/* speKthem — Professional Technical Design System (light) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Syne:wght@700;800&family=DM+Mono:wght@400&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    /* Primary backgrounds */
    --bg:              #f8f9fa;
    --bg-sidebar:      #e9ecef;
    --bg-panel:        #ffffff;
    --bg-panel-alt:    #f1f3f5;
    --bg-hover:        #f1f3f5;
    --bg-header:       #1a1d23;

    /* Rose brand accent (primary) */
    --accent:          #E5486B;
    --accent-hover:    #cf3a5d;
    --accent-soft:     rgba(229,72,107,0.08);
    --accent-2:        #34d399;
    --accent-3:        #f5a623;
    --accent-4:        rgba(229,72,107,0.25);

    /* Technical blue (tool/CAD interactions) */
    --tech-blue:       #4A90E2;
    --tech-blue-hover: #3a7bc8;
    --tech-blue-soft:  rgba(74,144,226,0.06);

    /* Grid */
    --grid-color:      #b8c5d1;
    --grid-major:      #9ca8b4;

    /* Text hierarchy */
    --text:            #212529;
    --text-mid:        #495057;
    --text-dim:        #6c757d;
    --text-technical:  #343a40;

    /* Borders */
    --border:          #dee2e6;
    --border-mid:      #ced4da;
    --border-strong:   #adb5bd;

    /* Shadows */
    --shadow:          rgba(33,37,41,0.12);
    --shadow-minimal:  0 1px 2px rgba(33,37,41,0.08);
    --shadow-medium:   0 2px 8px rgba(33,37,41,0.12);
    --shadow-strong:   0 4px 16px rgba(33,37,41,0.15);

    /* Typography */
    --font-mono:       'JetBrains Mono', 'DM Mono', ui-monospace, monospace;

    --toolbar-h: 48px;
    --sidebar-w: 260px;
    --inspector-w: 48px;
}

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

html, body {
    width: 100%; height: 100%;
    overflow: hidden;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
}

/* ── Toolbar (dark header preserved) ── */
#toolbar {
    position: fixed; top: 0; left: 0; right: 0;
    height: var(--toolbar-h);
    background: var(--bg-header);
    border-bottom: 1px solid #2b2f36;
    display: flex; align-items: center;
    padding: 0 16px;
    gap: 8px;
    z-index: 100;
    overflow-x: auto;
    overflow-y: hidden;
    flex-wrap: nowrap;
}

#toolbar .brand {
    font-family: 'Syne', sans-serif;
    font-size: 20px;
    font-weight: 800;
    color: #ffffff;
    margin-right: 12px;
    letter-spacing: -0.5px;
}
#toolbar .brand .k {
    color: var(--accent);
    font-size: 24px;
}

#project-name {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.14);
    color: #ffffff;
    padding: 6px 12px;
    border-radius: 8px;
    font: 500 13px 'Inter', sans-serif;
    width: 180px;
    transition: border-color 0.15s;
}
#project-name:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(229,72,107,0.22);
}

.toolbar-sep {
    width: 1px; height: 24px;
    background: rgba(255,255,255,0.12);
    margin: 0 4px;
}

.toolbar-hint {
    margin-left: 12px;
    padding: 4px 10px;
    font: 500 10px var(--font-mono);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #adb5bd;
    display: flex; align-items: center; gap: 5px;
    border: 1px solid #495057;
    border-radius: 4px;
    white-space: nowrap;
    flex-shrink: 0;
}
.toolbar-hint .k {
    display: inline-block;
    padding: 1px 5px;
    background: #343a40;
    color: #ffffff;
    border-radius: 3px;
    font-weight: 600;
    letter-spacing: 0.05em;
}
.toolbar-hint .sep { color: #495057; }
@media (max-width: 1200px) { .toolbar-hint { display: none; } }

/* ── Project menu ── */
.project-menu {
    display: flex;
    align-items: center;
    gap: 4px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 10px;
    padding: 3px 4px 3px 10px;
    flex-shrink: 0;
    white-space: nowrap;
}

.project-name-input {
    background: transparent;
    border: none;
    color: #ffffff;
    font: 600 14px 'Inter', sans-serif;
    width: 160px;
    outline: none;
}
.project-name-input::placeholder { color: rgba(255,255,255,0.4); }
.project-name-input:focus {
    color: #ffffff;
}

