/* =====================================================================
   Traffic Logic Sandbox · UI stylesheet
   Design language inspired by koterverket.caninescorebook.com,
   tinted with the cyber-blue palette of the v1 concept screenshot.
   Both light and dark themes are first-class.
   ===================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ---------- Light theme (default · "day") ---------- */
:root {
    --bg:           #eef2f9;
    --bg-grain:     rgba(13,19,33,.05);
    --paper:        #ffffff;
    --paper-2:      rgba(255,255,255,.92);
    --panel:        #ffffff;
    --panel-soft:   #f5f7fb;
    --elevated:     #ffffff;

    --text:         #0d1321;
    --text-soft:    #34405a;
    --muted:        #5b6a85;
    --line:         rgba(13,19,33,.12);
    --line-2:       rgba(13,19,33,.06);

    --accent:       #1f6fff;
    --accent-2:     #1d4ed8;
    --accent-soft:  rgba(31,111,255,.10);
    --accent-glow:  rgba(31,111,255,.18);
    --accent-text:  #ffffff;

    --status-ok:    #15803d;
    --status-warn:  #b45309;
    --status-error: #b91c1c;
    --status-info:  #1d4ed8;

    --road-asphalt: #2c333d;
    --road-shoulder:#1d232c;
    --road-marking: #ffffff;
    --road-stop:    #ffd24a;

    --grid-soft:    rgba(31,111,255,.04);
    --grid-strong:  rgba(31,111,255,.10);

    --shadow:       0 18px 50px rgba(13,19,33,.08);
    --shadow-card:  0 1px 0 rgba(13,19,33,.04), 0 1px 14px rgba(13,19,33,.05);

    --radius:       12px;
    --radius-lg:    16px;
    --radius-pill:  999px;

    --font-ui:      'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
    --font-mono:    'JetBrains Mono', ui-monospace, SFMono-Regular, Consolas, monospace;
}

/* ---------- Dark theme · "night" matches concept image ---------- */
:root[data-theme="dark"],
.app-shell[data-theme="dark"] {
    --bg:           #0a1018;
    --bg-grain:     rgba(255,255,255,.04);
    --paper:        #0f1620;
    --paper-2:      rgba(15,22,32,.94);
    --panel:        #131c28;
    --panel-soft:   #0c131c;
    --elevated:     #182334;

    --text:         #e6ecf6;
    --text-soft:    #b8c4d6;
    --muted:        #6f809b;
    --line:         rgba(127,163,217,.16);
    --line-2:       rgba(127,163,217,.08);

    --accent:       #4f9bff;
    --accent-2:     #1f6fff;
    --accent-soft:  rgba(79,155,255,.16);
    --accent-glow:  rgba(79,155,255,.32);
    --accent-text:  #ffffff;

    --status-ok:    #34d399;
    --status-warn:  #fbbf24;
    --status-error: #f87171;
    --status-info:  #60a5fa;

    --road-asphalt: #2a313c;
    --road-shoulder:#0f141c;
    --road-marking: #ffffff;
    --road-stop:    #fcd34d;

    --grid-soft:    rgba(79,155,255,.05);
    --grid-strong:  rgba(79,155,255,.13);

    --shadow:       0 24px 60px rgba(0,0,0,.55);
    --shadow-card:  0 1px 0 rgba(255,255,255,.04) inset, 0 12px 32px rgba(0,0,0,.35);
}

/* ---------- Reset ---------- */
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
    font-family: var(--font-ui);
    color: var(--text);
    background: var(--bg);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
button:disabled, .is-disabled { cursor: not-allowed; opacity: .45; }
a { color: inherit; }

/* Subtle paper-grain noise (caninescorebook signature) */
body::before {
    content: "";
    position: fixed; inset: 0;
    pointer-events: none;
    opacity: .14;
    mix-blend-mode: multiply;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.75' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)' opacity='.38'/%3E%3C/svg%3E");
}
:root[data-theme="dark"] body::before,
.app-shell[data-theme="dark"] ~ body::before { mix-blend-mode: screen; opacity: .045; }

