:root {
    --primary-color: #4285f4;
    --theme-color: #4285f4;
    --text-color: #333;
    --bg-color: #f5f5f5;
    --chat-bg: #fff;
    --border-color: #ddd;
    --input-bg: #fff;
    --sent-msg-bg: #e3f2fd;
    --received-msg-bg: #f1f1f1;
    --button-color: #4285f4;
    --button-text: #fff;
    --modal-overlay: rgba(0, 0, 0, 0.5);
    --text-input-border: #ddd;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --voice-button-bg: #4285f4;
    --voice-button-active: #3367d6;
    --text-secondary: #757575;
    --modal-header-bg: #f8f9fa;
    --modal-footer-bg: #f8f9fa;
    --setting-group-bg: #ffffff;
    --setting-group-border: #e0e0e0;
    --tab-active-bg: #4285f4;
    --tab-active-text: #ffffff;
    --tab-hover-bg: #f0f0f0;
}

[data-theme="dark"] {
    --primary-color: #64b5f6;
    --theme-color: #64b5f6;
    --text-color: #e0e0e0;
    --bg-color: #121212;
    --chat-bg: #1e1e1e;
    --border-color: #333;
    --input-bg: #2c2c2c;
    --sent-msg-bg: #0d47a1;
    --received-msg-bg: #424242;
    --button-color: #64b5f6;
    --button-text: #fff;
    --modal-overlay: rgba(0, 0, 0, 0.7);
    --text-input-border: #444;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --voice-button-bg: #0d47a1;
    --voice-button-active: #1565c0;
    --text-secondary: #9e9e9e;
    --modal-header-bg: #2c2c2c;
    --modal-footer-bg: #2c2c2c;
    --setting-group-bg: #333333;
    --setting-group-border: #444444;
    --tab-active-bg: #64b5f6;
    --tab-active-text: #ffffff;
    --tab-hover-bg: #3a3a3a;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.chat-container {
    flex: 1;
    overflow-y: auto;
    background-color: var(--chat-bg);
    border-radius: 10px;
    box-shadow: 0 2px 10px var(--shadow-color);
    padding: 20px;
    margin-bottom: 20px;
    position: relative;
}

.settings-button {
    cursor: pointer;
    color: var(--primary-color);
    padding: 5px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

.settings-button:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.language-selector select {
    padding: 8px;
    background-color: var(--input-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
}

.message {
    display: flex;
    flex-direction: column;
    margin-bottom: 20px;
    animation: fadeIn 0.3s;
}

.message.sent {
    align-items: flex-end;
}

.message.received {
    align-items: flex-start;
}

.message-content {
    max-width: 80%;
    padding: 12px;
    border-radius: 18px;
}

.message.sent .message-content {
    background-color: var(--sent-msg-bg);
    color: var(--text-color);
    border-bottom-right-radius: 4px;
}

.message.received .message-content {
    background-color: var(--received-msg-bg);
    color: var(--text-color);
    border-bottom-left-radius: 4px;
}

.message-time {
    font-size: 0.8em;
    color: #888;
    margin-top: 5px;
}

.input-area {
    display: flex;
    flex-direction: column;
}

.text-mode {
    display: flex;
    align-items: center;
    background-color: var(--input-bg);
    border-radius: 24px;
    padding: 10px;
    box-shadow: 0 2px 6px var(--shadow-color);
}

.voice-mode {
    display: none;
    align-items: center;
    justify-content: space-between;
    background-color: var(--input-bg);
    border-radius: 24px;
    padding: 10px;
    box-shadow: 0 2px 6px var(--shadow-color);
}

#textInput {
    flex: 1;
    border: none;
    outline: none;
    background-color: transparent;
    padding: 8px;
    resize: none;
    overflow: hidden;
    color: var(--text-color);
}

.send-btn, .add-btn, .mic-btn, .keyboard-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.send-btn:hover, .add-btn:hover, .mic-btn:hover {
    opacity: 0.8;
}

.voice-btn {
    flex: 1;
    background-color: var(--voice-button-bg);
    color: white;
    border: none;
    border-radius: 20px;
    padding: 12px 24px;
    font-size: 16px;
    cursor: pointer;
    margin: 0 10px;
    transition: background-color 0.2s;
}

.voice-btn:active {
    background-color: var(--voice-button-active);
}

.voice-bubble {
    display: none;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 10px 20px;
    border-radius: 20px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    align-items: center;
    gap: 10px;
}

