:root {
    color-scheme: dark;
    --bg: #061211;
    --panel: #0b1f1d;
    --panel-2: #102825;
    --line: rgba(191, 222, 216, 0.14);
    --line-strong: rgba(191, 222, 216, 0.26);
    --text: #f2f8f6;
    --muted: #9cb4b0;
    --accent: #f0c75e;
    --accent-dark: #ad8422;
    --teal: #5eead4;
    --danger: #fb7185;
    --success: #86efac;
    --sidebar-width: 390px;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; }

body {
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
}

button, input, select, textarea { font: inherit; }
button { color: inherit; touch-action: manipulation; }

.app-shell { height: 100%; display: grid; grid-template-rows: 74px minmax(0, 1fr); }

.topbar {
    align-items: center;
    background: rgba(6, 18, 17, 0.98);
    border-bottom: 1px solid var(--line);
    display: grid;
    gap: 24px;
    grid-template-columns: minmax(260px, 1fr) auto minmax(100px, 1fr);
    padding: 0 22px;
    position: relative;
    z-index: 20;
}

.brand { align-items: center; display: flex; gap: 12px; min-width: 0; }
.brand img { height: 31px; object-fit: contain; object-position: left center; width: 88px; }
.brand h1 { font-size: 17px; letter-spacing: -0.01em; margin: 1px 0 0; white-space: nowrap; }

.eyebrow {
    color: var(--accent);
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.16em;
    margin: 0;
    text-transform: uppercase;
}

.mode-switch {
    align-items: center;
    background: #0c211e;
    border: 1px solid var(--line);
    border-radius: 999px;
    display: flex;
    gap: 3px;
    padding: 4px;
}

.mode-button, .view-toggle button, .admin-tabs button {
    background: transparent;
    border: 0;
    border-radius: 999px;
    color: var(--muted);
    cursor: pointer;
    font-size: 12px;
    font-weight: 750;
    padding: 9px 14px;
    transition: 160ms ease;
}

.mode-button:hover, .view-toggle button:hover, .admin-tabs button:hover { color: var(--text); }
.mode-button.active { background: var(--accent); color: #1b1709; }

.ghost-button, .map-button, .secondary-button, .text-button, .danger-button {
    border: 0;
    cursor: pointer;
    font-weight: 750;
}

.ghost-button {
    background: transparent;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    justify-self: end;
    padding: 9px 16px;
}

.workspace { display: grid; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); min-height: 0; }
.workspace.sidebar-collapsed { grid-template-columns: 0 minmax(0, 1fr); }
.sidebar-scrim { display: none; }

.sidebar {
    background: linear-gradient(180deg, #0b1f1d, #071715);
    border-right: 1px solid var(--line);
    min-width: 0;
    overflow: hidden auto;
    position: relative;
    z-index: 10;
}

.sidebar::-webkit-scrollbar { width: 8px; }
.sidebar::-webkit-scrollbar-thumb { background: #24423e; border-radius: 999px; }
.workspace.sidebar-collapsed .sidebar { opacity: 0; pointer-events: none; }

.panel { display: none; min-height: 100%; padding: 30px 25px 40px; }
.panel.active { display: block; }
.panel h2 { font-size: 26px; letter-spacing: -0.035em; line-height: 1.1; margin: 9px 0 12px; }
.panel h3 { font-size: 13px; margin: 0; }
.muted { color: var(--muted); line-height: 1.6; margin: 0 0 18px; }
.muted.small { font-size: 12px; }
.optional { color: #6f8e89; font-size: 11px; font-weight: 500; }

.view-toggle {
    background: #071715;
    border: 1px solid var(--line);
    border-radius: 12px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    margin: 20px 0;
    padding: 4px;
}

.view-toggle button { border-radius: 8px; font-size: 11px; padding: 9px 4px; }
.view-toggle button.active { background: #1c3d38; color: var(--teal); }