/* =====================================================================
   App shell · 5-region grid (concept image layout)
   ===================================================================== */
.app-shell {
    height: 100vh;
    display: grid;
    grid-template-columns: 240px 1fr 340px;
    grid-template-rows: 64px 1fr 220px 36px;
    grid-template-areas:
        "topbar topbar topbar"
        "left   canvas right"
        "left   bottom right"
        "status status status";
    background: var(--bg);
    color: var(--text);
}

/* =====================================================================
   Top bar
   ===================================================================== */
.topbar {
    grid-area: topbar;
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 0 20px;
    background: var(--paper-2);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line-2);
    z-index: 5;
}

.brand-block {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 240px;
}

.brand-mark {
    width: 38px; height: 38px;
    border-radius: 11px;
    display: grid; place-items: center;
    color: #fff;
    background: linear-gradient(140deg, var(--accent), var(--accent-2));
    box-shadow: 0 6px 22px var(--accent-glow);
}
.brand-mark svg { width: 22px; height: 22px; }

.brand-title {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: .01em;
    line-height: 1.1;
}
.brand-subtitle {
    margin-top: 2px;
    font-size: 10.5px;
    color: var(--muted);
    letter-spacing: .12em;
    text-transform: uppercase;
    font-family: var(--font-mono);
}

/* Mode tabs */
.topbar-tabs {
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 4px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--panel-soft);
}
.tab-button {
    height: 32px;
    padding: 0 14px;
    border: 0;
    border-radius: 9px;
    background: transparent;
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
}
.tab-button:hover { color: var(--text); }
.tab-button.is-active {
    color: var(--accent-text);
    background: linear-gradient(180deg, var(--accent), var(--accent-2));
    box-shadow: 0 1px 0 rgba(255,255,255,.18) inset, 0 6px 16px var(--accent-glow);
}

/* Status chips (Command / Time / Sim time) */
.topbar-status {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
}
.status-chip {
    display: grid;
    grid-template-rows: auto auto;
    align-items: center;
    padding: 6px 12px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--panel);
    min-width: 96px;
}
.status-chip-label {
    font-size: 9.5px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--muted);
}
.status-chip-value {
    margin-top: 2px;
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
}
.status-chip-value.is-ok { color: var(--status-ok); }
.status-chip-value.is-warn { color: var(--status-warn); }

.status-chip-value .dot {
    display: inline-block;
    width: 8px; height: 8px;
    border-radius: 50%;
    margin-right: 6px;
    background: currentColor;
    box-shadow: 0 0 10px currentColor;
}

/* Topbar action cluster */
.topbar-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.icon-button {
    width: 36px; height: 36px;
    display: grid; place-items: center;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--panel);
    color: var(--muted);
}
.icon-button:hover { color: var(--accent); border-color: var(--accent); }
.icon-button svg { width: 18px; height: 18px; }

.primary-button {
    height: 36px;
    padding: 0 16px;
    border: 0;
    border-radius: 10px;
    background: linear-gradient(180deg, var(--accent), var(--accent-2));
    color: var(--accent-text);
    font-weight: 700;
    box-shadow: 0 8px 18px var(--accent-glow);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.primary-button:hover { filter: brightness(1.05); }
.primary-button svg { width: 14px; height: 14px; }

.ghost-button {
    height: 36px;
    padding: 0 14px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--panel);
    color: var(--text-soft);
    font-weight: 600;
}
.ghost-button:hover { color: var(--text); border-color: var(--accent); }
.ghost-button.danger { color: var(--status-error); }

.speed-control {
    display: flex; align-items: center; gap: 8px;
    padding: 6px 12px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--panel);
    color: var(--muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .1em;
}
.speed-control input[type="range"] { width: 88px; }
.speed-control strong {
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 12px;
    min-width: 26px;
    text-align: center;
}

/* =====================================================================
   Left rail
   ===================================================================== */
.left-rail {
    grid-area: left;
    overflow-y: auto;
    padding: 14px;
    background: var(--panel);
    border-right: 1px solid var(--line-2);
    display: flex; flex-direction: column; gap: 14px;
}

.rail-section { display: flex; flex-direction: column; gap: 8px; }

.rail-section-title {
    font-size: 10.5px;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--muted);
    padding: 0 6px;
    margin: 0;
    font-weight: 700;
}

