:root,
[data-theme="green"] {
    --bg: #000000;
    --fg: #33ff33;
    --fg-dim: #1a991a;
    --fg-bright: #66ff66;
    --accent: #00ff00;
    --warn: #ffb000;
    --error: #ff4d4d;
    --info: #66ccff;
    --muted: #666666;
    --panel: #031403;
    --border: #1a991a;
    --glow: rgba(51, 255, 51, 0.45);
    --font: "Courier New", Courier, monospace;
    --scanline: rgba(0, 0, 0, 0.28);
}

[data-theme="amber"] {
    --fg: #ffb000;
    --fg-dim: #b37b00;
    --fg-bright: #ffd56a;
    --accent: #ffcc33;
    --warn: #ffe08a;
    --error: #ff6b4a;
    --info: #ffd56a;
    --muted: #8a6a2b;
    --panel: #140e00;
    --border: #b37b00;
    --glow: rgba(255, 176, 0, 0.4);
}

[data-theme="cyan"] {
    --fg: #33e0ff;
    --fg-dim: #1a8a99;
    --fg-bright: #7aefff;
    --accent: #00d4ff;
    --warn: #ffe08a;
    --error: #ff6b8a;
    --info: #a8f0ff;
    --muted: #4a7a88;
    --panel: #001418;
    --border: #1a8a99;
    --glow: rgba(51, 224, 255, 0.45);
}

[data-theme="ice"] {
    --fg: #d8e8ff;
    --fg-dim: #7a90b0;
    --fg-bright: #ffffff;
    --accent: #a8c8ff;
    --warn: #ffd56a;
    --error: #ff8a8a;
    --info: #c8dcff;
    --muted: #6a7a90;
    --panel: #0a0e14;
    --border: #5a7090;
    --glow: rgba(200, 220, 255, 0.35);
}

[data-theme="rose"] {
    --fg: #ff6b9a;
    --fg-dim: #b33a66;
    --fg-bright: #ff9ec0;
    --accent: #ff4d88;
    --warn: #ffd56a;
    --error: #ff5555;
    --info: #ffb0d0;
    --muted: #8a4a62;
    --panel: #14040a;
    --border: #b33a66;
    --glow: rgba(255, 107, 154, 0.4);
}

[data-theme="violet"] {
    --fg: #c792ff;
    --fg-dim: #7a4ab0;
    --fg-bright: #e0b8ff;
    --accent: #b06bff;
    --warn: #ffd56a;
    --error: #ff6b8a;
    --info: #d4b0ff;
    --muted: #6a5080;
    --panel: #0c0614;
    --border: #7a4ab0;
    --glow: rgba(199, 146, 255, 0.4);
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    min-height: 100%;
}

body {
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font);
    line-height: 1.5;
    text-shadow: 0 0 6px var(--glow);
}

body.crt-effect {
    animation: phosphorFlicker 3.2s infinite;
}

a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px dashed var(--accent);
}

a:hover,
a:focus-visible {
    color: var(--warn);
    border-bottom: 1px solid var(--warn);
    outline: none;
}

#matrix {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.12;
}

.scanlines,
.crt-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 50;
}

.scanlines {
    background: repeating-linear-gradient(
        to bottom,
        transparent 0,
        transparent 2px,
        var(--scanline) 3px
    );
    opacity: 0.35;
}

.crt-overlay {
    background: radial-gradient(ellipse at center, transparent 50%, rgba(0, 0, 0, 0.45) 100%);
}

.app {
    position: relative;
    z-index: 1;
    max-width: 1080px;
    margin: 0 auto;
    padding: 16px 16px 72px;
    min-height: 100vh;
}

.app.wide {
    max-width: 1280px;
}

.ascii-art {
    color: var(--fg-bright);
    font-size: 12px;
    line-height: 1.15;
    margin: 0 0 16px;
    overflow-x: auto;
}

.site-header,
.panel,
.node,
.help-modal,
.term-window {
    border: 1px solid var(--border);
    background: rgba(0, 8, 0, 0.72);
    box-shadow: 0 0 18px rgba(0, 255, 0, 0.08);
}

