/* ==============================================================================
   PRTG Enterprise High-Availability Monitoring System — Design System & Theme
   Target: mon.vrege.com (High Performance, Clean Aesthetics, Micro-animations)
   ============================================================================== */

:root {
    --prtg-blue: #153960;
    --prtg-blue-dark: #0c233c;
    --prtg-blue-light: #25588f;
    --prtg-blue-accent: #0284c7;
    --prtg-green: #10b981;
    --prtg-green-dark: #059669;
    --prtg-green-glow: rgba(16, 185, 129, 0.25);
    --prtg-yellow: #f59e0b;
    --prtg-orange: #ea580c;
    --prtg-red: #ef4444;
    --prtg-red-glow: rgba(239, 68, 68, 0.25);
    --prtg-bg: #eef2f6;
    --prtg-panel: #ffffff;
    --prtg-panel-alt: #f8fafc;
    --prtg-border: #cbd5e1;
    --prtg-border-light: #e2e8f0;
    --prtg-text: #1e293b;
    --prtg-text-muted: #64748b;
    --font-main: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
    --font-mono: 'Roboto Mono', "SFMono-Regular", Consolas, monospace;
    --radius-sm: 3px;
    --radius-md: 6px;
    --radius-lg: 10px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background-color: var(--prtg-bg);
    color: var(--prtg-text);
    font-family: var(--font-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-size: 13px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* MICRO ANIMATIONS */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseGlow {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

@keyframes pulseRed {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(239, 68, 68, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

.fade-in { animation: fadeIn 0.25s ease-out forwards; }

/* 1. AUTH OVERLAY */
#auth-overlay {
    position: fixed; inset: 0; background: radial-gradient(circle at 50% 50%, #153960 0%, #081626 100%);
    z-index: 99999; display: flex; align-items: center; justify-content: center; padding: 1.5rem;
}
.login-card {
    background: #ffffff; border-radius: var(--radius-md); width: 100%; max-width: 440px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5); overflow: hidden; border-top: 5px solid var(--prtg-blue-accent);
    animation: fadeIn 0.35s ease-out forwards;
}
.login-header {
    background: var(--prtg-panel-alt); padding: 1.75rem 2rem; text-align: center; border-bottom: 1px solid var(--prtg-border-light);
}
.login-header h2 { font-size: 1.45rem; color: var(--prtg-blue); font-weight: 700; letter-spacing: -0.02em; }
.login-header p { color: var(--prtg-text-muted); font-size: 0.85rem; margin-top: 0.35rem; }
.login-body { padding: 2rem; }
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: 0.8rem; font-weight: 700; margin-bottom: 0.4rem; color: #334155; }
.form-input {
    width: 100%; padding: 0.7rem 0.85rem; border: 1px solid var(--prtg-border);
    border-radius: var(--radius-sm); font-size: 0.9rem; font-family: inherit; transition: border-color 0.15s, box-shadow 0.15s;
}
.form-input:focus { outline: none; border-color: var(--prtg-blue-accent); box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15); }

.btn-prtg {
    background: var(--prtg-blue); color: #fff; border: none; padding: 0.75rem 1.25rem;
    border-radius: var(--radius-sm); font-weight: 700; cursor: pointer; width: 100%; font-size: 0.9rem;
    transition: background-color 0.15s, transform 0.05s; display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
}
.btn-prtg:hover { background: var(--prtg-blue-dark); }
.btn-prtg:active { transform: scale(0.99); }
.btn-prtg.primary { background: var(--prtg-blue-accent); }
.btn-prtg.primary:hover { background: #0369a1; }

/* 2. TOPBAR */
#app-layout { display: none; flex-direction: column; min-height: 100vh; }
header.prtg-topbar {
    background: var(--prtg-blue); color: #fff; padding: 0.5rem 1.75rem;
    display: flex; justify-content: space-between; align-items: center; box-shadow: var(--shadow-md); z-index: 100;
}
.brand-section { display: flex; align-items: center; gap: 1rem; }
.brand-title { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.01em; display: flex; align-items: center; gap: 0.5rem; }
.brand-tag { background: rgba(255,255,255,0.15); padding: 0.2rem 0.6rem; border-radius: var(--radius-sm); font-size: 0.75rem; font-family: var(--font-mono); }
.topbar-stats { display: flex; align-items: center; gap: 1rem; font-size: 0.825rem; }
.connection-badge {
    display: flex; align-items: center; gap: 0.4rem; padding: 0.25rem 0.6rem;
    background: rgba(0,0,0,0.25); border-radius: var(--radius-sm); font-family: var(--font-mono); font-size: 0.75rem;
}
.tenant-select {
    padding: 0.4rem 0.75rem; border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--radius-sm); font-weight: 600; color: var(--prtg-blue); background: #fff;
}
.btn-topbar-action {
    background: rgba(255,255,255,0.15); color: #fff; border: 1px solid rgba(255,255,255,0.25);
    padding: 0.4rem 0.85rem; border-radius: var(--radius-sm); cursor: pointer; font-size: 0.8rem; font-weight: 600;
    transition: background 0.15s;
}
.btn-topbar-action:hover { background: rgba(255,255,255,0.28); }