.selection-card, .admin-callout {
    align-items: center;
    background: linear-gradient(135deg, rgba(240, 199, 94, 0.13), rgba(94, 234, 212, 0.06));
    border: 1px solid rgba(240, 199, 94, 0.22);
    border-radius: 14px;
    display: flex;
    gap: 12px;
    margin: 18px 0 24px;
    padding: 14px;
}

.selection-card strong { display: block; font-size: 13px; }
.selection-card p { color: var(--muted); font-size: 11px; margin: 3px 0 0; }
.selection-icon { color: var(--accent); font-size: 26px; }
.section-heading { align-items: center; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; padding-bottom: 10px; }
.section-heading span { background: #17332f; border-radius: 99px; color: var(--teal); font-size: 11px; padding: 3px 8px; }

.zone-list { display: grid; gap: 7px; margin-top: 12px; }
.zone-item {
    align-items: center;
    background: rgba(255,255,255,0.025);
    border: 1px solid transparent;
    border-radius: 11px;
    cursor: pointer;
    display: grid;
    gap: 10px;
    grid-template-columns: 9px minmax(0, 1fr) auto;
    padding: 10px;
    text-align: left;
    transition: 140ms ease;
}
.zone-item:hover { background: rgba(255,255,255,0.055); border-color: var(--line); }
.zone-swatch { border-radius: 99px; height: 24px; }
.zone-item strong { display: block; font-size: 12px; }
.zone-item small { color: var(--muted); font-size: 10px; }
.zone-type { color: #76938e; font-size: 9px; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; }

.attribution { color: #54706b; font-size: 9px; line-height: 1.5; margin: 24px 0 0; }
.back-button { margin-bottom: 20px; }

form { display: grid; gap: 15px; margin-top: 22px; }
label { color: #cfe0dd; display: grid; font-size: 11px; font-weight: 700; gap: 7px; }
input, select, textarea {
    background: #071715;
    border: 1px solid var(--line-strong);
    border-radius: 9px;
    color: var(--text);
    min-width: 0;
    outline: none;
    padding: 11px 12px;
    resize: vertical;
}
input:focus, select:focus, textarea:focus { border-color: rgba(94, 234, 212, 0.62); box-shadow: 0 0 0 3px rgba(94, 234, 212, 0.08); }
input[type="color"] { height: 42px; padding: 5px; width: 100%; }
input[type="range"] { accent-color: var(--accent); padding: 0; }
.form-grid { display: grid; gap: 12px; }
.form-grid.two { grid-template-columns: 1fr 1fr; }

.location-picker {
    background: rgba(94, 234, 212, 0.06);
    border: 1px dashed rgba(94, 234, 212, 0.42);
    border-radius: 12px;
    color: var(--muted);
    cursor: pointer;
    display: grid;
    gap: 5px;
    padding: 14px;
    text-align: left;
}
.location-picker strong { color: var(--teal); font-size: 12px; }

.primary-button {
    background: var(--accent);
    border: 0;
    border-radius: 10px;
    color: #1b1709;
    cursor: pointer;
    font-weight: 850;
    padding: 12px 16px;
}
.primary-button:hover { background: #ffdb77; }
.wide { width: 100%; }
.secondary-button { background: #183732; border-radius: 8px; color: var(--teal); padding: 9px 11px; }
.text-button { background: none; color: var(--teal); padding: 4px 0; }
.danger-button { background: rgba(251, 113, 133, 0.12); border-radius: 9px; color: var(--danger); padding: 11px; }
.form-status { color: var(--muted); font-size: 11px; line-height: 1.5; margin: 0; min-height: 16px; }
.form-status.error { color: var(--danger); }
.form-status.success { color: var(--success); }

