:root {
            --embc-bg: #f8fafc;
            --embc-card: #ffffff;
            --embc-surface: #f1f5f9;
            --embc-text: #0f172a;
            --embc-muted: #64748b;
            --embc-border: #cbd5e1;
            --embc-border-dashed: #94a3b8;
            --embc-accent: #0f172a;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
        }

        body {
            background-color: var(--embc-bg);
            color: var(--embc-text);
            line-height: 1.6;
            padding: 20px;
        }

        .embc-container {
            max-width: 1440px;
            margin: 0 auto;
        }

        /* Header & Branding */
        .embc-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-bottom: 20px;
            border-bottom: 1px dashed var(--embc-border-dashed);
            margin-bottom: 25px;
            flex-wrap: wrap;
            gap: 15px;
        }

        .embc-brand-logo {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .embc-logo-icon {
            width: 48px;
            height: 48px;
            background: #0f172a;
            color: #ffffff;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 24px;
        }

        .embc-brand-title {
            font-size: 24px;
            font-weight: 800;
            letter-spacing: -0.5px;
        }

        .embc-brand-subtitle {
            font-size: 12px;
            color: var(--embc-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
            font-weight: 600;
        }

        .embc-badge {
            background-color: #e2e8f0;
            color: #0f172a;
            border: 1px dashed var(--embc-border-dashed);
            padding: 5px 12px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 700;
        }

        /* Navigation Tabs */
        .embc-nav-tabs {
            display: flex;
            gap: 8px;
            margin-bottom: 25px;
            border-bottom: 1px dashed var(--embc-border-dashed);
            padding-bottom: 12px;
            overflow-x: auto;
        }

        .embc-tab-btn {
            background: transparent;
            color: var(--embc-muted);
            border: 1px solid transparent;
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .embc-tab-btn:hover {
            color: var(--embc-text);
            background-color: var(--embc-surface);
        }

        .embc-tab-btn.embc-active {
            color: #ffffff;
            background-color: #0f172a;
            border-color: #0f172a;
        }

        /* Layout Grid */
        .embc-grid-3 {
            display: grid;
            grid-template-columns: 1fr 340px 340px;
            gap: 20px;
        }

        .embc-grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        @media (max-width: 1200px) {
            .embc-grid-3, .embc-grid-2 {
                grid-template-columns: 1fr;
            }
        }

        .embc-card {
            background-color: var(--embc-card);
            border: 1px dashed var(--embc-border-dashed);
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 20px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.05);
        }

        .embc-card-title {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 14px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px dashed var(--embc-border-dashed);
            padding-bottom: 8px;
        }

        /* Three.js 3D Viewport */
        .embc-viewport-3d {
            position: relative;
            width: 100%;
            height: 380px;
            background-color: #e2e8f0;
            border-radius: 6px;
            border: 1px dashed var(--embc-border-dashed);
            overflow: hidden;
        }

        #embcCanvasContainer {
            width: 100%;
            height: 100%;
            display: block;
        }

        .embc-viewport-hint {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(255, 255, 255, 0.9);
            padding: 6px 10px;
            border-radius: 4px;
            border: 1px dashed var(--embc-border-dashed);
            font-size: 11px;
            color: var(--embc-muted);
            pointer-events: none;
        }

        /* Toolbar & Forms */
        .embc-toolbar {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 14px;
            background: var(--embc-surface);
            padding: 10px;
            border-radius: 6px;
            border: 1px dashed var(--embc-border-dashed);
            align-items: center;
        }

        .embc-btn {
            background-color: #e2e8f0;
            color: #0f172a;
            border: 1px solid var(--embc-border);
            padding: 7px 12px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .embc-btn:hover {
            background-color: #cbd5e1;
        }

        .embc-btn-primary {
            background-color: #0f172a;
            color: #ffffff;
            border-color: #0f172a;
        }

        .embc-btn-primary:hover {
            background-color: #334155;
        }

        .embc-select, .embc-input {
            background-color: #ffffff;
            color: #0f172a;
            border: 1px dashed var(--embc-border-dashed);
            padding: 7px 10px;
            border-radius: 6px;
            font-size: 12px;
            outline: none;
            width: 100%;
        }

