:root{--bg:#080c14;--bg2:#0e1420;--bg3:#141b28;--card:#111827;--border:#1e2a3a;--accent:#3b82f6;--accent2:#6366f1;--green:#10b981;--red:#ef4444;--yellow:#f59e0b;--text:#e2e8f0;--text2:#94a3b8;--text3:#4b5563;--font:'DM Sans',sans-serif;--mono:'Space Mono',monospace;--radius:12px;--sidebar:240px;--shadow:0 4px 24px rgba(0,0,0,.4)}
*{margin:0;padding:0;box-sizing:border-box}
html,body{height:100%;font-family:var(--font);background:var(--bg);color:var(--text);font-size:14px;line-height:1.6}
body{overflow-x:hidden;color-scheme:dark}
body[data-theme="light"]{color-scheme:light;--bg:#f3f6fb;--bg2:#fff;--bg3:#e8eef7;--card:#fff;--border:#d7e0eb;--text:#172334;--text2:#526176;--text3:#7a8798;--shadow:0 8px 28px rgba(15,23,42,.08)}
a{color:inherit;text-decoration:none}
input,select,textarea,button{font-family:inherit;font-size:inherit}
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:var(--bg2)}
::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}

.layout{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar);flex-shrink:0;background:var(--bg2);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;height:100vh;overflow-y:auto;box-shadow:var(--shadow);transition:transform .3s;z-index:100}
.sidebar-backdrop{position:fixed;inset:0;background:rgba(8,12,20,.55);opacity:0;pointer-events:none;transition:opacity .2s;z-index:90}
.sidebar-backdrop.open{opacity:1;pointer-events:auto}
.sidebar-logo{padding:20px 18px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:10px}
.sidebar-logo .logo-icon{width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--accent),var(--accent2));display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:#fff;flex-shrink:0}
.sidebar-logo .logo-text{font-weight:700;font-size:14px;color:var(--text);line-height:1.2}
.sidebar-logo .logo-text small{display:block;font-size:10px;color:var(--text2);font-weight:400}
.sidebar-nav{flex:1;padding:12px 10px;overflow-y:auto}
.nav-section{margin-bottom:20px}
.nav-label{font-size:10px;font-weight:700;letter-spacing:.1em;color:var(--text3);text-transform:uppercase;padding:6px 8px 4px}
.nav-item{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:8px;color:var(--text2);cursor:pointer;transition:.15s;margin-bottom:2px;white-space:nowrap}
.nav-item:hover{background:var(--bg3);color:var(--text)}
.nav-item.active{background:rgba(59,130,246,.15);color:var(--accent);font-weight:600}
.nav-item i{width:16px;text-align:center;flex-shrink:0}
.sidebar-footer{padding:12px 10px;border-top:1px solid var(--border)}
.user-badge{display:flex;align-items:center;gap:10px;padding:10px 12px;background:var(--bg3);border-radius:8px}
.user-avatar{width:30px;height:30px;border-radius:6px;background:linear-gradient(135deg,var(--accent),var(--accent2));display:flex;align-items:center;justify-content:center;font-weight:700;font-size:12px;color:#fff;flex-shrink:0}
.user-info{flex:1;min-width:0}
.user-name{font-weight:600;font-size:13px;color:var(--text);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.user-role{font-size:10px;color:var(--text2);text-transform:uppercase;letter-spacing:.05em}
.btn-logout{padding:5px 8px;border-radius:6px;background:transparent;border:none;color:var(--text3);cursor:pointer;transition:.15s}
.btn-logout:hover{color:var(--red);background:rgba(239,68,68,.1)}

.main{margin-left:var(--sidebar);flex:1;display:flex;flex-direction:column;min-height:100vh;min-width:0}
.topbar{min-height:56px;border-bottom:1px solid var(--border);background:var(--bg2);display:flex;align-items:center;justify-content:space-between;padding:0 24px;gap:16px;flex-shrink:0;position:sticky;top:0;z-index:50}
.topbar-left{display:flex;align-items:center;gap:12px;min-width:0;flex:1}
.mobile-menu-btn{display:none;align-items:center;justify-content:center;width:38px;height:38px;background:var(--bg3);border:1px solid var(--border);border-radius:8px;color:var(--text);cursor:pointer;flex-shrink:0}
.theme-toggle{display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:8px;border:1px solid var(--border);background:var(--bg3);color:var(--text);cursor:pointer;font-weight:600;transition:.15s}
.theme-toggle:hover{background:var(--card)}
.theme-toggle i{font-size:13px}
.theme-toggle-text{font-size:12px}
.topbar-title{font-weight:600;font-size:16px;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.page-content{padding:clamp(14px,2vw,24px);flex:1;min-width:0}

.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.card-header{padding:16px 20px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.card-title{font-weight:600;font-size:15px;display:flex;align-items:center;gap:8px}
.card-body{padding:20px}

