/* ============================================================
   Blueprint shell
   A compact drafting-instrument UI around the existing editor.
   This file is intentionally last in the cascade: it changes
   presentation only and preserves every existing control/ID.
   ============================================================ */

:root {
    color-scheme: light;
    --bp-void: #e8eef1;
    --bp-shell: #f7fafb;
    --bp-panel: #ffffff;
    --bp-panel-2: #edf3f5;
    --bp-line: rgba(42, 78, 91, .13);
    --bp-line-strong: rgba(42, 78, 91, .25);
    --bp-ink: #18313b;
    --bp-muted: #607b86;
    --bp-cyan: #0f8da2;
    --bp-cyan-strong: #08788c;
    --bp-accent-ink: #ffffff;
    --bp-amber: #a66b12;
    --bp-danger: #c3474e;
    --bp-appbar-start: #ffffff;
    --bp-appbar-end: #edf3f5;
    --bp-mode-bg: #e4ecef;
    --bp-button-text: #405e69;
    --bp-slide-bg: #e7eef1;
    --bp-toolbar-muted: #6b848d;
    --bp-canvas: #e4eaed;
    --bp-grid-major: rgba(48, 99, 115, .15);
    --bp-grid-minor: rgba(48, 99, 115, .065);
    --bp-grid-glow: rgba(65, 146, 166, .07);
    --bp-model-label: rgba(8, 120, 140, .72);
    --bp-drawer: rgba(248, 251, 252, .985);
    --bp-item: #ffffff;
    --bp-item-hover: #e8f3f5;
    --bp-item-label: #526f79;
    --bp-group-bg: #f4f8f9;
    --bp-input-bg: #ffffff;
    --bp-dock: rgba(248, 251, 252, .95);
    --bp-scrollbar: #a9bdc4;
    --bp-shadow: rgba(28, 55, 64, .16);
    --bp-radius: 3px;
    --bp-font: "Inter", "Arial Narrow", system-ui, sans-serif;
    --bp-mono: "SFMono-Regular", "Cascadia Mono", "Roboto Mono", monospace;
}

body.dark-mode {
    color-scheme: dark;
    --bp-void: #07121c;
    --bp-shell: #0c1b28;
    --bp-panel: #102331;
    --bp-panel-2: #142b3a;
    --bp-line: rgba(151, 209, 224, .14);
    --bp-line-strong: rgba(151, 209, 224, .28);
    --bp-ink: #d9edf1;
    --bp-muted: #7896a2;
    --bp-cyan: #8ce7f2;
    --bp-cyan-strong: #4fc5d8;
    --bp-accent-ink: #07121c;
    --bp-amber: #e3b66f;
    --bp-danger: #ef7e83;
    --bp-appbar-start: #102433;
    --bp-appbar-end: #0c1b28;
    --bp-mode-bg: #091721;
    --bp-button-text: #9eb4bd;
    --bp-slide-bg: #0a1823;
    --bp-toolbar-muted: #58747f;
    --bp-canvas: #0a1a26;
    --bp-grid-major: rgba(112, 180, 198, .105);
    --bp-grid-minor: rgba(112, 180, 198, .04);
    --bp-grid-glow: rgba(38, 100, 119, .13);
    --bp-model-label: rgba(140, 231, 242, .54);
    --bp-drawer: rgba(10, 25, 36, .985);
    --bp-item: #0d202d;
    --bp-item-hover: #143143;
    --bp-item-label: #93acb6;
    --bp-group-bg: #0b1c28;
    --bp-input-bg: #081720;
    --bp-dock: rgba(11, 28, 40, .94);
    --bp-scrollbar: #294758;
    --bp-shadow: rgba(0, 0, 0, .28);
}

body,
body.dark-mode {
    background: var(--bp-void);
    color: var(--bp-ink);
    font-family: var(--bp-font);
}

.app-container {
    background: var(--bp-void);
    isolation: isolate;
}

/* ── Application identity ─────────────────────────────────── */
.blueprint-appbar {
    height: 42px;
    min-height: 42px;
    display: grid;
    grid-template-columns: minmax(250px, 1fr) auto minmax(250px, 1fr);
    align-items: center;
    padding: 0 12px;
    background: linear-gradient(180deg, var(--bp-appbar-start) 0%, var(--bp-appbar-end) 100%);
    border-bottom: 1px solid var(--bp-line-strong);
    box-shadow: 0 1px 0 var(--bp-shadow);
    z-index: 1100;
    font-size: 11px;
    letter-spacing: .01em;
}

