/* Optical Designer - Component Styles */

:root {
    --od-tool: #0d9488;
    --od-tool-dark: #0f766e;
    --od-gradient: linear-gradient(135deg, #0d9488 0%, #06b6d4 100%);
    --od-light: #f0fdfa;
}
[data-theme="dark"] {
    --od-light: rgba(13, 148, 136, 0.15);
}

/* ===== Layout Override: narrow input column, wide result area ===== */
.od-layout.tool-page-container {
    grid-template-columns: minmax(280px, 340px) 1fr 300px;
}
@media (max-width: 1024px) {
    .od-layout.tool-page-container {
        grid-template-columns: minmax(270px, 320px) 1fr;
    }
}
@media (max-width: 900px) {
    .od-layout.tool-page-container {
        grid-template-columns: 1fr;
    }
}

/* ===== Compact input column ===== */
.od-layout .tool-card-body { padding: 0.5rem; }
.od-layout .tool-card-header { padding: 0.375rem 0.5rem; font-size: 0.75rem; }

/* ===== Toolbar Row ===== */
.od-toolbar {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    margin-bottom: 0.625rem;
    flex-wrap: wrap;
}
.od-toolbar-btn {
    padding: 0.3rem 0.5rem;
    font-size: 0.625rem;
    font-weight: 600;
    border: 1.5px solid var(--border);
    border-radius: 0.375rem;
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
    font-family: var(--font-sans);
    white-space: nowrap;
}
.od-toolbar-btn:hover {
    border-color: var(--od-tool);
    color: var(--od-tool);
    background: var(--od-light);
}
.od-toolbar-btn-primary {
    background: var(--od-gradient);
    color: #fff;
    border-color: transparent;
}
.od-toolbar-btn-primary:hover {
    opacity: 0.9;
    color: #fff;
    background: var(--od-gradient);
}
.od-toolbar-btn-accent {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #fff;
    border-color: transparent;
}
.od-toolbar-btn-accent:hover { filter: brightness(1.1); color: #fff; }
.od-toolbar-btn-danger {
    color: #dc2626;
    border-color: #fca5a5;
}
.od-toolbar-btn-danger:hover {
    background: #fef2f2;
    border-color: #dc2626;
}
[data-theme="dark"] .od-toolbar-btn-danger:hover {
    background: rgba(239,68,68,0.1);
}

/* ===== Preset + View Select ===== */
.od-select {
    padding: 0.3rem 0.4rem;
    font-size: 0.6875rem;
    font-family: var(--font-sans);
    font-weight: 500;
    border: 1.5px solid var(--border);
    border-radius: 0.375rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
    transition: border-color 0.15s;
    max-width: 100%;
}
.od-select:focus {
    outline: none;
    border-color: var(--od-tool);
}

/* ===== Surface Table ===== */
.od-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    margin-bottom: 0.625rem;
}
.od-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.75rem;
    font-family: var(--font-mono);
}
.od-th {
    padding: 0.3rem 0.15rem;
    font-size: 0.5625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border-bottom: 1.5px solid var(--border);
    text-align: center;
    white-space: nowrap;
    font-family: var(--font-sans);
}
.od-tr {
    cursor: pointer;
    transition: background 0.1s;
}
.od-tr:hover {
    background: var(--od-light);
}
.od-tr-selected {
    background: var(--od-light) !important;
    border-left: 3px solid var(--od-tool);
}
.od-td {
    padding: 0.2rem 0.125rem;
    border-bottom: 1px solid var(--border);
    text-align: center;
    vertical-align: middle;
}
.od-td-idx {
    width: 1.75rem;
    font-weight: 700;
    color: var(--text-muted);
    font-family: var(--font-sans);
    font-size: 0.625rem;
    border-right: 1px solid var(--border);
}
.od-cell {
    width: 100%;
    padding: 0.2rem 0.125rem;
    font-size: 0.6875rem;
    font-family: var(--font-mono);
    border: 1px solid transparent;
    border-radius: 0.25rem;
    background: transparent;
    color: var(--text-primary);
    text-align: center;
    transition: border-color 0.15s, background 0.15s;
}
.od-cell:focus {
    outline: none;
    border-color: var(--od-tool);
    background: var(--bg-primary);
    box-shadow: 0 0 0 2px rgba(13, 148, 136, 0.08);
}
.od-mat-select {
    font-family: var(--font-sans);
    font-size: 0.625rem;
    padding: 0.15rem;
    cursor: pointer;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 0.25rem;
    color: var(--text-primary);
}
.od-mat-select:focus {
    border-color: var(--od-tool);
    background: var(--bg-primary);
}

