/**
 * assets/css/kon-filter-sidebar.css
 * Shared collapsible filter sidebar — used on every archive/taxonomy
 * page (Places, Hotels, Taxi, Businesses, and the generic taxonomy
 * fallback). Replaces the old horizontal filter-bar-across-the-top
 * pattern with a proper sidebar: persistent + collapsible on desktop,
 * off-canvas slide-in on mobile.
 *
 * Markup contract (see kon_render_filter_sidebar_open()/close() in
 * functions.php):
 *   .kon-archive-layout                 (grid: sidebar + main)
 *     .kon-filter-toggle                 (mobile-only "Filters" button)
 *     .kon-filter-sidebar                (the sidebar itself)
 *       .kon-filter-sidebar__header
 *       .kon-filter-sidebar__collapse    (desktop collapse arrow)
 *       form.kon-filter-sidebar__form
 *         .kon-filter-section (repeatable)
 *           button.kon-filter-section__toggle
 *           .kon-filter-section__body
 *         .kon-filter-sidebar__actions
 *     .kon-filter-backdrop               (mobile overlay)
 *     .kon-archive-main                  (results column)
 */

.kon-archive-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    align-items: start;
    gap: var(--kon-space-xl, 32px);
}

.kon-archive-main {
    min-width: 0; /* prevents grid blowout with long card content */
}
.kon-archive-main__toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--kon-space-md, 16px);
    margin-bottom: var(--kon-space-lg, 20px);
}

/* -------------------------------------------------------------
   SIDEBAR
   ------------------------------------------------------------- */
.kon-filter-sidebar {
    position: sticky;
    top: calc(var(--kon-header-h, 64px) + 16px);
    max-height: calc(100vh - var(--kon-header-h, 64px) - 32px);
    overflow-y: auto;
    background: var(--kon-white, #fff);
    border: 1px solid var(--kon-border, #e5e5e0);
    border-radius: var(--kon-radius-md, 12px);
    box-shadow: var(--kon-shadow-card, 0 2px 10px -4px rgba(20,35,10,.12));
    transition: width .25s ease, opacity .2s ease, padding .25s ease;
}

.kon-filter-sidebar__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--kon-space-md, 16px) var(--kon-space-lg, 20px);
    border-bottom: 1px solid var(--kon-border, #e5e5e0);
}
.kon-filter-sidebar__header h2 {
    margin: 0;
    font-size: 1rem;
    font-family: var(--kon-font-display);
}
.kon-filter-sidebar__close {
    display: none;
    background: none;
    border: none;
    font-size: 1.2rem;
    line-height: 1;
    cursor: pointer;
    color: var(--kon-slate-mid);
}

.kon-filter-sidebar__collapse {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    font-size: .78rem;
    font-weight: 600;
    color: var(--kon-slate-mid);
    cursor: pointer;
    padding: 0;
}
.kon-filter-sidebar__collapse svg { transition: transform .2s ease; }

.kon-filter-sidebar__form { padding: var(--kon-space-md, 16px) var(--kon-space-lg, 20px); }

/* Collapsible sections (accordion) */
.kon-filter-section { border-bottom: 1px solid var(--kon-border, #e5e5e0); padding: var(--kon-space-sm, 10px) 0; }
.kon-filter-section:last-of-type { border-bottom: none; }

.kon-filter-section__toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    background: none;
    border: none;
    padding: 6px 0;
    font-size: .88rem;
    font-weight: 700;
    color: var(--kon-ink);
    cursor: pointer;
    text-align: left;
}
.kon-filter-section__toggle .kon-filter-section__chevron {
    transition: transform .18s ease;
    flex-shrink: 0;
    color: var(--kon-slate-mid);
}
.kon-filter-section.is-collapsed .kon-filter-section__chevron { transform: rotate(-90deg); }
.kon-filter-section.is-collapsed .kon-filter-section__body { display: none; }

.kon-filter-section__body { padding-top: 8px; }
.kon-filter-select {
    width: 100%;
    padding: 8px 10px;
    border: 1.5px solid var(--kon-border-strong, #c7d0ca);
    border-radius: var(--kon-radius-sm, 6px);
    font-size: .85rem;
    background: var(--kon-white, #fff);
    color: var(--kon-ink);
}

