/**
 * Chat Interface — Styles
 *
 * Conversational chat-bubble UI with message bubbles, sources, skeleton loading.
 * Override CSS custom properties on .vinderick-ask--chat-interface to restyle.
 *
 * @since 1.0.0
 * @package VinderickApp
 */

.vinderick-ask--chat-interface {
    --vinderick-ask-bg: #ffffff;
    --vinderick-ask-border: #e5e7eb;
    --vinderick-ask-radius: 0.75rem;
    --vinderick-ask-max-height: 600px;
    --vinderick-ask-font: inherit;

    --vinderick-ask-user-bg: #2271b1;
    --vinderick-ask-user-text: #ffffff;
    --vinderick-ask-ai-bg: #f3f4f6;
    --vinderick-ask-ai-text: #1f2937;

    --vinderick-ask-source-bg: #eff6ff;
    --vinderick-ask-source-text: #1d4ed8;
    --vinderick-ask-source-hover: #dbeafe;
    --vinderick-ask-disclaimer-text: #6b7280;

    --vinderick-ask-input-bg: #ffffff;
    --vinderick-ask-input-border: #d1d5db;
    --vinderick-ask-input-focus: #2271b1;
    --vinderick-ask-send-bg: #2271b1;
    --vinderick-ask-send-text: #ffffff;
    --vinderick-ask-send-hover: #135e96;

    --vinderick-ask-skeleton-bg: #e5e7eb;
    --vinderick-ask-skeleton-shine: #f3f4f6;

    --vinderick-ask-demo-bg: #f9fafb;
    --vinderick-ask-demo-border: #e5e7eb;
    --vinderick-ask-demo-hover: #eff6ff;
    --vinderick-ask-demo-text: #374151;

    font-family: var(--vinderick-ask-font);
    background: var(--vinderick-ask-bg);
    border: 1px solid var(--vinderick-ask-border);
    border-radius: var(--vinderick-ask-radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    max-height: var(--vinderick-ask-max-height);
}

/* Messages area */
.vinderick-ask--chat-interface .vinderick-ask__messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Welcome / demo questions */
.vinderick-ask--chat-interface .vinderick-ask__welcome {
    text-align: center;
    padding: 2rem 1rem;
}

.vinderick-ask--chat-interface .vinderick-ask__welcome-text {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--vinderick-ask-ai-text);
    margin: 0 0 1.25rem 0;
}

.vinderick-ask--chat-interface .vinderick-ask__demo-questions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.vinderick-ask--chat-interface .vinderick-ask__demo-question {
    background: var(--vinderick-ask-demo-bg);
    border: 1px solid var(--vinderick-ask-demo-border);
    border-radius: 2rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    color: var(--vinderick-ask-demo-text);
    cursor: pointer;
    transition: background-color 0.15s, border-color 0.15s;
    font-family: var(--vinderick-ask-font);
    line-height: 1.4;
}

.vinderick-ask--chat-interface .vinderick-ask__demo-question:hover {
    background: var(--vinderick-ask-demo-hover);
    border-color: var(--vinderick-ask-input-focus);
}

/* Message bubbles */
.vinderick-ask--chat-interface .vinderick-ask__message {
    display: flex;
    flex-direction: column;
    max-width: 85%;
}

.vinderick-ask--chat-interface .vinderick-ask__message--user {
    align-self: flex-end;
}

.vinderick-ask--chat-interface .vinderick-ask__message--ai {
    align-self: flex-start;
}

.vinderick-ask--chat-interface .vinderick-ask__ai-label {
    font-size: 0.75rem;
    color: var(--vinderick-ask-disclaimer-text);
    margin-bottom: 0.25rem;
    padding-left: 0.25rem;
}

.vinderick-ask--chat-interface .vinderick-ask__bubble {
    padding: 0.75rem 1rem;
    border-radius: var(--vinderick-ask-radius);
    line-height: 1.6;
    font-size: 0.9375rem;
    word-break: break-word;
}

.vinderick-ask--chat-interface .vinderick-ask__message--user .vinderick-ask__bubble {
    background: var(--vinderick-ask-user-bg);
    color: var(--vinderick-ask-user-text);
    border-bottom-right-radius: 0.25rem;
}

.vinderick-ask--chat-interface .vinderick-ask__message--ai .vinderick-ask__bubble {
    background: var(--vinderick-ask-ai-bg);
    color: var(--vinderick-ask-ai-text);
    border-bottom-left-radius: 0.25rem;
}

.vinderick-ask--chat-interface .vinderick-ask__answer {
    white-space: pre-wrap;
}

.vinderick-ask--chat-interface .vinderick-ask__answer p {
    margin: 0 0 0.75rem 0;
}

.vinderick-ask--chat-interface .vinderick-ask__answer p:last-child {
    margin-bottom: 0;
}

/* Sources */
.vinderick-ask--chat-interface .vinderick-ask__sources {
    margin-top: 0.5rem;
    padding-left: 0.25rem;
}

.vinderick-ask--chat-interface .vinderick-ask__sources-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--vinderick-ask-disclaimer-text);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 0.375rem;
}

