:root {
    --bg: #0d1117;
    --panel: #111827;
    --panel-2: #0f172a;
    --text: #e6edf3;
    --muted: #9ca3af;
    --primary: #60a5fa;
    --secondary: #c084fc;
    --success: #34d399;
    --warning: #facc15;
    --danger: #f43f5e;
    --border: #1f2937;
}

* { box-sizing: border-box; }
body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    margin: 0;
    background: radial-gradient(circle at 20% 20%, rgba(96,165,250,0.12), transparent 25%),
        radial-gradient(circle at 80% 10%, rgba(192,132,252,0.12), transparent 20%),
        var(--bg);
    color: var(--text);
}
h1, h2, h3 { margin: 0; font-weight: 700; }
a { color: var(--primary); text-decoration: none; }

.app-shell { display: flex; min-height: 100vh; overflow: hidden; }
.sidebar {
    background: linear-gradient(180deg, var(--panel), var(--panel-2));
    border-right: 1px solid var(--border);
    padding: 18px;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 260px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.35);
    z-index: 12;
    transform: translateX(-110%);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.sidebar.open { transform: translateX(0); }
.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: grid;
    place-items: center;
    color: #0b1221;
    font-weight: 900;
}
.brand-title { font-weight: 800; letter-spacing: 0.04em; text-transform: uppercase; }
.brand-sub { color: var(--muted); font-size: 12px; }

.nav { display: flex; flex-direction: column; gap: 8px; }
.nav button {
    border: 1px solid var(--border);
    padding: 12px 14px;
    border-radius: 12px;
    background: rgba(255,255,255,0.02);
    color: var(--text);
    cursor: pointer;
    font-weight: 700;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 10px;
}
.nav button.active { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #0b1221; box-shadow: 0 12px 30px rgba(96,165,250,0.35); }
.nav .hint { color: var(--muted); font-size: 12px; margin: 12px 0 6px; text-transform: uppercase; letter-spacing: 0.08em; }

.main { flex: 1; padding: 20px 28px 40px; margin-left: 0; transition: filter 0.25s ease; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border-radius: 999px; background: rgba(96,165,250,0.12); color: var(--primary); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; font-size: 12px; }
.hero-title { display: flex; flex-direction: column; gap: 6px; }
.text-center { text-align: center; }
.burger {
    display: inline-flex;
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.08);
    color: var(--text);
    border-radius: 10px;
    padding: 10px 12px;
    cursor: pointer;
    align-items: center;
    gap: 8px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.25);
}

