/**
 * WP 轻量客服 - 样式文件
 * 轻量化设计，不依赖任何前端框架
 */

/* CSS 变量 */
#wp-kefu-widget {
    --wp-kefu-primary: #2563eb;
    --wp-kefu-primary-hover: #1d4ed8;
    --wp-kefu-primary-light: #eff6ff;
    --wp-kefu-bg: #ffffff;
    --wp-kefu-text: #1f2937;
    --wp-kefu-text-muted: #6b7280;
    --wp-kefu-border: #e5e7eb;
    --wp-kefu-radius: 16px;
    --wp-kefu-shadow: 0 20px 50px -12px rgba(0, 0, 0, 0.25);
    --wp-kefu-shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.15);
    --wp-kefu-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    position: fixed;
    bottom: 24px;
    z-index: 999999;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--wp-kefu-text);
}

#wp-kefu-widget.wp-kefu-right {
    right: 24px;
}

#wp-kefu-widget.wp-kefu-left {
    left: 24px;
}

/* ========== 悬浮按钮 ========== */
.wp-kefu-toggle-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--wp-kefu-primary);
    color: #ffffff;
    border: none;
    cursor: pointer;
    box-shadow: var(--wp-kefu-shadow-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all var(--wp-kefu-transition);
    padding: 0;
}

.wp-kefu-toggle-btn:hover {
    background: var(--wp-kefu-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.wp-kefu-toggle-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
}

.wp-kefu-toggle-btn svg {
    width: 26px;
    height: 26px;
    transition: opacity var(--wp-kefu-transition), transform var(--wp-kefu-transition);
}

.wp-kefu-icon-close {
    position: absolute;
    opacity: 0;
    transform: rotate(-90deg);
}

#wp-kefu-widget.active .wp-kefu-icon-chat {
    opacity: 0;
    transform: rotate(90deg);
}

#wp-kefu-widget.active .wp-kefu-icon-close {
    opacity: 1;
    transform: rotate(0);
}

/* 状态指示点 */
.wp-kefu-status-dot {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #22c55e;
    border: 2px solid #ffffff;
    box-sizing: content-box;
}

.wp-kefu-offline .wp-kefu-status-dot {
    background: #9ca3af;
}

/* 状态呼吸动画 */
.wp-kefu-online .wp-kefu-status-dot {
    animation: wp-kefu-pulse 2s infinite;
}

@keyframes wp-kefu-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(34, 197, 94, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
    }
}

/* ========== 对话窗口 ========== */
.wp-kefu-chatbox {
    position: absolute;
    bottom: 72px;
    right: 0;
    width: 360px;
    max-width: calc(100vw - 48px);
    background: var(--wp-kefu-bg);
    border-radius: var(--wp-kefu-radius);
    box-shadow: var(--wp-kefu-shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 480px;
    max-height: calc(100vh - 160px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px) scale(0.96);
    transform-origin: bottom right;
    transition: all var(--wp-kefu-transition);
    /* 边界保护：确保不超出视口 */
    box-sizing: border-box;
}

/* 右侧模式：窗口右对齐按钮右边缘 */
.wp-kefu-right .wp-kefu-chatbox {
    right: 0;
    left: auto;
}

/* 左侧模式：窗口左对齐按钮左边缘，且从左侧不超出视口 */
.wp-kefu-left .wp-kefu-chatbox {
    left: 0;
    right: auto;
    transform-origin: bottom left;
}

#wp-kefu-widget.active .wp-kefu-chatbox {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

/* 响应式：移动端 */
@media (max-width: 480px) {
    .wp-kefu-chatbox {
        width: calc(100vw - 32px);
        height: 70vh;
        max-height: 70vh;
        position: fixed;
        bottom: 88px;
        left: 16px;
        right: 16px;
    }
    
    #wp-kefu-widget.wp-kefu-right {
        right: 16px;
    }
    
    #wp-kefu-widget.wp-kefu-left {
        left: 16px;
    }
    
    .wp-kefu-toggle-btn {
        width: 52px;
        height: 52px;
    }
}

/* ========== 窗口头部 ========== */
.wp-kefu-chatbox-header {
    background: linear-gradient(135deg, var(--wp-kefu-primary), var(--wp-kefu-primary-hover));
    color: #ffffff;
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.wp-kefu-header-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.wp-kefu-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.wp-kefu-avatar svg {
    width: 24px;
    height: 24px;
    color: #ffffff;
}

.wp-kefu-header-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.wp-kefu-agent-name {
    font-weight: 600;
    font-size: 15px;
}

.wp-kefu-status-text {
    font-size: 12px;
    opacity: 0.9;
    display: flex;
    align-items: center;
    gap: 6px;
}

.wp-kefu-status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.wp-kefu-status-indicator.online {
    background: #4ade80;
}

.wp-kefu-status-indicator.offline {
    background: #d1d5db;
}

/* ========== 消息区域 ========== */
.wp-kefu-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px 16px;
    background: #f9fafb;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

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

.wp-kefu-messages::-webkit-scrollbar-track {
    background: transparent;
}

.wp-kefu-messages::-webkit-scrollbar-thumb {
    background: #d1d5db;
    border-radius: 3px;
}

.wp-kefu-messages::-webkit-scrollbar-thumb:hover {
    background: #9ca3af;
}

/* 消息气泡 */
.wp-kefu-message {
    max-width: 80%;
    display: flex;
    gap: 8px;
    animation: wp-kefu-message-in 0.3s ease-out;
}

@keyframes wp-kefu-message-in {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.wp-kefu-message-agent {
    align-self: flex-start;
}