.blueprint-brand {
    display: inline-flex;
    align-items: center;
    width: max-content;
    gap: 8px;
    color: var(--bp-ink);
    text-decoration: none;
}

.blueprint-brand-mark {
    width: 24px;
    height: 24px;
    display: grid;
    place-items: center;
    color: var(--bp-accent-ink);
    background: var(--bp-cyan);
    clip-path: polygon(50% 0, 91% 24%, 91% 74%, 50% 100%, 9% 74%, 9% 24%);
    font-size: 15px;
}

.blueprint-brand-name {
    font-weight: 750;
    font-size: 13px;
    letter-spacing: .055em;
}

.blueprint-product-name {
    color: var(--bp-muted);
    padding-left: 8px;
    border-left: 1px solid var(--bp-line-strong);
}

.blueprint-document {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    min-width: 0;
}

.blueprint-document-state {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--bp-amber);
    box-shadow: 0 0 0 3px rgba(227, 182, 111, .1);
}

.blueprint-document-name {
    color: var(--bp-ink);
    font-weight: 550;
}

.blueprint-document-meta {
    color: var(--bp-muted);
    font: 9px/1 var(--bp-mono);
    text-transform: uppercase;
    letter-spacing: .08em;
}

.blueprint-app-actions {
    justify-self: end;
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--bp-muted);
}

.blueprint-coordinate-readout {
    color: var(--bp-cyan);
    font: 9px/1 var(--bp-mono);
    letter-spacing: .06em;
}

.blueprint-sync-state {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

/* ── Command strips ───────────────────────────────────────── */
.custom-bar,
body.dark-mode .custom-bar {
    min-height: 39px;
    background: var(--bp-shell);
    border-bottom: 1px solid var(--bp-line);
    box-shadow: none;
    overflow-x: auto;
    overflow-y: hidden;
}

.custom-bar.header-right {
    min-height: 41px;
}

.custom-bar > .header-right {
    justify-content: space-between;
    padding: 4px 10px !important;
}

.custom-bar .control-group-flex,
body.dark-mode .custom-bar .control-group-flex {
    min-height: 30px;
    margin: 3px;
    padding: 2px;
    gap: 1px;
    background: transparent;
    border: 0;
    border-radius: var(--bp-radius);
}

.custom-bar.header-right .control-group-flex {
    width: auto !important;
    max-width: 48%;
}

.mode-switcher,
body.dark-mode .mode-switcher {
    height: 30px;
    gap: 1px;
    padding: 2px;
    background: var(--bp-mode-bg);
    border: 1px solid var(--bp-line);
    border-radius: var(--bp-radius);
}

.mode-pill,
body.dark-mode .mode-pill {
    height: 24px;
    padding: 0 10px;
    border-radius: 2px;
    color: var(--bp-muted);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .035em;
    text-transform: uppercase;
}

.mode-pill:hover,
body.dark-mode .mode-pill:hover {
    color: var(--bp-ink);
    background: color-mix(in srgb, var(--bp-cyan) 9%, transparent);
}

.mode-pill.active,
body.dark-mode .mode-pill.active {
    color: var(--bp-accent-ink);
    background: var(--bp-cyan);
    box-shadow: none;
}

.btn,
body.dark-mode .btn {
    min-width: 32px;
    min-height: 30px;
    padding: 5px 8px;
    margin-right: 1px;
    gap: 5px;
    border: 1px solid transparent;
    border-radius: var(--bp-radius);
    background: transparent;
    color: var(--bp-button-text);
    font-size: 12px;
    box-shadow: none;
    backdrop-filter: none;
    transition: color .12s ease, background .12s ease, border-color .12s ease;
}

.btn:hover,
body.dark-mode .btn:hover {
    color: var(--bp-ink);
    background: color-mix(in srgb, var(--bp-cyan) 9%, transparent);
    border-color: var(--bp-line-strong);
    transform: none;
}

