/* ═══════════════════════════════════════════════════════════════
   MOBILE OVERLAYS — Full-screen page stack
   Only active on mobile (< 768px). Desktop untouched.
   ═══════════════════════════════════════════════════════════════ */

/* ── Overlay Container ────────────────────────────────────────── */

.cm-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--ui-panel, #1e1e2e);
    display: flex;
    flex-direction: column;
    z-index: 9000;
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
}

.cm-overlay--open {
    transform: translateY(0);
}

.cm-overlay--closing {
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
}

/* ── Overlay Header ───────────────────────────────────────────── */

.cm-overlay-header {
    display: flex;
    align-items: center;
    gap: 10px;
    height: 48px;
    padding: 0 12px;
    border-bottom: 1px solid var(--ui-panel-border, rgba(255, 255, 255, 0.08));
    flex-shrink: 0;
    padding-top: env(safe-area-inset-top, 0px);
}

.cm-overlay-back {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--ui-fg, #e0e0e0);
    font-size: 20px;
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.12s ease;
}

.cm-overlay-back:hover,
.cm-overlay-back:active {
    background: rgba(255, 255, 255, 0.08);
}

.cm-overlay-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--ui-fg, #e0e0e0);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ── Overlay Content ──────────────────────────────────────────── */

.cm-overlay-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    padding: 12px;
    padding-bottom: calc(12px + env(safe-area-inset-bottom, 0px));
}

/* ── Scrollbar styling ── */
.cm-overlay-content::-webkit-scrollbar {
    width: 4px;
}
.cm-overlay-content::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.12);
    border-radius: 2px;
}
.cm-overlay-content::-webkit-scrollbar-track {
    background: transparent;
}

/* ── Tablet: overlay with side panel ── */
@media (min-width: 768px) and (max-width: 1023px) {
    .cm-overlay {
        left: auto;
        width: 400px;
        border-left: 1px solid var(--ui-panel-border, rgba(255, 255, 255, 0.08));
        transform: translateX(100%);
    }
    .cm-overlay--open {
        transform: translateX(0);
    }
    .cm-overlay--closing {
        transform: translateX(100%);
    }
}

/* ── Light mode ── */
@media (prefers-color-scheme: light) {
    .cm-overlay {
        background: #F3F4F6;
        border-left-color: rgba(0, 0, 0, 0.08);
    }
    .cm-overlay-header {
        border-bottom-color: rgba(0, 0, 0, 0.08);
    }
    .cm-overlay-back {
        color: #1a1a2e;
    }
    .cm-overlay-back:hover,
    .cm-overlay-back:active {
        background: rgba(0, 0, 0, 0.04);
    }
    .cm-overlay-title {
        color: #1a1a2e;
    }
    .cm-overlay-content::-webkit-scrollbar-thumb {
        background: rgba(0, 0, 0, 0.12);
    }
}