/**
 * AI Chat Assistant Styles
 *
 * @package AI_Chat_Assistant
 * @since 1.0.0
 */

/* CSS Custom Properties for theming */
:root {
    --ai-chat-primary-color: #007cba;
    --ai-chat-primary-hover: #005a87;
    --ai-chat-secondary-color: #f1f1f1;
    --ai-chat-text-color: #333;
    --ai-chat-white: #fff;
    --ai-chat-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    --ai-chat-border-radius: 12px;
    --ai-chat-transition: all 0.3s ease;
    --ai-chat-font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --ai-chat-z-index: 9999;
}

/* Main Widget Container */
.ai-chat-widget {
    position: fixed;
    z-index: var(--ai-chat-z-index);
    font-family: var(--ai-chat-font-family);
    font-size: 14px;
    line-height: 1.4;
}

/* Inline version */
.ai-chat-inline {
    position: relative;
    width: 100%;
    max-width: 400px;
    margin: 20px 0;
}

.ai-chat-inline .ai-chat-toggle {
    display: none;
}

.ai-chat-inline .ai-chat-window {
    position: relative;
    display: block !important;
    transform: none !important;
}

/* Chat Toggle Button */
.ai-chat-toggle {
    width: 60px;
    height: 60px;
    background: var(--ai-chat-primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--ai-chat-shadow);
    transition: var(--ai-chat-transition);
    border: none;
    padding: 0;
    margin: 0;
}

.ai-chat-toggle:hover {
    background: var(--ai-chat-primary-hover);
    transform: scale(1.05);
}

.ai-chat-toggle:focus {
    outline: 2px solid var(--ai-chat-primary-color);
    outline-offset: 2px;
}

.ai-chat-icon {
    color: var(--ai-chat-white);
    transition: var(--ai-chat-transition);
}

.ai-chat-icon-close {
    display: none;
}

.ai-chat-widget.ai-chat-open .ai-chat-icon-chat {
    display: none;
}

.ai-chat-widget.ai-chat-open .ai-chat-icon-close {
    display: block;
}

/* Chat Window */
.ai-chat-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 350px;
    max-width: calc(100vw - 40px);
    height: 500px;
    max-height: calc(100vh - 120px);
    background: var(--ai-chat-white);
    border-radius: var(--ai-chat-border-radius);
    box-shadow: var(--ai-chat-shadow);
    display: none;
    flex-direction: column;
    overflow: hidden;
    transform: translateY(20px) scale(0.9);
    opacity: 0;
    transition: var(--ai-chat-transition);
}

.ai-chat-widget.ai-chat-open .ai-chat-window {
    display: flex;
    transform: translateY(0) scale(1);
    opacity: 1;
}

/* Position variations */
.ai-chat-position-bottom-left .ai-chat-window {
    right: auto;
    left: 0;
}

.ai-chat-position-top-right .ai-chat-window {
    bottom: auto;
    top: 80px;
}

.ai-chat-position-top-left .ai-chat-window {
    bottom: auto;
    top: 80px;
    right: auto;
    left: 0;
}

/* Header */
.ai-chat-header {
    background: var(--ai-chat-primary-color);
    color: var(--ai-chat-white);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-radius: var(--ai-chat-border-radius) var(--ai-chat-border-radius) 0 0;
}

.ai-chat-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
}

.ai-chat-minimize {
    background: none;
    border: none;
    color: var(--ai-chat-white);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: var(--ai-chat-transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.ai-chat-minimize:hover {
    background: rgba(255, 255, 255, 0.1);
}

.ai-chat-minimize:focus {
    outline: 2px solid rgba(255, 255, 255, 0.3);
}

/* Messages Area */
.ai-chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    scroll-behavior: smooth;
}

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

.ai-chat-messages::-webkit-scrollbar-track {
    background: var(--ai-chat-secondary-color);
}

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

.ai-chat-messages::-webkit-scrollbar-thumb:hover {
    background: #aaa;
}

/* Messages */
.ai-chat-message {
    display: flex;
    flex-direction: column;
    max-width: 80%;
    animation: fadeInUp 0.3s ease;
}

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

.ai-chat-message-ai {
    align-self: flex-start;
    align-items: flex-start;
}

.ai-chat-message-content {
    padding: 12px 16px;
    border-radius: 18px;
    word-wrap: break-word;
    white-space: pre-wrap;
}

