/* Hierarchical signal picker — shared across platform signal dropdowns */
.sig-picker {
    position: relative;
    width: 100%;
}

.sig-picker__native {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.sig-picker__trigger {
    display: block;
    width: 100%;
    text-align: left;
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text-100);
    background: var(--surface-panel);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-edge);
    padding: 10px 36px 10px 12px;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    position: relative;
}

.sig-picker__trigger::after {
    content: '';
    position: absolute;
    right: 12px;
    top: 50%;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--text-300);
    border-bottom: 2px solid var(--text-300);
    transform: translateY(-65%) rotate(45deg);
    pointer-events: none;
}

.sig-picker__trigger:hover {
    border-color: rgba(126, 155, 217, 0.45);
}

.sig-picker.is-open .sig-picker__trigger {
    border-color: rgba(126, 155, 217, 0.55);
}

.sig-picker__panel {
    position: absolute;
    z-index: var(--z-dropdown, 500);
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    max-height: min(420px, 60vh);
    overflow: auto;
    background: var(--surface-card, #12121c);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-edge);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
    padding: 8px 0;
}

.sig-picker__panel--floating {
    z-index: 1200;
}

.sig-picker__section + .sig-picker__section {
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px solid var(--line);
}

.sig-picker__section-title {
    font-size: 10px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
    padding: 6px 12px 4px;
}

.sig-picker__subgroup {
    margin: 0;
}

.sig-picker__subgroup-summary {
    list-style: none;
    cursor: pointer;
    font-size: 13px;
    color: var(--text-200);
    padding: 7px 12px 7px 28px;
    position: relative;
    user-select: none;
}

.sig-picker__subgroup-summary::-webkit-details-marker {
    display: none;
}

.sig-picker__subgroup-summary::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 50%;
    width: 6px;
    height: 6px;
    border-right: 1.5px solid var(--text-300);
    border-bottom: 1.5px solid var(--text-300);
    transform: translateY(-70%) rotate(-45deg);
    transition: transform 0.15s ease;
}

.sig-picker__subgroup[open] > .sig-picker__subgroup-summary::before {
    transform: translateY(-30%) rotate(45deg);
}

.sig-picker__subgroup-summary:hover {
    background: rgba(126, 155, 217, 0.08);
}

.sig-picker__count {
    color: var(--text-300);
    font-size: 12px;
}

.sig-picker__items {
    padding: 2px 0 4px;
}

.sig-picker__items--flat {
    padding: 2px 0 6px;
}

.sig-picker__item {
    display: block;
    width: 100%;
    text-align: left;
    border: none;
    background: transparent;
    color: var(--text-100);
    font-family: var(--font-sans);
    font-size: 13px;
    padding: 7px 12px 7px 28px;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sig-picker__item:hover,
.sig-picker__item:focus-visible {
    background: rgba(126, 155, 217, 0.12);
    outline: none;
}

.sig-picker__empty {
    padding: 12px;
    color: var(--text-300);
    font-size: 13px;
}

/* Wider panels for long signal names (e.g. backtest entry/exit pickers) */
.sig-picker--wide {
    min-width: min(100%, 520px);
    max-width: 640px;
}

.sig-picker--wide .sig-picker__panel {
    min-width: 520px;
    max-width: min(640px, 92vw);
}

.sig-picker--wide .sig-picker__item {
    white-space: normal;
    overflow: visible;
    text-overflow: unset;
    line-height: 1.35;
    padding-top: 8px;
    padding-bottom: 8px;
}