/* ============================================
   Robin Mesh Panel — Dark Monitoring Dashboard
   ============================================ */

:root {
    --bg-base: #07080c;
    --bg-surface: #0e1017;
    --bg-card: #131520;
    --bg-card-hover: #181b2a;
    --bg-sidebar: #0a0b10;
    --border: #1c1f30;
    --border-active: #2a2e45;

    --text-primary: #dce1eb;
    --text-secondary: #6b7394;
    --text-muted: #454b66;

    --green: #22c55e;
    --green-dim: #166534;
    --red: #ef4444;
    --red-dim: #7f1d1d;
    --blue: #3b82f6;
    --blue-dim: #1e3a5f;
    --amber: #f59e0b;
    --amber-dim: #78350f;
    --purple: #a78bfa;
    --purple-dim: #4c1d95;
    --cyan: #22d3ee;
    --cyan-dim: #164e63;

    --font-ui: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-mono: 'Cascadia Code', 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    --sidebar-width: 220px;
    --radius: 6px;
}

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

html, body {
    height: 100%;
    background: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* === Shell Layout === */

.shell {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* === Sidebar === */

.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 0;
}

.sidebar-brand {
    padding: 20px 18px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-icon {
    font-size: 20px;
    color: var(--blue);
}

.brand-text {
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--text-primary);
}

.sidebar-nav {
    flex: 1;
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: var(--radius);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.15s;
}

.nav-item:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--bg-card);
    color: var(--blue);
    border: 1px solid var(--border);
}

.nav-icon {
    font-size: 11px;
    width: 16px;
    text-align: center;
}

.sidebar-footer {
    padding: 14px 18px;
    border-top: 1px solid var(--border);
}

.mesh-status {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* === Content === */

.content {
    flex: 1;
    overflow-y: auto;
    padding: 28px 32px;
    background: var(--bg-base);
}

/* === Page Header === */

.page-header {
    margin-bottom: 24px;
    display: flex;
    align-items: baseline;
    gap: 14px;
}

.page-header h1 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.header-sub {
    font-size: 13px;
    color: var(--text-muted);
}

.section-header {
    margin: 24px 0 12px;
}

.section-header h2 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* === Cards === */

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
    margin-bottom: 12px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 8px;
}

.card-stat {
    padding: 18px 20px;
}

.stat-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    font-family: var(--font-mono);
    line-height: 1.1;
    margin-bottom: 4px;
}

.stat-detail {
    font-size: 12px;
    color: var(--text-muted);
}

/* === Colors === */

.text-green { color: var(--green); }
.text-red { color: var(--red); }
.text-blue { color: var(--blue); }
.text-amber { color: var(--amber); }
.text-purple { color: var(--purple); }
.text-cyan { color: var(--cyan); }

/* === Dots === */

.dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.dot-green {
    background: var(--green);
    box-shadow: 0 0 6px var(--green);
}

.dot-red {
    background: var(--red);
    box-shadow: 0 0 6px var(--red);
}

/* === Data Table === */

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

.data-table th {
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
}

.data-table td {
    padding: 10px 12px;
    font-size: 13px;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
}

.data-table tbody tr:hover {
    background: var(--bg-card-hover);
}

.data-table .row-offline td {
    color: var(--text-muted);
}

.mono {
    font-family: var(--font-mono);
    font-size: 12px;
}

/* === Activity Log === */

.activity-log {
    display: flex;
    flex-direction: column;
    gap: 1px;
    max-height: 400px;
    overflow-y: auto;
}

.activity-log-full {
    max-height: 70vh;
}

.activity-entry {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 4px;
    font-size: 13px;
    border-bottom: 1px solid var(--border);
}

.activity-entry:last-child {
    border-bottom: none;
}

.activity-badge {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
    padding: 2px 8px;
    border-radius: 3px;
    white-space: nowrap;
    min-width: 110px;
    text-align: center;
}

.badge-agent-online {
    background: var(--green-dim);
    color: var(--green);
}

.badge-agent-offline {
    background: var(--red-dim);
    color: var(--red);
}

.badge-msg {
    background: var(--blue-dim);
    color: var(--blue);
}

.badge-broadcast {
    background: var(--purple-dim);
    color: var(--purple);
}

.badge-intent-publish {
    background: var(--amber-dim);
    color: var(--amber);
}

.badge-intent-withdraw {
    background: var(--red-dim);
    color: var(--red);
}

.badge-catalog-publish {
    background: var(--cyan-dim);
    color: var(--cyan);
}

.activity-from {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--blue);
    white-space: nowrap;
}

.activity-arrow {
    color: var(--text-muted);
    font-size: 12px;
}

.activity-to {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--green);
    white-space: nowrap;
}

.activity-summary {
    flex: 1;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 12px;
}

.activity-time,
.activity-time-col {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
    white-space: nowrap;
}

.activity-time-col {
    min-width: 65px;
}

/* === Intent Cards === */

.intent-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 12px;
    margin-bottom: 12px;
}

.intent-card {
    border-left: 3px solid transparent;
}

.intent-seeking {
    border-left-color: var(--amber);
}

.intent-offering {
    border-left-color: var(--green);
}

.intent-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.intent-action {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
    padding: 2px 8px;
    border-radius: 3px;
}

.badge-seeking {
    background: var(--amber-dim);
    color: var(--amber);
}

.badge-offering {
    background: var(--green-dim);
    color: var(--green);
}

.intent-category {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.intent-desc {
    font-size: 13px;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.5;
}

.intent-meta {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.intent-data {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.data-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 2px 8px;
    background: var(--bg-base);
    border: 1px solid var(--border);
    border-radius: 3px;
    color: var(--text-secondary);
}

/* === Catalog Cards === */

.catalog-card {
    border-left: 3px solid var(--cyan);
}

.catalog-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.catalog-name {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.catalog-transport {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 3px;
}

.badge-http {
    background: var(--blue-dim);
    color: var(--blue);
}

.badge-stdio {
    background: var(--purple-dim);
    color: var(--purple);
}

.catalog-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    line-height: 1.5;
}

.catalog-meta {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.catalog-tools {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 8px;
}

.catalog-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.tag {
    font-size: 11px;
    padding: 1px 6px;
    background: var(--bg-base);
    border-radius: 3px;
    color: var(--text-muted);
}

/* === Empty State === */

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 14px;
}

.not-found {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-muted);
    font-size: 18px;
}

/* === Scrollbar === */

::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-active);
}

/* === Responsive === */

@media (max-width: 768px) {
    .sidebar {
        width: 56px;
        min-width: 56px;
    }

    .brand-text,
    .nav-item span:not(.nav-icon),
    .sidebar-footer {
        display: none;
    }

    .sidebar-brand {
        justify-content: center;
        padding: 16px 8px;
    }

    .nav-item {
        justify-content: center;
        padding: 10px;
    }

    .content {
        padding: 20px 16px;
    }

    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .intent-grid {
        grid-template-columns: 1fr;
    }
}