.etc-calc {
    --etc-ink: #090d13;
    --etc-panel: #121923;
    --etc-panel-2: #192231;
    --etc-line: #303a49;
    --etc-line-soft: #26303d;
    --etc-text: #f1f0e9;
    --etc-muted: #9da8b8;
    --etc-faint: #738096;
    --etc-orange: #e17a00;
    --etc-orange-hover: #f28b12;
    --etc-teal: #61c2d1;
    --etc-green: #62c08a;
    --etc-red: #e06a67;
    --etc-display: Georgia, "Times New Roman", serif;
    --etc-body: Arial, Helvetica, sans-serif;
    --etc-data: "Courier New", Courier, monospace;
    margin: 2rem 0;
    padding: 36px 38px 30px;
    color: var(--etc-text);
    background: #0d121a;
    border: 1px solid var(--etc-line);
    border-top: 4px solid var(--etc-orange);
    font-family: var(--etc-body);
}

.etc-calc *,
.etc-calc *::before,
.etc-calc *::after { box-sizing: border-box; }

.etc-header {
    max-width: 860px;
    margin-bottom: 30px;
    padding-bottom: 26px;
    border-bottom: 1px solid var(--etc-line);
}

.etc-eyebrow {
    display: block;
    margin-bottom: 12px;
    color: var(--etc-orange);
    font: 700 .71rem/1.2 var(--etc-data);
    letter-spacing: .16em;
}

.etc-header h2,
.etc-results-panel h3,
.etc-fund-card h4 {
    color: var(--etc-text);
    font-family: var(--etc-display);
}

.etc-header h2 {
    margin: 0 0 10px;
    font-size: clamp(2rem, 4vw, 3.2rem);
    line-height: 1.02;
}

.etc-header p {
    max-width: 760px;
    margin: 0;
    color: var(--etc-muted);
    font-size: 1.02rem;
    line-height: 1.55;
}

.etc-grid {
    display: grid;
    grid-template-columns: 340px minmax(0, 1fr);
    border: 1px solid var(--etc-line);
}

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

.etc-input-panel { border-right: 1px solid var(--etc-line); }

.etc-panel-title {
    display: flex;
    gap: 8px;
    margin: 0 0 19px;
    padding-bottom: 12px;
    color: var(--etc-text);
    border-bottom: 1px solid var(--etc-line);
    font: 700 .76rem/1.2 var(--etc-data);
    letter-spacing: .12em;
    text-transform: uppercase;
}

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

.etc-intro,
.etc-placeholder p,
.etc-section-heading p,
.etc-result-note,
.etc-field small {
    color: var(--etc-muted);
    font-size: .79rem;
    line-height: 1.55;
}

.etc-intro { margin: 0 0 18px; }

.etc-symbol-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 40px;
    gap: 8px;
    align-items: end;
    margin-bottom: 12px;
}

.etc-symbol-field,
.etc-symbol-input-wrap { min-width: 0; }
.etc-symbol-input-wrap { position: relative; }

.etc-symbol-field > label,
.etc-field > span:first-child {
    display: block;
    margin-bottom: 7px;
    color: var(--etc-text);
    font-size: .74rem;
    font-weight: 600;
}

.etc-calc input,
.etc-calc select {
    width: 100%;
    min-height: 46px;
    padding: 11px 13px;
    color: var(--etc-text);
    background: var(--etc-ink);
    border: 1px solid var(--etc-line);
    border-radius: 0;
    outline: none;
    font: .91rem/1.2 var(--etc-data);
}

.etc-calc select { font-family: var(--etc-body); }

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

.etc-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: #080c12;
    border: 1px solid var(--etc-line);
    box-shadow: 0 16px 32px rgba(0, 0, 0, .4);
}

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

.etc-symbol-option {
    display: grid;
    grid-template-columns: minmax(95px, auto) minmax(0, 1fr);
    gap: 12px;
    width: 100%;
    padding: 10px 12px;
    color: var(--etc-text);
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--etc-line-soft);
    border-radius: 0;
    font-family: var(--etc-body);
    text-align: left;
    cursor: pointer;
}

