/* ==========================================================================
   supplychain.observer // Control Tower
   Cyberpunk data-viz dashboard (logistics variant)
   ========================================================================== */

:root {
    --c-dark: #0b0e14;
    --c-panel: #141820;
    --c-text: #c8d0e0;
    --c-active: #3b8bff;
    --c-alert: #ff4040;
    --c-warn: #ffb020;
    --c-ok: #40d060;
    --c-border: #1e2430;

    --c-text-dim: #8a93a8;
    --c-text-faint: #5a6276;

    --font-display: "Rajdhani", "Inter", sans-serif;
    --font-body: "Titillium Web", "Inter", sans-serif;
    --font-mono: "Red Hat Mono", "JetBrains Mono", monospace;

    --gap: 12px;
    --radius: 4px;
}

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

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    background: var(--c-dark);
    color: var(--c-text);
    font-family: var(--font-body);
    font-weight: 300;
    font-size: 0.875rem;
    line-height: 1.5;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
    background-image:
        radial-gradient(circle at 20% 10%, rgba(59, 139, 255, 0.05), transparent 40%),
        radial-gradient(circle at 80% 90%, rgba(59, 139, 255, 0.04), transparent 40%);
}

/* ==========================================================================
   GRID LAYOUT
   ========================================================================== */

.dashboard {
    display: grid;
    grid-template-columns: 280px 1fr 320px;
    grid-template-rows: auto 1fr;
    grid-template-areas:
        "topbar topbar topbar"
        "left   center right";
    height: 100vh;
    width: 100vw;
    gap: var(--gap);
    padding: var(--gap);
}

.topbar { grid-area: topbar; }
.left-panel { grid-area: left; }
.center { grid-area: center; }
.right-panel { grid-area: right; }

/* ==========================================================================
   PANELS (shared)
   ========================================================================== */

.panel {
    background: var(--c-panel);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    min-height: 0;
    position: relative;
    overflow: hidden;
}

.panel::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-active), transparent);
    opacity: 0.4;
}

.panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.85rem;
    border-bottom: 1px solid var(--c-border);
    flex-shrink: 0;
}

.panel-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(0.85rem, 1vw, 0.95rem);
    letter-spacing: 0.12em;
    color: var(--c-text);
    text-transform: uppercase;
}

.panel-count {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--c-active);
    background: rgba(59, 139, 255, 0.1);
    padding: 2px 6px;
    border-radius: 2px;
}

.panel-tag {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--c-ok);
    border: 1px solid var(--c-ok);
    padding: 2px 6px;
    border-radius: 2px;
    letter-spacing: 0.1em;
}

.panel-tag.pulse {
    color: var(--c-alert);
    border-color: var(--c-alert);
    animation: blink 1.5s infinite;
}

.panel-tools {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.panel-foot {
    border-top: 1px solid var(--c-border);
    padding: 0.6rem 0.85rem;
    flex-shrink: 0;
    font-family: var(--font-mono);
    font-size: 0.7rem;
}

/* ==========================================================================
   TOPBAR
   ========================================================================== */

.topbar {
    display: grid;
    grid-template-columns: 280px 1fr auto;
    align-items: stretch;
    gap: var(--gap);
    background: var(--c-panel);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 0.65rem 0.85rem;
    position: relative;
    overflow: hidden;
}

.topbar::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--c-active) 20%, var(--c-active) 80%, transparent);
    opacity: 0.5;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    border-right: 1px solid var(--c-border);
    padding-right: 0.85rem;
}

.brand-mark {
    width: 38px;
    height: 38px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    display: grid;
    place-items: center;
    background: rgba(59, 139, 255, 0.05);
    animation: scan 4s linear infinite;
}

@keyframes scan {
    0%, 100% { box-shadow: inset 0 0 0 0 rgba(59, 139, 255, 0); }
    50% { box-shadow: inset 0 0 12px 0 rgba(59, 139, 255, 0.25); }
}

.brand-name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 0.06em;
    color: var(--c-text);
}

.brand-sub {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--c-active);
    letter-spacing: 0.18em;
    margin-top: 1px;
}