.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(200px,100%),1fr));gap:16px;margin-bottom:24px}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;position:relative;overflow:hidden}
.stat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px}
.stat-card.blue::before{background:var(--accent)}
.stat-card.green::before{background:var(--green)}
.stat-card.yellow::before{background:var(--yellow)}
.stat-card.red::before{background:var(--red)}
.stat-card.purple::before{background:var(--accent2)}
.stat-label{font-size:12px;color:var(--text2);text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px}
.stat-value{font-size:28px;font-weight:700;font-family:var(--mono);color:var(--text);line-height:1}
.stat-icon{position:absolute;right:16px;top:50%;transform:translateY(-50%);font-size:28px;opacity:.1}

.table-wrap{overflow-x:auto}
table{width:100%;min-width:640px;border-collapse:collapse}
th{text-align:left;padding:10px 14px;font-size:11px;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--text2);background:var(--bg2);border-bottom:1px solid var(--border)}
td{padding:12px 14px;border-bottom:1px solid var(--border);color:var(--text)}
tr:last-child td{border-bottom:none}
tr:hover td{background:rgba(255,255,255,.02)}

.form-group{margin-bottom:16px}
.form-label{display:block;font-size:12px;font-weight:600;color:var(--text2);margin-bottom:6px;text-transform:uppercase;letter-spacing:.04em}
.form-control{width:100%;padding:9px 12px;background:var(--bg2);border:1px solid var(--border);border-radius:8px;color:var(--text);transition:.15s}
.form-control:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(59,130,246,.12)}
.form-control::placeholder{color:var(--text3)}
.form-hint{font-size:11px;color:var(--text3);margin-top:4px}
.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(220px,100%),1fr));gap:16px}

.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:8px;font-weight:600;font-size:13px;cursor:pointer;border:none;transition:.15s;line-height:1.4;white-space:nowrap}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#2563eb}
.btn-danger{background:var(--red);color:#fff}
.btn-danger:hover{background:#dc2626}
.btn-success{background:var(--green);color:#fff}
.btn-success:hover{background:#059669}
.btn-secondary{background:var(--bg3);color:var(--text);border:1px solid var(--border)}
.btn-secondary:hover{background:var(--border)}
.btn-sm{padding:5px 10px;font-size:12px}

.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:20px;font-size:11px;font-weight:600;letter-spacing:.03em}
.badge-green{background:rgba(16,185,129,.15);color:var(--green)}
.badge-red{background:rgba(239,68,68,.15);color:var(--red)}
.badge-yellow{background:rgba(245,158,11,.15);color:var(--yellow)}
.badge-blue{background:rgba(59,130,246,.15);color:var(--accent)}
.badge-gray{background:rgba(148,163,184,.1);color:var(--text2)}

.alert{padding:12px 16px;border-radius:8px;margin-bottom:16px;font-size:13px;display:flex;align-items:center;gap:8px}
.alert-success{background:rgba(16,185,129,.12);border:1px solid rgba(16,185,129,.25);color:var(--green)}
.alert-danger{background:rgba(239,68,68,.12);border:1px solid rgba(239,68,68,.25);color:var(--red)}
.alert-info{background:rgba(59,130,246,.12);border:1px solid rgba(59,130,246,.25);color:var(--accent)}

.text-accent{color:var(--accent)}.text-green{color:var(--green)}.text-red{color:var(--red)}.text-muted{color:var(--text2)}.mono{font-family:var(--mono)}
.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-2{gap:8px}.gap-3{gap:12px}
.mb-0{margin-bottom:0}.mb-4{margin-bottom:16px}.mb-6{margin-bottom:24px}.mt-4{margin-top:16px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.w-full{width:100%}
.img-preview{width:60px;height:60px;object-fit:cover;border-radius:6px;border:1px solid var(--border)}
.code-box{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:12px 14px;font-family:var(--mono);font-size:12px;color:var(--accent);word-break:break-all}

/* Login page */
.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg)}
.login-page .login-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:40px;max-width:400px;width:100%}
.login-page .login-box h2{text-align:center;margin-bottom:24px;font-size:22px;color:var(--text)}
.login-page .login-box .login-logo{display:block;margin:0 auto 20px;max-width:120px;max-height:120px}
.login-page .input-group{position:relative;margin-bottom:16px}
.login-page .input-group input{width:100%;padding:11px 12px 11px 42px;background:var(--bg2);border:1px solid var(--border);border-radius:8px;color:var(--text);font-size:14px}
.login-page .input-group input:focus{outline:none;border-color:var(--accent)}
.login-page .input-group .input-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%)}
.login-page .login-box button[type="submit"]{width:100%;padding:12px;background:var(--accent);color:#fff;border:none;border-radius:8px;font-weight:600;font-size:15px;cursor:pointer;transition:.15s}
.login-page .login-box button[type="submit"]:hover{background:#2563eb}

/* Color preview swatch */
.color-swatch{display:inline-block;width:28px;height:28px;border-radius:6px;border:2px solid var(--border);vertical-align:middle;cursor:pointer}
input[type="color"]{padding:0;border:none;width:40px;height:34px;cursor:pointer;background:transparent}

@media(max-width:768px){
  .sidebar{transform:translateX(-100%);width:min(86vw,320px);height:100vh}
  .sidebar.open{transform:translateX(0)}
  .main{margin-left:0}
  .mobile-menu-btn{display:inline-flex}
  .topbar{padding:10px 14px}
  .page-content{padding:12px}
  .stats-grid{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .theme-toggle-text{display:none}
}