.etc-symbol-option:last-child { border-bottom: 0; }
.etc-symbol-option:hover,
.etc-symbol-option.is-active { background: var(--etc-panel-2); }

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

.etc-symbol-option strong {
    display: block;
    color: var(--etc-teal);
    font: 700 .78rem/1.25 var(--etc-data);
}

.etc-symbol-option small {
    display: block;
    margin-top: 3px;
    color: var(--etc-faint);
    font-size: .64rem;
}

.etc-symbol-option em {
    align-self: center;
    overflow: hidden;
    color: var(--etc-muted);
    font-size: .72rem;
    font-style: normal;
    line-height: 1.35;
    text-overflow: ellipsis;
}

.etc-symbol-status {
    padding: 12px;
    color: var(--etc-faint);
    font-size: .71rem;
    line-height: 1.45;
}

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

.etc-remove:hover:not(:disabled) { color: var(--etc-red); border-color: var(--etc-red); }
.etc-remove:disabled { opacity: .3; cursor: not-allowed; }

.etc-add-button,
.etc-copy-button,
.etc-simulator-link {
    min-height: 40px;
    padding: 9px 12px;
    color: var(--etc-teal);
    background: transparent;
    border: 1px solid var(--etc-teal);
    border-radius: 0;
    font: 700 .73rem var(--etc-body);
    text-decoration: none;
    cursor: pointer;
}

.etc-add-button { margin: 2px 0 22px; }
.etc-add-button:disabled { opacity: .4; cursor: not-allowed; }

.etc-field {
    display: block;
    margin-bottom: 18px;
    padding-top: 18px;
    border-top: 1px solid var(--etc-line);
}

.etc-field small { display: block; margin-top: 6px; }

.etc-run-button {
    width: 100%;
    min-height: 52px;
    margin-top: 4px;
    color: #0b0d10;
    background: var(--etc-orange);
    border: 0;
    border-radius: 0;
    font: 800 .77rem var(--etc-data);
    letter-spacing: .1em;
    text-transform: uppercase;
    cursor: pointer;
}

.etc-run-button:hover { background: var(--etc-orange-hover); }
.etc-run-button:disabled { opacity: .65; cursor: wait; }

.etc-error {
    margin: 0 0 12px;
    padding: 11px 12px;
    color: #ffd6d4;
    background: #2a171b;
    border-left: 3px solid var(--etc-red);
    font-size: .76rem;
    line-height: 1.45;
}

.etc-source-note,
.etc-methodology {
    margin-top: 18px;
    padding: 14px 15px;
    color: var(--etc-muted);
    background: var(--etc-ink);
    border: 1px solid var(--etc-line);
    font-size: .74rem;
    line-height: 1.6;
}

.etc-source-note { border-left: 3px solid var(--etc-teal); }
.etc-source-note strong,
.etc-methodology strong { color: var(--etc-text); }

.etc-placeholder {
    padding: 38px 0 14px;
}

.etc-placeholder h3 {
    margin: 0 0 8px;
    font-size: 1.3rem;
}

.etc-placeholder p { max-width: 560px; margin: 0; }

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

.etc-results-heading h3 {
    margin: 0 0 4px;
    font-size: 1.45rem;
}

.etc-results-heading p { margin: 0; color: var(--etc-muted); font-size: .78rem; }

.etc-period-tag {
    color: var(--etc-teal);
    font: 700 .73rem/1.5 var(--etc-data);
    text-align: right;
}

.etc-history-warning {
    margin-top: 18px;
    padding: 13px 15px;
    color: var(--etc-muted);
    background: #17130d;
    border: 1px solid #49351d;
    border-left: 3px solid var(--etc-orange);
    font-size: .76rem;
    line-height: 1.55;
}

.etc-history-warning strong { color: var(--etc-text); }

.etc-history-warning.is-critical {
    background: #1c100d;
    border-color: #67301f;
    border-left-color: #e06a45;
}

.etc-timeframes {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 6px;
    margin: 20px 0 22px;
    padding: 8px;
    background: var(--etc-ink);
    border: 1px solid var(--etc-line);
}