.kpi-strip {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--gap);
    align-items: stretch;
}

.kpi {
    background: rgba(11, 14, 20, 0.5);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 0.55rem 0.7rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    transition: border-color 0.25s ease, background 0.25s ease;
    overflow: hidden;
}

.kpi:hover {
    border-color: var(--c-active);
    background: rgba(59, 139, 255, 0.06);
}

.kpi::after {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--c-active);
    opacity: 0.6;
}

.kpi[data-kpi="alerts"]::after { background: var(--c-alert); }
.kpi[data-kpi="latency"]::after { background: var(--c-ok); }
.kpi[data-kpi="transit"]::after { background: var(--c-warn); }

.kpi-label {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    color: var(--c-text-dim);
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.kpi-value {
    display: flex;
    align-items: baseline;
    gap: 0.15rem;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(1.25rem, 2vw, 1.75rem);
    line-height: 1;
    color: var(--c-text);
    margin: 0.2rem 0;
}

.kpi-value.alert .kpi-num { color: var(--c-alert); }

.kpi-num {
    font-variant-numeric: tabular-nums;
}

.kpi-unit {
    font-family: var(--font-mono);
    font-weight: 400;
    font-size: 0.85rem;
    color: var(--c-text-dim);
}

.kpi-trend {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: var(--c-text-dim);
}

.kpi-trend.up { color: var(--c-ok); }
.kpi-trend.down { color: var(--c-warn); }
.kpi-trend.warn { color: var(--c-warn); }
.kpi-trend.ok { color: var(--c-ok); }

.clock {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    border-left: 1px solid var(--c-border);
    padding-left: 0.85rem;
    min-width: 150px;
}

.clock-row {
    display: flex;
    justify-content: space-between;
    gap: 0.6rem;
    font-family: var(--font-mono);
    font-size: 0.78rem;
}

.clock-label {
    color: var(--c-text-faint);
    letter-spacing: 0.1em;
}

.clock-time {
    color: var(--c-active);
    font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   LEFT PANEL // MONITORED NODES
   ========================================================================== */

.filter-row {
    display: flex;
    gap: 4px;
    padding: 0.55rem 0.85rem;
    border-bottom: 1px solid var(--c-border);
    flex-shrink: 0;
}

.filter-btn {
    flex: 1;
    background: transparent;
    border: 1px solid var(--c-border);
    border-radius: 2px;
    color: var(--c-text-dim);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    padding: 5px 0;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-btn:hover {
    color: var(--c-text);
    border-color: var(--c-active);
}

.filter-btn.active {
    background: rgba(59, 139, 255, 0.12);
    color: var(--c-active);
    border-color: var(--c-active);
}

.node-list {
    list-style: none;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

.node-list::-webkit-scrollbar { width: 6px; }
.node-list::-webkit-scrollbar-track { background: transparent; }
.node-list::-webkit-scrollbar-thumb { background: var(--c-border); border-radius: 3px; }
.node-list::-webkit-scrollbar-thumb:hover { background: var(--c-active); }

.node-item {
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-rows: auto auto;
    column-gap: 0.6rem;
    align-items: center;
    padding: 0.55rem 0.85rem;
    border-bottom: 1px solid rgba(30, 36, 48, 0.6);
    cursor: pointer;
    transition: background 0.15s ease;
}

.node-item:hover {
    background: rgba(59, 139, 255, 0.05);
}

.node-item.selected {
    background: rgba(59, 139, 255, 0.1);
    border-left: 2px solid var(--c-active);
    padding-left: calc(0.85rem - 2px);
}

.node-status {
    grid-row: 1 / 3;
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.node-status.ok { background: var(--c-ok); box-shadow: 0 0 6px var(--c-ok); }
.node-status.warn { background: var(--c-warn); box-shadow: 0 0 6px var(--c-warn); }
.node-status.crit {
    background: var(--c-alert);
    box-shadow: 0 0 6px var(--c-alert);
    animation: blink 1.5s infinite;
}

.node-name {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.04em;
    color: var(--c-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.node-meta {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--c-text-faint);
    letter-spacing: 0.06em;
}