.ai-chat-message-user .ai-chat-message-content {
    background: var(--ai-chat-primary-color);
    color: var(--ai-chat-white);
    border-bottom-right-radius: 6px;
}

.ai-chat-message-ai .ai-chat-message-content {
    background: var(--ai-chat-secondary-color);
    color: var(--ai-chat-text-color);
    border-bottom-left-radius: 6px;
}

.ai-chat-message-time {
    font-size: 11px;
    color: #666;
    margin-top: 4px;
    padding: 0 4px;
}

/* Typing Indicator */
.ai-chat-typing {
    padding: 12px 20px;
    background: rgba(0, 0, 0, 0.05);
    border-top: 1px solid #eee;
}

.ai-chat-typing-content {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #666;
    font-size: 13px;
}

.ai-chat-typing-dots {
    display: flex;
    gap: 3px;
}

.ai-chat-typing-dots span {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: #666;
    animation: typing-bounce 1.4s infinite ease-in-out;
}

.ai-chat-typing-dots span:nth-child(1) {
    animation-delay: -0.32s;
}

.ai-chat-typing-dots span:nth-child(2) {
    animation-delay: -0.16s;
}

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

/* Input Area */
.ai-chat-input {
    padding: 16px 20px;
    border-top: 1px solid #eee;
    background: var(--ai-chat-white);
    border-radius: 0 0 var(--ai-chat-border-radius) var(--ai-chat-border-radius);
}

.ai-chat-input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 12px;
}

.ai-chat-textarea {
    flex: 1;
    border: 1px solid #ddd;
    border-radius: 20px;
    padding: 10px 16px;
    resize: none;
    font-family: inherit;
    font-size: 14px;
    line-height: 1.4;
    max-height: 100px;
    min-height: 40px;
    outline: none;
    transition: var(--ai-chat-transition);
}

.ai-chat-textarea:focus {
    border-color: var(--ai-chat-primary-color);
    box-shadow: 0 0 0 3px rgba(0, 124, 186, 0.1);
}

.ai-chat-textarea::placeholder {
    color: #999;
}

.ai-chat-send-button {
    width: 40px;
    height: 40px;
    background: var(--ai-chat-primary-color);
    color: var(--ai-chat-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--ai-chat-transition);
    flex-shrink: 0;
}

.ai-chat-send-button:hover:not(:disabled) {
    background: var(--ai-chat-primary-hover);
    transform: scale(1.05);
}

.ai-chat-send-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.ai-chat-send-button:focus {
    outline: 2px solid var(--ai-chat-primary-color);
    outline-offset: 2px;
}

/* Error Message */
.ai-chat-error {
    padding: 16px 20px;
    background: #fee;
    border-top: 1px solid #fcc;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.ai-chat-error p {
    margin: 0;
    color: #d63031;
    font-size: 13px;
    flex: 1;
}

.ai-chat-retry {
    background: #d63031;
    color: var(--ai-chat-white);
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    transition: var(--ai-chat-transition);
}

.ai-chat-retry:hover {
    background: #b71c1c;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .ai-chat-widget {
        bottom: 10px !important;
        right: 10px !important;
        left: 10px !important;
        top: auto !important;
    }

    .ai-chat-window {
        width: auto;
        right: 0;
        left: 0;
        height: 400px;
        max-height: calc(100vh - 100px);
    }

    .ai-chat-toggle {
        width: 50px;
        height: 50px;
    }

    .ai-chat-messages {
        padding: 16px;
        gap: 12px;
    }

    .ai-chat-input {
        padding: 12px 16px;
    }

    .ai-chat-header {
        padding: 12px 16px;
    }
}

@media (max-width: 480px) {
    .ai-chat-window {
        height: 350px;
    }

    .ai-chat-message {
        max-width: 90%;
    }

    .ai-chat-message-content {
        padding: 10px 14px;
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    .ai-chat-widget,
    .ai-chat-toggle,
    .ai-chat-window,
    .ai-chat-send-button,
    .ai-chat-minimize,
    .ai-chat-textarea {
        transition: none;
    }

    .ai-chat-message {
        animation: none;
    }

    .ai-chat-typing-dots span {
        animation: none;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .ai-chat-window {
        border: 2px solid var(--ai-chat-text-color);
    }

    .ai-chat-message-ai .ai-chat-message-content {
        border: 1px solid #ccc;
    }
}

/* Print Styles */
@media print {
    .ai-chat-widget {
        display: none !important;
    }
}