.project-menu .toolbar-btn {
    padding: 4px 10px;
    font-size: 11px;
    border-radius: 6px;
}

/* Button variants */
.toolbar-btn, .toolbar-select {
    font: 500 13px 'Inter', sans-serif;
    border-radius: 8px;
    padding: 7px 14px;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}

.toolbar-btn.primary, .toolbar-select.primary {
    background: var(--accent);
    color: #fff;
    border: 1px solid var(--accent);
}
.toolbar-btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); transform: translateY(-1px); }

.toolbar-btn.secondary, .toolbar-select.secondary {
    background: var(--tech-blue);
    color: #fff;
    border: 1px solid var(--tech-blue);
}
.toolbar-btn.secondary:hover, .toolbar-select.secondary:hover {
    background: var(--tech-blue-hover);
    border-color: var(--tech-blue-hover);
}

#toolbar .toolbar-btn.ghost, #toolbar .toolbar-select.ghost {
    background: transparent;
    color: #adb5bd;
    border: 1px solid #495057;
}
#toolbar .toolbar-btn.ghost:hover, #toolbar .toolbar-select.ghost:hover {
    background: #343a40;
    color: #ffffff;
    border-color: #6c757d;
}

.toolbar-btn.ghost, .toolbar-select.ghost {
    background: transparent;
    color: var(--text-mid);
    border: 1px solid var(--border-mid);
}
.toolbar-btn.ghost:hover, .toolbar-select.ghost:hover {
    background: var(--bg-hover);
    color: var(--text);
    border-color: var(--border-strong);
}

.toolbar-btn.danger {
    background: #ffffff;
    color: #dc2626;
    border: 1px solid rgba(220,38,38,0.4);
}
.toolbar-btn.danger:hover {
    background: rgba(220,38,38,0.08);
    border-color: #dc2626;
}

.toolbar-right {
    margin-left: auto;
    display: flex; align-items: center; gap: 8px;
}

/* ── Layout ── */
#app-container {
    position: fixed;
    top: var(--toolbar-h);
    left: 0; right: 0; bottom: 0;
    display: flex;
}

/* ── Sidebar ── */
#sidebar {
    width: var(--sidebar-w);
    min-width: var(--sidebar-w);
    background: var(--bg-sidebar);
    border-right: 2px solid var(--border-mid);
    display: flex; flex-direction: column;
    overflow: hidden;
}

.sidebar-section {
    border-bottom: 1px solid var(--border);
}

#guest-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
#guest-panel .sidebar-section-body {
    flex: 1;
    overflow-y: auto;
}

.sidebar-section-header {
    padding: 10px 14px;
    font: 600 10px var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-technical);
    display: flex; align-items: center; justify-content: space-between;
    cursor: pointer;
    user-select: none;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
}
.sidebar-section-header:hover { color: var(--accent); }

.sidebar-section-header .badge {
    background: var(--tech-blue);
    color: white;
    font: 600 10px var(--font-mono);
    padding: 3px 8px;
    border-radius: 2px;
    min-width: 24px;
    text-align: center;
    letter-spacing: 0.02em;
    border: 1px solid rgba(74,144,226,0.3);
}

.sidebar-section-body {
    padding: 4px 12px 12px;
}
.sidebar-section-body.collapsed { display: none; }

/* Table list in sidebar */
.table-list-item {
    display: flex; align-items: center; justify-content: space-between;
    padding: 8px 12px;
    border-radius: 3px;
    cursor: pointer;
    font: 500 13px 'Inter', sans-serif;
    color: var(--text);
    margin-bottom: 4px;
    transition: all 0.1s;
    border: 1px solid var(--border-mid);
    background: var(--bg-panel);
}
.table-list-item:hover {
    background: var(--tech-blue-soft);
    border-color: var(--tech-blue);
}
.table-list-item.selected {
    background: var(--accent-soft);
    border-color: var(--accent);
    box-shadow: inset 3px 0 0 var(--accent);
}

.table-list-item .seat-count {
    color: var(--text-dim);
    font: 500 10px var(--font-mono);
    letter-spacing: 0.02em;
}