.node-load {
    grid-row: 1 / 3;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--c-text-dim);
    text-align: right;
}

.node-load .load-bar {
    width: 36px;
    height: 3px;
    background: var(--c-border);
    margin-top: 3px;
    overflow: hidden;
    border-radius: 1px;
}

.node-load .load-bar > span {
    display: block;
    height: 100%;
    background: var(--c-active);
}

.foot-row {
    display: flex;
    justify-content: space-between;
    color: var(--c-text-faint);
    letter-spacing: 0.08em;
    line-height: 1.6;
}

.ok-text { color: var(--c-ok); }

/* ==========================================================================
   CENTER // MAP + CHART
   ========================================================================== */

.center {
    display: grid;
    grid-template-rows: 1.6fr 1fr;
    gap: var(--gap);
    min-height: 0;
}

.map-panel { min-height: 0; }
.chart-panel { min-height: 0; }

.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--c-text-dim);
    letter-spacing: 0.08em;
}

.dot {
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
}

.dot-ok { background: var(--c-ok); box-shadow: 0 0 4px var(--c-ok); }
.dot-warn { background: var(--c-warn); box-shadow: 0 0 4px var(--c-warn); }
.dot-crit { background: var(--c-alert); box-shadow: 0 0 4px var(--c-alert); }
.dot-active { background: var(--c-active); box-shadow: 0 0 4px var(--c-active); }

.metric-pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    border: 1px solid var(--c-border);
    border-radius: 2px;
    padding: 2px 6px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--c-text-dim);
    letter-spacing: 0.08em;
}

.map-wrap {
    flex: 1;
    min-height: 0;
    position: relative;
    background:
        linear-gradient(180deg, rgba(11, 14, 20, 0.6), rgba(11, 14, 20, 0.95)),
        radial-gradient(ellipse at center, rgba(59, 139, 255, 0.08), transparent 60%);
}

#mapSvg {
    width: 100%;
    height: 100%;
    display: block;
}

.continents path {
    fill: rgba(30, 36, 48, 0.8);
    stroke: rgba(59, 139, 255, 0.25);
    stroke-width: 0.5;
}

.lanes path {
    fill: none;
    stroke-dasharray: 4 3;
    stroke-linecap: round;
}

.pulses circle {
    fill: var(--c-active);
    opacity: 0;
}

.nodes .map-node {
    cursor: pointer;
    transition: transform 0.2s ease;
    transform-origin: center;
    transform-box: fill-box;
}

.nodes .map-node:hover {
    transform: scale(1.3);
}

.labels text {
    font-family: var(--font-mono);
    font-size: 9px;
    fill: var(--c-text-dim);
    letter-spacing: 0.08em;
    pointer-events: none;
}

.map-overlay {
    position: absolute;
    bottom: 8px;
    left: 8px;
    display: flex;
    gap: 6px;
    pointer-events: none;
}

.overlay-tag {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--c-text-faint);
    background: rgba(11, 14, 20, 0.7);
    border: 1px solid var(--c-border);
    padding: 2px 6px;
    border-radius: 2px;
    letter-spacing: 0.1em;
}

/* Chart panel */
.chart-wrap {
    flex: 1;
    min-height: 0;
    padding: 0.75rem 0.85rem;
    position: relative;
}

#chartSvg {
    width: 100%;
    height: 100%;
    display: block;
}

#chartGrid line {
    stroke: var(--c-border);
    stroke-width: 0.5;
}

#chartAxis text {
    font-family: var(--font-mono);
    font-size: 9px;
    fill: var(--c-text-faint);
    letter-spacing: 0.08em;
}

#chartBars rect {
    fill: var(--c-warn);
    opacity: 0.7;
}

/* ==========================================================================
   RIGHT PANEL // EVENT FEED
   ========================================================================== */

.feed-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    padding: 0.55rem 0.85rem;
    border-bottom: 1px solid var(--c-border);
    flex-shrink: 0;
}

.feed-stat {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 1px solid var(--c-border);
    border-radius: 2px;
    padding: 4px 8px;
}

