/* Portfolio Backtest Lab -------------------------------------------------- */

.pbt-calc {
    --pbt-ink: #080b10;
    --pbt-surface: #0e1219;
    --pbt-panel: #131923;
    --pbt-panel-2: #181f2b;
    --pbt-line: #303846;
    --pbt-line-soft: #242b36;
    --pbt-text: #edf0eb;
    --pbt-muted: #949ca8;
    --pbt-faint: #68717e;
    --pbt-teal: #68c1cf;
    --pbt-orange: #d97706;
    --pbt-orange-hover: #f08a18;
    --pbt-green: #44b875;
    --pbt-red: #e05a54;
    --pbt-body: Arial, "Helvetica Neue", Helvetica, sans-serif;
    --pbt-display: Georgia, "Times New Roman", serif;
    --pbt-data: ui-monospace, "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    margin: 2rem 0;
    padding: 34px 28px 28px;
    overflow: hidden;
    color: var(--pbt-text);
    background: var(--pbt-surface);
    border: 1px solid var(--pbt-line);
    border-top: 4px solid var(--pbt-orange);
    font-family: var(--pbt-body);
}

.pbt-calc * { box-sizing: border-box; }

.pbt-header {
    max-width: 820px;
    margin: 0 0 30px;
    padding: 0 0 22px;
    border-bottom: 1px solid var(--pbt-line);
}

.pbt-eyebrow,
.pbt-panel-title,
.pbt-metric-label,
.pbt-section-kicker,
.pbt-input-card strong {
    font-family: var(--pbt-data);
}

.pbt-eyebrow {
    display: block;
    margin-bottom: 10px;
    color: var(--pbt-orange);
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .16em;
}

.pbt-header h2 {
    margin: 0 0 10px;
    color: var(--pbt-text);
    font-family: var(--pbt-display);
    font-size: clamp(1.7rem, 3vw, 2.45rem);
    font-weight: 600;
    line-height: 1.08;
    letter-spacing: -.035em;
}

.pbt-header p {
    max-width: 740px;
    margin: 0;
    color: var(--pbt-muted);
    font-size: .97rem;
    line-height: 1.62;
}

.pbt-grid {
    display: grid;
    grid-template-columns: 420px minmax(0, 1fr);
    gap: 1px;
    overflow: hidden;
    background: var(--pbt-line);
    border: 1px solid var(--pbt-line);
}

.pbt-panel {
    min-width: 0;
    padding: 26px;
    background: var(--pbt-panel);
}

.pbt-results-panel { overflow: hidden; }

.pbt-panel-title {
    display: flex;
    gap: 8px;
    margin: 0 0 24px;
    padding: 0 0 12px;
    color: var(--pbt-text);
    border-bottom: 1px solid var(--pbt-line);
    font-size: .76rem;
    font-weight: 700;
    letter-spacing: .12em;
    line-height: 1.2;
    text-transform: uppercase;
}

.pbt-panel-title span { color: var(--pbt-orange); }

.pbt-field-row,
.pbt-custom-window {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.pbt-custom-window[hidden] { display: none; }

.pbt-field {
    display: block;
    margin: 0 0 18px;
}

.pbt-field > span:first-child,
.pbt-holding-row label > span:first-child,
.pbt-symbol-field > label {
    display: block;
    margin-bottom: 7px;
    color: var(--pbt-text);
    font-size: .75rem;
    font-weight: 600;
}

.pbt-field small {
    display: block;
    margin-top: 6px;
    color: var(--pbt-faint);
    font-size: .74rem;
    line-height: 1.45;
}

.pbt-input-wrap {
    position: relative;
    display: block;
}

.pbt-weight { padding-right: 32px; }

.pbt-prefix,
.pbt-suffix {
    position: absolute;
    top: 50%;
    z-index: 1;
    color: var(--pbt-muted);
    font-family: var(--pbt-data);
    transform: translateY(-50%);
    pointer-events: none;
}

.pbt-prefix { left: 14px; }
.pbt-suffix { right: 13px; }

.pbt-calc input,
.pbt-calc select {
    width: 100%;
    min-height: 46px;
    padding: 11px 13px;
    color: var(--pbt-text);
    background: var(--pbt-ink);
    border: 1px solid var(--pbt-line);
    border-radius: 0;
    outline: none;
    font: .93rem/1.2 var(--pbt-data);
    font-variant-numeric: tabular-nums;
}