/* Tool list */
.tool-list { display: grid; gap: 4px; }
.tool-item {
    display: grid;
    grid-template-columns: 22px 1fr;
    align-items: center;
    gap: 10px;
    height: 32px;
    padding: 0 8px;
    border: 1px solid transparent;
    border-radius: 9px;
    background: transparent;
    color: var(--text-soft);
    font-size: 12.5px;
    font-weight: 500;
    text-align: left;
}
.tool-item:hover {
    background: var(--accent-soft);
    color: var(--text);
}
.tool-item.is-active {
    color: var(--accent);
    background: var(--accent-soft);
    border-color: var(--accent-glow);
}
.tool-item .tool-icon {
    width: 18px; height: 18px;
    color: currentColor;
    opacity: .8;
}
.tool-item.is-active .tool-icon { opacity: 1; }

/* Road brush row */
.brush-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
}
.brush-tile {
    aspect-ratio: 1;
    border: 1px solid var(--line);
    border-radius: 9px;
    background: var(--panel-soft);
    color: var(--muted);
    display: grid;
    place-items: center;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .04em;
}
.brush-tile:hover { border-color: var(--accent); color: var(--text); }
.brush-tile.is-active {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--accent);
}
.brush-tile span {
    display: inline-block;
    width: 22px; height: 22px;
    border-radius: 4px;
    background: var(--road-asphalt);
    box-shadow: 0 0 0 1px var(--line) inset;
    margin-bottom: 4px;
    position: relative;
}
.brush-tile span::after {
    content: "";
    position: absolute; inset: 50% 2px auto 2px;
    height: 2px;
    background: repeating-linear-gradient(90deg, #fff 0 4px, transparent 4px 7px);
    transform: translateY(-1px);
    opacity: .8;
}

/* Layer toggles */
.layer-list { display: grid; gap: 4px; }
.layer-row {
    display: grid;
    grid-template-columns: 16px 1fr 18px;
    gap: 10px;
    align-items: center;
    height: 28px;
    padding: 0 8px;
    border-radius: 8px;
    color: var(--text-soft);
    font-size: 12px;
}
.layer-row:hover { background: var(--accent-soft); color: var(--text); }
.layer-row .layer-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 8px var(--accent-glow);
}
.layer-row input[type="checkbox"] { accent-color: var(--accent); }

/* Mini map */
.mini-map {
    border: 1px solid var(--line);
    border-radius: 12px;
    background:
        radial-gradient(circle at 30% 30%, var(--accent-soft), transparent 55%),
        var(--panel-soft);
    height: 110px;
    position: relative;
    overflow: hidden;
}
.mini-map::after {
    content: "";
    position: absolute;
    left: 18%; top: 24%; width: 36%; height: 32%;
    border: 1.5px solid var(--accent);
    border-radius: 4px;
}

/* Region selector */
.region-row {
    display: grid;
    grid-template-columns: 1fr 30px;
    gap: 8px;
    align-items: center;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--panel-soft);
    font-size: 12px;
}
.region-row strong {
    display: block;
    font-size: 9.5px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--muted);
    font-weight: 700;
}

/* =====================================================================
   Canvas region
   ===================================================================== */
.canvas-region {
    grid-area: canvas;
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 50% 38%, var(--grid-strong), transparent 55%),
        var(--bg);
}

#simulationCanvas {
    width: 100%; height: 100%;
    display: block;
    cursor: grab;
    touch-action: none;
}
#simulationCanvas.is-panning { cursor: grabbing; }
.app-shell.is-editor-mode #simulationCanvas { cursor: crosshair; }
.app-shell.is-editor-mode #simulationCanvas.is-panning { cursor: grabbing; }

/* Top-of-canvas: map selector + coordinate readout */
.canvas-topstrip {
    position: absolute;
    top: 14px; left: 16px; right: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    pointer-events: none;
}
.canvas-topstrip > * { pointer-events: auto; }

.map-pill {
    display: grid;
    grid-template-rows: auto auto;
    padding: 6px 14px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--paper-2);
    backdrop-filter: blur(8px);
    min-width: 220px;
}
.map-pill span {
    font-size: 9.5px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--muted);
    font-weight: 700;
}
.map-pill strong {
    margin-top: 2px;
    font-size: 13px;
}

.coord-pill {
    height: 32px;
    padding: 0 12px;
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--paper-2);
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 11px;
    backdrop-filter: blur(8px);
}

