/* ═════════════════════════════════════════════════════════════
   Cyber-Density DevOps Design System
   Gateway Platform Dashboard
   ═════════════════════════════════════════════════════════════ */

:root {
    --bg: #0b1326;
    --surface: rgba(30, 41, 59, 0.6);
    --surface-low: rgba(30, 41, 59, 0.3);
    --surface-high: rgba(30, 41, 59, 0.8);
    --border: rgba(255, 255, 255, 0.08);
    --border-bright: rgba(255, 255, 255, 0.15);

    --text: #dae2fd;
    --text-muted: #bec7d4;
    --text-dim: #88919d;

    --primary: #98cbff;
    --primary-dim: rgba(152, 203, 255, 0.15);
    --primary-container: #00a3ff;

    --success: #4edea3;
    --success-dim: rgba(78, 222, 163, 0.15);
    --success-container: #00a572;

    --warning: #ffb95f;
    --warning-dim: rgba(255, 185, 95, 0.15);
    --warning-container: #da8b00;

    --error: #ffb4ab;
    --error-dim: rgba(255, 180, 171, 0.15);
    --error-container: #93000a;

    --glow-success: 0 0 8px rgba(78, 222, 163, 0.5);
    --glow-warning: 0 0 8px rgba(255, 185, 95, 0.5);
    --glow-error: 0 0 8px rgba(255, 180, 171, 0.5);
    --glow-primary: 0 0 8px rgba(152, 203, 255, 0.4);

    --font-ui: 'Inter', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Cascadia Code', monospace;
}

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

body {
    font-family: var(--font-ui);
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
    overflow-x: hidden;
    min-height: 100vh;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(152, 203, 255, 0.15); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(152, 203, 255, 0.3); }

/* ── Glass Surface ── */
.glass {
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.glass-card {
    background: var(--surface);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.2s;
}

.glass-card:hover {
    border-color: rgba(152, 203, 255, 0.2);
}

/* ── Typography ── */
.text-display { font-size: 30px; font-weight: 700; letter-spacing: -0.02em; line-height: 38px; }
.text-headline { font-size: 24px; font-weight: 600; letter-spacing: -0.01em; line-height: 32px; }
.text-title { font-size: 16px; font-weight: 600; line-height: 24px; }
.text-body { font-size: 14px; font-weight: 400; line-height: 20px; }
.text-mono-label { font-family: var(--font-mono); font-size: 12px; font-weight: 500; line-height: 16px; text-transform: uppercase; letter-spacing: 0.05em; }
.text-mono-data { font-family: var(--font-mono); font-size: 13px; font-weight: 400; line-height: 20px; }

/* ── Layout ── */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
    width: 240px;
    min-width: 240px;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    background: rgba(23, 31, 51, 0.7);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--border);
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    z-index: 50;
}

.sidebar-brand {
    margin-bottom: 32px;
    padding: 0 8px;
}

.sidebar-brand h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.02em;
}

.sidebar-brand p {
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-dim);
    margin-top: 4px;
}

.nav-items { flex: 1; display: flex; flex-direction: column; gap: 2px; }

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    border-radius: 8px;
    color: var(--text-muted);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    transition: all 0.15s;
}

.nav-item:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.nav-item.active { color: var(--primary); background: var(--primary-dim); border-right: 2px solid var(--primary); }

.nav-icon { font-size: 18px; width: 20px; text-align: center; }

.nav-footer { margin-top: auto; padding-top: 12px; border-top: 1px solid rgba(255,255,255,0.05); }

.main-content { margin-left: 240px; flex: 1; display: flex; flex-direction: column; }

/* ── Top Bar ── */
.topbar {
    height: 56px;
    background: rgba(23, 31, 51, 0.6);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 40;
}

.topbar-left { display: flex; align-items: center; gap: 16px; }
.topbar-right { display: flex; align-items: center; gap: 16px; }

.search-input {
    background: rgba(45, 52, 73, 0.4);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 6px 12px 6px 36px;
    color: var(--text);
    font-size: 14px;
    width: 280px;
    outline: none;
    transition: all 0.2s;
}

.search-input:focus { border-color: var(--primary); box-shadow: 0 0 0 1px rgba(152, 203, 255, 0.2); }
.search-input::placeholder { color: rgba(136, 145, 157, 0.5); }