/* Guest list items */
#unassigned-list {
    padding: 4px 12px;
}

.guest-chip-sidebar {
    display: flex; align-items: center;
    background: var(--bg-panel);
    padding: 6px 10px;
    margin-bottom: 4px;
    border-radius: 3px;
    font: 400 13px 'Inter', sans-serif;
    color: var(--text);
    border: 1px solid var(--border-mid);
    cursor: grab;
    user-select: none;
    transition: all 0.1s;
}
.guest-chip-sidebar:hover {
    background: var(--tech-blue-soft);
    border-color: var(--tech-blue);
    transform: translateY(-1px);
    box-shadow: var(--shadow-minimal);
}
.guest-chip-sidebar.vip {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: var(--text);
}
.guest-chip-sidebar .guest-name { flex: 1; }
.guest-chip-sidebar .guest-group {
    color: var(--text-dim);
    font: 400 10px var(--font-mono);
    letter-spacing: 0.03em;
    margin-left: 8px;
    text-transform: uppercase;
}
.guest-chip-sidebar.dragging { opacity: 0.3; }

.stub-label {
    color: var(--text-dim);
    font-size: 12px;
    font-style: italic;
    padding: 8px 4px;
}

/* ── Canvas area ── */
#canvas-container {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: var(--bg);
}
#canvas-container canvas {
    display: block;
    width: 100%; height: 100%;
}

/* ── Inspector panel ── */
#inspector {
    width: var(--inspector-w);
    min-width: var(--inspector-w);
    background: var(--bg-panel);
    border-left: 1px solid var(--border);
    overflow-y: auto;
    padding: 16px;
    display: block;
}

#elements-panel {
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.inspector-header {
    font: 600 11px var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-technical);
    margin-bottom: 12px;
    padding: 4px 8px;
    background: var(--bg-panel-alt);
    border: 1px solid var(--border);
    border-radius: 2px;
}

.inspector-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-mid);
    border-radius: 3px;
    padding: 10px 12px;
    margin-bottom: 8px;
}

.inspector-card-header {
    font: 600 10px var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-technical);
    margin-bottom: 8px;
}

.inspector-field {
    display: flex; align-items: center; justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid var(--border);
}
.inspector-field:last-child { border-bottom: none; }

.inspector-field label {
    font: 500 10px var(--font-mono);
    color: var(--text-technical);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.inspector-field input {
    background: var(--bg-panel);
    border: 1px solid var(--border-mid);
    color: var(--text);
    padding: 4px 10px;
    border-radius: 3px;
    font: 400 12px var(--font-mono);
    width: 120px;
    text-align: right;
}
.inspector-field input:focus {
    outline: none;
    border-color: var(--tech-blue);
    box-shadow: 0 0 0 2px rgba(74,144,226,0.15);
}

.inspector-field span {
    font: 400 12px var(--font-mono);
    color: var(--text);
}

.inspector-field .color-swatch {
    width: 28px; height: 28px;
    border-radius: 3px;
    border: 1px solid var(--border-strong);
    cursor: pointer;
    transition: transform 0.1s;
}
.inspector-field .color-swatch:hover { transform: scale(1.1); }

.inspector-seat-item {
    display: flex; align-items: center;
    padding: 5px 0;
    font: 400 13px 'Inter', sans-serif;
    border-bottom: 1px solid var(--border);
}
.inspector-seat-item:last-child { border-bottom: none; }

.inspector-seat-item .seat-num {
    font: 500 11px var(--font-mono);
    color: var(--text-dim);
    width: 28px;
}
.inspector-seat-item .seat-guest { flex: 1; color: var(--text); }
.inspector-seat-item .seat-guest.empty { color: var(--text-dim); font-style: italic; }

