:root {
    --app-bg: #f5f7fb;
    --app-text: #18202f;
    --app-muted: #667085;
    --app-border: #d8dee9;
    --app-surface: #ffffff;
    --app-accent: #0f6cbd;
    --green: #1f8a5b;
    --orange: #d9822b;
    --red: #c93535;
    --blue: #0f6cbd;
    --indigo: #4f46e5;
    --purple: #7c3aed;
    --teal: #0f766e;
}

body {
    background: var(--app-bg);
    color: var(--app-text);
    font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

.app-navbar {
    border-bottom: 1px solid var(--app-border);
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(10px);
}

.app-navbar .navbar-brand {
    letter-spacing: 0;
}

.app-navbar .nav-link {
    border-radius: 6px;
    color: #344054;
    font-weight: 500;
}

.app-navbar .nav-link i {
    margin-right: .35rem;
    width: 1.1rem;
}

.app-navbar .nav-link:hover,
.app-navbar .nav-link.active {
    background: #e8f1fb;
    color: var(--app-accent);
}

.nav-icon-blue { color: var(--blue); }
.nav-icon-red { color: var(--red); }
.nav-icon-green { color: var(--green); }
.nav-icon-indigo { color: var(--indigo); }
.nav-icon-purple { color: var(--purple); }
.nav-icon-orange { color: var(--orange); }
.nav-icon-teal { color: var(--teal); }

.app-shell {
    padding: 1.25rem;
}

.page-heading {
    max-width: 980px;
    padding: 1.5rem 0 1rem;
    text-align: center;
}

.page-heading h1 {
    font-size: clamp(1.65rem, 3vw, 2.5rem);
    font-weight: 700;
    letter-spacing: 0;
    margin-bottom: .5rem;
}

.page-heading p {
    color: var(--app-muted);
    margin: 0;
}

.panel {
    background: var(--app-surface);
    border: 1px solid var(--app-border);
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(16, 24, 40, .06);
}

.filter-panel {
    max-width: 880px;
    margin: 0 auto 1.5rem;
    padding: 1rem;
}

.table-panel {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.table-container {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    min-height: 0 !important;
    margin: 1.5rem auto 0 !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch;
    background: var(--app-surface);
    border: 1px solid var(--app-border);
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(16, 24, 40, .06);
}

.table {
    margin-bottom: 0;
    min-width: 840px;
    vertical-align: middle;
}

.table th {
    color: #344054;
    font-size: .88rem;
    white-space: nowrap;
}

.table td {
    white-space: nowrap;
}

.table a[target="_blank"]::after {
    content: " ↗";
    font-size: .8em;
}

.action-button {
    max-width: 100%;
    white-space: normal;
}

.confirm-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1rem;
}

.confirm-panel {
    max-width: 720px;
    width: 100%;
    padding: 1.25rem;
}

.confirm-actions {
    display: grid;
    gap: .75rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.dashboard-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    margin-bottom: 1rem;
}

.dashboard-grid-seven {
    grid-template-columns: repeat(7, minmax(0, 1fr));
}

.metric-strip {
    display: grid;
    gap: .85rem;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    margin-bottom: 1rem;
}

.overview-panel {
    align-items: center;
    display: flex;
    justify-content: space-between;
    gap: 1.25rem;
    margin-bottom: 1rem;
    padding: 1.1rem 1.25rem;
}

.overview-panel h2 {
    font-size: clamp(1.75rem, 3vw, 2.4rem);
    font-weight: 760;
    line-height: 1;
    margin: .2rem 0 .35rem;
}

.overview-panel p {
    color: var(--app-muted);
    margin: 0;
}

.overview-meta {
    background: #f8fafc;
    border: 1px solid var(--app-border);
    border-radius: 8px;
    min-width: 220px;
    padding: .8rem .9rem;
}

.overview-meta span,
.eyebrow {
    color: var(--app-muted);
    display: block;
    font-size: .82rem;
    font-weight: 650;
    text-transform: uppercase;
}

.overview-meta strong {
    display: block;
    margin-top: .25rem;
}

.metric-card {
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid var(--app-border);
    border-radius: 8px;
    box-shadow: 0 10px 26px rgba(16, 24, 40, .055);
    min-height: 126px;
    padding: .95rem;
    position: relative;
    overflow: hidden;
}

.metric-card::after {
    content: "";
    position: absolute;
    inset: auto 0 0 0;
    height: 3px;
    background: #cbd5e1;
}

.metric-card span,
.metric-card small {
    color: var(--app-muted);
    display: block;
    font-size: .88rem;
}

.metric-card strong {
    display: block;
    font-size: clamp(1.75rem, 3vw, 2.45rem);
    font-weight: 750;
    line-height: 1.1;
    margin: .75rem 0 .4rem;
}

.metric-good::after,
.metric-good-soft::after {
    background: var(--green);
}

.metric-spam::after {
    background: var(--orange);
}

.metric-warn::after {
    background: var(--orange);
}

.metric-blocked::after {
    background: var(--orange);
}

.metric-danger::after {
    background: var(--red);
}

.metric-attack::after {
    background: var(--purple);
}

.metric-network::after {
    background: var(--teal);
}

.metric-status::after {
    background: var(--blue);
}

.dashboard-columns {
    display: grid;
    gap: 1rem;
    grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr);
    margin-bottom: 1rem;
}