.topbar-nav { display: flex; gap: 24px; margin-left: 16px; }
.topbar-nav a { color: var(--text-muted); text-decoration: none; font-size: 14px; }
.topbar-nav a:hover, .topbar-nav a.active { color: var(--primary); }

.btn {
    padding: 6px 16px;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    font-size: 13px;
    font-family: var(--font-mono);
    cursor: pointer;
    transition: all 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary { background: var(--primary); color: #003354; }
.btn-primary:hover { background: var(--primary-container); }
.btn-secondary { background: transparent; border: 1px solid var(--success); color: var(--success); }
.btn-secondary:hover { background: var(--success-dim); }
.btn-danger { background: var(--error); color: #690005; }
.btn-danger:hover { opacity: 0.9; }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text-muted); }
.btn-ghost:hover { background: rgba(255,255,255,0.05); color: var(--text); }
.btn-sm { padding: 3px 8px; font-size: 11px; }
.btn-icon { padding: 6px; border-radius: 8px; background: transparent; border: none; color: var(--text-muted); cursor: pointer; transition: all 0.15s; }
.btn-icon:hover { color: var(--text); background: rgba(255,255,255,0.05); }

/* ── Page ── */
.page-content { padding: 24px; flex: 1; overflow-y: auto; }

.page-header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 24px; }
.page-header h2 { font-size: 24px; font-weight: 600; color: var(--text); }
.page-header p { color: var(--text-dim); font-family: var(--font-mono); font-size: 12px; margin-top: 4px; }

/* ── Stats Grid ── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--surface);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.stat-card.border-success { border-left: 3px solid var(--success); }
.stat-card.border-warning { border-left: 3px solid var(--warning); }
.stat-card.border-error { border-left: 3px solid var(--error); }
.stat-card.border-primary { border-left: 3px solid var(--primary); }

.stat-label {
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-dim);
}

.stat-value { font-size: 30px; font-weight: 700; }
.stat-value.success { color: var(--success); }
.stat-value.warning { color: var(--warning); }
.stat-value.error { color: var(--error); }
.stat-value.primary { color: var(--primary); }

/* ── Status Badges ── */
.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.status-dot.success { background: var(--success); box-shadow: var(--glow-success); }
.status-dot.warning { background: var(--warning); box-shadow: var(--glow-warning); }
.status-dot.error { background: var(--error); box-shadow: var(--glow-error); }
.status-dot.muted { background: var(--text-dim); }

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.status-badge.success { color: var(--success); }
.status-badge.warning { color: var(--warning); }
.status-badge.error { color: var(--error); }

.badge-tag {
    font-size: 10px;
    font-family: var(--font-mono);
    padding: 2px 8px;
    border-radius: 4px;
    background: var(--primary-dim);
    color: var(--primary);
    border: 1px solid rgba(152, 203, 255, 0.2);
}

/* ── Data Table ── */
.table-container {
    background: var(--surface);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead tr {
    background: rgba(255,255,255,0.03);
    border-bottom: 1px solid var(--border);
}

.data-table th {
    padding: 10px 16px;
    text-align: left;
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-dim);
}

.data-table td {
    padding: 8px 16px;
    font-size: 14px;
    border-bottom: 1px solid rgba(255,255,255,0.04);
}

.data-table tbody tr { transition: background 0.15s; }
.data-table tbody tr:hover { background: rgba(152, 203, 255, 0.04); }

.data-table .mono { font-family: var(--font-mono); font-size: 13px; }

/* ── Forms ── */
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-label { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-dim); }
.form-input, .form-select {
    background: rgba(45, 52, 73, 0.4);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 12px;
    color: var(--text);
    font-size: 14px;
    outline: none;
    transition: all 0.2s;
}
.form-input:focus, .form-select:focus { border-color: var(--primary); box-shadow: 0 0 0 1px rgba(152, 203, 255, 0.15); }
.form-select { cursor: pointer; }
.form-select option { background: #1e293b; color: var(--text); }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ── Modal ── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal {
    background: var(--surface-high);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-bright);
    border-radius: 16px;
    padding: 32px;
    width: 640px;
    max-width: 90vw;
    max-height: 85vh;
    overflow-y: auto;
}

