* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --bg: #0f1117;
  --bg2: #1a1d27;
  --bg3: #222536;
  --border: #2e3148;
  --green: #25d366;
  --green2: #1db954;
  --text: #e8eaf0;
  --text2: #8b8fa8;
  --red: #ef4444;
  --yellow: #f59e0b;
  --blue: #3b82f6;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
}
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }
.layout { display: flex; min-height: 100vh; }
.sidebar { width: 240px; background: var(--bg2); border-right: 1px solid var(--border); display: flex; flex-direction: column; position: fixed; height: 100vh; z-index: 100; }
.sidebar-logo { display: flex; align-items: center; gap: 12px; padding: 24px 20px; border-bottom: 1px solid var(--border); }
.logo-icon { width: 40px; height: 40px; background: linear-gradient(135deg, var(--green), var(--green2)); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 20px; color: #fff; }
.logo-text { font-size: 18px; font-weight: 700; color: var(--text); }
.sidebar-nav { flex: 1; padding: 16px 12px; display: flex; flex-direction: column; gap: 4px; }
.nav-item { display: flex; align-items: center; gap: 12px; padding: 11px 14px; border-radius: 8px; color: var(--text2); text-decoration: none; font-size: 14px; font-weight: 500; transition: all 0.2s; }
.nav-item:hover { background: var(--bg3); color: var(--text); }
.nav-item.active { background: rgba(37,211,102,0.12); color: var(--green); }
.nav-item i { width: 18px; text-align: center; font-size: 15px; }
.sidebar-footer { padding: 16px 12px; border-top: 1px solid var(--border); }
.main { flex: 1; margin-left: 240px; display: flex; flex-direction: column; min-height: 100vh; }
.topbar { background: var(--bg2); border-bottom: 1px solid var(--border); padding: 0 32px; height: 64px; display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 50; }
.page-title { font-size: 20px; font-weight: 700; color: var(--text); }
.admin-badge { background: rgba(37,211,102,0.1); color: var(--green); padding: 6px 14px; border-radius: 20px; font-size: 13px; font-weight: 600; border: 1px solid rgba(37,211,102,0.2); }
.content { padding: 32px; flex: 1; }
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; margin-bottom: 32px; }
.stat-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; display: flex; align-items: center; gap: 16px; }
.stat-icon { width: 52px; height: 52px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 22px; }
.stat-icon.green { background: rgba(37,211,102,0.12); color: var(--green); }
.stat-icon.blue { background: rgba(59,130,246,0.12); color: var(--blue); }
.stat-icon.yellow { background: rgba(245,158,11,0.12); color: var(--yellow); }
.stat-icon.red { background: rgba(239,68,68,0.12); color: var(--red); }
.stat-info { flex: 1; }
.stat-value { font-size: 28px; font-weight: 700; color: var(--text); line-height: 1; }
.stat-label { font-size: 13px; color: var(--text2); margin-top: 4px; }
.card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-bottom: 24px; }
.card-header { padding: 20px 24px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.card-title { font-size: 16px; font-weight: 600; color: var(--text); }
.card-body { padding: 24px; }
table { width: 100%; border-collapse: collapse; }
thead th { padding: 12px 16px; text-align: left; font-size: 12px; font-weight: 600; color: var(--text2); text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 1px solid var(--border); background: var(--bg3); }
tbody td { padding: 14px 16px; font-size: 14px; color: var(--text); border-bottom: 1px solid var(--border); }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: rgba(255,255,255,0.02); }
.badge { display: inline-flex; align-items: center; gap: 5px; padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge-green { background: rgba(37,211,102,0.12); color: var(--green); border: 1px solid rgba(37,211,102,0.2); }
.badge-red { background: rgba(239,68,68,0.12); color: var(--red); border: 1px solid rgba(239,68,68,0.2); }
.badge-yellow { background: rgba(245,158,11,0.12); color: var(--yellow); border: 1px solid rgba(245,158,11,0.2); }
.badge-blue { background: rgba(59,130,246,0.12); color: var(--blue); border: 1px solid rgba(59,130,246,0.2); }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px; border-radius: 8px; font-size: 14px; font-weight: 600; cursor: pointer; border: none; text-decoration: none; transition: all 0.2s; }
.btn-primary { background: linear-gradient(135deg, var(--green), var(--green2)); color: #fff; }
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(37,211,102,0.3); }
.btn-danger { background: rgba(239,68,68,0.1); color: var(--red); border: 1px solid rgba(239,68,68,0.2); }
.btn-danger:hover { background: var(--red); color: #fff; }
.btn-secondary { background: var(--bg3); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-icon { padding: 7px 10px; }
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 13px; font-weight: 600; color: var(--text2); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.4px; }
.form-control { width: 100%; padding: 11px 14px; background: var(--bg3); border: 1px solid var(--border); border-radius: 8px; color: var(--text); font-size: 14px; transition: border-color 0.2s; outline: none; }
.form-control:focus { border-color: var(--green); box-shadow: 0 0 0 3px rgba(37,211,102,0.1); }
.form-control option { background: var(--bg3); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.alert { padding: 14px 18px; border-radius: 8px; font-size: 14px; margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
.alert-success { background: rgba(37,211,102,0.1); color: var(--green); border: 1px solid rgba(37,211,102,0.2); }
.alert-error { background: rgba(239,68,68,0.1); color: var(--red); border: 1px solid rgba(239,68,68,0.2); }
.key-box { font-family: monospace; font-size: 13px; background: var(--bg3); padding: 8px 12px; border-radius: 6px; border: 1px solid var(--border); cursor: pointer; transition: all 0.2s; display: inline-flex; align-items: center; gap: 8px; max-width: 260px; overflow: hidden; }
.key-box:hover { border-color: var(--green); color: var(--green); }
.key-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg); }
.login-box { background: var(--bg2); border: 1px solid var(--border); border-radius: 16px; padding: 40px; width: 100%; max-width: 420px; box-shadow: var(--shadow); }
.login-logo { text-align: center; margin-bottom: 32px; }
.login-logo .logo-icon { width: 64px; height: 64px; font-size: 28px; margin: 0 auto 12px; border-radius: 16px; background: linear-gradient(135deg, var(--green), var(--green2)); display: flex; align-items: center; justify-content: center; color: #fff; }
.login-logo h1 { font-size: 24px; font-weight: 700; color: var(--text); }
.login-logo p { color: var(--text2); font-size: 14px; margin-top: 4px; }
.toast { position: fixed; bottom: 24px; right: 24px; background: var(--bg2); border: 1px solid var(--green); color: var(--green); padding: 12px 20px; border-radius: 8px; font-size: 14px; font-weight: 600; opacity: 0; transform: translateY(10px); transition: all 0.3s; z-index: 9999; }
.toast.show { opacity: 1; transform: translateY(0); }
.expiring { color: var(--yellow); }
.expired { color: var(--red); }
.actions { display: flex; gap: 6px; }
.empty-state { text-align: center; padding: 60px 20px; color: var(--text2); }
.empty-state i { font-size: 48px; margin-bottom: 16px; opacity: 0.3; }
.empty-state p { font-size: 15px; }