.inspector-btn-row {
    margin-top: 12px;
}

/* ── Seat chips on canvas ── */
.seat-chip {
    position: absolute;
    transform: translate(-50%, -100%);
    background: rgba(229,72,107,0.72);
    color: #ffffff;
    padding: 3px 10px;
    border-radius: 3px;
    font: 500 10px var(--font-mono);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    white-space: nowrap;
    cursor: grab;
    user-select: none;
    border: 1px solid rgba(229,72,107,0.55);
    box-shadow: var(--shadow-minimal);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    pointer-events: auto;
    transition: box-shadow 0.1s, background 0.1s;
}
.seat-chip:hover {
    box-shadow: var(--shadow-medium);
    background: rgba(229,72,107,0.85);
}
.seat-chip.vip {
    background: rgba(74,144,226,0.72);
    border-color: rgba(74,144,226,0.55);
    color: #ffffff;
}
.seat-chip.vip:hover {
    background: rgba(74,144,226,0.85);
}
.seat-chip.dragging {
    background: var(--accent-hover);
    color: white;
    border-color: var(--accent-hover);
    opacity: 0.9;
    pointer-events: none;
    z-index: 10000;
}

/* ── Welcome / Help Modal ── */
.welcome-card {
    width: 480px;
}

.welcome-brand {
    font: 800 28px 'Syne', sans-serif;
    color: var(--text);
    text-align: center;
    margin-bottom: 2px;
    letter-spacing: -0.5px;
}
.welcome-brand .k { color: var(--accent); font-size: 34px; }

/* Welcome modal uses light card surfaces — override dark-inherited bits */
.welcome-card .step-title { color: var(--text); }
.welcome-card .step-desc { color: var(--text-mid); }

.welcome-tagline {
    font: 400 14px 'Inter', sans-serif;
    color: var(--text-mid);
    text-align: center;
    margin-bottom: 28px;
}

.welcome-steps {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}

.welcome-step {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.step-num {
    flex-shrink: 0;
    width: 28px; height: 28px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    font: 700 13px 'Syne', sans-serif;
    display: flex; align-items: center; justify-content: center;
    margin-top: 1px;
}

.step-body { flex: 1; }

.step-title {
    font: 600 14px 'Inter', sans-serif;
    color: var(--text);
    margin-bottom: 2px;
}

.step-desc {
    font: 400 12.5px/1.6 'Inter', sans-serif;
    color: var(--text-mid);
}

.step-desc strong {
    color: var(--accent);
    font-weight: 600;
}

#btn-help {
    width: 32px; height: 32px;
    padding: 0;
    font: 700 16px 'Syne', sans-serif;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: transparent;
    color: #adb5bd;
    border: 1px solid #495057;
}
#btn-help:hover { background: #343a40; color: #ffffff; border-color: #6c757d; }

/* ── Quick Layout Modal ── */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 500;
}

.modal-card {
    background: var(--bg-panel);
    border: 1px solid var(--border-mid);
    border-radius: 8px;
    padding: 36px 32px 28px;
    width: 420px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-strong);
    color: var(--text);
}

.modal-header {
    font: 800 22px 'Syne', sans-serif;
    color: var(--text);
    margin-bottom: 4px;
}

.modal-subtitle {
    font: 400 13px 'Inter', sans-serif;
    color: var(--text-mid);
    margin-bottom: 24px;
    line-height: 1.5;
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}

.modal-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.modal-field label {
    font: 500 11px 'Inter', sans-serif;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-mid);
}

.modal-field input,
.modal-field select {
    background: var(--bg-panel);
    border: 1px solid var(--border-mid);
    color: var(--text);
    padding: 10px 14px;
    border-radius: 4px;
    font: 500 15px 'Inter', sans-serif;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.modal-field input:focus,
.modal-field select:focus {
    border-color: var(--tech-blue);
    box-shadow: 0 0 0 2px rgba(74,144,226,0.15);
}

.modal-field-row {
    display: flex;
    gap: 12px;
}

.input-with-unit {
    position: relative;
    display: flex;
    align-items: center;
}

.input-with-unit input {
    width: 100%;
    padding-right: 36px;
}

.input-with-unit .unit {
    position: absolute;
    right: 12px;
    font: 400 12px 'Inter', sans-serif;
    color: var(--text-dim);
    pointer-events: none;
}

.layout-preview-text {
    font: 500 12px var(--font-mono);
    letter-spacing: 0.02em;
    color: var(--accent);
    padding: 8px 12px;
    background: var(--accent-soft);
    border: 1px solid rgba(229,72,107,0.25);
    border-radius: 3px;
    text-align: center;
}

.layout-warning {
    font: 500 12px 'Inter', sans-serif;
    color: #b91c1c;
    padding: 8px 14px;
    background: #fef2f2;
    border: 1px solid rgba(220,38,38,0.25);
    border-radius: 3px;
    text-align: center;
}