.wp-kefu-message-user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.wp-kefu-message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.wp-kefu-message-agent .wp-kefu-message-avatar {
    background: var(--wp-kefu-primary);
    color: #ffffff;
}

.wp-kefu-message-user .wp-kefu-message-avatar {
    background: #e5e7eb;
    color: #374151;
}

.wp-kefu-message-avatar svg {
    width: 18px;
    height: 18px;
}

.wp-kefu-message-bubble {
    padding: 10px 14px;
    border-radius: 14px;
    word-wrap: break-word;
    word-break: break-word;
}

.wp-kefu-message-agent .wp-kefu-message-bubble {
    background: #ffffff;
    color: var(--wp-kefu-text);
    border-top-left-radius: 4px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.wp-kefu-message-user .wp-kefu-message-bubble {
    background: var(--wp-kefu-primary);
    color: #ffffff;
    border-top-right-radius: 4px;
}

/* 正在输入提示 */
.wp-kefu-typing {
    display: flex;
    gap: 4px;
    padding: 10px 14px;
}

.wp-kefu-typing span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--wp-kefu-text-muted);
    animation: wp-kefu-bounce 1.4s infinite ease-in-out both;
}

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

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

@keyframes wp-kefu-bounce {
    0%, 80%, 100% {
        transform: scale(0.6);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* ========== 输入区域 ========== */
.wp-kefu-input-area {
    padding: 16px;
    background: linear-gradient(180deg, #ffffff 0%, #fafbfc 100%);
    border-top: 1px solid rgba(0, 0, 0, 0.04);
    flex-shrink: 0;
    position: relative;
}

.wp-kefu-input-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 16px;
    right: 16px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.06), transparent);
}

.wp-kefu-input-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #f4f5f7;
    border-radius: 22px;
    padding: 5px 5px 5px 20px;
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
}

.wp-kefu-input-wrapper:focus-within {
    background: #ffffff;
    border-color: var(--wp-kefu-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12), 0 2px 8px rgba(0, 0, 0, 0.04);
}

.wp-kefu-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 10px 0;
    font-size: 14px;
    color: var(--wp-kefu-text);
    outline: none;
    min-width: 0;
    font-family: inherit;
    line-height: 1.4;
    font-weight: 400;
}

.wp-kefu-input::placeholder {
    color: #9ca3af;
    font-size: 13px;
}

.wp-kefu-send-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--wp-kefu-primary) 0%, #1d4ed8 100%);
    color: #ffffff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
    padding: 0;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.28);
    position: relative;
    overflow: hidden;
}

.wp-kefu-send-btn:not(:disabled)::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: radial-gradient(circle at center, rgba(255,255,255,0.25) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.wp-kefu-send-btn:hover:not(:disabled) {
    transform: scale(1.06);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}

.wp-kefu-send-btn:hover:not(:disabled)::after {
    opacity: 1;
}

.wp-kefu-send-btn:active:not(:disabled) {
    transform: scale(0.95);
    box-shadow: 0 1px 4px rgba(37, 99, 235, 0.3);
}

.wp-kefu-send-btn:disabled {
    background: #d1d5db;
    box-shadow: none;
    cursor: not-allowed;
    opacity: 0.6;
}

.wp-kefu-send-btn svg {
    width: 18px;
    height: 18px;
    position: relative;
    z-index: 1;
    transition: transform 0.2s ease;
}

.wp-kefu-send-btn:hover:not(:disabled) svg {
    transform: translate(1px, -1px);
}

/* ========== 离线状态 ========== */
.wp-kefu-offline-contact {
    padding: 32px 24px;
    text-align: center;
    background: #f9fafb;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.wp-kefu-offline-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--wp-kefu-primary-light);
    color: var(--wp-kefu-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.wp-kefu-offline-icon svg {
    width: 32px;
    height: 32px;
}

.wp-kefu-offline-text {
    color: var(--wp-kefu-text-muted);
    font-size: 14px;
    margin: 0;
    line-height: 1.6;
}

.wp-kefu-phone-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--wp-kefu-primary);
    color: #ffffff !important;
    text-decoration: none;
    border-radius: 28px;
    font-weight: 600;
    font-size: 14px;
    transition: all var(--wp-kefu-transition);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    margin-top: 6px;
}

.wp-kefu-phone-btn:hover {
    background: var(--wp-kefu-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
    text-decoration: none;
    color: #ffffff;
}

.wp-kefu-phone-btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.wp-kefu-phone-info {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.wp-kefu-phone-name {
    font-size: 13px;
    opacity: 0.9;
}

.wp-kefu-phone-num {
    font-size: 15px;
    font-weight: 700;
}

/* ========== 忙碌超时提示 ========== */
.wp-kefu-busy-prompt {
    animation: wp-kefu-fade-in 0.3s ease;
}

.wp-kefu-busy-bubble {
    background: #fff3cd !important;
    border: 1px solid #ffe69c;
    color: #664d03 !important;
    max-width: 280px;
}

.wp-kefu-busy-text {
    font-size: 13px;
    line-height: 1.5;
    margin-bottom: 8px;
}

.wp-kefu-busy-phones {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.wp-kefu-busy-phone-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 8px 14px;
    background: var(--wp-kefu-primary);
    color: #ffffff !important;
    text-decoration: none;
    border-radius: 20px;
    font-size: 13px;
    transition: all 0.2s ease;
}

.wp-kefu-busy-phone-link:hover {
    background: var(--wp-kefu-primary-hover);
    text-decoration: none;
    color: #ffffff;
    transform: translateY(-1px);
}

.wp-kefu-busy-phone-name {
    font-weight: 600;
}

.wp-kefu-busy-phone-num {
    font-weight: 700;
    font-size: 14px;
}

/* ========== 减少动画偏好 ========== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}