.site-header {
    padding: 10px 14px;
    margin-bottom: 18px;
}

.header-top {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    color: var(--fg-bright);
}

.nav-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    margin-top: 8px;
    font-size: 14px;
}

.nav-row a[aria-current="page"] {
    color: var(--warn);
    border-bottom-style: solid;
}

.prompt::before {
    content: "$ ";
    color: var(--accent);
}

.blink {
    animation: blink 1s step-end infinite;
}

.muted { color: var(--muted); }
.warn { color: var(--warn); }
.error { color: var(--error); }
.info { color: var(--info); }
.success { color: var(--fg-bright); }

.panel {
    padding: 14px;
    margin: 0 0 16px;
}

.panel h1,
.panel h2,
.panel h3 {
    margin: 0 0 10px;
    font-size: 16px;
    font-weight: normal;
    color: var(--fg-bright);
    letter-spacing: 0.04em;
}

.grid {
    display: grid;
    gap: 12px;
}

@media (min-width: 760px) {
    .grid.cols-2 { grid-template-columns: 1fr 1fr; }
}

.app-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.app-list li {
    margin: 0 0 10px;
}

.app-list a {
    display: inline-block;
}

button,
.btn,
input[type="file"]::file-selector-button {
    font-family: var(--font);
    background: transparent;
    color: var(--fg);
    border: 1px solid var(--border);
    padding: 6px 10px;
    cursor: pointer;
    text-shadow: 0 0 6px var(--glow);
    font-size: 14px;
    line-height: 1.3;
    box-sizing: border-box;
}

.toolbar > label.btn,
.toolbar > .file-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    color: var(--fg);
}

button:hover,
.btn:hover,
.file-btn:hover,
button:focus-visible {
    color: var(--warn);
    border-color: var(--warn);
    outline: none;
}

button.danger { border-color: var(--error); color: var(--error); }
button.primary { border-color: var(--accent); color: var(--fg-bright); }

button:disabled,
.btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    color: var(--muted);
    border-color: var(--border);
}

.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

label {
    display: block;
    margin-bottom: 4px;
    color: var(--fg-bright);
}

input[type="text"],
input[type="number"],
select {
    font-family: var(--font);
    background: #001400;
    color: var(--fg);
    border: 1px solid var(--border);
    padding: 6px 8px;
    width: 100%;
    max-width: 280px;
    caret-color: var(--fg);
}

input:focus,
select:focus {
    outline: 1px solid var(--warn);
    box-shadow: 0 0 8px var(--glow);
}

input.invalid {
    border-color: var(--error);
    color: var(--error);
}

.field {
    margin-bottom: 12px;
}

.hint {
    font-size: 12px;
    color: var(--muted);
    margin: 4px 0 0;
}

.radio-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 6px;
}

.radio-row label {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0;
    color: var(--fg);
}

pre {
    white-space: pre-wrap;
    margin: 0;
}

.tree-node {
    border-left: 2px solid var(--border);
    margin: 10px 0 10px 8px;
    padding: 8px 0 4px 12px;
}

.tree-node.level-0 {
    border-left: 2px solid var(--accent);
    margin-left: 0;
}

.node-head {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    align-items: center;
    margin-bottom: 6px;
}

.node-head input[type="text"] {
    max-width: 240px;
    background: transparent;
    border: 1px dashed transparent;
    padding: 2px 6px;
}

.node-head input[type="text"]:hover,
.node-head input[type="text"]:focus {
    border-color: var(--border);
}

.meta {
    font-size: 13px;
    color: var(--fg-dim);
}

.bar {
    height: 10px;
    border: 1px solid var(--border);
    margin: 6px 0 10px;
    background: #001000;
}

.bar > span {
    display: block;
    height: 100%;
    background: var(--fg);
    box-shadow: 0 0 8px var(--glow);
}

.bar.warn > span { background: var(--warn); }
.bar.bad > span { background: var(--error); }