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.modal-actions .toolbar-btn {
    padding: 10px 20px;
    font-size: 14px;
}

/* ── Stats bar ── */
#stats-bar {
    position: fixed;
    bottom: 0; left: var(--sidebar-w); right: 0;
    height: 28px;
    background: var(--bg-header);
    border-top: 1px solid #2b2f36;
    display: flex; align-items: center;
    padding: 0 16px;
    font: 500 10px var(--font-mono);
    letter-spacing: 0.04em;
    color: #adb5bd;
    gap: 20px;
    z-index: 100;
    text-transform: uppercase;
}

/* ── Hidden file input ── */
#csv-file-input, #csv-refresh-input, #project-file-input, #floorplan-file-input, #review-file-input { display: none; }
#canvas-container.calibrating-mode canvas { cursor: crosshair; }

/* ── Color picker popup ── */
.color-picker-popup {
    position: absolute;
    background: var(--bg-panel);
    border: 1px solid var(--border-mid);
    border-radius: 4px;
    padding: 10px;
    display: grid;
    grid-template-columns: repeat(4, 32px);
    gap: 6px;
    z-index: 200;
    box-shadow: var(--shadow-strong);
}
.color-picker-popup .swatch {
    width: 32px; height: 32px;
    border-radius: 3px;
    cursor: pointer;
    border: 1px solid var(--border-mid);
    transition: all 0.1s;
}
.color-picker-popup .swatch:hover { border-color: var(--accent); transform: scale(1.1); }
.color-picker-popup .swatch.active { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ── Drag ghost ── */
.sidebar-drag-ghost {
    position: fixed;
    background: var(--accent);
    color: white;
    padding: 4px 12px;
    border-radius: 3px;
    font: 500 11px var(--font-mono);
    letter-spacing: 0.03em;
    pointer-events: none;
    z-index: 10000;
    white-space: nowrap;
    box-shadow: var(--shadow-strong);
}

/* ── Room Drawing ── */
#canvas-container.drawing-mode canvas { cursor: crosshair; }

/* ── Element groups (collapsible) ── */
.element-group {
    border: 1px solid var(--border);
    border-radius: 3px;
    margin-bottom: 6px;
    overflow: hidden;
}
.element-group-header {
    padding: 8px 10px;
    font: 600 10px var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-technical);
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.1s;
}
.element-group-header:hover { background: var(--bg-hover); color: var(--accent); }
.element-group-header::after {
    content: '▾';
    font-size: 10px;
    color: var(--text-dim);
    transition: transform 0.15s;
}
.element-group-header.collapsed::after {
    transform: rotate(-90deg);
}
.element-group-body {
    padding: 6px 8px 8px;
}
.element-group-body.collapsed {
    display: none;
}

/* ── Annotation button grid ── */
.annotation-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
}
.ann-btn {
    background: var(--bg-panel);
    border: 1px solid var(--border-mid);
    border-radius: 3px;
    padding: 6px 2px;
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
    text-align: center;
    transition: all 0.1s;
    color: var(--text-mid);
}
.ann-btn:hover {
    background: var(--tech-blue-soft);
    border-color: var(--tech-blue);
    color: var(--tech-blue);
}

/* ── Surface add rows & list ── */
.surface-add-row {
    display: flex;
    gap: 6px;
    margin-bottom: 4px;
    flex-wrap: wrap;
}
.surface-add-row .toolbar-btn {
    padding: 5px 10px;
    font-size: 11px;
    flex: 1;
    text-align: center;
}

.surface-list-item {
    display: flex; align-items: center; justify-content: space-between;
    padding: 8px 10px;
    border-radius: 3px;
    cursor: pointer;
    font: 400 13px 'Inter', sans-serif;
    color: var(--text);
    margin-bottom: 3px;
    transition: background 0.1s;
    border: 1px solid transparent;
}
.surface-list-item:hover { background: var(--tech-blue-soft); border-color: var(--tech-blue); }
.surface-list-item.selected { background: var(--accent-soft); border-color: var(--accent); box-shadow: inset 3px 0 0 var(--accent); }
.surface-list-item .surface-type {
    color: var(--text-dim);
    font: 400 10px var(--font-mono);
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

