/**
 * KV-Tube AI Chat Styles
 * Styling for the transcript Q&A chatbot panel
 */

/* Chat Panel Container */
.ai-chat-panel {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 380px;
    max-height: 500px;
    background: var(--yt-bg-primary, #0f0f0f);
    border: 1px solid var(--yt-border, #272727);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    z-index: 9999;
    overflow: hidden;
    transform: translateY(110%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.ai-chat-panel.visible {
    transform: translateY(0);
}

/* Chat Header */
.ai-chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.ai-chat-header h4 {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.ai-chat-close {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: 4px;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.ai-chat-close:hover {
    opacity: 1;
}

/* Model Status */
.ai-model-status {
    font-size: 11px;
    opacity: 0.9;
    margin-top: 2px;
}

.ai-model-status.loading {
    color: #ffd700;
}

.ai-model-status.ready {
    color: #00ff88;
}

/* Messages Container */
.ai-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 300px;
}

/* Message Bubbles */
.ai-message {
    max-width: 85%;
    padding: 10px 14px;
    border-radius: 16px;
    font-size: 13px;
    line-height: 1.5;
    word-wrap: break-word;
}

.ai-message.user {
    align-self: flex-end;
    background: #3ea6ff;
    color: white;
    border-bottom-right-radius: 4px;
}

.ai-message.assistant {
    align-self: flex-start;
    background: var(--yt-bg-secondary, #272727);
    color: var(--yt-text-primary, #fff);
    border-bottom-left-radius: 4px;
}

.ai-message.system {
    align-self: center;
    background: transparent;
    color: var(--yt-text-secondary, #aaa);
    font-style: italic;
    font-size: 12px;
}

/* Typing Indicator */
.ai-typing {
    display: flex;
    gap: 4px;
    padding: 10px 14px;
}

.ai-typing span {
    width: 8px;
    height: 8px;
    background: var(--yt-text-secondary, #aaa);
    border-radius: 50%;
    animation: typing 1.2s infinite;
}

.ai-typing span:nth-child(2) {
    animation-delay: 0.2s;
}

.ai-typing span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {

    0%,
    60%,
    100% {
        transform: translateY(0);
    }

    30% {
        transform: translateY(-8px);
    }
}

/* Input Area */
.ai-chat-input {
    display: flex;
    gap: 8px;
    padding: 12px;
    border-top: 1px solid var(--yt-border, #272727);
    background: var(--yt-bg-secondary, #181818);
}

.ai-chat-input input {
    flex: 1;
    background: var(--yt-bg-primary, #0f0f0f);
    border: 1px solid var(--yt-border, #272727);
    border-radius: 20px;
    padding: 10px 16px;
    color: var(--yt-text-primary, #fff);
    font-size: 13px;
    outline: none;
    transition: border-color 0.2s;
}

.ai-chat-input input:focus {
    border-color: #3ea6ff;
}

.ai-chat-input input::placeholder {
    color: var(--yt-text-secondary, #aaa);
}

.ai-chat-send {
    background: #3ea6ff;
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, transform 0.2s;
}

.ai-chat-send:hover {
    background: #2d8fd9;
    transform: scale(1.05);
}

.ai-chat-send:disabled {
    background: #555;
    cursor: not-allowed;
}

/* Download Progress */
.ai-download-progress {
    padding: 16px;
    text-align: center;
}

.ai-download-bar {
    width: 100%;
    height: 6px;
    background: var(--yt-bg-secondary, #272727);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 8px;
}

.ai-download-fill {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 3px;
    transition: width 0.3s;
}

.ai-download-text {
    font-size: 12px;
    color: var(--yt-text-secondary, #aaa);
    margin-top: 8px;
}

/* Mobile */
@media (max-width: 768px) {
    .ai-chat-panel {
        width: calc(100% - 20px);
        left: 10px;
        right: 10px;
        bottom: 10px;
        max-height: 60vh;
    }
}