/* Base styles and variables */
.ta-app {
    --primary-color: #2b6cb0;
    --secondary-color: #4299e1;
    --background-color: #f7fafc;
    --text-color: #2d3748;
    --border-color: #e2e8f0;
    --header-bg: #2d3748;
    --input-bg: #edf2f7;
    --hover-color: #3182ce;
    --transition-speed: 0.3s;
    width: 100%;
    margin: 0;
    padding: 0;
    color: var(--text-color);
    font-family: Roboto, "Open Sans", Arial, sans-serif;
    font-size: 14px;
    line-height: 1.4;
    text-align: left;
    text-transform: none;
    letter-spacing: normal;
    isolation: isolate;
}

.ta-app,
.ta-app *,
.ta-app *::before,
.ta-app *::after {
    box-sizing: border-box;
}

.ta-app button,
.ta-app input,
.ta-app select,
.ta-app textarea {
    font: inherit;
    letter-spacing: normal;
    text-transform: none;
}

/* Layout and responsiveness */
.ta-app .ta_calculator,
.ta-app .graphs-section,
.ta-app .report-generation-section {
    width: calc(100% - 32px);
    max-width: 1400px;
    margin-inline: auto;
}

.ta-app .ta_calculator {
    overflow-x: auto;
    padding: 16px;
    background-color: var(--background-color);
}

/* Keep app table headers dark even when the report template is injected */
.ta-app #input-table thead tr#headers > th,
.ta-app #results-table thead tr#headers > th {
  background-color: var(--header-bg) !important;
  color: #fff !important;
}

.ta-app .required-marker {
    color: #fca5a5;
    font-weight: 700;
}

.ta-app .required-fields-note {
    margin: -6px 0 10px;
    color: #64748b;
    font-size: 11.5px;
    line-height: 1.35;
}

.ta-app .required-fields-note > span {
    color: #dc2626;
    font-weight: 700;
}

.ta-app td.required-field-empty {
    background-color: #fff7f7 !important;
    box-shadow: inset 0 0 0 1.5px #dc2626 !important;
}

.ta-app td.required-field-empty:focus {
    box-shadow: inset 0 0 0 1.5px #dc2626, 0 0 0 2px rgba(220, 38, 38, 0.2) !important;
}

.ta-app .project-file-controls {
    display: flex;
    align-items: center;
    gap: 7px;
    margin-left: auto;
}

.ta-app .project-file-controls button {
    padding: 6px 12px;
    border: 0;
    border-radius: 5px;
    background: var(--primary-color);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}

.ta-app .project-file-controls button:hover,
.ta-app .project-file-controls button:focus-visible {
    background: var(--hover-color);
    color: #fff;
    outline: none;
}

.ta-app .project-file-status {
    max-width: 420px;
    overflow: hidden;
    color: #64748b;
    font-size: 11.5px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ta-app .project-file-status.is-error {
    color: #b91c1c;
}

.ta-app table {
    border-collapse: collapse;
    width: 100%;
    margin: 12px 0;
    background-color: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    overflow: hidden;
}

.ta-app th,
.ta-app td {
    border: 1px solid var(--border-color);
    padding: 7px 8px;
    font-size: 12px;
    transition: background-color var(--transition-speed);
}

/* Header styling */
.ta-app #headers,
.ta-app .row-number {
    font-weight: 600;
    text-align: center;
    background-color: var(--header-bg);
    color: white;
}

.ta-app .row-number {
    white-space: nowrap;
}

.ta-app .row-number-label {
    display: inline-block;
    min-width: 1.25em;
}

.ta-app .row-delete-btn {
    width: 22px;
    height: 22px;
    margin-right: 4px;
    padding: 0;
    border: 0;
    border-radius: 3px;
    background: transparent;
    color: rgba(255, 255, 255, 0.62);
    cursor: pointer;
    vertical-align: middle;
    opacity: 0.72;
    transition: color 0.15s ease, opacity 0.15s ease, background-color 0.15s ease;
}

.ta-app .row-delete-btn svg {
    display: block;
    width: 16px;
    height: 16px;
    margin: auto;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.ta-app .row-delete-btn:hover,
.ta-app .row-delete-btn:focus-visible {
    background-color: rgba(255, 255, 255, 0.12);
    color: #fecaca;
    opacity: 1;
    outline: 1px solid rgba(255, 255, 255, 0.45);
    outline-offset: 1px;
}

