/* assets/ver12-chat.css */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --ver12-bg-glass: rgba(255, 255, 255, 0.75);
    --ver12-border-glass: rgba(229, 231, 235, 0.5);
    --ver12-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --ver12-text-primary: #1f2937;
    --ver12-text-secondary: #4b5563;
    --ver12-input-bg: rgba(249, 250, 251, 0.8);
    --ver12-chat-bubble-user: var(--ver12-theme-color, #4f46e5);
    --ver12-chat-bubble-agent: rgba(243, 244, 246, 0.85);
}

.ver12-dark-mode {
    --ver12-bg-glass: rgba(17, 24, 39, 0.85);
    --ver12-border-glass: rgba(37, 99, 235, 0.2);
    --ver12-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.3);
    --ver12-text-primary: #f3f4f6;
    --ver12-text-secondary: #9ca3af;
    --ver12-input-bg: rgba(31, 41, 55, 0.8);
    --ver12-chat-bubble-user: var(--ver12-theme-color, #4f46e5);
    --ver12-chat-bubble-agent: rgba(31, 41, 55, 0.85);
}

/* 浮動按鈕 */
#ver12-cs-trigger-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--ver12-theme-color, #4f46e5);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 99999;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#ver12-cs-trigger-btn:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

#ver12-cs-trigger-btn svg {
    width: 28px;
    height: 28px;
    fill: currentColor;
    transition: transform 0.3s ease;
}

#ver12-cs-trigger-btn.active svg {
    transform: rotate(90deg);
}

/* 聊天容器 */
#ver12-cs-container {
    position: fixed;
    bottom: 105px;
    right: 30px;
    width: 380px;
    height: 600px;
    max-height: calc(100vh - 150px);
    border-radius: 20px;
    background: var(--ver12-bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--ver12-border-glass);
    box-shadow: var(--ver12-shadow);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 99998;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    transform: translateY(30px) scale(0.95);
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#ver12-cs-container.active {
    transform: translateY(0) scale(1);
    opacity: 1;
    pointer-events: auto;
}

/* 最大化狀態 */
#ver12-cs-container.ver12-cs-maximized {
    width: 800px;
    height: 80vh;
    max-height: calc(100vh - 150px);
    max-width: calc(100vw - 60px);
}

/* 嵌入式聊天容器 */
.ver12-cs-embedded-chat {
    width: 100%;
    border-radius: 16px;
    background: var(--ver12-bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--ver12-border-glass);
    box-shadow: var(--ver12-shadow);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

/* 頭部 */
.ver12-cs-header {
    padding: 16px 20px;
    background: linear-gradient(135deg, var(--ver12-theme-color, #4f46e5), rgba(79, 70, 229, 0.8));
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.ver12-cs-header-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.ver12-cs-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 18px;
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.ver12-cs-header-title {
    font-size: 16px;
    font-weight: 600;
    margin: 0;
    line-height: 1.2;
}

.ver12-cs-header-status {
    font-size: 11px;
    opacity: 0.8;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 4px;
}

.ver12-cs-header-status::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: #10b981;
    border-radius: 50%;
}

.ver12-cs-controls {
    display: flex;
    gap: 8px;
}

.ver12-cs-control-btn {
    background: none;
    border: none;
    color: #ffffff;
    cursor: pointer;
    opacity: 0.8;
    transition: opacity 0.2s;
    padding: 4px;
}

.ver12-cs-control-btn:hover {
    opacity: 1;
}

/* 聊天訊息區域 */
.ver12-cs-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: transparent;
}

/* 訊息氣泡 */
.ver12-msg {
    display: flex;
    flex-direction: column;
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 16px;
    font-size: 14px;
    line-height: 1.5;
    word-break: break-all;
}

.ver12-msg-user {
    align-self: flex-end;
    background-color: var(--ver12-chat-bubble-user);
    color: #ffffff;
    border-bottom-right-radius: 4px;
}

.ver12-msg-agent {
    align-self: flex-start;
    background-color: var(--ver12-chat-bubble-agent);
    color: var(--ver12-text-primary);
    border-bottom-left-radius: 4px;
    border: 1px solid var(--ver12-border-glass);
}

.ver12-msg-time {
    font-size: 10px;
    opacity: 0.6;
    margin-top: 4px;
    text-align: right;
}

.ver12-msg-user .ver12-msg-time {
    color: rgba(255, 255, 255, 0.8);
}

/* 系統消息（等待、狀態等） */
.ver12-msg-system {
    align-self: center;
    background: rgba(0, 0, 0, 0.05);
    color: var(--ver12-text-secondary);
    font-size: 12px;
    padding: 6px 12px;
    border-radius: 20px;
    max-width: 90%;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.ver12-dark-mode .ver12-msg-system {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.05);
}

/* 載入動畫 */
.ver12-typing {
    display: flex;
    gap: 4px;
    padding: 8px 12px;
}

.ver12-typing span {
    width: 8px;
    height: 8px;
    background-color: var(--ver12-text-secondary);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.ver12-typing span:nth-child(1) { animation-delay: -0.32s; }
.ver12-typing span:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1.0); }
}

/* 輸入框區域 */
.ver12-cs-input-area {
    padding: 16px 20px;
    border-top: 1px solid var(--ver12-border-glass);
    background: rgba(255, 255, 255, 0.02);
    display: flex;
    gap: 12px;
    align-items: center;
}

.ver12-cs-input {
    flex: 1;
    height: 40px;
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--ver12-border-glass);
    background-color: var(--ver12-input-bg);
    color: var(--ver12-text-primary);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.ver12-cs-input:focus {
    border-color: var(--ver12-theme-color, #4f46e5);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.ver12-cs-send-btn {
    width: 40px !important;
    height: 40px !important;
    min-width: 40px !important;
    min-height: 40px !important;
    border-radius: 50% !important;
    background-color: var(--ver12-theme-color, #4f46e5) !important;
    color: #ffffff !important;
    border: none !important;
    cursor: pointer !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    transition: background-color 0.2s, transform 0.2s !important;
    flex-shrink: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
}

.ver12-cs-send-btn:hover {
    background-color: var(--ver12-theme-color, #4f46e5) !important;
    opacity: 0.9 !important;
    transform: scale(1.05) !important;
}

.ver12-cs-send-btn:active {
    transform: scale(0.95) !important;
}

.ver12-cs-send-btn svg {
    width: 18px !important;
    height: 18px !important;
    fill: #ffffff !important;
    display: block !important;
}

/* 捲軸美化 */
.ver12-cs-messages::-webkit-scrollbar {
    width: 6px;
}

.ver12-cs-messages::-webkit-scrollbar-track {
    background: transparent;
}

.ver12-cs-messages::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 3px;
}

.ver12-dark-mode .ver12-cs-messages::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
}

/* Responsive */
@media (max-width: 480px) {
    #ver12-cs-container {
        width: calc(100% - 40px);
        height: calc(100vh - 120px);
        right: 20px;
        bottom: 90px;
    }
}