/* ── Responsive ── */

/* ── Progressive toolbar squeeze so the right side stays visible ── */
@media (max-width: 1600px) {
    .toolbar-hint { display: none; }
    #project-id-badge { display: none !important; }
}

@media (max-width: 1500px) {
    #toolbar { gap: 6px; }
    /* Icon-only compact buttons: drop the word under the glyph */
    .toolbar-btn-compact span { display: none; }
    .toolbar-btn-compact { font-size: 16px; line-height: 1; padding: 6px 8px; }
    .toolbar-btn-compact br { display: none; }
    #btn-import-plan-toolbar { font-size: 15px; }
}

@media (max-width: 1300px) {
    /* Hide redundant project buttons — same actions live inside the "?" / help / future menu */
    #btn-new-project, #btn-save-project, #btn-open-project { display: none; }
    .toolbar-sep { margin: 0 2px; }
    #btn-review-changes { font-size: 11px !important; padding: 4px 8px !important; }
    #btn-add-collaborator { font-size: 11px !important; padding: 4px 8px !important; }
}

@media (max-width: 1200px) {
    :root {
        --sidebar-w: 200px;
        --toolbar-h: 42px;
    }
    #toolbar { padding: 0 8px; gap: 4px; }
    .toolbar-btn, .toolbar-select { padding: 5px 10px; font-size: 12px; }
    #project-name.project-name-input { width: 100px; font-size: 12px; padding: 5px 8px; }
    .project-menu { padding: 3px 4px; }
    .toolbar-right { gap: 4px; }
    #btn-add-collaborator { font-size: 11px !important; padding: 4px 8px !important; }
    #btn-review-changes { font-size: 11px !important; padding: 4px 6px !important; }
    #btn-quick-layout, #btn-draw-room { padding: 5px 10px; }
    .sidebar-section-header { padding: 8px 12px; font-size: 10px; }
    .sidebar-section-body { padding: 3px 8px 8px; }
    .inspector-header { font-size: 13px; }
    .inspector-field label { font-size: 10px; }
    .inspector-field input { width: 100px; font-size: 12px; }
    .element-group-header { padding: 6px 8px; font-size: 10px; }
    .element-group-body { padding: 4px 6px 6px; }
    .annotation-grid { grid-template-columns: repeat(4, 1fr); gap: 3px; }
    .ann-btn { padding: 4px 1px; font-size: 14px; }
}

@media (max-width: 900px) {
    :root {
        --sidebar-w: 0px;
        --toolbar-h: 38px;
    }
    #sidebar { display: none; }
    #toolbar { padding: 0 6px; gap: 3px; }
    #toolbar .brand { font-size: 15px; margin-right: 6px; }
    .toolbar-btn, .toolbar-select { padding: 4px 8px; font-size: 11px; border-radius: 6px; }
    .project-menu { padding: 2px 3px 2px 6px; }
    .project-name-input { width: 90px; font-size: 12px; }
    .toolbar-sep { display: none; }
    #stats-bar { left: 0; font-size: 10px; gap: 12px; padding: 0 8px; }
    .modal-card { width: 90vw; padding: 24px 20px 20px; }
    .modal-header { font-size: 18px; }
    .welcome-card { width: 90vw; }
}

@media (max-width: 700px) {
    :root { --toolbar-h: 36px; }
    #inspector { display: none !important; }
    #toolbar .brand .k { font-size: 18px; }
    .toolbar-btn.ghost, .toolbar-select.ghost { display: none; }
    .toolbar-right { gap: 4px; }
}

@media (max-height: 600px) {
    :root { --toolbar-h: 36px; }
    #stats-bar { height: 22px; font-size: 9px; }
}

/* === UI REDESIGN ADDITIONS === */

#inspector {
    position: fixed;
    top: var(--toolbar-h);
    right: 48px;
    width: 260px;
    min-width: 0;
    max-height: calc(100vh - var(--toolbar-h) - 28px);
    overflow-y: auto;
    background: var(--bg-panel);
    border: 1px solid var(--border-mid);
    border-top: none;
    border-right: none;
    border-radius: 0 0 0 4px;
    box-shadow: var(--shadow-strong);
    z-index: 150;
    padding: 12px;
    display: none;
}
#inspector.visible { display: block; }