.fs-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--c-text-faint);
    letter-spacing: 0.1em;
}

.fs-val {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.05rem;
    font-variant-numeric: tabular-nums;
}

.fs-val.crit { color: var(--c-alert); }
.fs-val.warn { color: var(--c-warn); }
.fs-val.info { color: var(--c-active); }

.event-feed {
    list-style: none;
    overflow-y: auto;
    max-height: 60vh;
    flex: 1;
    min-height: 0;
}

.event-feed::-webkit-scrollbar { width: 6px; }
.event-feed::-webkit-scrollbar-track { background: transparent; }
.event-feed::-webkit-scrollbar-thumb { background: var(--c-border); border-radius: 3px; }
.event-feed::-webkit-scrollbar-thumb:hover { background: var(--c-active); }

.event {
    display: grid;
    grid-template-columns: 4px 1fr;
    border-bottom: 1px solid rgba(30, 36, 48, 0.6);
    padding: 0;
    animation: slidein 0.35s ease;
}

@keyframes slidein {
    from { opacity: 0; transform: translateX(8px); }
    to   { opacity: 1; transform: translateX(0); }
}

.event-bar {
    background: var(--c-active);
    align-self: stretch;
}

.event.crit .event-bar { background: var(--c-alert); }
.event.warn .event-bar { background: var(--c-warn); }
.event.info .event-bar { background: var(--c-active); }

.event-body {
    padding: 0.5rem 0.85rem;
}

.event-row1 {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2px;
}

.event-time {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--c-text-faint);
    letter-spacing: 0.05em;
    flex-shrink: 0;
}

.event-sev {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.14em;
    padding: 1px 5px;
    border-radius: 2px;
    border: 1px solid currentColor;
    flex-shrink: 0;
}

.event.crit .event-sev { color: var(--c-alert); }
.event.warn .event-sev { color: var(--c-warn); }
.event.info .event-sev { color: var(--c-active); }

.event.crit .event-sev::before {
    content: "";
    display: inline-block;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--c-alert);
    margin-right: 4px;
    animation: blink 1.5s infinite;
    vertical-align: middle;
}

.event-msg {
    font-family: var(--font-body);
    font-size: 0.78rem;
    color: var(--c-text);
    line-height: 1.35;
    margin-bottom: 2px;
}

.event-meta {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--c-text-dim);
    letter-spacing: 0.06em;
}

.event-meta .arrow { color: var(--c-text-faint); margin: 0 4px; }

.ack-btn {
    width: 100%;
    background: transparent;
    border: 1px solid var(--c-active);
    color: var(--c-active);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.16em;
    padding: 6px 0;
    cursor: pointer;
    border-radius: 2px;
    transition: background 0.2s ease;
}

.ack-btn:hover {
    background: rgba(59, 139, 255, 0.1);
}

.ack-btn:active {
    transform: translateY(1px);
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */

@keyframes blink {
    0%, 49% { opacity: 1; }
    50%, 100% { opacity: 0.25; }
}

@keyframes pulse-ring {
    0%   { r: 4; opacity: 0.9; }
    100% { r: 24; opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
    .panel-tag.pulse,
    .node-status.crit,
    .event.crit .event-sev::before,
    .brand-mark {
        animation: none !important;
    }
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 1280px) {
    .dashboard {
        grid-template-columns: 240px 1fr 280px;
    }
    .topbar {
        grid-template-columns: 240px 1fr auto;
    }
    .kpi-strip {
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: repeat(2, 1fr);
    }
}

@media (max-width: 960px) {
    html, body { overflow: auto; }
    .dashboard {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto auto;
        grid-template-areas:
            "topbar"
            "center"
            "left"
            "right";
        height: auto;
    }
    .topbar {
        grid-template-columns: 1fr;
    }
    .brand { border-right: none; padding-right: 0; }
    .clock { border-left: none; padding-left: 0; }
    .kpi-strip {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
    }
    .center { grid-template-rows: 60vh auto; }
    .left-panel, .right-panel { max-height: 60vh; }
}