/* ==========================================================================
   filters.css — Filter bar layout, dropdowns, labels, result count.
   Supports Mini Split, Multi Position Split, and Gas Pack filter bars.
   ========================================================================== */

/* --------------------------------------------------------------------------
   Filter Bar Container
   -------------------------------------------------------------------------- */
#filter-bar,
#mps-filter-bar,
#gp-filter-bar {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-2xl);
    overflow: hidden;
    animation: content-fade-in 0.35s ease-out;
}


/* --------------------------------------------------------------------------
   Filter Bar Header  (title + clear button)
   -------------------------------------------------------------------------- */
#filter-bar-header,
#mps-filter-bar-header,
#gp-filter-bar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg) var(--space-xl);
    border-bottom: 1px solid var(--color-border-light);
    background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-surface-alt) 100%);
}

#filter-title,
.filter-title-common {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    letter-spacing: -0.02em;
}

#btn-clear-filters,
.btn-clear-filters-common {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-brand);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--border-radius);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

#btn-clear-filters:hover,
.btn-clear-filters-common:hover {
    background-color: var(--color-brand-light);
}


/* --------------------------------------------------------------------------
   Filter Controls Grid
   -------------------------------------------------------------------------- */
#filter-controls,
#mps-filter-controls,
#gp-filter-controls {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-md);
    padding: var(--space-lg) var(--space-xl);
    background-color: var(--color-surface);
}


/* --------------------------------------------------------------------------
   Filter Group  (label + select wrapper)
   -------------------------------------------------------------------------- */
.filter-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}


/* --------------------------------------------------------------------------
   Filter Label
   -------------------------------------------------------------------------- */
.filter-label {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}


/* --------------------------------------------------------------------------
   Filter Select (dropdown) — enhanced styling
   -------------------------------------------------------------------------- */
.filter-select {
    height: 38px;
    padding: 0 var(--space-md);
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-muted);
    background-color: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: border-color var(--transition-base), box-shadow var(--transition-base), color var(--transition-base), background-color var(--transition-base), transform var(--transition-fast);
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%237E8698' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 32px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.filter-select:hover {
    border-color: var(--color-brand);
    background-color: var(--color-surface-alt);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(0, 84, 166, 0.08);
}

.filter-select:focus {
    outline: none;
    border-color: var(--color-brand);
    box-shadow: 0 0 0 3px rgba(0, 84, 166, 0.15), 0 2px 6px rgba(0, 84, 166, 0.1);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%230054A6' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
}

/* Active filter state — when a value is selected */
.filter-select.has-value {
    color: var(--color-text);
    border-color: var(--color-brand);
    background-color: rgba(0, 84, 166, 0.04);
    font-weight: var(--font-weight-semibold);
    box-shadow: 0 1px 3px rgba(0, 84, 166, 0.1);
}


/* --------------------------------------------------------------------------
   Result Count  (bottom bar)
   -------------------------------------------------------------------------- */
#filter-status,
#mps-filter-status,
#gp-filter-status {
    display: flex;
    align-items: center;
    padding: var(--space-md) var(--space-xl);
    border-top: 1px solid var(--color-border-light);
    background: linear-gradient(180deg, var(--color-surface-alt) 0%, var(--color-surface) 100%);
}

#filter-result-count,
#mps-filter-result-count,
#gp-filter-result-count {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-muted);
    letter-spacing: 0.01em;
}

/* When filters are active and have results */
.has-results {
    color: var(--color-brand) !important;
}

/* When filters are active but no results */
.no-results {
    color: var(--color-danger) !important;
}


/* --------------------------------------------------------------------------
   Hidden filter groups  (indoor units that aren't yet visible)
   -------------------------------------------------------------------------- */
.filter-group.hidden {
    display: none;
}


/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
    #filter-controls,
    #mps-filter-controls,
    #gp-filter-controls {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-sm);
        padding: var(--space-md) var(--space-lg);
    }

    #filter-bar-header,
    #mps-filter-bar-header,
    #gp-filter-bar-header {
        padding: var(--space-sm) var(--space-lg);
    }

    .filter-label {
        font-size: 9px;
    }

    .filter-select {
        height: 32px;
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 480px) {
    #filter-controls,
    #mps-filter-controls,
    #gp-filter-controls {
        grid-template-columns: 1fr;
    }
}