/* ---------------------------------- */
/* ЛЕВАЯ ПАНЕЛЬ (ЧАТЫ) - БАЗОВЫЕ СТИЛИ */
/* ---------------------------------- */

.chats-panel {
    width: 340px;
    background: var(--bg-surface);
    backdrop-filter: blur(16px);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    position: relative;
    border-radius: 0;
    box-shadow: var(--shadow-sm);
    transition: width 0.2s ease, background 0.2s;
    will-change: width;
}

.resize-handle {
    width: 6px;
    background: var(--primary);
    cursor: ew-resize;
    position: absolute;
    right: -3px;
    top: 0;
    bottom: 0;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.2s;
    border-radius: 4px;
}

.chats-panel:hover .resize-handle {
    opacity: 0.6;
}