*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#0f1419;--card:#1a1f2e;--surface:#242938;--text:#e2e8f0;--text2:#94a3b8;--border:#334155;--green:#10b981;--green2:#059669;--red:#ef4444;--blue:#3b82f6;--orange:#f59e0b;--radius:14px;--shadow:0 4px 24px rgba(0,0,0,0.3)}
[data-theme="light"]{--bg:#f8fafc;--card:#fff;--surface:#f1f5f9;--text:#0f172a;--text2:#64748b;--border:#e2e8f0;--shadow:0 4px 24px rgba(0,0,0,0.08)}

body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}

/* Layout */
.app-container{display:flex;min-height:100vh}
.sidebar{width:260px;background:var(--card);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;height:100vh;z-index:100;transition:transform .3s}
.sidebar-header{padding:20px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border)}
.logo{display:flex;align-items:center;gap:12px}
.logo-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--green),var(--green2));border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:20px}
.logo-text{font-size:18px;font-weight:700}
.sidebar-close{display:none;background:none;border:none;color:var(--text);font-size:20px;cursor:pointer}
.sidebar-nav{flex:1;padding:12px}
.nav-item{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:10px;color:var(--text2);text-decoration:none;transition:.2s;margin-bottom:4px}
.nav-item:hover,.nav-item.active{background:var(--surface);color:var(--green)}
.nav-item.active{font-weight:600}
.nav-icon{font-size:18px}
.sidebar-footer{padding:12px;border-top:1px solid var(--border)}
.logout{color:var(--red)!important}
.main-content{flex:1;margin-left:260px;min-height:100vh}
.top-bar{display:flex;align-items:center;padding:16px 28px;border-bottom:1px solid var(--border);background:var(--card);position:sticky;top:0;z-index:50}
.menu-btn{display:none;background:none;border:none;color:var(--text);font-size:24px;cursor:pointer;margin-right:16px}
.page-title{font-size:18px;font-weight:700;flex:1}
.top-actions{display:flex;align-items:center;gap:12px}
.theme-toggle{background:none;border:none;font-size:20px;cursor:pointer;padding:8px;border-radius:8px;transition:.2s}
.theme-toggle:hover{background:var(--surface)}
.admin-badge{background:linear-gradient(135deg,var(--green),var(--green2));color:#fff;padding:6px 14px;border-radius:20px;font-size:12px;font-weight:600}
.content-body{padding:28px}

/* Stats */
.welcome-banner{background:linear-gradient(135deg,#0d9668,#10b981,#34d399);border-radius:var(--radius);padding:28px;margin-bottom:24px;color:#fff}
.welcome-banner h1{font-size:24px;margin-bottom:8px}
.welcome-banner .highlight{color:#d1fae5}
.welcome-banner p{opacity:.8;font-size:14px}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;display:flex;align-items:center;gap:16px;box-shadow:var(--shadow)}
.stat-icon{font-size:32px;width:56px;height:56px;background:var(--surface);border-radius:14px;display:flex;align-items:center;justify-content:center}
.stat-value{font-size:28px;font-weight:700;display:block}
.stat-label{font-size:13px;color:var(--text2)}

/* Charts */
.charts-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:24px}
.chart-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.chart-card h3{margin-bottom:16px;font-size:16px}

/* Tables */
.table-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);margin-bottom:16px;overflow-x:auto}
.table-card h3{margin-bottom:16px;font-size:16px}
table{width:100%;border-collapse:collapse}
th{text-align:left;padding:12px 16px;font-size:13px;color:var(--text2);border-bottom:1px solid var(--border);font-weight:600}
td{padding:12px 16px;font-size:14px;border-bottom:1px solid var(--border)}
.mono{font-family:monospace;font-size:12px;color:var(--text2)}

/* Forms */
.form-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);margin-bottom:16px}
.form-card h3{margin-bottom:16px;font-size:16px}
.form-desc{color:var(--text2);font-size:14px;margin-bottom:16px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:14px;font-weight:500;margin-bottom:6px}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text);font-size:14px;transition:.2s}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--green)}
textarea{resize:vertical;font-family:inherit}

/* Buttons */
.btn{padding:12px 24px;border:none;border-radius:10px;font-size:14px;font-weight:600;cursor:pointer;transition:.2s;display:inline-flex;align-items:center;gap:8px}
.btn-primary{background:linear-gradient(135deg,var(--green),var(--green2));color:#fff}
.btn-primary:hover{opacity:.9;transform:translateY(-1px)}
.btn-outline{background:transparent;border:2px solid var(--green);color:var(--green)}
.btn-full{width:100%;justify-content:center}
.btn-row{display:flex;gap:12px}

/* Alerts */
.alert{padding:14px 18px;border-radius:10px;font-size:14px;margin-bottom:16px;font-weight:500}
.alert-success{background:rgba(16,185,129,0.15);color:var(--green);border:1px solid rgba(16,185,129,0.3)}
.alert-error{background:rgba(239,68,68,0.15);color:var(--red);border:1px solid rgba(239,68,68,0.3)}

/* Badges */
.badge{padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600}
.badge-success{background:rgba(16,185,129,0.15);color:var(--green)}
.badge-error{background:rgba(239,68,68,0.15);color:var(--red)}

/* Toggle */
.toggle-row{display:flex;align-items:center;gap:16px}
.toggle-label{font-weight:500}
.toggle{position:relative;display:inline-block;width:52px;height:28px}
.toggle input{opacity:0;width:0;height:0}
.toggle-slider{position:absolute;cursor:pointer;inset:0;background:var(--border);border-radius:28px;transition:.3s}
.toggle-slider::before{content:'';position:absolute;height:22px;width:22px;left:3px;bottom:3px;background:#fff;border-radius:50%;transition:.3s}
.toggle input:checked+.toggle-slider{background:var(--green)}
.toggle input:checked+.toggle-slider::before{transform:translateX(24px)}
.status-on{color:var(--green);font-weight:600}
.status-off{color:var(--text2);font-weight:600}

/* RPC Grid */
.rpc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}
.rpc-card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:16px;display:flex;justify-content:space-between;align-items:center}
.rpc-name{font-weight:600;font-size:14px}

/* Info card */
.info-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-top:16px;font-size:14px;color:var(--text2)}

/* Pagination */
.pagination{display:flex;gap:8px;justify-content:center;margin-top:16px}
.page-btn{padding:8px 16px;border-radius:8px;background:var(--surface);color:var(--text);text-decoration:none;font-size:14px;border:1px solid var(--border)}
.page-btn.active{background:var(--green);color:#fff;border-color:var(--green)}

/* Login */
.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg)}
.login-container{width:100%;max-width:400px;padding:20px}
.login-card{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:40px;box-shadow:var(--shadow);text-align:center}
.login-logo{width:64px;height:64px;background:linear-gradient(135deg,var(--green),var(--green2));border-radius:18px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:28px;font-weight:700;margin:0 auto 20px}
.login-card h1{font-size:24px;margin-bottom:8px}
.login-sub{color:var(--text2);margin-bottom:24px;font-size:14px}
.login-card .form-group{text-align:left}

/* Section header */
.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.section-header h2{font-size:20px}

/* Responsive */
@media(max-width:768px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .sidebar-close{display:block}
  .main-content{margin-left:0}
  .menu-btn{display:block}
  .charts-row{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr}
}