/**
 * Chat History Page Specific Styles
 */

/* Chat History Header */
.chats-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-xl);
    gap: var(--space-md);
}

.chats-header-left {
    flex: 1;
}

.chats-title {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin: 0 0 var(--space-xs) 0;
}

.chats-subtitle {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    margin: 0;
}

/* Search */
.chats-search {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
    transition: var(--transition-base);
}

.chats-search:focus-within {
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 3px var(--color-accent-primary-alpha);
}

.chats-search-icon {
    color: var(--color-text-tertiary);
    font-size: 0.875rem;
}

.chats-search-input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 0.9375rem;
    color: var(--color-text-primary);
    font-family: inherit;
}

.chats-search-input::placeholder {
    color: var(--color-text-tertiary);
}

/* Grid */
.chats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-md);
}

/* Chat Card */
.chat-card {
    display: flex;
    flex-direction: column;
    padding: var(--space-md);
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.chat-card:hover {
    border-color: var(--color-accent-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.chat-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.chat-card-title {
    flex: 1;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.chat-card-menu {
    padding: var(--space-xs);
    background: transparent;
    border: none;
    color: var(--color-text-tertiary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition-base);
}

.chat-card-menu:hover {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
}

.chat-card-preview {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.chat-card-footer {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-border-subtle);
}

.chat-card-footer-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.chat-card-footer-icon {
    font-size: 0.75rem;
}

/* Empty State */
.chats-empty {
    text-align: center;
    padding: var(--space-xxl) var(--space-lg);
}

.chats-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-secondary);
    border-radius: 50%;
    color: var(--color-text-tertiary);
    font-size: 2rem;
}

.chats-empty-title {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin: 0 0 var(--space-sm) 0;
}

.chats-empty-description {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    margin: 0 0 var(--space-lg) 0;
}

.chats-loading {
    text-align: center;
    padding: var(--space-xxl);
    color: var(--color-text-tertiary);
}

/* Mobile */
@media (max-width: 768px) {
    .chats-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .chats-title {
        font-size: 1.5rem;
    }

    .chats-grid {
        grid-template-columns: 1fr;
    }
}