.report-filters { display: grid; gap: 8px; grid-template-columns: 1fr 1fr; margin: 20px 0 12px; }
.report-filters select { font-size: 11px; padding: 9px; }
.reports-list { display: grid; gap: 10px; }
.report-card { background: rgba(255,255,255,0.03); border: 1px solid var(--line); border-radius: 13px; padding: 13px; }
.report-card-header { align-items: start; display: flex; gap: 10px; justify-content: space-between; }
.report-card h3 { font-size: 13px; line-height: 1.35; margin: 0; }
.report-card p { color: var(--muted); font-size: 11px; line-height: 1.5; margin: 9px 0; }
.report-meta { align-items: center; color: #75908b; display: flex; flex-wrap: wrap; font-size: 9px; gap: 7px; }
.status-chip, .severity-chip { border-radius: 99px; font-size: 9px; font-weight: 850; padding: 4px 7px; text-transform: uppercase; }
.status-chip { background: rgba(94,234,212,.1); color: var(--teal); }
.severity-chip.high, .severity-chip.urgent { background: rgba(251,113,133,.12); color: var(--danger); }
.severity-chip.normal { background: rgba(240,199,94,.1); color: var(--accent); }
.severity-chip.low { background: rgba(134,239,172,.1); color: var(--success); }
.empty-state { border: 1px dashed var(--line-strong); border-radius: 12px; color: var(--muted); font-size: 11px; margin-top: 14px; padding: 18px; text-align: center; }

.admin-title-row { align-items: start; display: flex; justify-content: space-between; }
.admin-tabs { border-bottom: 1px solid var(--line); display: grid; grid-template-columns: repeat(3, 1fr); margin: 20px 0; }
.admin-tabs button { border-radius: 0; font-size: 10px; padding: 10px 3px; }
.admin-tabs button.active { border-bottom: 2px solid var(--accent); color: var(--accent); }
.admin-tab { display: none; }
.admin-tab.active { display: block; }
.admin-callout { color: #d7cda9; font-size: 11px; line-height: 1.5; }
.admin-form { border-bottom: 1px solid var(--line); padding-bottom: 18px; }
.quadrant-fieldset { border: 0; margin: 0; padding: 0; }
.quadrant-fieldset legend { color: #cfe0dd; font-size: 11px; font-weight: 700; margin-bottom: 8px; }
.quadrant-editor { display: grid; gap: 8px; grid-template-columns: 1fr 1fr; }
.quadrant-editor label { background: rgba(94, 234, 212, 0.04); border: 1px solid var(--line); border-radius: 10px; padding: 8px; }
.quadrant-editor label span { color: #6f918b; font-size: 9px; letter-spacing: .08em; text-transform: uppercase; }
.quadrant-editor input { padding: 9px; }
.stack-spacing-fieldset { background: rgba(255,255,255,.018); border: 1px solid var(--line); border-radius: 11px; padding: 10px; }
.stack-split-controls { display: grid; gap: 9px; }
.stack-split-controls label > span { align-items: center; display: flex; justify-content: space-between; }
.stack-split-controls output { color: var(--accent); font-size: 10px; }
#areaForm select { font-size: 13px; min-height: 46px; padding: 12px 38px 12px 12px; width: 100%; }
.button-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }
.drawing-count { color: var(--muted); font-size: 10px; }
.area-point-section { display: grid; gap: 9px; }
.area-point-heading { align-items: end; display: flex; justify-content: space-between; }
.area-point-heading strong { color: #cfe0dd; font-size: 11px; }
.area-point-heading span { color: var(--muted); font-size: 9px; }
.area-point-editor { display: grid; gap: 7px; max-height: 280px; overflow-y: auto; padding-right: 3px; }
.area-point-row { align-items: end; background: rgba(94,234,212,.035); border: 1px solid var(--line); border-radius: 10px; display: grid; gap: 7px; grid-template-columns: 26px 1fr 1fr 30px; padding: 8px; }
.area-point-index { align-self: center; background: rgba(240,199,94,.12); border-radius: 99px; color: var(--accent); font-size: 10px; font-weight: 850; line-height: 24px; text-align: center; }
.area-point-row label { font-size: 9px; gap: 4px; }
.area-point-row input { padding: 8px; }
.remove-point-button { background: rgba(251,113,133,.1); border: 1px solid rgba(251,113,133,.2); border-radius: 8px; color: var(--danger); height: 34px; padding: 0; }
.point-empty { border: 1px dashed var(--line); border-radius: 10px; color: var(--muted); font-size: 10px; line-height: 1.5; margin: 0; padding: 12px; }
.admin-zone-list { margin-top: 18px; }
.admin-report-controls { display: grid; gap: 8px; margin-top: 10px; }
.admin-report-controls textarea { font-size: 11px; }
.admin-report-controls select { font-size: 11px; padding: 8px; }

