/* =============================================
   Canvas-style message layout (ChatGPT / Gemini)
   ============================================= */

/* --- Row container --- */
.message-row {
    animation: fadeInUp var(--transition-slow) ease;
    padding: var(--space-2) 0;
}

.message-row+.message-row {
    border-top: 1px solid var(--border-subtle);
}

/* Alternating background for assistant rows */
.message-row.assistant {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-4) var(--space-3);
}

.message-row.user {
    padding: var(--space-4) var(--space-3);
}

.message-row.error {
    padding: var(--space-4) var(--space-3);
}

/* --- Inner layout: icon + body --- */
.message-inner {
    display: flex;
    gap: var(--space-4);
    align-items: flex-start;
    max-width: 100%;
}

/* --- Role Icon --- */
.role-icon-wrapper {
    flex-shrink: 0;
    padding-top: 2px;
}

.role-icon {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
}

.role-icon.assistant-icon {
    background: var(--accent-gradient);
    color: white;
}

.role-icon.user-icon {
    background: var(--bg-elevated);
    border: 1px solid var(--border-medium);
    color: var(--text-secondary);
}

.role-icon.error-icon {
    background: var(--error-bg);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--error);
}

/* --- Message Body --- */
.message-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

/* --- Text / Markdown --- */
.message-text {
    font-size: var(--text-base);
    line-height: 1.75;
    color: var(--text-primary);
    word-break: break-word;
}

/* Markdown typography inside assistant messages */
.message-row.assistant .message-text p {
    margin-bottom: 0.75em;
}

.message-row.assistant .message-text p:last-child {
    margin-bottom: 0;
}

.message-row.assistant .message-text strong {
    color: var(--text-primary);
    font-weight: 600;
}

.message-row.assistant .message-text em {
    color: var(--text-secondary);
    font-style: italic;
}

.message-row.assistant .message-text h1,
.message-row.assistant .message-text h2,
.message-row.assistant .message-text h3,
.message-row.assistant .message-text h4 {
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 1.25em;
    margin-bottom: 0.5em;
}

.message-row.assistant .message-text h1 {
    font-size: 1.4em;
}

.message-row.assistant .message-text h2 {
    font-size: 1.25em;
}

.message-row.assistant .message-text h3 {
    font-size: 1.1em;
}

.message-row.assistant .message-text ul,
.message-row.assistant .message-text ol {
    padding-left: 1.5em;
    margin-bottom: 0.75em;
}

.message-row.assistant .message-text li {
    margin-bottom: 0.35em;
}

.message-row.assistant .message-text li::marker {
    color: var(--accent-secondary);
}

.message-row.assistant .message-text code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--bg-elevated);
    padding: 0.15em 0.4em;
    border-radius: var(--radius-sm);
    color: var(--accent-tertiary);
}

.message-row.assistant .message-text pre {
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    overflow-x: auto;
    margin-bottom: 0.75em;
}

.message-row.assistant .message-text pre code {
    background: transparent;
    padding: 0;
    color: var(--text-primary);
}

.message-row.assistant .message-text blockquote {
    border-left: 3px solid var(--accent-primary);
    padding-left: var(--space-4);
    color: var(--text-secondary);
    margin-bottom: 0.75em;
}

.message-row.assistant .message-text a {
    color: var(--accent-secondary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.message-row.assistant .message-text a:hover {
    color: var(--accent-tertiary);
}

/* User message style — slightly dimmer */
.message-row.user .message-text {
    color: var(--text-primary);
}

/* Error message style */
.message-row.error .message-text {
    color: var(--error);
}

/* --- Images --- */
.message-images {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.image-thumb {
    position: relative;
    width: 100px;
    height: 100px;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-subtle);
    cursor: pointer;
    background: var(--bg-tertiary);
    padding: 0;
    transition: all var(--transition-base);
}

.image-thumb:hover {
    border-color: var(--accent-primary);
    transform: scale(1.05);
}

.image-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-page {
    position: absolute;
    bottom: var(--space-1);
    right: var(--space-1);
    padding: var(--space-1) var(--space-2);
    background: rgba(0, 0, 0, 0.7);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    color: white;
}

/* --- Sources --- */
.message-sources {
    margin-top: var(--space-1);
}

.sources-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--bg-glass);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-base);
}

.sources-toggle:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
}

.sources-toggle .chevron {
    transition: transform var(--transition-base);
}

.sources-toggle .chevron.open {
    transform: rotate(180deg);
}

.sources-list {
    margin-top: var(--space-2);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    animation: fadeIn var(--transition-base) ease;
}

.source-item {
    padding: var(--space-3);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
}

.source-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.source-num {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-primary);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
}

.source-file {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.source-score {
    font-size: var(--text-xs);
    color: var(--success);
    padding: var(--space-1) var(--space-2);
    background: var(--success-bg);
    border-radius: var(--radius-full);
}

.source-content {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* --- Image Modal --- */
.image-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn var(--transition-fast) ease;
}

.image-modal-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    animation: fadeInUp var(--transition-base) ease;
}

.modal-close {
    position: absolute;
    top: calc(-1 * var(--space-10));
    right: 0;
    color: white;
}

.image-modal-content img {
    max-width: 100%;
    max-height: 80vh;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.image-caption {
    text-align: center;
    color: var(--text-secondary);
    margin-top: var(--space-3);
    font-size: var(--text-sm);
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .message-inner {
        gap: var(--space-3);
    }

    .image-thumb {
        width: 80px;
        height: 80px;
    }
}