.pbt-calc select { font-family: var(--pbt-body); }
.pbt-input-wrap .pbt-prefix + input { padding-left: 32px; }
.pbt-input-wrap input + .pbt-suffix { padding-right: 0; }
.pbt-input-wrap input:has(+ .pbt-suffix) { padding-right: 32px; }

.pbt-calc input:focus,
.pbt-calc select:focus {
    border-color: var(--pbt-teal);
    box-shadow: 0 0 0 1px var(--pbt-teal);
}

.pbt-holdings-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 15px;
    margin: 8px 0 12px;
    padding-top: 18px;
    border-top: 1px solid var(--pbt-line);
}

.pbt-holdings-heading h4 {
    margin: 0 0 3px;
    color: var(--pbt-text);
    font-family: var(--pbt-display);
    font-size: 1.02rem;
}

.pbt-holdings-heading p {
    margin: 0;
    color: var(--pbt-faint);
    font-size: .74rem;
}

.pbt-holdings-heading > strong {
    color: var(--pbt-teal);
    font: 700 .86rem var(--pbt-data);
}

.pbt-holdings-heading > strong.is-invalid { color: var(--pbt-red); }

.pbt-holding-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 112px 38px;
    gap: 8px;
    align-items: end;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--pbt-line-soft);
}

.pbt-holding-row > * { min-width: 0; }

.pbt-symbol-input-wrap {
    position: relative;
}

.pbt-symbol-results {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    z-index: 30;
    width: min(390px, calc(100vw - 64px));
    max-height: 290px;
    overflow: auto;
    background: #0a0e14;
    border: 1px solid var(--pbt-line);
    box-shadow: 0 16px 32px rgba(0, 0, 0, .35);
}

.pbt-symbol-results[hidden] { display: none; }

.pbt-symbol-option {
    display: grid;
    grid-template-columns: minmax(100px, auto) minmax(0, 1fr);
    gap: 14px;
    width: 100%;
    padding: 10px 12px;
    color: var(--pbt-text);
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--pbt-line-soft);
    border-radius: 0;
    font-family: var(--pbt-body);
    text-align: left;
    cursor: pointer;
}

.pbt-symbol-option:last-child { border-bottom: 0; }
.pbt-symbol-option:hover,
.pbt-symbol-option.is-active { background: #17202c; }

.pbt-symbol-option span,
.pbt-symbol-option strong,
.pbt-symbol-option small,
.pbt-symbol-option em { min-width: 0; }

.pbt-symbol-option strong {
    display: block;
    color: var(--pbt-teal);
    font: 700 .8rem/1.25 var(--pbt-data);
}

.pbt-symbol-option small {
    display: block;
    margin-top: 3px;
    color: var(--pbt-faint);
    font-size: .66rem;
    line-height: 1.25;
}

.pbt-symbol-option em {
    align-self: center;
    overflow: hidden;
    color: var(--pbt-muted);
    font-size: .74rem;
    font-style: normal;
    line-height: 1.35;
    text-overflow: ellipsis;
}

.pbt-symbol-status {
    padding: 12px;
    color: var(--pbt-faint);
    font-size: .72rem;
    line-height: 1.45;
}

.pbt-remove {
    min-height: 46px;
    color: var(--pbt-muted);
    background: transparent;
    border: 1px solid var(--pbt-line);
    border-radius: 0;
    font: 400 1.25rem var(--pbt-body);
    cursor: pointer;
}

.pbt-remove:hover:not(:disabled) {
    color: var(--pbt-red);
    border-color: var(--pbt-red);
}

.pbt-remove:disabled { opacity: .3; cursor: not-allowed; }

.pbt-secondary-button,
.pbt-copy-button,
.pbt-transfer-link {
    min-height: 42px;
    padding: 10px 14px;
    color: var(--pbt-teal);
    background: transparent;
    border: 1px solid var(--pbt-teal);
    border-radius: 0;
    font: 700 .77rem var(--pbt-body);
    text-decoration: none;
    cursor: pointer;
}

.pbt-secondary-button { margin: 2px 0 20px; }
.pbt-secondary-button:disabled { opacity: .4; cursor: not-allowed; }

.pbt-benchmark-field {
    padding-top: 18px;
    border-top: 1px solid var(--pbt-line);
}

.pbt-run-button {
    width: 100%;
    min-height: 54px;
    margin-top: 4px;
    color: #0c0d0f;
    background: var(--pbt-orange);
    border: 0;
    border-radius: 0;
    font: 800 .78rem var(--pbt-data);
    letter-spacing: .1em;
    text-transform: uppercase;
    cursor: pointer;
}