/* ===== Input Groups (environment) ===== */
.od-input-label {
    display: block;
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.15rem;
}
.od-input {
    width: 100%;
    padding: 0.3rem 0.375rem;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    border: 1.5px solid var(--border);
    border-radius: 0.375rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    text-align: center;
    transition: border-color 0.15s;
}
.od-input:focus {
    outline: none;
    border-color: var(--od-tool);
    box-shadow: 0 0 0 2px rgba(13, 148, 136, 0.08);
}

/* ===== 2-col and 3-col input grids ===== */
.od-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.od-3col { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.5rem; }
@media (max-width: 400px) {
    .od-2col, .od-3col { grid-template-columns: 1fr; }
}

/* ===== Compact environment grid: label + input pairs in 4 columns ===== */
.od-env-grid {
    display: grid;
    grid-template-columns: auto 1fr auto 1fr;
    gap: 0.2rem 0.3rem;
    align-items: center;
}
.od-env-lbl {
    font-size: 0.5625rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    white-space: nowrap;
}
.od-env-inp {
    padding: 0.2rem 0.25rem !important;
    font-size: 0.6875rem !important;
}
@media (max-width: 400px) {
    .od-env-grid { grid-template-columns: auto 1fr; }
}

/* ===== Toggle row ===== */
.od-toggle-row {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    cursor: pointer;
    font-size: 0.75rem;
    color: var(--text-secondary);
}
.od-toggle-row input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--od-tool);
    cursor: pointer;
}

/* ===== Section divider ===== */
.od-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 0.625rem 0;
}

/* ===== Canvas ===== */
.od-canvas-wrap {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    overflow: hidden;
    position: relative;
    background: var(--bg-primary);
}
.od-canvas-wrap canvas {
    width: 100%;
    height: 450px;
    display: block;
}
.od-canvas-toolbar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

/* ===== Metrics Cards ===== */
.od-metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 0.5rem;
    margin-top: 0.75rem;
}
.od-metric-card {
    padding: 0.5rem 0.625rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    border-left: 3px solid var(--od-tool);
}
.od-metric-label {
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 0.1rem;
}
.od-metric-value {
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== Chromatic Table Container ===== */
.od-chrom-wrap {
    margin-top: 0.75rem;
}

/* ===== FAQ Accordion ===== */
.od-faq-list { display: flex; flex-direction: column; gap: 0.375rem; }
.od-faq-item {
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    overflow: hidden;
}
.od-faq-item[open] { border-color: var(--od-tool); }
.od-faq-q {
    padding: 0.625rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    background: var(--bg-secondary);
    transition: background 0.15s;
}
.od-faq-q:hover { background: var(--od-light); }
.od-faq-q::after {
    content: '+';
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-muted);
    flex-shrink: 0;
    transition: transform 0.15s;
}
.od-faq-item[open] .od-faq-q::after { content: '\2212'; color: var(--od-tool); }
.od-faq-q::-webkit-details-marker { display: none; }
.od-faq-a {
    padding: 0.5rem 0.75rem 0.75rem;
    font-size: 0.8125rem;
    line-height: 1.65;
    color: var(--text-secondary);
    margin: 0;
    border-top: 1px solid var(--border);
}

/* ===== Educational Content ===== */
.od-edu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 0.75rem;
}
.od-edu-card {
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    font-size: 0.8125rem;
    line-height: 1.6;
}
.od-edu-card h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 0.375rem;
}
.od-edu-card p {
    margin: 0;
    color: var(--text-secondary);
}

/* ===== File buttons ===== */
.od-file-row {
    display: flex;
    gap: 0.375rem;
    flex-wrap: wrap;
}

/* ===== Hidden file input ===== */
.od-hidden { display: none; }

/* ===== Responsive ===== */
@media (max-width: 640px) {
    .od-metrics-grid {
        grid-template-columns: 1fr 1fr;
    }
    .od-canvas-wrap canvas {
        height: 300px;
    }
}