        .embc-form-group {
            margin-bottom: 10px;
        }

        .embc-form-label {
            display: block;
            font-size: 11px;
            font-weight: 600;
            color: var(--embc-muted);
            margin-bottom: 4px;
        }

        /* Detail Rows & Tables with dashed borders */
        .embc-detail-row {
            display: flex;
            justify-content: space-between;
            padding: 8px 0;
            border-bottom: 1px dashed var(--embc-border-dashed);
            font-size: 12px;
        }

        .embc-detail-label {
            color: var(--embc-muted);
        }

        .embc-detail-val {
            font-weight: 600;
        }

        .embc-status-pill {
            display: inline-block;
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 10px;
            font-weight: 700;
            border: 1px dashed var(--embc-border-dashed);
        }
        .embc-status-occupied { background-color: #e2e8f0; color: #0f172a; }
        .embc-status-free { background-color: #f1f5f9; color: #64748b; }

        .embc-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 12px;
            text-align: left;
        }

        .embc-table th, .embc-table td {
            padding: 8px 10px;
            border-bottom: 1px dashed var(--embc-border-dashed);
        }

        .embc-table th {
            background-color: var(--embc-surface);
            color: var(--embc-muted);
            border-top: 1px dashed var(--embc-border-dashed);
        }

        .embc-barcode-box {
            background: #ffffff;
            padding: 8px;
            border-radius: 6px;
            text-align: center;
            margin-top: 12px;
            border: 1px dashed var(--embc-border-dashed);
        }

        #embcBarcodeCanvas {
            max-width: 100%;
            height: 38px;
        }

        .embc-tab-content { display: none; }
        .embc-tab-content.embc-active { display: block; }

        .embc-doc-section {
            margin-bottom: 24px;
        }

        .embc-doc-section h3 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #0f172a;
        }

        .embc-doc-section p {
            font-size: 13px;
            color: #334155;
            margin-bottom: 8px;
            line-height: 1.6;
        }

        .embc-hint-box {
            background: var(--embc-surface);
            border: 1px dashed var(--embc-border-dashed);
            padding: 10px 14px;
            border-radius: 6px;
            font-size: 12px;
            color: #334155;
            margin-top: 10px;
        }

        .embc-console-box {
            background: #0f172a;
            color: #f8fafc;
            padding: 12px;
            border-radius: 6px;
            font-family: monospace;
            font-size: 11px;
            height: 180px;
            overflow-y: auto;
            border: 1px dashed var(--embc-border-dashed);
            margin-top: 10px;
        }

        /* Footer Styling (Logo EMBC.PL po lewej, poniżej podkreślenie i prawa strona) */
        .embc-footer {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px dashed var(--embc-border-dashed);
        }

        .embc-footer-main {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            flex-wrap: wrap;
            gap: 20px;
            padding-bottom: 15px;
        }

        .embc-footer-left {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .embc-footer-logo {
            font-size: 18px;
            font-weight: 800;
            color: var(--embc-text);
            letter-spacing: -0.5px;
        }

        .embc-footer-menu {
            display: flex;
            gap: 15px;
            font-size: 12px;
            color: var(--embc-muted);
            flex-wrap: wrap;
        }

        .embc-footer-menu a {
            color: var(--embc-muted);
            text-decoration: none;
            transition: color 0.2s;
        }

        .embc-footer-menu a:hover {
            color: var(--embc-text);
            text-decoration: underline;
        }

        .embc-footer-divider {
            width: 100%;
            border-bottom: 1px dashed var(--embc-border-dashed);
            margin: 10px 0 15px 0;
        }

        .embc-footer-right {
            text-align: right;
            font-size: 12px;
            color: var(--embc-muted);
        }

        @media (max-width: 768px) {
            .embc-footer-main {
                flex-direction: column;
            }
            .embc-footer-right {
                text-align: left;
            }
        }