.dimension-toggle {
    display: inline-flex;
    align-items: center;
    height: 32px;
    padding: 0 12px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--paper-2);
    color: var(--text);
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 11px;
    letter-spacing: .08em;
}

/* Floating zoom toolbar (left side of canvas) */
.zoom-toolbar {
    position: absolute;
    left: 16px; top: 80px;
    display: grid; gap: 4px;
    padding: 4px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--paper-2);
    backdrop-filter: blur(8px);
}
.zoom-toolbar button {
    width: 32px; height: 32px;
    border: 0;
    border-radius: 8px;
    background: transparent;
    color: var(--text-soft);
    display: grid; place-items: center;
}
.zoom-toolbar button:hover { background: var(--accent-soft); color: var(--accent); }
.zoom-toolbar button.is-active { background: var(--accent-soft); color: var(--accent); }
.zoom-toolbar svg { width: 16px; height: 16px; }

/* Selection / scale bar / compass */
.scale-bar {
    position: absolute;
    left: 18px; bottom: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 10.5px;
    pointer-events: none;
}
.scale-bar::before {
    content: "";
    width: 60px; height: 4px;
    border-left: 1px solid currentColor;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
}

.compass {
    position: absolute;
    right: 18px; bottom: 18px;
    width: 48px; height: 48px;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: var(--paper-2);
    backdrop-filter: blur(8px);
    display: grid; place-items: center;
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 700;
}

.canvas-hud {
    position: absolute;
    left: 16px; bottom: 36px;
    display: flex; gap: 6px;
    pointer-events: none;
}
.canvas-hud span,
.badge {
    display: inline-flex;
    align-items: center;
    height: 22px;
    padding: 0 10px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--paper-2);
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 10.5px;
    backdrop-filter: blur(6px);
}

/* =====================================================================
   Right rail · Inspector
   ===================================================================== */
.right-rail {
    grid-area: right;
    background: var(--panel);
    border-left: 1px solid var(--line-2);
    overflow: auto;
    padding: 14px;
    display: flex; flex-direction: column; gap: 12px;
}

.inspector-header {
    display: flex; flex-direction: column; gap: 6px;
}
.inspector-header h2 {
    margin: 0;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
}
.inspector-meta {
    display: flex; align-items: center; gap: 8px;
    color: var(--muted);
    font-size: 11px;
}
.inspector-meta strong {
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
}
.inspector-meta .pill {
    margin-left: auto;
    padding: 3px 9px;
    border: 1px solid var(--status-ok);
    color: var(--status-ok);
    border-radius: 999px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .1em;
}

.inspector-tabs {
    display: flex;
    gap: 2px;
    padding: 4px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--panel-soft);
}
.inspector-tab {
    flex: 1;
    height: 30px;
    border: 0;
    border-radius: 7px;
    background: transparent;
    color: var(--muted);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
}
.inspector-tab.is-active {
    color: var(--accent);
    background: var(--accent-soft);
}

.inspector-content { display: grid; gap: 12px; }

.inspector-section {
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--paper);
    padding: 12px;
}
.inspector-section h3 {
    margin: 0 0 10px;
    font-size: 10.5px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--muted);
    font-weight: 700;
}

.kv-table { display: grid; gap: 7px; }
.kv-row {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    align-items: baseline;
    color: var(--text-soft);
    font-size: 12px;
}
.kv-row strong {
    color: var(--text);
    font-family: var(--font-mono);
    font-weight: 600;
    text-align: right;
}

/* Inline form rows used by editor inspector */
.form-row {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 10px;
    align-items: center;
    margin-bottom: 8px;
    color: var(--muted);
    font-size: 11.5px;
    text-transform: uppercase;
    letter-spacing: .06em;
    font-weight: 600;
}
.form-row select,
.form-row input[type="number"],
.form-row input[type="text"] {
    height: 30px;
    padding: 0 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel-soft);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 12px;
    text-transform: none;
    letter-spacing: 0;
}
.form-row select:focus,
.form-row input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 6px;
    font-size: 11.5px;
    color: var(--text-soft);
}
.form-toggle input { accent-color: var(--accent); }