.btn.active,
body.dark-mode .btn.active,
.draw-tool-btn.active,
body.dark-mode .draw-tool-btn.active {
    color: var(--bp-cyan) !important;
    background: color-mix(in srgb, var(--bp-cyan) 15%, transparent) !important;
    border-color: color-mix(in srgb, var(--bp-cyan) 48%, transparent) !important;
    box-shadow: inset 0 -2px 0 var(--bp-cyan-strong) !important;
}

.btn:focus-visible,
.mode-pill:focus-visible,
.control-btn:focus-visible,
.palette-item:focus-visible {
    outline: 2px solid var(--bp-amber);
    outline-offset: 1px;
}

.custom-bar .accordion.slide-bar,
body.dark-mode .custom-bar .accordion.slide-bar {
    min-width: 58px;
    padding: 0 8px;
    background: var(--bp-slide-bg) !important;
    border: 0;
    border-right: 1px solid var(--bp-line);
    color: var(--bp-muted);
}

.custom-bar .accordion.slide-bar h3,
body.dark-mode .custom-bar .accordion.slide-bar h3 {
    margin: 0;
    color: inherit;
    font: 700 10px/1 var(--bp-mono);
    letter-spacing: .12em;
}

.custom-bar .accordion.active.slide-bar {
    color: var(--bp-cyan);
    box-shadow: inset 2px 0 0 var(--bp-cyan-strong);
}

.toolbar-sep {
    color: var(--bp-toolbar-muted);
    font: 700 10px/1 var(--bp-mono);
    letter-spacing: .1em;
    text-transform: uppercase;
    margin: 0 5px 0 9px;
}

/* The lower strip is an instrument rack. Existing title attributes carry the
   full action names; keeping the old visible labels makes the rack collide at
   ordinary laptop widths. Inputs retain their visible values. */
.custom-bar:not(.header-right) .btn .panel-content {
    display: none;
}

.custom-bar:not(.header-right) .btn {
    width: 32px;
    min-width: 32px;
    padding-inline: 6px;
    justify-content: center;
}

.custom-bar:not(.header-right) .btn iconify-icon {
    font-size: 16px;
}

.custom-bar:not(.header-right) #measureCalibrateBtn,
.custom-bar:not(.header-right) .export-domain-btn {
    width: auto;
}

.custom-bar:not(.header-right) .prop-label {
    gap: 3px !important;
}

.prop-label,
body.dark-mode .prop-label,
.switch-content,
body.dark-mode .switch-content {
    color: var(--bp-muted);
    font-size: 12px;
}

/* ── Drafting surface ─────────────────────────────────────── */
.main-layout {
    position: relative;
    border-top: 1px solid var(--bp-line-strong);
}

.svg-viewer,
body.dark-mode .svg-viewer {
    background-color: var(--bp-canvas);
    background-image:
        linear-gradient(var(--bp-grid-major) 1px, transparent 1px),
        linear-gradient(90deg, var(--bp-grid-major) 1px, transparent 1px),
        linear-gradient(var(--bp-grid-minor) 1px, transparent 1px),
        linear-gradient(90deg, var(--bp-grid-minor) 1px, transparent 1px),
        radial-gradient(circle at 50% 45%, var(--bp-grid-glow), transparent 62%);
    background-size: 100px 100px, 100px 100px, 20px 20px, 20px 20px, 100% 100%;
    background-position: -1px -1px, -1px -1px, -1px -1px, -1px -1px, 0 0;
}

.svg-viewer::before {
    content: "MODEL SPACE  /  1:1";
    position: absolute;
    top: 12px;
    left: 14px;
    z-index: 20;
    color: var(--bp-model-label);
    font: 8px/1 var(--bp-mono);
    letter-spacing: .11em;
    pointer-events: none;
}

.svg-viewer::after {
    content: "XY";
    position: absolute;
    left: 14px;
    bottom: 14px;
    width: 30px;
    height: 30px;
    display: grid;
    place-items: end start;
    padding: 0 0 2px 4px;
    color: var(--bp-cyan);
    border-left: 1px solid var(--bp-cyan-strong);
    border-bottom: 1px solid var(--bp-cyan-strong);
    font: 7px/1 var(--bp-mono);
    opacity: .7;
    pointer-events: none;
}