.recording-indicator {
    display: flex;
    align-items: center;
}

.recording-pulse {
    width: 10px;
    height: 10px;
    background-color: red;
    border-radius: 50%;
    margin-right: 8px;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(0.8);
        opacity: 0.7;
    }
    50% {
        transform: scale(1.2);
        opacity: 1;
    }
    100% {
        transform: scale(0.8);
        opacity: 0.7;
    }
}

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

/* Settings Modal Styles */
.modal-container {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-container.active {
    display: flex;
}

.modal-content {
    background-color: var(--chat-bg);
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    width: 600px;
    max-width: 90%;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    animation: modalFadeIn 0.25s ease-out;
    overflow: hidden;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--modal-header-bg);
    position: sticky;
    top: 0;
    z-index: 10;
}

.modal-header h2 {
    font-size: 1.3rem;
    font-weight: 500;
    margin: 0;
    color: var(--text-color);
}

.close-button {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-color);
    padding: 0;
    line-height: 1;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.close-button:hover {
    background-color: rgba(0, 0, 0, 0.08);
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-top: 1px solid var(--border-color);
    background-color: var(--modal-footer-bg);
    position: sticky;
    bottom: 0;
    z-index: 10;
}

.button-group {
    display: flex;
    gap: 10px;
}

.settings-tabs {
    display: flex;
    justify-content: flex-start;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.tab-button {
    background: none;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-color);
    position: relative;
    transition: all 0.3s ease;
    opacity: 0.7;
    border-bottom: 2px solid transparent;
}

.tab-button:hover {
    opacity: 1;
    background-color: rgba(128, 128, 128, 0.1);
}

.tab-button.active {
    opacity: 1;
    font-weight: 600;
    border-bottom: 2px solid var(--theme-color);
    color: var(--theme-color);
}

/* 确保在不同主题下标签可见 */
.light-theme .tab-button {
    color: #333;
}

.light-theme .tab-button.active {
    color: var(--theme-color);
}

.dark-theme .tab-button {
    color: #eee;
}

.dark-theme .tab-button.active {
    color: var(--theme-color);
}

/* 标签内容 */
.tab-content {
    padding: 10px 0;
}

.setting-group {
    background-color: var(--setting-group-bg);
    border: 1px solid var(--setting-group-border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.setting-group h3 {
    margin-top: 0;
    margin-bottom: 16px;
    font-size: 1.1rem;
    color: var(--text-color);
    font-weight: 500;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-color);
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--input-bg);
    color: var(--text-color);
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--theme-color);
    box-shadow: 0 0 0 2px rgba(66, 133, 244, 0.2);
}

.form-group input[type="range"] {
    margin-top: 5px;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: #ddd;
    outline: none;
    border-radius: 3px;
    cursor: pointer;
}

.form-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--theme-color);
    border-radius: 50%;
    cursor: pointer;
}

.test-voice-btn {
    padding: 8px 15px;
    background-color: var(--theme-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.2s;
}

.test-voice-btn:hover {
    background-color: var(--voice-button-active);
}

.save-btn {
    padding: 10px 20px;
    background-color: var(--theme-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.2s;
}

.save-btn:hover {
    background-color: var(--voice-button-active);
}

.reset-btn {
    padding: 10px 20px;
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}

.reset-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
    border-color: var(--text-color);
}

.theme-selector {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.theme-option {
    text-align: center;
}

.theme-option input[type="radio"] {
    display: none;
}

.theme-preview {
    width: 70px;
    height: 70px;
    border-radius: 8px;
    margin-bottom: 8px;
    border: 2px solid transparent;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: all 0.2s;
}

.theme-option input[type="radio"]:checked + label .theme-preview {
    border-color: var(--theme-color);
    box-shadow: 0 0 0 3px rgba(66, 133, 244, 0.3);
}

.light-preview {
    background-color: #ffffff;
    border: 1px solid #e0e0e0;
}

.dark-preview {
    background-color: #212121;
    border: 1px solid #424242;
}

.system-preview {
    background: linear-gradient(135deg, #ffffff 50%, #212121 50%);
    border: 1px solid #e0e0e0;
}

.toggle-switch {
    display: flex;
    align-items: center;
}

.toggle {
    position: relative;
    width: 56px;
    height: 28px;
    margin: 0 12px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle label {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    border-radius: 28px;
    cursor: pointer;
    transition: 0.4s;
}

.toggle label:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    top: 50%;
    transform: translateY(-50%);
    background-color: white;
    border-radius: 50%;
    transition: 0.4s;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.toggle input:checked + label {
    background-color: var(--theme-color);
}