.pbt-run-button:hover { background: var(--pbt-orange-hover); }
.pbt-run-button:disabled { opacity: .6; cursor: wait; }

.pbt-source-note {
    margin-top: 18px;
    padding: 14px 15px;
    color: var(--pbt-muted);
    background: var(--pbt-ink);
    border-left: 3px solid var(--pbt-teal);
    font-size: .78rem;
    line-height: 1.58;
}

.pbt-source-note strong { color: var(--pbt-text); }

.pbt-error {
    margin: 0 0 12px;
    padding: 11px 12px;
    color: #ffd7d4;
    background: rgba(224, 90, 84, .1);
    border-left: 3px solid var(--pbt-red);
    font-size: .8rem;
    line-height: 1.45;
}

.pbt-placeholder,
.pbt-loading {
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 32px;
    background: var(--pbt-ink);
    border: 1px solid var(--pbt-line);
}

.pbt-placeholder h3,
.pbt-loading h3,
.pbt-results-heading h3,
.pbt-result-section h3,
.pbt-input-card h3 {
    margin: 0 0 8px;
    color: var(--pbt-text);
    font-family: var(--pbt-display);
    font-weight: 600;
    letter-spacing: -.015em;
}

.pbt-placeholder p,
.pbt-loading p,
.pbt-results-heading p,
.pbt-result-section > p,
.pbt-input-card p {
    margin: 0;
    color: var(--pbt-muted);
    font-size: .84rem;
    line-height: 1.58;
}

.pbt-loading-bar {
    width: 72px;
    height: 3px;
    margin: 18px 0 0;
    overflow: hidden;
    background: var(--pbt-line);
}

.pbt-loading-bar::after {
    content: "";
    display: block;
    width: 50%;
    height: 100%;
    background: var(--pbt-orange);
    animation: pbt-loading 1s ease-in-out infinite alternate;
}

@keyframes pbt-loading { to { transform: translateX(100%); } }

.pbt-results-heading {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 18px;
    margin-bottom: 18px;
}

.pbt-results-heading h3 { font-size: 1.28rem; }

.pbt-portfolio-title {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    column-gap: .52rem;
    row-gap: .18rem;
}

.pbt-title-holding {
    display: inline-flex;
    align-items: baseline;
    gap: .34rem;
    white-space: nowrap;
}

.pbt-title-weight { color: var(--pbt-muted); }
.pbt-title-separator { color: var(--pbt-faint); }

.pbt-period-tag {
    flex: 0 0 auto;
    color: var(--pbt-teal);
    font: 700 .72rem var(--pbt-data);
    text-align: right;
}

.pbt-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1px;
    margin-bottom: 22px;
    overflow: hidden;
    background: var(--pbt-line);
    border: 1px solid var(--pbt-line);
}

.pbt-metric {
    min-width: 0;
    padding: 16px 14px;
    background: var(--pbt-ink);
}

.pbt-metric-label {
    display: block;
    margin-bottom: 7px;
    color: var(--pbt-faint);
    font-size: .65rem;
    font-weight: 700;
    letter-spacing: .08em;
    line-height: 1.35;
    text-transform: uppercase;
}

.pbt-metric-value {
    display: block;
    overflow: hidden;
    color: var(--pbt-text);
    font: 700 clamp(1.05rem, 2.2vw, 1.42rem) var(--pbt-data);
    letter-spacing: -.03em;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.pbt-metric-value.is-negative { color: var(--pbt-red); }

.pbt-metric.is-year .pbt-metric-value {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: .25rem .75rem;
    overflow: visible;
    font-size: clamp(1rem, 1.7vw, 1.18rem);
    text-overflow: clip;
    white-space: normal;
}

.pbt-input-card {
    margin: 0 0 22px;
    padding: 20px;
    background: var(--pbt-ink);
    border: 1px solid var(--pbt-teal);
    border-left-width: 4px;
}

.pbt-input-card h3 { font-size: 1.2rem; }

.pbt-input-pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    margin: 16px 0;
    background: var(--pbt-line);
    border: 1px solid var(--pbt-line);
}

.pbt-input-pair > div {
    padding: 14px;
    background: var(--pbt-panel-2);
}

.pbt-input-pair span {
    display: block;
    margin-bottom: 5px;
    color: var(--pbt-muted);
    font-size: .72rem;
}

.pbt-input-pair strong {
    color: var(--pbt-teal);
    font-size: 1.25rem;
    font-variant-numeric: tabular-nums;
}