#snap-grid-minor {
    stroke: var(--bp-grid-minor) !important;
}

#snap-grid-major {
    stroke: var(--bp-grid-major) !important;
}

/* ── Left symbol library ──────────────────────────────────── */
#symbolPalettePanel,
body:not(.dark-mode) #symbolPalettePanel {
    top: 42px;
    bottom: 0;
    width: 214px;
    background: var(--bp-drawer);
    border-right: 1px solid var(--bp-line-strong);
    backdrop-filter: blur(12px);
    box-shadow: 12px 0 35px var(--bp-shadow);
}

#symbolPalettePanel.open + #paletteToggleBtn,
#paletteToggleBtn.shifted {
    left: 214px;
}

.palette-header {
    min-height: 42px;
    padding: 0 10px;
    background: var(--bp-panel);
    border-bottom: 1px solid var(--bp-line);
}

.palette-header h4 {
    color: var(--bp-ink);
    font: 700 12px/1 var(--bp-mono);
    letter-spacing: .1em;
    text-transform: uppercase;
}

.palette-close-btn {
    color: var(--bp-muted);
}

#symbolPalette {
    padding: 7px;
}

.palette-group-label,
body:not(.dark-mode) .palette-group-label {
    color: var(--bp-muted);
    padding: 11px 5px 5px;
    font: 700 11px/1 var(--bp-mono);
    letter-spacing: .13em;
    border-bottom: 1px solid var(--bp-line);
    margin-bottom: 6px;
}

.palette-row {
    gap: 5px;
}

.palette-item,
body:not(.dark-mode) .palette-item {
    width: 96px;
    padding: 7px 5px 5px;
    border-radius: var(--bp-radius);
    border: 1px solid var(--bp-line);
    background: var(--bp-item);
}

.palette-item:hover,
body:not(.dark-mode) .palette-item:hover {
    background: var(--bp-item-hover);
    border-color: color-mix(in srgb, var(--bp-cyan) 46%, transparent);
    transform: none;
}

.palette-icon svg {
    filter: saturate(.72) brightness(1.32);
}

.palette-label,
body:not(.dark-mode) .palette-label {
    color: var(--bp-item-label);
    font: 11px/1.25 var(--bp-mono);
}

#paletteToggleBtn {
    top: 50%;
    padding: 11px 6px;
    color: var(--bp-cyan);
    background: var(--bp-panel);
    border-color: var(--bp-line-strong);
    border-radius: 0 var(--bp-radius) var(--bp-radius) 0;
    box-shadow: 4px 0 14px var(--bp-shadow);
}

/* ── Right inspector ──────────────────────────────────────── */
.side-panel,
body.dark-mode .side-panel {
    top: 42px;
    height: calc(100vh - 42px);
    width: 286px;
    right: -286px;
    color: var(--bp-ink);
    background: var(--bp-drawer);
    border-left: 1px solid var(--bp-line-strong);
    box-shadow: -16px 0 38px var(--bp-shadow);
    backdrop-filter: blur(14px);
}

.side-panel.open,
body.dark-mode .side-panel.open {
    right: 0;
}

.side-panel-close,
body.dark-mode .side-panel-close {
    top: 9px;
    right: 9px;
    width: 24px;
    height: 24px;
    border-radius: var(--bp-radius);
    background: transparent;
    color: var(--bp-muted);
}

.side-panel-tabs,
body.dark-mode .side-panel-tabs {
    margin-top: 42px !important;
    padding: 0 8px;
    gap: 2px;
    border-bottom: 1px solid var(--bp-line);
}

.side-tab,
body.dark-mode .side-tab {
    padding: 8px 10px;
    border-radius: var(--bp-radius) var(--bp-radius) 0 0;
    color: var(--bp-muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .07em;
}

.side-tab.active,
body.dark-mode .side-tab.active {
    color: var(--bp-cyan);
    background: color-mix(in srgb, var(--bp-cyan) 8%, transparent);
    border-bottom-color: var(--bp-cyan);
}

.control-group,
body.dark-mode .control-group {
    margin: 8px;
    padding: 9px;
    border-radius: var(--bp-radius);
    background: var(--bp-group-bg);
    border: 1px solid var(--bp-line);
}