.dashboard-columns-equal {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.dashboard-panel {
    padding: 1rem;
}

.dashboard-panel h2 {
    font-size: 1.05rem;
    font-weight: 700;
    margin: 0;
}

.panel-heading {
    align-items: baseline;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.panel-heading span {
    color: var(--app-muted);
    font-size: .85rem;
    white-space: nowrap;
}

.trend-panel-mail {
    border-top: 4px solid var(--green);
}

.trend-panel-attacks {
    border-top: 4px solid var(--purple);
}

.rank-list {
    display: grid;
    gap: .85rem;
}

.rank-row {
    display: grid;
    gap: .35rem;
    grid-template-columns: minmax(0, 1fr) auto;
}

.rank-row span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.rank-bar {
    grid-column: 1 / -1;
    height: .5rem;
    overflow: hidden;
    background: #edf2f7;
    border-radius: 999px;
}

.rank-bar i {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--blue), var(--teal));
    border-radius: inherit;
}

.compact-table .table {
    min-width: 0;
    table-layout: fixed;
    width: 100%;
}

.compact-table .table th:last-child,
.compact-table .table td:last-child {
    text-align: right;
    width: 8rem;
}

.compact-table .table th:first-child,
.compact-table .table td:first-child {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}

.tag-list span {
    background: #f1f5f9;
    border: 1px solid var(--app-border);
    border-radius: 999px;
    color: #344054;
    padding: .35rem .65rem;
}

.source-grid {
    display: grid;
    gap: .75rem;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.source-grid div {
    background: #f8fafc;
    border: 1px solid var(--app-border);
    border-radius: 8px;
    padding: .75rem;
}

.source-grid span {
    color: var(--app-muted);
    display: block;
    font-size: .85rem;
    margin-bottom: .25rem;
}

.source-grid small {
    color: var(--app-muted);
}

.source-ok {
    border-left: 4px solid #1f8a5b !important;
}

.source-warn {
    border-left: 4px solid #d9822b !important;
}

.alert-list {
    margin: 0;
    padding-left: 1.1rem;
}

.alert-list li + li {
    margin-top: .5rem;
}

.action-list {
    display: grid;
    gap: .75rem;
}

.action-item {
    background: #f8fafc;
    border: 1px solid var(--app-border);
    border-left: 4px solid var(--blue);
    border-radius: 8px;
    padding: .85rem .9rem;
}

.action-item strong {
    display: block;
    margin-bottom: .25rem;
}

.action-item span {
    color: var(--app-muted);
    display: block;
    line-height: 1.45;
}

.action-danger {
    border-left-color: var(--red);
}

.action-warn {
    border-left-color: var(--orange);
}

.action-ok {
    border-left-color: var(--green);
}

.action-info {
    border-left-color: var(--blue);
}

.line-chart {
    margin: 0;
}

.line-chart svg {
    display: block;
    height: auto;
    width: 100%;
}

.chart-grid {
    stroke: #e8edf5;
    stroke-width: 1;
}

.chart-axis,
.chart-date {
    fill: var(--app-muted);
    font-size: 12px;
}

.chart-date {
    text-anchor: middle;
}

.chart-line {
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 4;
}

.chart-dot {
    fill: #ffffff;
    stroke-width: 3;
}

.chart-ok {
    stroke: var(--green);
}

.chart-blocked {
    stroke: var(--orange);
}

.chart-attacks {
    stroke: var(--red);
}

.chart-dot.chart-ok {
    stroke: var(--green);
}

.chart-dot.chart-blocked {
    stroke: var(--orange);
}

.chart-dot.chart-attacks {
    stroke: var(--red);
}

.chart-legend {
    color: var(--app-muted);
    display: flex;
    flex-wrap: wrap;
    gap: .6rem;
    margin-top: .75rem;
}

.chart-legend span {
    align-items: center;
    display: inline-flex;
    gap: .35rem;
}

.chart-legend i {
    border-radius: 999px;
    display: inline-block;
    height: .7rem;
    width: .7rem;
}

.chart-legend .chart-ok {
    background: var(--green);
}

.chart-legend .chart-blocked {
    background: var(--orange);
}

.chart-legend .chart-attacks {
    background: var(--red);
}

.source-grid-compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.app-footer {
    align-items: center;
    color: var(--app-muted);
    display: flex;
    font-size: .85rem;
    gap: 1rem;
    justify-content: space-between;
    padding: 1.25rem;
}

@media (max-width: 768px) {
    .app-shell {
        padding: .75rem;
    }

    .filter-panel .input-group {
        display: grid;
        gap: .5rem;
    }

    .filter-panel .input-group > * {
        width: 100%;
    }

    .confirm-actions {
        grid-template-columns: 1fr;
    }

    .dashboard-grid,
    .metric-strip,
    .dashboard-columns,
    .source-grid {
        grid-template-columns: 1fr;
    }

    .overview-panel,
    .panel-heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .overview-meta {
        width: 100%;
    }

    .app-footer {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (min-width: 769px) and (max-width: 1199px) {
    .dashboard-grid,
    .metric-strip {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .dashboard-columns,
    .source-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}