.pbt-input-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    margin-top: 15px;
}

.pbt-transfer-link {
    display: inline-flex;
    align-items: center;
    color: #0c0d0f;
    background: var(--pbt-teal);
}

.pbt-result-section {
    margin-top: 22px;
    padding-top: 20px;
    border-top: 1px solid var(--pbt-line);
}

.pbt-result-section h3 { font-size: 1.12rem; }

.pbt-chart-wrap {
    position: relative;
    height: 330px;
    margin-top: 13px;
    padding: 12px;
    background: var(--pbt-ink);
    border: 1px solid var(--pbt-line);
}

.pbt-chart-wrap.is-short { height: 220px; }

.pbt-observations {
    counter-reset: pbt-observation;
    margin: 14px 0 0;
    padding: 0;
    list-style: none;
    border-top: 1px solid var(--pbt-line);
}

.pbt-observations li {
    counter-increment: pbt-observation;
    position: relative;
    min-height: 48px;
    padding: 13px 0 13px 54px;
    color: var(--pbt-muted);
    border-bottom: 1px solid var(--pbt-line);
    font-size: .82rem;
    line-height: 1.55;
}

.pbt-observations li::before {
    content: counter(pbt-observation, decimal-leading-zero);
    position: absolute;
    top: 15px;
    left: 0;
    color: var(--pbt-orange);
    font: 700 .72rem var(--pbt-data);
}

.pbt-observations strong {
    margin-right: .25em;
    color: var(--pbt-text);
}

.pbt-table-wrap {
    margin-top: 13px;
    overflow: auto;
    border: 1px solid var(--pbt-line);
}

.pbt-table {
    width: 100%;
    min-width: 560px;
    border-collapse: collapse;
    color: var(--pbt-muted);
    background: var(--pbt-ink);
    font-size: .78rem;
}

.pbt-table th,
.pbt-table td {
    padding: 10px 12px;
    text-align: right;
    border-bottom: 1px solid var(--pbt-line-soft);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.pbt-table th {
    color: var(--pbt-text);
    background: var(--pbt-panel-2);
    font: 700 .66rem var(--pbt-data);
    letter-spacing: .05em;
    text-transform: uppercase;
}

.pbt-table th:first-child,
.pbt-table td:first-child { text-align: left; }
.pbt-table tbody tr:last-child td { border-bottom: 0; }
.pbt-table .is-negative { color: var(--pbt-red); }
.pbt-table .is-positive { color: var(--pbt-green); }

.pbt-calendar-returns .pbt-table-wrap { overflow: hidden; }

.pbt-calendar-table {
    min-width: 0;
    table-layout: fixed;
}

.pbt-calendar-table th:first-child,
.pbt-calendar-table td:first-child { width: 32%; }

.pbt-correlation .pbt-table { min-width: 430px; }
.pbt-correlation .pbt-table th,
.pbt-correlation .pbt-table td { text-align: center; }
.pbt-correlation .pbt-table th:first-child,
.pbt-correlation .pbt-table td:first-child { text-align: left; }

.pbt-methodology {
    margin-top: 22px;
    padding: 15px 17px;
    color: var(--pbt-muted);
    background: var(--pbt-ink);
    border: 1px solid var(--pbt-line);
    font-size: .76rem;
    line-height: 1.6;
}

.pbt-methodology strong { color: var(--pbt-text); }

@media (max-width: 1050px) {
    .pbt-grid { grid-template-columns: 360px minmax(0, 1fr); }
    .pbt-panel { padding: 22px; }
}

@media (max-width: 820px) {
    .pbt-grid { grid-template-columns: 1fr; }
    .pbt-results-panel { overflow: visible; }
}

@media (max-width: 560px) {
    .pbt-calc { padding: 25px 14px 18px; }
    .pbt-panel { padding: 18px 14px; }
    .pbt-field-row,
    .pbt-custom-window { grid-template-columns: 1fr; gap: 0; }
    .pbt-holding-row { grid-template-columns: minmax(0, 1fr) 92px 38px; }
    .pbt-results-heading { display: block; }
    .pbt-period-tag { margin-top: 8px; text-align: left; }
    .pbt-input-pair { grid-template-columns: 1fr; }
    .pbt-input-actions { display: grid; }
    .pbt-copy-button,
    .pbt-transfer-link { justify-content: center; width: 100%; text-align: center; }
    .pbt-chart-wrap { height: 280px; padding: 8px; }
    .pbt-calendar-table th,
    .pbt-calendar-table td { padding: 9px 8px; }
}