.binary {
    font-size: 12px;
    letter-spacing: 0.04em;
    overflow-x: auto;
}

.binary .net { color: var(--fg-bright); }
.binary .host { color: var(--muted); }
.binary .parent { text-decoration: underline; }

.banner {
    border: 1px solid var(--border);
    padding: 10px 12px;
    margin-bottom: 12px;
}

.banner.error { border-color: var(--error); color: var(--error); }
.banner.warn { border-color: var(--warn); color: var(--warn); }
.banner.ok { border-color: var(--accent); }

.term-window {
    min-height: 420px;
    padding: 12px 14px 16px;
}

.term-output {
    min-height: 280px;
    margin-bottom: 12px;
}

.term-line {
    margin: 0 0 2px;
}

.term-input-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.term-input-row input {
    border: none;
    background: transparent;
    box-shadow: none;
    max-width: none;
    flex: 1;
    padding: 0;
}

.term-input-row input:focus {
    outline: none;
    box-shadow: none;
}

.help-modal[hidden] {
    display: none;
}

.help-modal {
    position: fixed;
    z-index: 80;
    left: 50%;
    top: 12%;
    transform: translateX(-50%);
    width: min(640px, calc(100% - 24px));
    padding: 16px;
}

.help-modal kbd {
    border: 1px solid var(--border);
    padding: 0 5px;
    color: var(--warn);
}

.statusbar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 40;
    display: flex;
    justify-content: space-between;
    gap: 8px;
    flex-wrap: wrap;
    background: #001800;
    border-top: 1px solid var(--border);
    padding: 6px 12px;
    font-size: 12px;
    color: var(--fg-dim);
}

.coming-soon {
    opacity: 0.85;
}

.collapsible > summary {
    cursor: pointer;
    color: var(--fg-bright);
    margin-bottom: 8px;
}

.collapsible > summary:hover {
    color: var(--warn);
}

@keyframes blink {
    50% { opacity: 0; }
}

@keyframes phosphorFlicker {
    0%, 100% { text-shadow: 0 0 6px var(--glow); }
    48% { text-shadow: 1px 0 2px rgba(0, 30, 255, 0.28), -1px 0 2px rgba(255, 0, 80, 0.18), 0 0 8px var(--glow); }
    50% { text-shadow: -1px 0 2px rgba(0, 30, 255, 0.28), 1px 0 2px rgba(255, 0, 80, 0.18), 0 0 5px var(--glow); }
}

@media (prefers-reduced-motion: reduce) {
    body.crt-effect,
    .blink {
        animation: none;
    }
    .scanlines,
    #matrix {
        display: none;
    }
}

/* —— view tabs —— */
.view-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    margin-bottom: 14px;
    border-bottom: 1px solid var(--border);
}

.view-tabs button {
    border: 1px solid transparent;
    border-bottom: none;
    border-radius: 0;
    padding: 8px 14px;
    margin-bottom: -1px;
    background: transparent;
}

.view-tabs button[aria-selected="true"] {
    border-color: var(--border);
    border-bottom-color: var(--bg);
    color: var(--warn);
    background: rgba(0, 20, 0, 0.9);
}

/* —— address-space map —— */
.space-map {
    border: 1px solid var(--border);
    background: #000;
    min-height: 220px;
    padding: 4px;
    overflow: auto;
}

.map-block {
    position: relative;
    border: 1px solid var(--border);
    background: linear-gradient(180deg, rgba(0, 40, 0, 0.55), rgba(0, 12, 0, 0.9));
    min-width: 48px;
    min-height: 64px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    transition: border-color 0.12s, box-shadow 0.12s;
}

.map-block:hover {
    border-color: var(--warn);
}

.map-block.selected {
    border-color: var(--warn);
    box-shadow: inset 0 0 0 1px var(--warn), 0 0 14px var(--glow);
    z-index: 2;
}

.map-block.free {
    background: repeating-linear-gradient(
        -45deg,
        #000,
        #000 6px,
        #001a00 6px,
        #001a00 12px
    );
    opacity: 0.75;
    cursor: default;
}