/* Term link/checkbox-style list (used for chip-style single-select filters
   rendered as a vertical list inside the sidebar) */
.kon-filter-taglist { display: flex; flex-direction: column; gap: 2px; }
.kon-filter-taglist a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 8px;
    border-radius: var(--kon-radius-sm, 6px);
    font-size: .85rem;
    color: var(--kon-ink);
    transition: background-color .15s ease;
}
.kon-filter-taglist a:hover { background: var(--kon-pine-light, #eef5f0); }
.kon-filter-taglist a.is-active {
    background: var(--kon-pine, #1b3a2b);
    color: #fff;
    font-weight: 600;
}
.kon-filter-taglist a .kon-filter-taglist__count {
    font-size: .75rem;
    opacity: .7;
}

.kon-filter-sidebar__actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-top: var(--kon-space-md, 16px);
}
.kon-filter-sidebar__actions .kon-btn { width: 100%; justify-content: center; }

.kon-filter-sidebar__count {
    font-size: .78rem;
    color: var(--kon-slate-mid);
    margin: 0 0 var(--kon-space-sm, 10px);
}

/* -------------------------------------------------------------
   DESKTOP COLLAPSE (shrinks sidebar to a thin rail, results take
   the full width; state remembered via localStorage in JS)
   ------------------------------------------------------------- */
.kon-archive-layout.is-sidebar-collapsed {
    grid-template-columns: 0 1fr;
}
.kon-archive-layout.is-sidebar-collapsed .kon-filter-sidebar {
    width: 0;
    padding: 0;
    border-width: 0;
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
}
.kon-archive-layout.is-sidebar-collapsed .kon-filter-sidebar__collapse svg { transform: rotate(180deg); }

/* Rail re-open button, only visible while collapsed */
.kon-filter-reopen {
    display: none;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--kon-pine, #1b3a2b) 0%, var(--kon-pine-mid, #2d5a44) 100%);
    color: #fff;
    border: none;
    border-radius: var(--kon-radius-pill, 999px);
    padding: 10px 18px;
    font-size: .82rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 16px -4px rgba(27, 58, 43, .4);
    margin-bottom: var(--kon-space-md, 16px);
    transition: transform .15s ease, box-shadow .15s ease;
}
.kon-filter-reopen:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px -4px rgba(27, 58, 43, .5);
}
.kon-archive-layout.is-sidebar-collapsed .kon-filter-reopen { display: inline-flex; }

/* -------------------------------------------------------------
   MOBILE: off-canvas
   ------------------------------------------------------------- */
.kon-filter-toggle {
    display: none;
    align-items: center;
    gap: 10px;
    width: 100%;
    background: linear-gradient(135deg, var(--kon-pine, #1b3a2b) 0%, var(--kon-pine-mid, #2d5a44) 100%);
    border: none;
    border-radius: var(--kon-radius-pill, 999px);
    padding: 13px 20px;
    font-size: .92rem;
    font-weight: 700;
    color: #fff;
    cursor: pointer;
    margin-bottom: var(--kon-space-md, 16px);
    box-shadow: 0 4px 16px -4px rgba(27, 58, 43, .45);
    transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.kon-filter-toggle svg { flex-shrink: 0; }
.kon-filter-toggle:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px -4px rgba(27, 58, 43, .55);
}
.kon-filter-toggle:active { transform: translateY(0); }
.kon-filter-toggle__count {
    background: var(--kon-amber, #d98e2b);
    color: #fff;
    font-size: .72rem;
    font-weight: 800;
    border-radius: 999px;
    min-width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 6px;
    margin-left: auto;
    box-shadow: 0 0 0 2px rgba(255,255,255,.35);
}

.kon-filter-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 25, 15, .45);
    z-index: 1400;
}

@media (max-width: 900px) {
    .kon-archive-layout,
    .kon-archive-layout.is-sidebar-collapsed {
        grid-template-columns: 1fr;
    }
    .kon-filter-toggle { display: flex; }
    .kon-filter-sidebar__close { display: block; }
    .kon-filter-sidebar__collapse { display: none; }
    .kon-filter-reopen { display: none !important; }

    .kon-filter-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        width: min(85vw, 320px);
        max-height: 100vh;
        border-radius: 0;
        transform: translateX(-100%);
        transition: transform .25s ease;
        z-index: 1500;
    }
    .kon-filter-sidebar.is-open { transform: translateX(0); }
    .kon-filter-backdrop.is-open { display: block; }
}

@media (prefers-reduced-motion: reduce) {
    .kon-filter-sidebar,
    .kon-filter-section__chevron,
    .kon-filter-sidebar__collapse svg {
        transition: none;
    }
}