/* Input styling */
.ta-app .dropdown {
    width: 100%;
    padding: 5px 6px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: white;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold; /* Make text bold */
}

.ta-app .text-input,
.ta-app .number-input {
    background-color: var(--input-bg);
    border-radius: 4px;
    padding: 5px 6px;
    vertical-align: middle;
    transition: all var(--transition-speed);
}

/* Keep an empty editable cell's caret on the same baseline as typed text. */
.ta-app #input-table td[contenteditable="true"]:empty::after {
    content: "\200b";
}

.ta-app .text-input:focus,
.ta-app .number-input:focus {
    background-color: white;
    outline: 2px solid var(--primary-color);
}

.ta-app td {
    background-color: white;
}

.ta-app #input-table td[name],
.ta-app #input-table select[name="sign"],
.ta-app #results-table td[name] {
    text-align: center;
}

/* Button styling */
.ta-app #add-row-btn,
.ta-app #delete-row-btn {
    padding: 8px 14px;
    margin: 6px;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.ta-app #add-row-btn {
    background-color: var(--primary-color);
    color: white;
}

.ta-app #delete-row-btn {
    background-color: #e53e3e;
    color: white;
}

.ta-app #add-row-btn:hover {
    background-color: var(--hover-color);
    transform: translateY(-1px);
}

.ta-app #delete-row-btn:hover {
    background-color: #c53030;
    transform: translateY(-1px);
}

/* Tooltip styling */
.ta-app .parentCell {
    position: relative;
    overflow: visible;
}

.ta-app .tooltip {
    display: none;
    position: absolute;
    z-index: 100;
    background-color: #2d3748;
    color: white;
    padding: 6px 10px;
    border-radius: 4px;
    font-size: 12px;
    top: -40px;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.ta-app #header-explain-tooltip,
.ta-app #mc-explain-tooltip { white-space: pre-line; }

.ta-app td[name="sigma"]:empty::before {
  content: "3 (default)";
  color: #718096;      /* slate gray hint */
  opacity: 0.8;
  pointer-events: none;
}

/* Results table styling */
.ta-app #results-table {
    margin-top: 18px;
}

.ta-app #results-table td[name] {
    font-weight: 500;
    color: var(--text-color);
}

@media (max-width: 1024px) {
    .ta-app .ta_calculator {
        padding: 12px;
    }
    
    .ta-app th,
    .ta-app td {
        padding: 6px;
        font-size: 11.5px;
    }
}

@media (max-width: 768px) {
    .ta-app .ta_calculator,
    .ta-app .graphs-section,
    .ta-app .report-generation-section {
        width: calc(100% - 16px);
    }

    .ta-app .ta_calculator {
        padding: 8px;
    }
    
    .ta-app table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
    
    .ta-app #add-row-btn,
    .ta-app #delete-row-btn {
        width: 100%;
        margin: 6px 0;
    }

    .ta-app .project-file-controls {
        flex-wrap: wrap;
        margin-left: 0;
    }

    .ta-app .project-file-status {
        flex-basis: 100%;
    }
}

/* Analysis Metrics Styles */
.ta-app .analysis-metrics {
    display: flex;
    gap: 12px;
    margin-top: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.ta-app .metric-card {
    background: white;
    border-radius: 12px;
    padding: 14px;
    min-width: 220px;
    flex: 1;
    max-width: 400px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.ta-app .metric-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.ta-app .metric-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.ta-app .metric-icon {
    font-size: 18px;
    background: var(--background-color);
    padding: 5px;
    border-radius: 8px;
}

.ta-app .metric-header h3 {
    margin: 0;
    font-size: 14px;
    color: var(--text-color);
    font-weight: 600;
}

.ta-app .metric-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 8px 0;
    text-align: center;
    font-feature-settings: "tnum";
    font-variant-numeric: tabular-nums;
    transition: color 0.3s ease;
}

.ta-app .metric-value[name="scrap"]::after {
    content: '%';
    font-size: 17px;
    margin-left: 2px;
    opacity: 0.7;
}