/* 3. NAVBAR */
nav.prtg-navbar {
    background: #fff; border-bottom: 1px solid var(--prtg-border);
    padding: 0 1.75rem; display: flex; justify-content: space-between; align-items: center;
}
.nav-links { display: flex; gap: 0.5rem; }
.nav-link {
    padding: 0.9rem 1.15rem; color: var(--prtg-text); text-decoration: none;
    font-weight: 600; font-size: 0.85rem; border-bottom: 3px solid transparent; cursor: pointer;
    transition: all 0.15s; display: flex; align-items: center; gap: 0.4rem;
}
.nav-link:hover { color: var(--prtg-blue); background: var(--prtg-panel-alt); }
.nav-link.active { color: var(--prtg-blue); border-bottom-color: var(--prtg-blue); background: var(--prtg-panel-alt); }

/* 4. WORKSPACE */
.prtg-workspace {
    display: grid; grid-template-columns: 370px 1fr;
    flex: 1; height: calc(100vh - 90px); overflow: hidden;
}

/* DEVICE TREE PANEL */
aside.device-tree-panel {
    background: #fff; border-right: 1px solid var(--prtg-border);
    overflow-y: auto; display: flex; flex-direction: column;
}
.tree-header {
    padding: 0.85rem 1.15rem; background: var(--prtg-panel-alt); border-bottom: 1px solid var(--prtg-border);
    font-weight: 700; display: flex; justify-content: space-between; align-items: center;
}
.tree-body { padding: 0.5rem 0; flex: 1; }
.tree-group-title {
    padding: 0.55rem 1.15rem; font-weight: 700; font-size: 0.75rem;
    text-transform: uppercase; color: var(--prtg-text-muted); letter-spacing: 0.04em;
}
.tree-item-row {
    padding: 0.65rem 1.15rem; cursor: pointer; display: flex; align-items: center;
    justify-content: space-between; border-left: 3px solid transparent; transition: background 0.1s;
}
.tree-item-row:hover { background: #f1f5f9; }
.tree-item-row.selected { background: #e0f2fe; border-left-color: var(--prtg-blue-accent); font-weight: 700; color: var(--prtg-blue); }
.tree-sub-vms {
    padding-left: 1.8rem; background: #f8fafc; border-top: 1px solid #f1f5f9; border-bottom: 1px solid #f1f5f9;
}

.badge-status-dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.dot-green { background: var(--prtg-green); animation: pulseGlow 2.5s infinite; }
.dot-yellow { background: var(--prtg-yellow); }
.dot-red { background: var(--prtg-red); animation: pulseRed 1.8s infinite; }

/* SENSOR & CONTENT WORKSPACE */
main.sensor-workspace {
    padding: 1.5rem; overflow-y: auto; display: flex; flex-direction: column; gap: 1.25rem;
}
.device-overview-header {
    background: #fff; padding: 1.25rem 1.5rem; border-radius: var(--radius-sm);
    border: 1px solid var(--prtg-border); display: flex; justify-content: space-between; align-items: center; box-shadow: var(--shadow-sm);
}
.device-title-wrap h1 { font-size: 1.4rem; color: var(--prtg-blue); font-weight: 700; }
.device-meta-wrap {
    display: flex; gap: 1.75rem; margin-top: 0.4rem; color: var(--prtg-text-muted);
    font-size: 0.825rem; font-family: var(--font-mono);
}

/* SENSOR TILES */
.sensor-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 1rem;
}
.sensor-tile {
    background: #fff; border: 1px solid var(--prtg-border); border-radius: var(--radius-sm);
    padding: 1.2rem; display: flex; flex-direction: column; cursor: pointer;
    box-shadow: var(--shadow-sm); transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}
.sensor-tile:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: var(--prtg-blue-accent); }
.sensor-tile.status-ok { border-top: 4px solid var(--prtg-green); }
.sensor-tile.status-warning { border-top: 4px solid var(--prtg-yellow); }
.sensor-tile.status-down { border-top: 4px solid var(--prtg-red); }

.sensor-title {
    font-weight: 700; font-size: 0.85rem; color: var(--prtg-text);
    margin-bottom: 0.4rem; display: flex; justify-content: space-between; align-items: center;
}
.sensor-value-big {
    font-size: 1.85rem; font-weight: 700; color: var(--prtg-blue);
    font-family: var(--font-mono); margin: 0.25rem 0; letter-spacing: -0.02em;
}
.sensor-channels {
    margin-top: 0.5rem; font-size: 0.775rem; color: var(--prtg-text-muted);
    border-top: 1px solid var(--prtg-border-light); padding-top: 0.5rem; display: flex; flex-direction: column; gap: 0.25rem;
}