#icon-rail {
    position: fixed;
    top: var(--toolbar-h);
    right: 0;
    width: 48px;
    bottom: 28px;
    background: var(--bg-panel-alt);
    border-left: 2px solid var(--border-mid);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px 0;
    gap: 2px;
    z-index: 160;
}

.rail-icon {
    width: 42px;
    height: 42px;
    background: var(--bg-panel);
    border: 1px solid var(--border-mid);
    border-radius: 3px;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary, var(--text-mid));
    transition: all 0.15s;
    padding: 0;
}
.rail-icon svg { width: 24px; height: 24px; }
.rail-icon:hover {
    background: var(--tech-blue-soft);
    border-color: var(--tech-blue);
    color: var(--tech-blue);
}
.rail-icon.active {
    background: var(--tech-blue);
    border-color: var(--tech-blue);
    color: #ffffff;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.2), 0 2px 4px rgba(74,144,226,0.3);
}

.rail-panel {
    position: fixed;
    top: var(--toolbar-h);
    right: 48px;
    width: 220px;
    background: var(--bg-panel);
    border: 2px solid var(--border-mid);
    border-top: none;
    border-right: none;
    border-radius: 0 0 0 4px;
    box-shadow: var(--shadow-strong);
    padding: 12px 14px;
    z-index: 155;
}

.rail-panel-title {
    font: 600 11px var(--font-mono);
    color: var(--text-technical);
    margin-bottom: 10px;
    padding: 4px 8px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background: var(--bg-panel-alt);
    border: 1px solid var(--border);
    border-radius: 2px;
}

#toolbar .toolbar-icon-btn {
    width: 34px;
    height: 34px;
    background: transparent;
    border: 1px solid #495057;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #adb5bd;
    transition: all 0.1s;
    flex-shrink: 0;
}
#toolbar .toolbar-icon-btn:hover {
    background: #343a40;
    color: #ffffff;
    border-color: #6c757d;
}

.toolbar-icon-btn {
    width: 34px;
    height: 34px;
    background: transparent;
    border: 1px solid var(--border-mid);
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-mid);
    transition: all 0.1s;
    flex-shrink: 0;
}
.toolbar-icon-btn:hover {
    background: var(--bg-hover);
    color: var(--text);
    border-color: var(--border-strong);
}

#toolbar .toolbar-btn-compact {
    background: transparent;
    border: 1px solid #495057;
    border-radius: 6px;
    padding: 2px 8px;
    font: 500 10px 'Inter', sans-serif;
    cursor: pointer;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #adb5bd;
    transition: all 0.1s;
    flex-shrink: 0;
    line-height: 1.2;
    height: 36px;
    white-space: nowrap;
}
#toolbar .toolbar-btn-compact span { font-size: 9px; }
#toolbar .toolbar-btn-compact:hover {
    background: #343a40;
    color: #ffffff;
    border-color: #6c757d;
}

.toolbar-btn-compact {
    background: var(--bg-panel);
    border: 1px solid var(--border-mid);
    border-radius: 3px;
    padding: 2px 8px;
    font: 500 10px 'Inter', sans-serif;
    cursor: pointer;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-mid);
    transition: all 0.1s;
    flex-shrink: 0;
    line-height: 1.2;
    height: 36px;
    white-space: nowrap;
}
.toolbar-btn-compact span { font-size: 9px; }
.toolbar-btn-compact:hover {
    background: var(--tech-blue-soft);
    color: var(--tech-blue);
    border-color: var(--tech-blue);
}

#canvas-view-pill {
    position: fixed;
    bottom: 36px;
    right: 56px;
    background: rgba(255,255,255,0.92);
    color: var(--text-technical);
    border: 1px solid var(--border-strong);
    padding: 4px 12px;
    border-radius: 3px;
    font: 600 10px var(--font-mono);
    cursor: pointer;
    z-index: 100;
    letter-spacing: 0.1em;
    backdrop-filter: blur(8px);
    transition: all 0.15s;
    box-shadow: var(--shadow-minimal);
}
#canvas-view-pill:hover {
    background: #ffffff;
    color: var(--tech-blue);
    border-color: var(--tech-blue);
}

#stats-bar {
    right: 48px;
}