.toggle input:checked + label:before {
    transform: translateX(28px) translateY(-50%);
}

.sync-status {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-style: italic;
}

.debug-info {
    margin-top: 10px;
    padding: 10px;
    background-color: #f5f5f5;
    border-radius: 4px;
    font-family: monospace;
    font-size: 12px;
    max-height: 150px;
    overflow-y: auto;
}

/* Loading Spinner */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .modal-content {
        width: 95%;
    }
    
    .message-content {
        max-width: 90%;
    }
}

/* 控制区域样式 */
.controls-area {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding: 10px 15px;
    background-color: var(--input-bg);
    border-radius: 10px;
    box-shadow: 0 2px 6px var(--shadow-color);
}

.language-selector {
    flex: 1;
}

.language-selector select {
    padding: 8px;
    background-color: var(--input-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    min-width: 100px;
}

.settings-button {
    cursor: pointer;
    color: var(--primary-color);
    padding: 5px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

.settings-button:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

/* 开关按钮样式 */
.toggle-container {
    display: flex;
    align-items: center;
    margin: 5px 0;
}

.toggle-checkbox {
    height: 0;
    width: 0;
    visibility: hidden;
}

.toggle-label {
    cursor: pointer;
    width: 50px;
    height: 24px;
    background: #ccc;
    display: block;
    border-radius: 24px;
    position: relative;
    transition: 0.3s;
}

.toggle-label:after {
    content: "";
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: #fff;
    border-radius: 18px;
    transition: 0.3s;
}

.toggle-checkbox:checked + .toggle-label {
    background: var(--primary-color);
}

.toggle-checkbox:checked + .toggle-label:after {
    left: calc(100% - 2px);
    transform: translateX(-100%);
}

.toggle-text {
    margin-left: 10px;
    font-size: 14px;
}

/* Modal Animation */
@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 成功消息模态框 */
.success-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    background-color: var(--setting-group-bg);
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    padding: 20px;
    text-align: center;
    opacity: 0;
    transition: all 0.3s ease-in-out;
    z-index: 1001;
    min-width: 200px;
    pointer-events: none;
}

.success-modal.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.success-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.success-icon {
    font-size: 48px;
    color: #4caf50;
    margin-bottom: 10px;
}

.success-message {
    font-size: 18px;
    color: var(--text-color);
    font-weight: 500;
}

/* 输入字段错误状态 */
.form-group .invalid {
    border-color: #f44336 !important;
    box-shadow: 0 0 0 1px #f44336 !important;
}

#apiKeyError {
    color: #f44336;
    font-size: 12px;
    margin-top: 5px;
    display: none;
}

.doc-btn {
    margin-left: 16px;
    padding: 8px 20px;
    background: #f5f5f5;
    border: 1px solid #d0d0d0;
    border-radius: 6px;
    font-size: 16px;
    color: #333;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.doc-btn:hover {
    background: #e0eaff;
    color: #1976d2;
}

.doc-btn.active {
    background: #1976d2;
    color: #fff;
    border-color: #1976d2;
}

#docTextArea {
    width: 100%;
    height: 400px;
    font-size: 20px;
    line-height: 1.7;
    resize: none;
    overflow: auto;
    display: block;
    margin: 0 auto;
    box-sizing: border-box;
    border: 2px solid #1976d2;
    border-radius: 6px;
    background: #fff;
    color: #222;
}

#voice-status, #docPlayHighlight {
    margin: 16px 0;
    font-size: 20px;
    color: #1976d2;
    min-height: 32px;
    font-weight: bold;
    word-break: break-all;
    transition: all 0.2s;
    text-align: left;
    padding: 4px 0 0 0;
}

/* 语音克隆设置样式 */
#voiceCloneSettings {
    margin-top: 15px;
    padding: 15px;
    background-color: var(--setting-group-bg);
    border: 1px solid var(--setting-group-border);
    border-radius: 8px;
}

#audioFileSelect {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--input-bg);
    color: var(--text-color);
}

#audioFileSelect:focus {
    border-color: var(--theme-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(66, 133, 244, 0.2);
}

#voiceSettings {
    margin-top: 15px;
    padding: 15px;
    background-color: var(--setting-group-bg);
    border: 1px solid var(--setting-group-border);
    border-radius: 8px;
}

#voiceSettings label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
}

#voiceSettings select,
#voiceSettings input[type="range"] {
    width: 100%;
    margin-bottom: 15px;
}