.control-group h3,
body.dark-mode .control-group h3,
.prop-section-title,
body.dark-mode .prop-section-title {
    color: var(--bp-muted);
    font: 700 12px/1 var(--bp-mono);
    text-transform: uppercase;
    letter-spacing: .11em;
}

.layers-tree {
    font: 12px/1.45 var(--bp-mono);
}

#layersPanel {
    border-color: var(--bp-line) !important;
    border-radius: var(--bp-radius) !important;
}

.prop-input,
.prop-select,
.prop-textarea,
body.dark-mode .prop-input,
body.dark-mode .prop-select,
body.dark-mode .prop-textarea {
    border-radius: var(--bp-radius);
    background: var(--bp-input-bg);
    border-color: var(--bp-line-strong);
    color: var(--bp-ink);
    font-family: var(--bp-mono);
}

/* ── Bottom instrument dock ───────────────────────────────── */
.bottom-controls,
body.dark-mode .bottom-controls {
    left: 50%;
    right: auto;
    bottom: 9px;
    width: auto;
    max-width: calc(100vw - 48px);
    transform: translateX(-50%);
    padding: 3px;
    gap: 1px;
    border: 1px solid var(--bp-line-strong);
    border-radius: var(--bp-radius);
    background: var(--bp-dock);
    box-shadow: 0 8px 28px var(--bp-shadow);
    backdrop-filter: blur(12px);
}

.control-btn,
body.dark-mode .control-btn {
    min-width: 30px;
    min-height: 30px;
    padding: 4px 6px;
    border: 1px solid transparent;
    border-radius: 2px;
    color: var(--bp-muted);
}

.control-btn:hover,
body.dark-mode .control-btn:hover,
.control-btn.active,
body.dark-mode .control-btn.active {
    color: var(--bp-cyan);
    background: color-mix(in srgb, var(--bp-cyan) 10%, transparent);
    border-color: var(--bp-line-strong);
}

.control-btn .icon,
.control-btn .icon iconify-icon {
    font-size: 16px !important;
}

.timeline-panel,
body.dark-mode .timeline-panel {
    background: var(--bp-shell);
    border-top-color: var(--bp-line);
}

/* Scrollbars are part of the instrument UI, not browser chrome. */
#symbolPalette::-webkit-scrollbar,
.side-panel::-webkit-scrollbar,
.custom-bar *::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

#symbolPalette::-webkit-scrollbar-thumb,
.side-panel::-webkit-scrollbar-thumb,
.custom-bar *::-webkit-scrollbar-thumb {
    background: var(--bp-scrollbar);
    border-radius: 0;
}

@media (max-width: 900px) {
    .blueprint-appbar {
        grid-template-columns: 1fr auto;
    }

    .blueprint-document {
        display: none;
    }

    .blueprint-coordinate-readout,
    .custom-bar.header-right .panel-content {
        display: none;
    }

    .custom-bar.header-right .control-group-flex {
        max-width: 42%;
    }
}

@media (max-width: 640px) {
    .blueprint-appbar {
        height: 38px;
        min-height: 38px;
        padding: 0 8px;
    }

    .blueprint-product-name,
    .blueprint-sync-state {
        display: none;
    }

    .custom-bar.header-right {
        min-height: 38px;
    }

    .custom-bar > .header-right {
        padding: 3px 6px !important;
    }

    .custom-bar.header-right .control-group-flex {
        max-width: 58%;
    }

    #symbolPalettePanel {
        top: 38px;
        width: min(78vw, 260px);
    }

    #paletteToggleBtn.shifted {
        left: min(78vw, 260px);
    }

    .side-panel,
    body.dark-mode .side-panel {
        top: 38px;
        width: min(86vw, 320px);
        right: min(-86vw, -320px);
        height: calc(100vh - 38px);
    }

    .side-panel.open,
    body.dark-mode .side-panel.open {
        right: 0;
    }

    .bottom-controls,
    body.dark-mode .bottom-controls {
        max-width: calc(100vw - 16px);
        overflow-x: auto;
    }
}

@media (prefers-reduced-motion: reduce) {
    #symbolPalettePanel,
    #paletteToggleBtn,
    .side-panel,
    .btn,
    .control-btn {
        transition: none !important;
    }
}