.modal h3 { font-size: 20px; font-weight: 600; margin-bottom: 24px; }

.modal-actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 24px; }

/* ── Alerts ── */
.alert-item {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    transition: background 0.15s;
}

.alert-item:hover { background: rgba(255,255,255,0.03); }
.alert-item .time { font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); }

/* ── Resource Bars ── */
.resource-bar {
    height: 6px;
    background: rgba(45, 52, 73, 0.5);
    border-radius: 3px;
    overflow: hidden;
}
.resource-bar-fill { height: 100%; border-radius: 3px; transition: width 1s; }
.resource-bar-fill.primary { background: var(--primary); box-shadow: var(--glow-primary); }
.resource-bar-fill.success { background: var(--success); box-shadow: var(--glow-success); }

.bar-chart { display: flex; gap: 2px; align-items: flex-end; height: 48px; }
.bar-chart .bar { width: 6px; border-radius: 2px 2px 0 0; }

/* ── Pulse Animation ── */
@keyframes pulse-status { 0%, 100% { opacity: 1; } 50% { opacity: 0.6; } }
.pulse-once { animation: pulse-status 0.8s ease-in-out 2; }

/* ── FAB ── */
.fab {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--primary);
    color: #003354;
    border: none;
    cursor: pointer;
    font-size: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(152, 203, 255, 0.3);
    transition: all 0.2s;
    z-index: 60;
}
.fab:hover { transform: scale(1.05); box-shadow: 0 6px 24px rgba(152, 203, 255, 0.4); }
.fab:active { transform: scale(0.95); }

/* ── Topology ── */
.topology-canvas { background: rgba(45, 52, 73, 0.2); border-radius: 12px; min-height: 400px; position: relative; }
.topology-node {
    position: absolute;
    background: var(--surface);
    border: 1px solid var(--border-bright);
    border-radius: 12px;
    padding: 12px 16px;
    cursor: pointer;
    transition: all 0.2s;
}
.topology-node:hover { border-color: var(--primary); background: var(--surface-high); }
.topology-node .node-header { font-weight: 600; font-size: 14px; }
.topology-node .node-meta { font-family: var(--font-mono); font-size: 11px; color: var(--text-dim); }

/* ── Log Viewer ── */
.log-viewer {
    background: #000;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 12px;
    max-height: 500px;
    overflow-y: auto;
    color: #d4d4d4;
}

.log-line { padding: 2px 0; border-bottom: 1px solid rgba(255,255,255,0.02); white-space: nowrap; }
.log-line.error { color: var(--error); }
.log-line.warn { color: var(--warning); }
.log-line.info { color: var(--primary); }
.log-line.success { color: var(--success); }
.log-timestamp { color: var(--text-dim); margin-right: 12px; }

/* ── Empty State ── */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 64px;
    color: var(--text-dim);
    text-align: center;
}

.empty-state .icon { font-size: 48px; margin-bottom: 16px; opacity: 0.3; }
.empty-state h3 { font-size: 18px; color: var(--text-muted); margin-bottom: 8px; }
.empty-state p { font-size: 14px; }

/* ── Tabs ── */
.tabs {
    display: flex;
    background: rgba(45, 52, 73, 0.3);
    border-radius: 8px;
    padding: 4px;
    gap: 4px;
    border: 1px solid var(--border);
}

.tab {
    padding: 6px 16px;
    border-radius: 6px;
    border: none;
    background: transparent;
    color: var(--text-dim);
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    transition: all 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.tab:hover { color: var(--text); }
.tab.active { background: var(--primary-dim); color: var(--primary); }

/* ── Loading ── */
.loading { display: flex; align-items: center; justify-content: center; padding: 48px; color: var(--text-dim); }
.spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Flex Helpers ── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.text-center { text-align: center; }
.w-full { width: 100%; }
.w-50 { width: 50%; }
.flex-1 { flex: 1; }

/* ── Responsive ── */
@media (max-width: 1024px) {
    .sidebar { width: 200px; min-width: 200px; }
    .main-content { margin-left: 200px; }
    .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .sidebar { display: none; }
    .main-content { margin-left: 0; }
    .stats-grid { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
    .page-header { flex-direction: column; align-items: flex-start; gap: 12px; }
}