/* Junction-type one-click buttons inside Inspector */
.junction-type-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}
.junction-type-btn {
    display: grid;
    gap: 3px;
    padding: 9px 10px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--panel-soft);
    color: var(--text-soft);
    text-align: left;
    cursor: pointer;
    transition: border-color .15s ease, background .15s ease, transform .12s ease;
}
.junction-type-btn:hover {
    border-color: var(--accent);
    color: var(--text);
    transform: translateY(-1px);
}
.junction-type-btn.is-active {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-glow) inset;
}
.junction-type-btn strong {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .02em;
}
.junction-type-btn span {
    font-size: 10.5px;
    color: var(--muted);
    line-height: 1.25;
}
.junction-type-btn.is-active span { color: var(--accent); opacity: .85; }

/* Approach buttons (NORTH / EAST / SOUTH / WEST) */
.approach-tabs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
    margin-bottom: 10px;
}
.approach-tab {
    height: 28px;
    border: 1px solid var(--line);
    border-radius: 7px;
    background: var(--panel-soft);
    color: var(--muted);
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: .08em;
}
.approach-tab.is-active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

/* Lane permission grid (concept image table) */
.lane-permission-grid {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-family: var(--font-mono);
    font-size: 11px;
}
.lane-permission-grid th,
.lane-permission-grid td {
    padding: 6px 4px;
    text-align: center;
    border-bottom: 1px solid var(--line-2);
    color: var(--text-soft);
}
.lane-permission-grid th {
    color: var(--muted);
    font-weight: 600;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: .08em;
}
.lane-permission-grid td.row-label {
    text-align: left;
    color: var(--muted);
    padding-left: 6px;
}
.lane-permission-grid td .perm-cell {
    display: inline-grid;
    place-items: center;
    width: 22px; height: 22px;
    border-radius: 6px;
    border: 1px solid var(--line);
    background: var(--panel-soft);
    cursor: pointer;
    color: var(--muted);
}
.lane-permission-grid td .perm-cell.is-allowed {
    background: rgba(52,211,153,.16);
    border-color: var(--status-ok);
    color: var(--status-ok);
}
.lane-permission-grid td .perm-cell.is-denied {
    background: rgba(248,113,113,.10);
    border-color: var(--status-error);
    color: var(--status-error);
}
.lane-permission-grid td .perm-cell.is-disabled {
    opacity: .35;
    cursor: not-allowed;
}

.section-cta {
    display: block;
    width: 100%;
    margin-top: 10px;
    padding: 8px 0;
    border: 0;
    border-top: 1px solid var(--line-2);
    background: transparent;
    color: var(--accent);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
}
.section-cta:hover { color: var(--accent-2); }

/* Why / consequence boxes */
.why-section .why-box {
    padding: 10px 12px;
    border-radius: 10px;
    background: var(--accent-soft);
    border-left: 3px solid var(--accent);
    color: var(--text);
}
.why-section .why-box strong { display: block; margin-bottom: 4px; }
.why-section .why-box.warning { background: rgba(245,158,11,.1); border-color: var(--status-warn); }
.why-section .why-box.critical { background: rgba(239,68,68,.1); border-color: var(--status-error); }
.why-list {
    margin: 8px 0 0;
    padding-left: 18px;
    color: var(--text-soft);
    font-size: 11.5px;
    line-height: 1.4;
}

.consequence-list { display: grid; gap: 6px; }
.consequence-item {
    padding: 7px 9px;
    border-radius: 9px;
    background: var(--panel-soft);
    border-left: 3px solid var(--status-ok);
    font-size: 11.5px;
    color: var(--text-soft);
}
.consequence-item.warning  { border-left-color: var(--status-warn); }
.consequence-item.critical { border-left-color: var(--status-error); }
.consequence-item span {
    display: block;
    margin-top: 3px;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 10.5px;
}

.edge-list { display: grid; gap: 5px; }
.edge-pill {
    padding: 6px 8px;
    border-radius: 8px;
    border: 1px solid var(--line-2);
    background: var(--panel-soft);
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 10.5px;
}

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

/* =====================================================================
   Bottom dashboard
   ===================================================================== */
.bottom-dashboard {
    grid-area: bottom;
    display: grid;
    grid-template-columns: 1.2fr 1.4fr 1fr 1.1fr;
    gap: 10px;
    padding: 10px;
    background: var(--panel);
    border-top: 1px solid var(--line-2);
    overflow: hidden;
}

