/* ===== PANEL ===== */
mypanel {
    display: block;
    border: 1px solid var(--zen-theme-border, #dcdcdc);
    border-radius: 6px;
    background: var(--zen-theme-surface, #fff);
    overflow: hidden;
    font-family: Arial, sans-serif;
    width:100%;
}

    /* ===== HEADER ===== */
    mypanel > panelheader {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        padding: 0.2rem;
        cursor: pointer;
        user-select: none;
        background: var(--zen-theme-surface-muted, linear-gradient(#f9f9f9, #eeeeee));
        min-height:36px
    }

        /* Hover */
        mypanel > panelheader:hover {
            background: var(--zen-theme-hover-bg, linear-gradient(#f0f0f0, #e5e5e5));
        }

/* ===== CHEVRON ===== */
panelcollapse {
    width: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

    panelcollapse i {
        transition: transform 0.3s ease;
        color: var(--zen-theme-text-muted, #555);
    }

/* ===== TITLE ===== */
paneltitle {
    font-weight: 600;
    flex: 1;
    color: var(--zen-theme-text, #333);
}

/* ===== CONTENT ===== */
mypanel > panelcontainer {
    overflow: hidden;
    max-height: 1000px; /* hauteur max large */
    opacity: 1;
    padding: 0.5rem;
    transition: max-height 0.35s ease, opacity 0.25s ease, padding 0.25s ease;
    display:flex
}

/* ===== COLLAPSED STATE ===== */
mypanel.collapsed > panelcontainer {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
}

/* Chevron tourné à 90° */
mypanel.collapsed panelcollapse i {
    transform: rotate(-90deg);
}

/* ZEN_PANEL_HEADER_COMPACT_R1
   Desktop only.
   Compacts only the vertical geometry of the generic Zen panel header.
   panelcontainer, collapse behavior and panel business content are untouched.
*/
@media (min-width: 761px) {
    mypanel > panelheader {
        box-sizing: border-box;
        min-height: 32px;
        padding-top: 1px;
        padding-bottom: 1px;
    }
}

/* ZEN_PANEL_HEADER_COMPACT_R1A
   R1 tightened: desktop panel header 26px, vertical padding 1px.
   panelcontainer and collapse behavior remain unchanged.
*/

/* ZEN_PANEL_HEADER_COMPACT_R1B
   Real shrink fix.
   Solvea legacy CSS gives panelTitle and panelCollapse min-height:38px.
   Those children were forcing a 40px header even after R1A set the parent
   to 26px (1px top + 1px bottom padding).
   Desktop only: let the generic panel header own vertical sizing.
*/
@media (min-width: 761px) {
    mypanel > panelheader > paneltitle,
    mypanel > panelheader > panelcollapse {
        min-height: 0;
    }
}

/* ZEN_PANEL_HEADER_COMPACT_R1C
   Final desktop tuning: real panelheader target = 32px.
   R1B child min-height release stays in place so legacy 38px children
   cannot force the header back to 40px.
*/