.etc-timeframe {
    min-height: 40px;
    padding: 7px 6px;
    color: var(--etc-muted);
    background: transparent;
    border: 1px solid transparent;
    border-radius: 0;
    font: 700 .7rem var(--etc-data);
    cursor: pointer;
}

.etc-timeframe:hover:not(:disabled) { color: var(--etc-text); border-color: var(--etc-line); }
.etc-timeframe.is-active { color: #0b0d10; background: var(--etc-teal); }
.etc-timeframe:disabled { opacity: .3; cursor: not-allowed; }

.etc-fund-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.etc-fund-card {
    min-width: 0;
    padding: 17px;
    background: var(--etc-ink);
    border: 1px solid var(--etc-line);
    border-top: 3px solid var(--etc-series-color, var(--etc-teal));
}

.etc-fund-card-header {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 15px;
}

.etc-fund-card h4 { margin: 0; font-size: 1.1rem; }
.etc-fund-card-header p {
    overflow: hidden;
    margin: 3px 0 0;
    color: var(--etc-faint);
    font-size: .7rem;
    line-height: 1.35;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.etc-series-dot {
    flex: 0 0 auto;
    width: 10px;
    height: 10px;
    margin-top: 5px;
    background: var(--etc-series-color, var(--etc-teal));
}

.etc-metric-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 11px 14px;
}

.etc-metric span {
    display: block;
    margin-bottom: 3px;
    color: var(--etc-faint);
    font-size: .65rem;
    letter-spacing: .03em;
    text-transform: uppercase;
}

.etc-metric strong {
    color: var(--etc-text);
    font: 700 .94rem var(--etc-data);
    font-variant-numeric: tabular-nums;
}

.etc-metric strong.is-positive { color: var(--etc-green); }
.etc-metric strong.is-negative { color: var(--etc-red); }
.etc-metric.is-volatility strong { color: var(--etc-teal); }

.etc-fund-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 15px;
    padding-top: 13px;
    border-top: 1px solid var(--etc-line-soft);
}

.etc-copy-button,
.etc-simulator-link { min-height: 36px; padding: 7px 10px; font-size: .68rem; }
.etc-simulator-link { display: inline-flex; align-items: center; color: #0b0d10; background: var(--etc-teal); }

.etc-result-section {
    margin-top: 23px;
    padding-top: 20px;
    border-top: 1px solid var(--etc-line);
}

.etc-section-heading h3 { margin: 0 0 4px; font-size: 1.15rem; }
.etc-section-heading p { margin: 0; }

.etc-chart-wrap {
    position: relative;
    height: 340px;
    margin-top: 13px;
    padding: 12px;
    background: var(--etc-ink);
    border: 1px solid var(--etc-line);
}

.etc-observations {
    margin: 13px 0 0;
    padding: 0;
    list-style: none;
    border-top: 1px solid var(--etc-line);
}

.etc-observations li {
    position: relative;
    min-height: 46px;
    padding: 12px 0 12px 42px;
    color: var(--etc-muted);
    border-bottom: 1px solid var(--etc-line-soft);
    font-size: .79rem;
    line-height: 1.55;
}

.etc-observations li::before {
    content: attr(data-number);
    position: absolute;
    top: 14px;
    left: 0;
    color: var(--etc-orange);
    font: 700 .68rem var(--etc-data);
}

.etc-observations strong { color: var(--etc-text); }

@media (max-width: 1050px) {
    .etc-grid { grid-template-columns: 320px minmax(0, 1fr); }
    .etc-panel { padding: 22px; }
}

@media (max-width: 820px) {
    .etc-grid { grid-template-columns: 1fr; }
    .etc-input-panel { border-right: 0; border-bottom: 1px solid var(--etc-line); }
}

@media (max-width: 560px) {
    .etc-calc { padding: 25px 14px 18px; }
    .etc-panel { padding: 18px 14px; }
    .etc-results-heading { display: block; }
    .etc-period-tag { margin-top: 8px; text-align: left; }
    .etc-timeframes { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .etc-fund-grid { grid-template-columns: 1fr; }
    .etc-chart-wrap { height: 275px; padding: 8px; }
    .etc-fund-actions { display: grid; }
    .etc-copy-button,
    .etc-simulator-link { justify-content: center; width: 100%; text-align: center; }
}