.metric-card {
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--paper);
    padding: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.metric-card-header {
    display: flex; align-items: center; justify-content: space-between;
}
.metric-card-header h3 {
    margin: 0;
    font-size: 11px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--muted);
    font-weight: 700;
}
.metric-card-header .metric-meta {
    font-size: 10px;
    color: var(--muted);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: .1em;
}

.metric-hero {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 12px;
    align-items: center;
}
.metric-hero .gauge {
    width: 60px; height: 60px;
    border-radius: 50%;
    background: conic-gradient(var(--accent) 0deg 220deg, var(--line) 220deg 360deg);
    display: grid; place-items: center;
    color: var(--text);
    position: relative;
}
.metric-hero .gauge::before {
    content: "";
    position: absolute; inset: 6px;
    border-radius: 50%;
    background: var(--paper);
}
.metric-hero .gauge strong {
    position: relative;
    font-family: var(--font-mono);
    font-size: 16px;
    font-weight: 700;
}
.metric-hero .gauge-label {
    color: var(--muted);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: .12em;
}
.metric-hero-stats { display: grid; gap: 4px; font-size: 11px; }
.metric-hero-stats span { color: var(--muted); }
.metric-hero-stats strong {
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 13px;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(78px, 1fr));
    gap: 8px;
}
.metric-tile {
    padding: 8px;
    border-radius: 10px;
    background: var(--panel-soft);
    border: 1px solid var(--line-2);
}
.metric-tile span {
    display: block;
    color: var(--muted);
    font-size: 9.5px;
    letter-spacing: .1em;
    text-transform: uppercase;
}
.metric-tile strong {
    display: block;
    margin-top: 4px;
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--text);
}

.event-log {
    flex: 1;
    overflow-y: auto;
    display: grid;
    align-content: start;
    gap: 4px;
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--muted);
}
.event-row {
    display: grid;
    grid-template-columns: 50px 130px 1fr;
    gap: 10px;
    padding: 6px 8px;
    border-radius: 8px;
    background: var(--panel-soft);
    border: 1px solid var(--line-2);
    align-items: center;
}
.event-row strong { color: var(--text); }
.event-row .dot {
    display: inline-block; width: 6px; height: 6px;
    border-radius: 50%; background: var(--status-ok);
    margin-right: 6px;
}
.event-row.is-warn .dot  { background: var(--status-warn); }
.event-row.is-error .dot { background: var(--status-error); }

.metric-link {
    color: var(--accent);
    font-size: 11px;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: .08em;
    text-transform: uppercase;
}
.metric-link:hover { color: var(--accent-2); }

.validation-list { display: grid; gap: 6px; font-size: 11px; }
.validation-row {
    display: grid;
    grid-template-columns: 1fr auto 8px;
    gap: 8px; align-items: center;
    color: var(--text-soft);
}
.validation-row .score {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--text);
}
.validation-row .pip {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--status-ok);
}
.validation-row.is-warn .pip { background: var(--status-warn); }
.validation-row.is-error .pip { background: var(--status-error); }

/* Sparkline placeholder */
.sparkline {
    flex: 1;
    height: 60px;
    background:
        linear-gradient(180deg, transparent, var(--accent-soft)),
        repeating-linear-gradient(90deg, var(--line-2) 0 1px, transparent 1px 24px);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}
.sparkline::after {
    content: "";
    position: absolute; left: 0; right: 0; bottom: 18px;
    height: 1.5px;
    background: var(--accent);
    box-shadow: 0 0 14px var(--accent-glow);
    clip-path: polygon(
        0% 50%, 8% 38%, 18% 60%, 28% 30%, 38% 56%, 48% 22%,
        58% 50%, 68% 28%, 78% 56%, 88% 32%, 100% 44%, 100% 100%, 0% 100%
    );
}