.viewport { background: #061311; min-width: 0; overflow: hidden; position: relative; }
.viewport canvas { display: block; height: 100%; width: 100%; }
.viewport-toolbar { display: grid; gap: 8px; position: absolute; right: 16px; top: 16px; z-index: 5; }
.map-button {
    align-items: center;
    backdrop-filter: blur(10px);
    background: rgba(8, 28, 25, 0.82);
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    display: flex;
    height: 38px;
    justify-content: center;
    width: 38px;
}
.map-button.satellite-button.active { background: #1c3d38; border-color: rgba(94,234,212,.68); color: var(--teal); }
.satellite-attribution {
    background: rgba(6,18,17,.82);
    border-radius: 5px;
    bottom: 9px;
    color: rgba(215,232,228,.82);
    font-size: 8px;
    max-width: calc(100% - 26px);
    padding: 3px 6px;
    position: absolute;
    right: 9px;
    text-decoration: none;
    z-index: 7;
}
.satellite-attribution:hover { color: #fff; }
.map-hint {
    backdrop-filter: blur(10px);
    background: rgba(6, 18, 17, 0.75);
    border: 1px solid var(--line);
    border-radius: 99px;
    bottom: 16px;
    color: var(--muted);
    font-size: 10px;
    left: 50%;
    padding: 8px 13px;
    position: absolute;
    transform: translateX(-50%);
    white-space: nowrap;
    z-index: 5;
}
.location-toast {
    background: rgba(8, 28, 25, 0.94);
    border: 1px solid rgba(240,199,94,.38);
    border-radius: 12px;
    left: 16px;
    max-width: 280px;
    padding: 11px 13px;
    position: absolute;
    top: 16px;
    z-index: 5;
}
.location-toast strong { color: var(--accent); display: block; font-size: 12px; }
.location-toast span { color: var(--muted); font-size: 10px; }

.loading {
    align-items: center;
    background: #061311;
    display: flex;
    flex-direction: column;
    gap: 15px;
    inset: 0;
    justify-content: center;
    position: absolute;
    z-index: 8;
}
.loading.hidden { display: none; }
.loader { animation: spin 900ms linear infinite; border: 2px solid #25443f; border-radius: 50%; border-top-color: var(--accent); height: 28px; width: 28px; }
@keyframes spin { to { transform: rotate(360deg); } }

.map-label {
    background: rgba(6, 18, 17, .9);
    border: 1px solid rgba(240,199,94,.55);
    border-radius: 7px;
    color: #fff4c7;
    font-size: 10px;
    font-weight: 850;
    padding: 4px 7px;
    pointer-events: none;
    white-space: nowrap;
}
.stack-label { border-color: rgba(94,234,212,.5); color: var(--teal); font-size: 8px; }
.xray-stack-label { background: rgba(6,18,17,.7); font-size: 7px; opacity: .78; padding: 3px 5px; }
.point-label { background: var(--accent); border: 0; color: #1b1709; font-size: 9px; min-width: 18px; padding: 3px 5px; text-align: center; }
.edge-add-label { background: var(--teal); border: 0; color: #06211d; font-size: 12px; line-height: 14px; min-width: 20px; padding: 2px 5px; text-align: center; }
.legacy-label { border-color: rgba(251,113,133,.5); color: #fecdd3; font-size: 8px; }