.map-block .map-label {
    padding: 4px 6px;
    font-size: 11px;
    line-height: 1.25;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    border-bottom: 1px solid rgba(26, 153, 26, 0.35);
    color: var(--fg-bright);
}

.map-block .map-meta {
    padding: 2px 6px;
    font-size: 10px;
    color: var(--muted);
}

.map-children {
    display: flex;
    flex: 1;
    min-height: 48px;
    gap: 2px;
    padding: 2px;
}

.map-ruler {
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: var(--muted);
    margin: 4px 0 10px;
    font-variant-numeric: tabular-nums;
}

/* —— selection dock —— */
.dock {
    display: grid;
    gap: 12px;
    margin-top: 14px;
}

@media (min-width: 860px) {
    .dock {
        grid-template-columns: 1.2fr 1fr;
    }
}

.dock-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.cmd-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    border: 1px solid var(--border);
    padding: 8px 10px;
    background: rgba(0, 12, 0, 0.85);
}

.cmd-bar label {
    margin: 0;
    white-space: nowrap;
    color: var(--accent);
}

.cmd-bar input {
    flex: 1;
    max-width: none;
    border: none;
    background: transparent;
    padding: 0;
}

.cmd-bar input:focus {
    outline: none;
    box-shadow: none;
}

.cmd-hint {
    font-size: 12px;
    color: var(--muted);
    margin: 6px 0 0;
}

/* —— estimator pipeline —— */
.pipeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin: 14px 0;
}

.pipeline-layer {
    border: 1px solid var(--border);
    padding: 12px 14px;
    background: rgba(0, 14, 0, 0.75);
    position: relative;
}

.pipeline-layer + .pipeline-layer {
    margin-top: 22px;
}

.pipeline-layer + .pipeline-layer::before {
    content: "▼";
    position: absolute;
    top: -18px;
    left: 18px;
    color: var(--accent);
    font-size: 12px;
}

.pipeline-layer .layer-title {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    color: var(--fg-bright);
    margin-bottom: 8px;
}

.pipeline-layer .layer-mask {
    color: var(--warn);
}

.dual-gauge {
    display: grid;
    gap: 12px;
}

@media (min-width: 760px) {
    .dual-gauge {
        grid-template-columns: 1fr 1fr;
    }
}

.gauge-box {
    border: 1px solid var(--border);
    padding: 12px;
}

.gauge-box .big {
    font-size: 22px;
    color: var(--fg-bright);
    margin: 6px 0;
}

.handoff {
    margin-top: 14px;
    padding: 12px;
    border: 1px dashed var(--accent);
}

.kbd-row kbd,
.cmd-hint kbd {
    border: 1px solid var(--border);
    padding: 0 5px;
    color: var(--warn);
    font-family: var(--font);
}

.stat-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 18px;
    font-size: 13px;
    color: var(--fg-dim);
    margin: 8px 0 12px;
}

.stat-strip strong {
    color: var(--fg-bright);
    font-weight: normal;
}

.range-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.range-row input[type="range"] {
    flex: 1;
    accent-color: var(--accent);
}

.hub-grid {
    display: grid;
    gap: 12px;
}

@media (min-width: 700px) {
    .hub-grid {
        grid-template-columns: 1fr 1fr;
    }
    .hub-grid.cols-3 {
        grid-template-columns: 1fr 1fr 1fr;
    }
}

.hub-card {
    border: 1px solid var(--border);
    padding: 14px;
    background: rgba(0, 10, 0, 0.7);
}

.hub-card h2 {
    margin: 0 0 8px;
    font-size: 15px;
    font-weight: normal;
    color: var(--fg-bright);
}

.hub-card .status {
    font-size: 12px;
    color: var(--muted);
    margin-top: 10px;
}

.hub-card .status.live {
    color: var(--accent);
}

.tree-node[data-selected] {
    outline: 1px solid var(--warn);
    padding: 4px;
}