:root {
    --gap-sm: 8px;
    --gap: 12px;
    --gap-lg: 16px
}

.filter-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px
}

.filter-container h1 {
    margin: 0;
    font-size: 24px;
    font-weight: 700;
    color: var(--text)
}

.filter-container > div:last-child {
    display: flex;
    gap: 10px;
    flex-wrap: wrap
}

.form-row.grid-2 {
    grid-template-columns:repeat(2, 1fr)
}

.form-row.grid-3 {
    grid-template-columns:repeat(3, 1fr)
}

.form-row.grid-4 {
    grid-template-columns:repeat(4, 1fr)
}

@media (max-width: 1080px) {
    .form-row.grid-4 {
        grid-template-columns:repeat(3, 1fr)
    }
}

@media (max-width: 860px) {
    .form-row.grid-3, .form-row.grid-4 {
        grid-template-columns:repeat(2, 1fr)
    }
}

@media (max-width: 640px) {
    .form-row.grid-2, .form-row.grid-3, .form-row.grid-4 {
        grid-template-columns:1fr
    }

    .filter-container {
        flex-direction: column;
        align-items: stretch
    }
}

.field {
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px
}

.field input::placeholder {
    color: var(--muted);
    opacity: 0.7
}

.field .grid.grid-2 {
    grid-template-columns:repeat(2, 1fr)
}

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px
}

.chip {
    border-radius: 20px;
    cursor: pointer;
    user-select: none;
    transition: all 0.15s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border: 1px solid var(--border);
    background: #181818
}

.chip input {
    display: none
}

.chip input:checked + *, .chip:has(input:checked) {
    background: linear-gradient(180deg, rgba(176, 176, 176, .18), rgba(154, 154, 154, .14));
    border-color: #3a3d47;
    box-shadow: inset 0 0 0 1px rgba(176, 176, 176, .35)
}

#tank-list {
    max-height: 340px;
    overflow: auto;
    border: 1px dashed var(--border);
    border-radius: 8px;
    background: var(--bg);
    padding: 8px
}

.tank-item {
    display: block;
    padding: 6px 8px;
    border-radius: 6px;
    line-height: 1.3;
    cursor: pointer;
    font-size: 13px;
    transition: background 0.15s ease
}

.tank-item input[type="checkbox"] {
    margin-right: 8px
}

#tank-search {
    width: 100%
}

@media (max-width: 768px) {
    .card {
        padding: 16px
    }

    .filter-container h1 {
        font-size: 20px
    }

    .chips {
        gap: 6px
    }

    .chip {
        padding: 6px 10px;
        font-size: 11px
    }

    #tank-list {
        max-height: 250px
    }

    .tank-item {
        padding: 4px 6px;
        font-size: 12px
    }
}