/* =====================================================================
   Status bar (footer)
   ===================================================================== */
.status-bar {
    grid-area: status;
    display: grid;
    grid-template-columns: auto 1fr auto auto auto;
    gap: 18px;
    align-items: center;
    padding: 0 18px;
    background: var(--paper-2);
    border-top: 1px solid var(--line-2);
    font-family: var(--font-mono);
    font-size: 10.5px;
    color: var(--muted);
    letter-spacing: .04em;
    text-transform: uppercase;
}
.status-bar .status-pill {
    display: inline-flex; align-items: center; gap: 6px;
    color: var(--status-ok);
}
.status-bar .status-pill::before {
    content: "";
    width: 8px; height: 8px;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 8px currentColor;
}
.status-bar .status-spread { display: flex; gap: 18px; align-items: center; }

/* =====================================================================
   Editor preview & overlays
   ===================================================================== */
.editor-only { display: none; }
.app-shell.is-editor-mode .editor-only { display: inline-flex; }
.simulation-only { display: inline-flex; }
.app-shell.is-editor-mode .simulation-only { display: none; }

.editor-status {
    margin-top: 8px;
    padding: 8px 10px;
    border-radius: 9px;
    border: 1px solid var(--line-2);
    background: var(--accent-soft);
    color: var(--text-soft);
    font-size: 11px;
    line-height: 1.4;
}

/* Inputs in editor lookup forms inherit from form-row */

/* =====================================================================
   Responsive (desktop-first; concept layout assumes ≥ 1280px)
   ===================================================================== */
@media (max-width: 1280px) {
    .app-shell {
        grid-template-columns: 220px 1fr 300px;
        grid-template-rows: 60px 1fr 200px 32px;
    }
    .brand-subtitle, .topbar-tabs { display: none; }
}

@media (max-width: 1024px) {
    .bottom-dashboard {
        grid-template-columns: 1fr 1fr;
    }
}

/* =====================================================================
   Small helpers
   ===================================================================== */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0,0,0,0) !important;
    border: 0 !important;
}

[hidden] { display: none !important; }


/* Junction Editor v2 */
.junction-editor-hero input.junction-name-input {
    width: 100%;
    margin: 8px 0 12px;
    border: 1px solid rgba(124, 160, 224, 0.22);
    background: rgba(5, 12, 22, 0.92);
    color: var(--text, #eef5ff);
    border-radius: 12px;
    padding: 10px 12px;
    font: inherit;
    outline: none;
}

.junction-editor-hero input.junction-name-input:focus {
    border-color: rgba(96,165,250,0.75);
    box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
}

.junction-summary-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-top: 10px;
}

.junction-small-stat {
    padding: 10px;
    border: 1px solid rgba(124, 160, 224, 0.12);
    background: rgba(255,255,255,0.035);
    border-radius: 12px;
}

.junction-small-stat span {
    display: block;
    color: var(--muted, #9db2d6);
    font-size: 11px;
    margin-bottom: 5px;
}

.junction-small-stat strong {
    font-size: 16px;
}

.junction-type-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 9px;
}

.junction-type-row-compact {
    grid-template-columns: 1fr;
}

.junction-type-btn {
    text-align: left;
    min-height: 72px;
    padding: 10px;
    border-radius: 13px;
    border: 1px solid rgba(124, 160, 224, 0.16);
    background: rgba(6, 13, 24, 0.80);
    color: var(--text, #eef5ff);
    cursor: pointer;
}

.junction-type-btn strong {
    display: block;
    font-size: 13px;
    margin-bottom: 4px;
}

.junction-type-btn span {
    display: block;
    color: var(--muted, #9db2d6);
    font-size: 11px;
    line-height: 1.35;
}

.junction-type-btn.is-active {
    border-color: rgba(96,165,250,0.75);
    background: rgba(59,130,246,0.17);
    box-shadow: inset 0 0 0 1px rgba(147,197,253,0.12);
}

.junction-radius-input {
    width: 100%;
    margin: 10px 0 4px;
    accent-color: #60a5fa;
}

.junction-approach-list {
    display: grid;
    gap: 8px;
}

.junction-approach-pill {
    padding: 10px;
    border-radius: 12px;
    border: 1px solid rgba(124, 160, 224, 0.12);
    background: rgba(255,255,255,0.03);
}

.junction-approach-pill strong {
    display: block;
    font-size: 12px;
    color: #bfdbfe;
    margin-bottom: 4px;
}

.junction-approach-pill span {
    display: block;
    font-size: 11.5px;
    color: var(--muted, #9db2d6);
    line-height: 1.35;
}