/* ===== Formulas Gizmo - Full Page ===== */

.gizmo-formulas-full {
    max-width: 800px;
    margin: 0 auto;
}

/* === Categories === */
.gizmo-formulas-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    margin-bottom: 1rem;
}

.gizmo-formulas-cat-btn {
    padding: 0.4rem 0.9rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.gizmo-formulas-cat-btn:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.gizmo-formulas-cat-btn--active {
    background-color: var(--accent-primary);
    color: #fff;
    border-color: var(--accent-primary);
}

/* === Favorites === */
.gizmo-formulas-favorites {
    margin-bottom: 1rem;
}

.gizmo-formulas-favorites__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.gizmo-formulas-favorites__title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.gizmo-formulas-favorites__list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.gizmo-formulas-fav-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.3rem 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-card);
    font-size: 0.75rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: border-color 0.2s;
}

.gizmo-formulas-fav-chip:hover {
    border-color: var(--accent-primary);
}

.gizmo-formulas-fav-chip__remove {
    color: var(--danger);
    font-weight: 700;
    font-size: 0.8125rem;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.15s;
}

.gizmo-formulas-fav-chip__remove:hover {
    opacity: 1;
}

/* === Picker Grid === */
.gizmo-formulas-picker {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.gizmo-formulas-picker__card {
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-card);
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.gizmo-formulas-picker__card:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.gizmo-formulas-picker__card--active {
    border-color: var(--accent-primary);
    background-color: var(--bg-secondary);
    box-shadow: 0 0 0 2px var(--accent-primary);
}

.gizmo-formulas-picker__card-name {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
}

.gizmo-formulas-picker__card-eq {
    font-size: 0.6875rem;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
}

/* === Formula Panel === */
.gizmo-formulas-panel {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1rem;
}

.gizmo-formulas-panel__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
    gap: 0.5rem;
}

.gizmo-formulas-panel__name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.gizmo-formulas-panel__desc {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
    margin-top: 0.15rem;
}

.gizmo-formulas-panel__actions {
    display: flex;
    gap: 0.4rem;
    flex-shrink: 0;
}

.gizmo-formulas-panel__fav {
    padding: 0.3rem 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-card);
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
}

.gizmo-formulas-panel__fav:hover {
    border-color: var(--warning);
    color: var(--warning);
}

.gizmo-formulas-panel__fav--active {
    color: var(--warning);
    border-color: var(--warning);
}

.gizmo-formulas-panel__clear {
    padding: 0.3rem 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--bg-card);
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
}

.gizmo-formulas-panel__clear:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* === Fields Grid === */
.gizmo-formulas-panel__fields {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.6rem;
}

.gizmo-formulas-field {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.gizmo-formulas-field label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.gizmo-formulas-field__unit {
    font-size: 0.6875rem;
    opacity: 0.7;
}

.gizmo-formulas-field input,
.gizmo-formulas-field select {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9375rem;
    color: var(--text-primary);
    background-color: var(--bg-card);
    width: 100%;
    box-sizing: border-box;
}

.gizmo-formulas-field input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.15);
}

.gizmo-formulas-field select {
    cursor: pointer;
}

.gizmo-formulas-field--result input {
    color: var(--accent-primary);
    font-weight: 600;
    background-color: var(--bg-secondary);
}

.gizmo-formulas-field--solved input {
    border-color: var(--accent-primary);
    background-color: var(--bg-secondary);
}

/* === Result Summary === */
.gizmo-formulas-panel__result {
    margin-top: 0.75rem;
    padding: 0.6rem 0.75rem;
    background-color: var(--bg-card);
    border-radius: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-align: center;
    min-height: 1.2em;
}

/* === History === */
.gizmo-formulas-history {
    margin-top: 1rem;
}

.gizmo-formulas-history__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.gizmo-formulas-history__title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.gizmo-formulas-history__clear {
    padding: 0.2rem 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-secondary);
    color: var(--danger);
    font-size: 0.6875rem;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
}

.gizmo-formulas-history__clear:hover {
    background-color: var(--danger);
    color: #fff;
    border-color: var(--danger);
}

.gizmo-formulas-history__list {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    max-height: 200px;
    overflow-y: auto;
}

.gizmo-formulas-history__item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.5rem;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background-color 0.15s;
}

.gizmo-formulas-history__item:hover {
    background-color: var(--bg-secondary);
}

.gizmo-formulas-history__item-name {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    flex-shrink: 0;
}

.gizmo-formulas-history__item-summary {
    font-size: 0.6875rem;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    min-width: 0;
}

.gizmo-formulas-history__item-time {
    font-size: 0.6875rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.gizmo-formulas-history__empty {
    text-align: center;
    padding: 1rem;
    color: var(--text-secondary);
    font-style: italic;
    font-size: 0.8125rem;
}

/* === Responsive === */
@media (max-width: 575px) {
    .gizmo-formulas-panel__fields {
        grid-template-columns: 1fr;
    }

    .gizmo-formulas-picker {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }

    .gizmo-formulas-panel__header {
        flex-direction: column;
    }

    .gizmo-formulas-panel__actions {
        align-self: flex-end;
    }
}