@media (max-width: 860px) {
    :root { --mobile-nav-height: 66px; }
    html, body { overscroll-behavior: none; }
    .app-shell { height: 100dvh; grid-template-rows: 58px minmax(0, 1fr); }
    .topbar { gap: 10px; grid-template-columns: 1fr auto; padding: 0 12px; }
    .brand .eyebrow, .brand h1 { display: none; }
    .brand { width: 76px; }
    .brand img { height: 27px; width: 76px; }
    .ghost-button { min-height: 42px; padding: 8px 14px; }
    .mode-switch {
        background: rgba(6,18,17,.98);
        border: 0;
        border-radius: 0;
        border-top: 1px solid var(--line-strong);
        bottom: 0;
        display: grid;
        gap: 2px;
        grid-auto-columns: 1fr;
        grid-auto-flow: column;
        height: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom));
        left: 0;
        padding: 7px 8px calc(7px + env(safe-area-inset-bottom));
        position: fixed;
        width: 100%;
        z-index: 30;
    }
    .mode-button { border-radius: 11px; font-size: 10px; min-height: 46px; padding: 8px 5px; white-space: nowrap; }
    .workspace { display: grid; grid-template-columns: 1fr; position: relative; }
    .workspace.sidebar-collapsed { grid-template-columns: 1fr; }
    .sidebar {
        -webkit-overflow-scrolling: touch;
        border: 1px solid var(--line-strong);
        border-bottom: 0;
        border-radius: 19px 19px 0 0;
        bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom));
        box-shadow: 0 -18px 50px rgba(0,0,0,.48);
        height: min(72dvh, 680px);
        left: 8px;
        opacity: 0;
        overscroll-behavior: contain;
        pointer-events: none;
        position: absolute;
        right: 8px;
        top: auto;
        transform: translateY(calc(100% + 80px));
        transition: opacity 180ms ease, transform 220ms cubic-bezier(.2,.8,.2,1);
        width: auto;
        z-index: 12;
    }
    .sidebar::before { background: #55736e; border-radius: 99px; content: ''; height: 4px; left: 50%; opacity: .75; position: absolute; top: 9px; transform: translateX(-50%); width: 42px; z-index: 2; }
    .workspace:not(.sidebar-collapsed) .sidebar { opacity: 1; pointer-events: auto; transform: translateY(0); }
    .workspace.sidebar-collapsed .sidebar { opacity: 0; transform: translateY(calc(100% + 80px)); }
    .sidebar-scrim {
        background: rgba(0,0,0,.38);
        border: 0;
        display: block;
        inset: 0 0 calc(var(--mobile-nav-height) + env(safe-area-inset-bottom));
        opacity: 1;
        pointer-events: auto;
        position: absolute;
        transition: opacity 180ms ease;
        z-index: 11;
    }
    .workspace.sidebar-collapsed .sidebar-scrim { opacity: 0; pointer-events: none; }
    .panel { min-height: auto; padding: 31px 18px 38px; }
    .panel h2 { font-size: 23px; }
    input:not([type="range"]):not([type="color"]), select, textarea { min-height: 44px; }
    .primary-button, .secondary-button, .danger-button { min-height: 44px; }
    .zone-item { min-height: 56px; padding: 11px; }
    .admin-tabs button, .view-toggle button { min-height: 44px; }
    .viewport-toolbar { right: 12px; top: 12px; }
    .map-button { height: 46px; width: 46px; }
    .satellite-attribution { bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom) + 5px); font-size: 7px; max-width: calc(100% - 20px); right: 6px; }
    .map-hint { bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom) + 10px); max-width: calc(100% - 110px); padding: 7px 11px; text-align: center; white-space: normal; }
    .location-toast { left: 12px; max-width: calc(100% - 86px); top: 12px; }
}

@media (max-width: 520px) {
    .panel { padding: 31px 15px 34px; }
    .form-grid.two, .report-filters { grid-template-columns: 1fr; }
    .quadrant-editor { gap: 6px; }
    .area-point-row { gap: 5px; grid-template-columns: 24px minmax(0,1fr) minmax(0,1fr) 36px; padding: 7px; }
}