/* ============================================================
   EXPLAIN PANEL (DESKTOP)
   ============================================================ */
.left-stack {
    position: relative;
    min-height: 0;
}

.explain-overlay {
    position: absolute;
    top: 0;
    left: 100%;
    height: 100%;
    width: 0;
    overflow: hidden;
    transition: width 0.3s ease;
    z-index: 20;
    background: transparent !important;
}

    .explain-overlay.open {
        width: 600px;
    }

.explain-panel {
    background: var(--bg-surface);
    color: var(--text-primary);
    height: 100%;
    width: 600px;
    box-shadow: -4px 0 12px rgba(0,0,0,0.15);
    display: flex;
    flex-direction: column;
}

.explain-header {
    padding: 12px 16px;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-surface-alt);
}

.close-btn {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-primary);
}

.loading-spinner {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-status {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-left: 8px;
}

.explain-error {
    padding: 16px;
    background: rgba(255,0,0,0.12);
    border-left: 4px solid var(--accent-primary);
    color: var(--text-primary);
    display: flex;
    gap: 10px;
    align-items: center;
    font-size: 0.95rem;
}

.explain-content {
    padding: 16px;
    overflow-y: auto;
    flex-grow: 1;
    color: var(--text-primary);
}

.explain-footer {
    flex-shrink: 0;
    padding: 8px 16px;
    font-size: 0.72rem;
    font-style: italic;
    color: var(--text-secondary);
    background: var(--bg-surface-alt);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 6px;
}

.warn-icon {
    font-size: 0.85rem;
    color: var(--accent-primary);
    opacity: 0.9;
}

.disclaimer-text {
    line-height: 1.3;
}

.expert-dropdown {
    position: relative;
}

.expert-dropdown-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: var(--bg-surface-alt);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
}

html[data-bs-theme="dark"] .expert-dropdown-btn {
    background: var(--bg-surface);
    color: var(--text-primary);
}

.expert-dropdown-menu {
    position: absolute;
    right: 0;
    top: 38px;
    background: var(--bg-surface-alt);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    list-style: none;
    padding: 6px 0;
    margin: 0;
    min-width: 180px;
    z-index: 5000;
}

html[data-bs-theme="dark"] .expert-dropdown-menu {
    background: var(--bg-surface);
}

.expert-dropdown-menu li {
    padding: 6px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--text-primary);
}

    .expert-dropdown-menu li:hover {
        background: var(--menu-hover);
    }

.explain-header-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.explain-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.2);
    z-index: 19;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

    .explain-backdrop.open {
        opacity: 1;
        pointer-events: auto;
    }

/* ============================================================
   AI Banner Styling
   ============================================================ */
.ai-banner {
    min-height: 32px; /* match btn-sm height */
    padding: 0 12px; /* remove vertical padding */
    display: flex;
    align-items: center; /* center icon + text */
    border: 1px solid #ddd;
    border-radius: 4px;
}

/* Light mode */
[data-bs-theme="light"] .ai-banner {
    background: #fff8d6;
    border-color: #f0e2a0;
    color: #6b5a00;
}

[data-bs-theme="light"] .ai-banner-icon {
    color: #d4a300;
}

/* Dark mode */
[data-bs-theme="dark"] .ai-banner {
    background: rgba(255, 255, 200, 0.12);
    border-color: rgba(255, 230, 120, 0.25);
    color: #e7d98a;
}

[data-bs-theme="dark"] .ai-banner-icon {
    color: #ffd84d;
}

/* Optional: subtle pulse animation */
.ai-banner-icon {
    animation: pulseBulb 1.8s ease-in-out infinite;
}

@keyframes pulseBulb {
    0% {
        opacity: 0.7;
    }

    50% {
        opacity: 1;
    }

    100% {
        opacity: 0.7;
    }
}

/* ============================================================
   MOBILE & TABLET LAYOUT (<= 992px)
   ============================================================ */
@media (max-width: 992px) {
    .explain-overlay {
        position: fixed !important;
        top: var(--navbar-height) !important;
        left: 0 !important;
        width: 0 !important;
        height: calc(100vh - var(--navbar-height)) !important;
        overflow: hidden !important;
        z-index: 3000;
    }

        .explain-overlay.open {
            width: 100vw !important;
        }

    .explain-panel {
        display: flex;
        flex-direction: column;
        height: 100%;
        width: 100vw !important;
        background: var(--bg-surface) !important;
    }

    .explain-header {
        flex-shrink: 0;
        padding: 14px 18px;
        font-size: 1rem;
        background: var(--bg-surface-alt);
        border-bottom: 1px solid var(--border-color);
        z-index: 10;
    }

    .explain-content {
        flex-grow: 1;
        overflow-y: auto;
        padding: 16px;
    }

    .explain-footer {
        padding: 10px 16px;
        font-size: 0.78rem;
    }
}