.vinderick-ask--chat-interface .vinderick-ask__sources-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.vinderick-ask--chat-interface .vinderick-ask__source {
    display: inline-block;
    background: var(--vinderick-ask-source-bg);
    color: var(--vinderick-ask-source-text);
    font-size: 0.8125rem;
    padding: 0.25rem 0.625rem;
    border-radius: 0.375rem;
    text-decoration: none;
    transition: background-color 0.15s;
}

.vinderick-ask--chat-interface .vinderick-ask__source:hover {
    background: var(--vinderick-ask-source-hover);
    text-decoration: none;
}

/* Disclaimer */
.vinderick-ask--chat-interface .vinderick-ask__disclaimer {
    font-size: 0.75rem;
    color: var(--vinderick-ask-disclaimer-text);
    margin-top: 0.5rem;
    padding-left: 0.25rem;
    font-style: italic;
}

/* Skeleton loading */
.vinderick-ask--chat-interface .vinderick-ask__skeleton {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.vinderick-ask--chat-interface .vinderick-ask__skeleton-line {
    height: 0.875rem;
    background: var(--vinderick-ask-skeleton-bg);
    border-radius: 0.25rem;
    width: 100%;
    animation: vinderick-ask-skeleton-pulse 1.5s ease-in-out infinite;
}

.vinderick-ask--chat-interface .vinderick-ask__skeleton-line--medium {
    width: 80%;
}

.vinderick-ask--chat-interface .vinderick-ask__skeleton-line--short {
    width: 55%;
}

@keyframes vinderick-ask-skeleton-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* Input area */
.vinderick-ask--chat-interface .vinderick-ask__input-area {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-top: 1px solid var(--vinderick-ask-border);
    background: var(--vinderick-ask-input-bg);
}

.vinderick-ask--chat-interface .vinderick-ask__input {
    flex: 1;
    border: 1px solid var(--vinderick-ask-input-border);
    border-radius: 1.5rem;
    padding: 0.625rem 1rem;
    font-size: 0.9375rem;
    font-family: var(--vinderick-ask-font);
    background: var(--vinderick-ask-input-bg);
    color: var(--vinderick-ask-ai-text);
    outline: none;
    transition: border-color 0.15s;
}

.vinderick-ask--chat-interface .vinderick-ask__input:focus {
    border-color: var(--vinderick-ask-input-focus);
    box-shadow: 0 0 0 1px var(--vinderick-ask-input-focus);
}

.vinderick-ask--chat-interface .vinderick-ask__send {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border: none;
    border-radius: 50%;
    background: var(--vinderick-ask-send-bg);
    color: var(--vinderick-ask-send-text);
    cursor: pointer;
    transition: background-color 0.15s;
    flex-shrink: 0;
    padding: 0;
}

.vinderick-ask--chat-interface .vinderick-ask__send:hover {
    background: var(--vinderick-ask-send-hover);
}

.vinderick-ask--chat-interface .vinderick-ask__send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.vinderick-ask--chat-interface .vinderick-ask__send svg {
    width: 1.125rem;
    height: 1.125rem;
}

/* Error message */
.vinderick-ask--chat-interface .vinderick-ask__error {
    background: #fef2f2;
    color: #991b1b;
    padding: 0.75rem 1rem;
    border-radius: var(--vinderick-ask-radius);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.vinderick-ask--chat-interface .vinderick-ask__error-retry {
    background: none;
    border: 1px solid #991b1b;
    color: #991b1b;
    padding: 0.25rem 0.75rem;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 0.8125rem;
    font-family: var(--vinderick-ask-font);
    white-space: nowrap;
}

.vinderick-ask--chat-interface .vinderick-ask__error-retry:hover {
    background: #991b1b;
    color: #ffffff;
}

/* "Ask another question" button (classic mode) */
.vinderick-ask--chat-interface .vinderick-ask__new-question {
    display: block;
    margin-top: 0.75rem;
    padding: 0.5rem 1.25rem;
    background: var(--vinderick-ask-input-bg);
    border: 1px solid var(--vinderick-ask-input-border);
    border-radius: 2rem;
    font-size: 0.875rem;
    font-family: var(--vinderick-ask-font);
    color: var(--vinderick-ask-source-text);
    cursor: pointer;
    transition: background-color 0.15s, border-color 0.15s;
}

.vinderick-ask--chat-interface .vinderick-ask__new-question:hover {
    background: var(--vinderick-ask-demo-hover);
    border-color: var(--vinderick-ask-input-focus);
}

/* Classic mode: no persistent max-height scroll */
.vinderick-ask--classic {
    max-height: none;
}

/* Search page wrapper */
.vinderick-app-search-page-chat {
    margin-bottom: 1.5rem;
}

/* Responsive */
@media (max-width: 600px) {
    .vinderick-ask--chat-interface .vinderick-ask__messages {
        padding: 1rem;
    }

    .vinderick-ask--chat-interface .vinderick-ask__message {
        max-width: 92%;
    }

    .vinderick-ask--chat-interface .vinderick-ask__welcome {
        padding: 1.5rem 0.5rem;
    }

    .vinderick-ask--chat-interface .vinderick-ask__demo-questions {
        flex-direction: column;
    }
}

@media (prefers-reduced-motion: reduce) {
    .vinderick-ask--chat-interface .vinderick-ask__skeleton-line {
        animation: none;
    }
}