* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; background-color: #0f172a; color: #f8fafc; min-height: 100vh; display: flex; flex-direction: column; }
header { background-color: #1e293b; padding: 0 20px; height: 60px; display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid #334155; position: sticky; top: 0; z-index: 100; width: 100%; }
.header-left { display: flex; align-items: center; gap: 30px; }
.logo { font-weight: bold; font-size: 1.2rem; color: #38bdf8; display: flex; align-items: center; gap: 8px; }
.nav-menu { display: flex; list-style: none; gap: 20px; align-items: center; }
.nav-menu > li { position: relative; height: 60px; display: flex; align-items: center; }
.nav-menu a { color: #94a3b8; text-decoration: none; font-size: 0.95rem; transition: color 0.2s; display: block; }
.nav-menu a:hover { color: #f8fafc; }
.dropdown { position: absolute; top: 60px; left: 0; background-color: #1e293b; min-width: 220px; border: 1px solid #334155; border-radius: 0 0 8px 8px; list-style: none; display: none; box-shadow: 0 10px 15px -3px rgba(0,0,0,0.3); padding: 5px 0; }
.dropdown li { width: 100%; }
.dropdown a { padding: 10px 15px; color: #94a3b8; font-size: 0.9rem; width: 100%; }
.dropdown a:hover { background-color: #334155; color: #38bdf8; }
.dropdown-trigger:hover .dropdown { display: block; }
.header-right { display: flex; align-items: center; gap: 15px; }
.header-icons { display: flex; gap: 10px; align-items: center; }
.icon-btn { color: #94a3b8; text-decoration: none; font-size: 1.3rem; padding: 8px; border-radius: 6px; transition: background-color 0.2s, color 0.2s; display: flex; align-items: center; justify-content: center; }
.icon-btn:hover { background-color: #334155; color: #38bdf8; }
.hamburger { display: none; flex-direction: column; justify-content: space-between; width: 24px; height: 18px; background: transparent; border: none; cursor: pointer; padding: 0; }
.hamburger span { width: 100%; height: 2px; background-color: #94a3b8; border-radius: 2px; transition: all 0.2s; }
main { display: flex; flex: 1; padding: 20px; gap: 20px; width: 100%; align-items: flex-start; }
.column { flex: 1; display: flex; flex-direction: column; gap: 20px; }
.card { background-color: #1e293b; border: 1px solid #334155; border-radius: 12px; padding: 24px; width: 100%; }
.card-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 20px; color: #38bdf8; display: flex; align-items: center; gap: 10px; border-bottom: 1px solid #334155; padding-bottom: 10px; }
.status-grid { display: flex; flex-direction: column; gap: 15px; }
.status-item { display: flex; justify-content: space-between; align-items: center; padding: 10px; background-color: #0f172a; border-radius: 8px; border: 1px solid #1e293b; }
.status-label { color: #94a3b8; font-size: 0.9rem; }
.status-value { font-weight: 500; font-size: 0.95rem; display: flex; align-items: center; gap: 8px; }
.badge { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.badge-online { background-color: #10b981; box-shadow: 0 0 8px #10b981; }
.placeholder-zone { display: flex; flex-direction: column; align-items: center; justify-content: center; border: 2px dashed #334155; border-radius: 8px; padding: 15px; color: #64748b; text-align: center; }
@media (max-width: 768px) {
    main { flex-direction: column; }
    .hamburger { display: flex; }
    .header-icons { display: none; }
    .nav-menu { display: none; position: absolute; top: 60px; left: 0; width: 100%; background-color: #1e293b; flex-direction: column; align-items: flex-start; padding: 20px; border-bottom: 1px solid #334155; gap: 15px; }
    .nav-menu.active { display: flex; }
    .nav-menu > li { height: auto; width: 100%; flex-direction: column; align-items: flex-start; }
    .dropdown { position: static; box-shadow: none; border: none; padding-left: 15px; display: block; background: transparent; }
}