/* SPDX-License-Identifier: 0BSD */
/**
 * AI-CODING NOTE:
 * Responsibility: Apply the Engrove Tools visual tokens and desktop empty/import workspace styling to the TD053F shell.
 * Inputs: Shared /styles.css variables and stable Tonearm Designer element IDs/classes.
 * Outputs: Desktop-only visual integration; no responsive/mobile contract.
 * Safe edits: Colors, borders, spacing, focus states, and desktop import layout.
 * Do not: Hide controls, change geometry behavior, or introduce mobile breakpoints.
 * Verification: Browser visual smoke test at a desktop viewport.
 */
:root {
    color-scheme: dark;
    --designer-bg: var(--bg, #0e1116);
    --designer-panel: var(--bg-elev, #171b22);
    --designer-line: var(--border, #262c36);
    --designer-text: var(--text, #e8eaed);
    --designer-muted: var(--text-muted, #9aa2ad);
    --designer-accent: var(--accent, #6b93ff);
    --designer-accent-soft: var(--accent-soft, rgba(107, 147, 255, 0.14));
}

body {
    min-width: 1180px;
    background: var(--designer-bg);
    color: var(--designer-text);
}

.sidebar,
.sidebar-header,
.floating-analysis-panel,
.canvas-container {
    background: var(--designer-panel);
    border-color: var(--designer-line);
}

.sidebar {
    border: 1px solid var(--designer-line);
    box-shadow: var(--shadow, 0 10px 30px rgba(0, 0, 0, 0.35));
}

button,
select,
input[type="text"],
input[type="number"],
textarea {
    border: 1px solid var(--designer-line);
    background: var(--designer-bg);
    color: var(--designer-text);
}

button:hover,
button:focus-visible,
select:focus-visible,
input:focus-visible,
textarea:focus-visible {
    border-color: var(--designer-accent);
    outline: 2px solid var(--designer-accent-soft);
    outline-offset: 1px;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.42;
}

.designer-home-link {
    display: inline-flex;
    color: var(--designer-accent);
    text-decoration: none;
    font-size: 11px;
    margin-bottom: 6px;
}

.designer-home-link:hover { text-decoration: underline; }

.design-session-panel {
    border: 1px solid var(--designer-line);
    border-radius: 8px;
    background: var(--designer-bg);
    padding: 10px;
    margin-bottom: 12px;
}

.design-session-heading {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.design-session-heading strong { font-size: 12px; }

#designSessionState {
    color: var(--designer-muted);
    font: 10px/1.3 ui-monospace, Consolas, monospace;
}

#designSessionState[data-state="active"] { color: #4cae6e; }

.design-session-actions,
.manual-trace-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.design-session-actions button,
.manual-trace-actions button,
.manual-trace-remove {
    margin: 0;
    width: auto;
    padding: 6px 8px;
    font-size: 11px;
}

.manual-trace-import {
    border-top: 1px solid var(--designer-line);
    margin-top: 10px;
    padding-top: 10px;
}

.manual-trace-import > strong {
    display: block;
    color: var(--designer-accent);
    font-size: 12px;
    margin-bottom: 6px;
}

.manual-trace-file {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 106px;
    gap: 5px 7px;
    border: 1px solid var(--designer-line);
    border-radius: 6px;
    padding: 7px;
    margin: 7px 0;
}

.manual-trace-file-identity {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.manual-trace-file-identity strong,
.manual-trace-file-identity span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.manual-trace-file-identity strong { font-size: 11px; }
.manual-trace-file-identity span,
.manual-trace-plane { color: var(--designer-muted); font-size: 9px; }
.manual-trace-file select { font-size: 10px; padding: 3px; }
.manual-trace-remove { color: #ff8b7c; }

.manual-trace-status {
    min-height: 28px;
    margin-top: 7px;
    color: var(--designer-muted);
    font: 10px/1.35 ui-monospace, Consolas, monospace;
    overflow-wrap: anywhere;
}

.manual-trace-status.success { color: #4cae6e; }
.manual-trace-status.error { color: #ff8b7c; }

.station-count-row {
    display: grid;
    grid-template-columns: 1fr 70px;
    gap: 8px;
    align-items: center;
    color: var(--designer-muted);
    font-size: 10px;
    margin: 7px 0;
}

#emptyDesignOverlay {
    position: absolute;
    inset: 0;
    z-index: 20;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, rgba(14, 17, 22, 0.98), rgba(23, 27, 34, 0.94));
}

#emptyDesignOverlay[hidden] { display: none; }

.empty-design-card {
    width: min(620px, calc(100% - 60px));
    border: 1px solid var(--designer-line);
    border-radius: 14px;
    background: var(--designer-panel);
    box-shadow: var(--shadow, 0 10px 30px rgba(0, 0, 0, 0.35));
    padding: 26px;
    text-align: center;
}

.empty-design-card h3 { margin: 0 0 8px; font-size: 20px; }
.empty-design-card p { color: var(--designer-muted); margin: 0 0 18px; }
.empty-design-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.empty-design-actions button { width: auto; margin: 0; }