/* TABLE WRAP */
.channels-table-wrap {
    background: #fff; border: 1px solid var(--prtg-border); border-radius: var(--radius-sm);
    padding: 1.25rem; overflow-x: auto; box-shadow: var(--shadow-sm);
}
table.prtg-table {
    width: 100%; border-collapse: collapse; font-size: 0.825rem; font-family: var(--font-mono);
}
table.prtg-table th {
    text-align: left; padding: 0.75rem 0.85rem; background: var(--prtg-panel-alt);
    border-bottom: 2px solid var(--prtg-border); color: var(--prtg-blue); font-weight: 700;
}
table.prtg-table td {
    padding: 0.7rem 0.85rem; border-bottom: 1px solid var(--prtg-border-light); vertical-align: middle;
}
table.prtg-table tr:hover td { background: #f8fafc; }

/* PERIOD TABS */
.period-tabs-bar {
    display: flex; gap: 0.4rem; background: #fff; padding: 0.55rem 1rem;
    border-radius: var(--radius-sm); border: 1px solid var(--prtg-border); align-items: center; flex-wrap: wrap; box-shadow: var(--shadow-sm);
}
.period-tab-btn {
    background: #f1f5f9; border: 1px solid var(--prtg-border); padding: 0.45rem 0.95rem;
    border-radius: var(--radius-sm); font-weight: 600; font-size: 0.8rem; cursor: pointer; transition: all 0.15s;
}
.period-tab-btn:hover { background: #e2e8f0; }
.period-tab-btn.active { background: var(--prtg-blue); color: #fff; border-color: var(--prtg-blue); box-shadow: 0 1px 3px rgba(0,0,0,0.15); }

.chart-box {
    background: #fff; border: 1px solid var(--prtg-border); border-radius: var(--radius-sm);
    padding: 1.25rem; height: 280px; position: relative; box-shadow: var(--shadow-sm);
}
canvas.chart-canvas { width: 100%; height: 240px; display: block; }

/* NETFLOW FILTER CARD */
.filter-banner {
    background: #fff; border: 1px solid var(--prtg-border); border-radius: var(--radius-sm);
    padding: 1.1rem 1.4rem; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; box-shadow: var(--shadow-sm);
}
.filter-stats-badge {
    background: #e0f2fe; border: 1px solid #bae6fd; padding: 0.55rem 1.15rem; border-radius: var(--radius-sm);
    font-family: var(--font-mono); font-size: 0.85rem; color: var(--prtg-blue); font-weight: 700;
}

/* DEVICE CHIPS FOR NETFLOW */
.device-chips-bar {
    display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 0.5rem; align-items: center;
}
.device-chip {
    background: #fff; border: 1px solid var(--prtg-border); padding: 0.45rem 0.95rem;
    border-radius: 20px; font-weight: 600; font-size: 0.8rem; cursor: pointer; display: flex; align-items: center; gap: 0.45rem;
    transition: all 0.15s; box-shadow: var(--shadow-sm);
}
.device-chip:hover { background: #f8fafc; border-color: var(--prtg-blue-accent); transform: translateY(-1px); }
.device-chip.active { background: var(--prtg-blue); color: #fff; border-color: var(--prtg-blue); }

.kpi-badge-group {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 0.75rem; margin-bottom: 1rem;
}
.kpi-badge {
    background: var(--prtg-panel-alt); border: 1px solid var(--prtg-border); padding: 0.75rem; border-radius: var(--radius-sm);
}
.kpi-badge .kpi-label { font-size: 0.7rem; color: var(--prtg-text-muted); font-weight: 700; text-transform: uppercase; }
.kpi-badge .kpi-val { font-size: 1.25rem; font-weight: 700; color: var(--prtg-blue); font-family: var(--font-mono); margin-top: 0.2rem; }

/* MODALS */
.prtg-modal {
    position: fixed; inset: 0; background: rgba(15, 23, 42, 0.6); backdrop-filter: blur(4px);
    display: none; align-items: center; justify-content: center; z-index: 10000; padding: 1.5rem;
}
.modal-inner {
    background: #fff; border-radius: var(--radius-md); width: 100%; max-width: 650px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3); border-top: 4px solid var(--prtg-blue);
    animation: fadeIn 0.2s ease-out forwards;
}
.modal-inner.large { max-width: 920px; }
.modal-header {
    padding: 1.15rem 1.5rem; background: var(--prtg-panel-alt); border-bottom: 1px solid var(--prtg-border);
    display: flex; justify-content: space-between; align-items: center; font-weight: 700; color: var(--prtg-blue);
}
.modal-body { padding: 1.75rem; max-height: 80vh; overflow-y: auto; }

.action-icon-btn {
    background: none; border: 1px solid var(--prtg-border); padding: 0.35rem 0.75rem; border-radius: var(--radius-sm);
    cursor: pointer; font-size: 0.8rem; margin-left: 0.35rem; font-weight: 600; transition: all 0.15s;
}
.action-icon-btn:hover { background: #e2e8f0; }
.action-icon-btn.primary { background: var(--prtg-blue); color: #fff; border-color: var(--prtg-blue); }
.action-icon-btn.primary:hover { background: var(--prtg-blue-dark); }
.action-icon-btn.delete { color: var(--prtg-red); border-color: #fca5a5; }
.action-icon-btn.delete:hover { background: #fee2e2; }