.page { max-width: 1200px; margin: 0 auto; padding: 0 4px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 18px; margin-bottom: 18px; }
.card {
    background: linear-gradient(145deg, var(--panel), var(--panel-2));
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.45);
    position: relative;
    overflow: hidden;
}
.card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(96,165,250,0.05), rgba(192,132,252,0.04));
    pointer-events: none;
}
.card h2 { margin-bottom: 8px; }
.muted { color: var(--muted); font-size: 14px; }
label { display: block; margin: 10px 0 4px; color: var(--muted); font-weight: 600; font-size: 13px; }
input, textarea, select {
    width: 100%;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #0b1324;
    color: var(--text);
    font-size: 14px;
}
textarea { resize: vertical; min-height: 80px; }
button.primary {
    margin-top: 12px;
    padding: 12px 16px;
    border: none;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #0b1221;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 700;
    width: 100%;
    box-shadow: 0 12px 35px rgba(96,165,250,0.25);
}
button.secondary { padding: 8px 12px; border: 1px solid var(--border); background: rgba(255,255,255,0.03); color: var(--text); border-radius: 8px; cursor: pointer; }
table { width: 100%; border-collapse: collapse; color: var(--text); }
th, td { padding: 12px 8px; border-bottom: 1px solid var(--border); text-align: left; font-size: 14px; }
th { color: var(--muted); font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; font-size: 12px; }
.status { font-weight: 800; letter-spacing: 0.04em; }
.status.ONLINE { color: var(--success); }
.status.OFFLINE { color: var(--danger); }
.status.WARNING { color: var(--warning); }
.tag { display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border-radius: 10px; background: rgba(255,255,255,0.04); color: var(--muted); font-weight: 600; font-size: 12px; }
.table-wrap { overflow-x: auto; margin-top: 8px; }
#history { max-height: 260px; overflow-y: auto; display: grid; gap: 12px; margin-top: 12px; }
.history-row { padding: 10px 12px; border-radius: 10px; background: rgba(255,255,255,0.03); border: 1px solid var(--border); }
.history-meta { display: flex; flex-wrap: wrap; gap: 10px; color: var(--muted); font-size: 12px; }
.badge { padding: 6px 10px; border-radius: 999px; font-weight: 700; font-size: 12px; display: inline-block; }
.badge.success { background: rgba(52,211,153,0.12); color: var(--success); }
.badge.warning { background: rgba(250,204,21,0.12); color: var(--warning); }
.badge.danger { background: rgba(244,63,94,0.12); color: var(--danger); }
.detail-header { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
canvas { background: #0b1324; border-radius: 12px; border: 1px solid var(--border); padding: 10px; }
.chip-group { display: flex; gap: 8px; flex-wrap: wrap; }
.card-header { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 12px; }
.ghost-btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 12px; border-radius: 10px; border: 1px dashed var(--border); background: rgba(255,255,255,0.04); color: var(--text); cursor: pointer; font-weight: 700; }
.ghost-btn span { display: inline-flex; align-items: center; }
.ghost-btn span:first-child { width: 24px; height: 24px; justify-content: center; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #0b1221; flex-shrink: 0; }
.muted-btn { background: transparent; border: none; color: var(--muted); cursor: pointer; }
.actions { display: flex; gap: 8px; align-items: center; }
.icon-btn { border: 1px solid var(--border); background: rgba(255,255,255,0.05); color: var(--text); padding: 6px 9px; border-radius: 8px; cursor: pointer; font-weight: 700; }
.icon-btn.danger { border-color: rgba(244,63,94,0.35); color: var(--danger); }
.icon-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.65); display: flex; align-items: center; justify-content: center; padding: 18px; z-index: 50; opacity: 0; pointer-events: none; visibility: hidden; transition: opacity 0.25s ease, visibility 0.25s ease; backdrop-filter: blur(1px); }
.modal {
    width: min(520px, 100%);
    background: linear-gradient(145deg, var(--panel), var(--panel-2));
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
    position: relative;
    box-shadow: 0 25px 60px rgba(0,0,0,0.55);
    transform: translateY(16px) scale(0.98);
    opacity: 0;
    transition: transform 0.25s ease, opacity 0.25s ease;
}
.modal-overlay.active { opacity: 1; pointer-events: auto; visibility: visible; backdrop-filter: blur(3px); }
.modal-overlay.active .modal { transform: translateY(0) scale(1); opacity: 1; }
.modal-close { position: absolute; right: 12px; top: 12px; background: rgba(255,255,255,0.05); border: 1px solid var(--border); border-radius: 10px; width: 34px; height: 34px; display: grid; place-items: center; cursor: pointer; color: var(--muted); }
.confirm-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 16px; }
.danger-btn { background: linear-gradient(135deg, var(--danger), #fb7185); border: none; color: #0b1221; padding: 10px 14px; border-radius: 10px; cursor: pointer; font-weight: 700; }
.secondary-btn { border: 1px solid var(--border); background: rgba(255,255,255,0.03); color: var(--text); padding: 10px 14px; border-radius: 10px; cursor: pointer; font-weight: 600; }
.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin-top: 14px; }
.detail-box { border: 1px solid var(--border); border-radius: 12px; padding: 12px; background: rgba(255,255,255,0.03); }
.detail-label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 4px; display: block; }
.chart-stack { display: flex; flex-direction: column; gap: 14px; margin-top: 14px; }
.chart-block { display: flex; flex-direction: column; gap: 8px; }
.chart-title { font-size: 14px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }
.badge-chip { background: rgba(255,255,255,0.06); border: 1px solid var(--border); padding: 6px 8px; border-radius: 8px; color: var(--muted); }
.sidebar-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.55); z-index: 10; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; }
.sidebar-overlay.active { opacity: 1; pointer-events: auto; }
.hidden { display: none !important; }

.user-chip { display: inline-flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 12px; background: rgba(255,255,255,0.04); border: 1px solid var(--border); }
.user-chip strong { letter-spacing: 0.04em; }
.login-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: min(420px, 100%); background: linear-gradient(145deg, var(--panel), var(--panel-2)); border: 1px solid var(--border); border-radius: 16px; padding: 20px; box-shadow: 0 24px 60px rgba(0,0,0,0.55); }
.login-header { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.login-title { font-size: 20px; font-weight: 800; }
.login-footer { color: var(--muted); font-size: 12px; margin-top: 10px; }
.language-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; align-items: end; }
.language-select { margin-top: 0; }