.ta-app .metric-value[name="scrap-mc"]::after {
  content: '%';
  font-size: 17px;
  margin-left: 2px;
  opacity: 0.7;
}

.ta-app .metric-description {
    font-size: 12px;
    color: var(--text-color);
    opacity: 0.8;
    line-height: 1.4;
    text-align: center;
}

@media (max-width: 768px) {
    .ta-app .analysis-metrics {
        gap: 10px;
        margin-top: 12px;
    }

    .ta-app .metric-card {
        padding: 12px;
        min-width: 100%;
    }

    .ta-app .metric-value {
        font-size: 24px;
    }

    .ta-app .metric-header h3 {
        font-size: 13px;
    }

    .ta-app .metric-description {
        font-size: 11.5px;
    }
}

/* Specification Limits Styles */
.ta-app .spec-limits {
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.ta-app .spec-enable {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 4px;
}

.ta-app .spec-enable input[type="checkbox"] {
    width: 16px;
    height: 16px;
    border-radius: 4px;
    border: 2px solid var(--border-color);
    cursor: pointer;
}

.ta-app .spec-enable label {
    font-size: 14px;
    color: var(--text-color);
    cursor: pointer;
    font-weight: 500;
}

.ta-app .spec-inputs {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    width: 100%;
    max-width: 600px;
}

.ta-app .spec-input-group {
    background: white;
    border-radius: 8px;
    padding: 10px 12px;
    flex: 1;
    min-width: 200px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.ta-app .spec-input-group label {
    font-size: 12px;
    color: var(--text-color);
    opacity: 0.9;
}

.ta-app .spec-input-group input[type="number"] {
    padding: 6px 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    width: 100%;
    transition: border-color 0.2s ease, opacity 0.2s ease;
    box-sizing: border-box;
}

.ta-app .spec-input-group input[type="number"]:disabled {
    background-color: var(--background-color);
    opacity: 0.7;
    cursor: not-allowed;
}

.ta-app .spec-input-group input[type="number"]:not(:disabled):hover {
    border-color: var(--primary-color);
}

.ta-app .spec-input-group input[type="number"]:not(:disabled):focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(66, 153, 225, 0.2);
}

@media (max-width: 768px) {
    .ta-app .spec-limits {
        margin-bottom: 12px;
    }

    .ta-app .spec-inputs {
        gap: 8px;
    }

    .ta-app .spec-input-group {
        min-width: 100%;
        padding: 9px 12px;
    }
}
.ta-app .monte-carlo-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-bottom: 4px;
}

.ta-app #input-table {
    margin-top: 6px;
}

.ta-app .monte-carlo-options label {
    font-weight: 500;
    margin-right: 6px;
}

.ta-app .monte-carlo-options input,
.ta-app .monte-carlo-options button {
    padding: 5px 8px;
    font-size: 13px;
}

.ta-app #run-mc-btn {
    background-color: #2a6db0;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.ta-app #run-mc-btn:hover {
    background-color: #1f5488;
}

/* Report Generation Section Styles */
.ta-app .report-generation-section {
    background-color: var(--background-color);
    padding: 18px 16px;
    margin-top: 16px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.ta-app .report-generation-section h2 {
    font-size: 20px;
    color: var(--text-color);
    margin: 0 0 14px;
    text-align: center;
}

.ta-app .report-form-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    width: 100%;
    max-width: 1100px;
    margin-bottom: 14px;
}

.ta-app .report-input-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.ta-app .report-input-group.full-width {
    grid-column: 1 / -1; /* Span all columns */
}

.ta-app .report-input-group label {
    font-weight: 500;
    color: var(--text-color);
    font-size: 12px;
}

.ta-app .report-input-group input[type="text"],
.ta-app .report-input-group input[type="date"],
.ta-app .report-input-group textarea {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: white;
    font-size: 13px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.ta-app .report-input-group input:focus,
.ta-app .report-input-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(43, 108, 176, 0.2);
}

.ta-app #generate-report-btn {
    padding: 8px 18px;
    background-color: #276749; /* A green color */
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition-speed);
    font-size: 13px;
}

.ta-app #generate-report-btn:hover {
    background-color: #22543D;
}

@media (max-width: 768px) {
    .ta-app .report-form-grid {
        grid-template-columns: 1fr;
    }
}