9rem; font-weight:500; margin-bottom:4px; }
.admin-sidebar nav a:hover, .admin-sidebar nav a.active { background:rgba(59,110,245,0.18); color:var(--white); }
.admin-main { flex:1; padding:28px 32px; max-width: 1100px; }
.admin-topbar { display:flex; align-items:center; justify-content:space-between; margin-bottom:24px; }
.admin-topbar h1 { font-size:1.4rem; }

.card { background:var(--white); border:1px solid var(--border); border-radius:var(--radius); padding:22px; margin-bottom:20px; }
.stat-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-bottom:24px; }
.stat-card { background:var(--white); border:1px solid var(--border); border-radius:var(--radius); padding:18px; }
.stat-card .label { font-size:0.78rem; text-transform:uppercase; letter-spacing:0.04em; color:var(--slate); margin-bottom:6px; }
.stat-card .value { font-family:'Space Grotesk',sans-serif; font-size:1.6rem; font-weight:700; }

table.admin-table { width:100%; border-collapse:collapse; }
table.admin-table th { text-align:left; font-size:0.75rem; text-transform:uppercase; letter-spacing:0.04em; color:var(--slate); padding:10px 12px; border-bottom:1px solid var(--border); }
table.admin-table td { padding:12px; border-bottom:1px solid var(--border); vertical-align:middle; font-size:0.9rem; }
table.admin-table img { width:40px; height:40px; object-fit:contain; background:var(--paper); border-radius:6px; padding:4px; }

.btn { display:inline-flex; align-items:center; justify-content:center; gap:6px; padding:9px 16px; border-radius:8px; font-weight:600; font-size:0.85rem; border:none; cursor:pointer; font-family:inherit; }
.btn-primary { background:var(--blue); color:#fff; }
.btn-primary:hover { background:var(--blue-dark); }
.btn-outline { background:transparent; border:1.5px solid var(--border); color:var(--ink); }
.btn-outline:hover { border-color:var(--blue); color:var(--blue); }
.btn-danger { background:rgba(229,72,77,0.1); color:var(--red); }
.btn-danger:hover { background:rgba(229,72,77,0.18); }
.btn-sm { padding:6px 12px; font-size:0.8rem; }

.badge { display:inline-block; padding:3px 10px; border-radius:999px; font-size:0.72rem; font-weight:700; }
.badge-active { background:rgba(22,199,154,0.12); color:#0d7a5f; }
.badge-inactive { background:rgba(100,116,139,0.12); color:var(--slate); }
.badge-low { background:rgba(255,176,32,0.15); color:#a8660f; }
.badge-out { background:rgba(229,72,77,0.12); color:var(--red); }

.form-row { margin-bottom:16px; }
.form-row label { display:block; font-size:0.85rem; font-weight:600; margin-bottom:6px; }
.form-row input, .form-row textarea, .form-row select {
  width:100%; padding:10px 12px; border-radius:8px; border:1px solid var(--border); font-family:inherit; font-size:0.9rem;
}
.form-grid-2 { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-help { font-size:0.78rem; color:var(--slate); margin-top:4px; }

.alert { padding:12px 16px; border-radius:10px; font-size:0.88rem; margin-bottom:18px; }
.alert-success { background:rgba(22,199,154,0.12); color:#0d7a5f; }
.alert-error { background:rgba(229,72,77,0.1); color:#c0392b; }

.login-shell { min-height:100vh; display:flex; align-items:center; justify-content:center; background:var(--ink); }
.login-card { background:var(--white); border-radius:16px; padding:38px; width:100%; max-width:380px; box-shadow:var(--shadow); }
.login-card .logo { display:block; margin:0 auto 22px; }

@media (max-width: 800px) {
  .admin-shell { flex-direction:column; }
  .admin-sidebar { width:100%; }
  .stat-grid { grid-template-columns:1fr 1fr; }
  .form-grid-2 { grid-template-columns:1fr; }
}