/* Chat Bubble Button */
.chat-bubble-btn {
    position: fixed;
    bottom: 25px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    border: none;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 1000;
    color: white;
}

.chat-bubble-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.chat-bubble-btn i {
    font-size: 28px;
}

/* Chat Container */
.chat-container {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 400px;
    height: 600px;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    display: none;
    flex-direction: column;
    z-index: 1001;
    overflow: hidden;
    transition: all 0.3s ease;
}

.chat-container.show {
    display: flex;
}

.chat-container.collapsed {
    height: 60px;
}

/* Chat Header */
.chat-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.chat-header-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 16px;
}

.chat-header-actions {
    display: flex;
    gap: 8px;
}

.chat-header-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.chat-header-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Chat Messages */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background: #f8f9fa;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #667eea;
    border-radius: 3px;
}

.message {
    display: flex;
    flex-direction: column;
    max-width: 85%;
    animation: messageSlideIn 0.3s ease;
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    align-self: flex-end;
}

.message.assistant {
    align-self: flex-start;
}

.message-bubble {
    padding: 12px 16px;
    border-radius: 12px;
    word-wrap: break-word;
}

.message.user .message-bubble {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-bottom-right-radius: 4px;
}

.message.assistant .message-bubble {
    background: #ffffff;
    color: #333;
    border: 1px solid #e0e0e0;
    border-bottom-left-radius: 4px;
}

.message-time {
    font-size: 11px;
    color: #888;
    margin-top: 4px;
    padding: 0 4px;
}

.message.user .message-time {
    text-align: right;
}

.message.assistant .message-time {
    text-align: left;
}

/* Typing Indicator */
.typing-indicator {
    display: none;
    align-items: center;
    gap: 4px;
    padding: 12px 16px;
    background: #ffffff;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    border-bottom-left-radius: 4px;
    width: fit-content;
}

.typing-indicator.show {
    display: flex;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background: #667eea;
    border-radius: 50%;
    animation: typingBounce 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(1) {
    animation-delay: -0.32s;
}

.typing-dot:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes typingBounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

/* Chat Input */
.chat-input-container {
    padding: 16px 20px;
    background: #ffffff;
    border-top: 1px solid #e0e0e0;
}

.chat-input-wrapper {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

.chat-input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid #e0e0e0;
    border-radius: 24px;
    outline: none;
    font-size: 14px;
    resize: none;
    max-height: 120px;
    min-height: 44px;
    font-family: inherit;
}

.chat-input:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.chat-send-btn {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    flex-shrink: 0;
}

.chat-send-btn:hover:not(:disabled) {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.chat-send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Empty State */
.chat-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: #888;
    text-align: center;
    padding: 40px;
}

.chat-empty-state i {
    font-size: 48px;
    color: #667eea;
    margin-bottom: 16px;
}

.chat-empty-state p {
    margin: 0;
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .chat-container {
        width: 100%;
        height: 100%;
        bottom: 0;
        right: 0;
        border-radius: 0;
    }

    .chat-bubble-btn {
        bottom: 20px;
        right: 20px;
        width: 56px;
        height: 56px;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .chat-container {
        background: #1e1e1e;
    }

    .chat-messages {
        background: #2d2d2d;
    }

    .message.assistant .message-bubble {
        background: #3a3a3a;
        color: #e0e0e0;
        border-color: #4a4a4a;
    }

    .chat-input-container {
        background: #1e1e1e;
        border-top-color: #4a4a4a;
    }

    .chat-input {
        background: #2d2d2d;
        color: #e0e0e0;
        border-color: #4a4a4a;
    }
}