html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    overflow-x: hidden;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    box-sizing: border-box;
}

h1 {
    text-align: center;
    color: white;
    margin-bottom: 40px;
    font-size: 2.5rem;
    font-weight: 300;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.upload-section, .action-section, .result-section {
    background: white;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
}

/* 输入按钮区域样式 */
.input-buttons {
    display: flex;
    gap: 20px;
    align-items: stretch;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.file-input-wrapper, .record-wrapper {
    flex: 1;
    min-width: 200px;
    text-align: center;
}

.file-input-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-btn, .convert-btn, .stream-convert-btn, .record-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    margin: 0 10px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 48px;
}

/* 录制按钮特殊样式 */
.record-btn {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
    position: relative;
    overflow: hidden;
}

.record-btn.recording {
    background: linear-gradient(135deg, #ff4757 0%, #c44569 100%);
    animation: recordingPulse 1.5s ease-in-out infinite;
}

.record-btn.stopping {
    background: linear-gradient(135deg, #ffa502 0%, #ff6348 100%);
    cursor: not-allowed;
}

@keyframes recordingPulse {
    0%, 100% { 
        box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
    }
    50% { 
        box-shadow: 0 4px 25px rgba(255, 107, 107, 0.8), 0 0 20px rgba(255, 107, 107, 0.3);
    }
}

.stream-convert-btn {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    box-shadow: 0 4px 15px rgba(240, 147, 251, 0.4);
}

.upload-btn:hover, .convert-btn:hover:not(:disabled), .stream-convert-btn:hover:not(:disabled), .record-btn:hover:not(:disabled):not(.recording):not(.stopping) {
    transform: translateY(-2px);
}

.record-btn:hover:not(:disabled):not(.recording):not(.stopping) {
    box-shadow: 0 6px 20px rgba(255, 107, 107, 0.6);
}

.convert-btn:hover:not(:disabled) {
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.stream-convert-btn:hover:not(:disabled) {
    box-shadow: 0 6px 20px rgba(240, 147, 251, 0.6);
}

.convert-btn:disabled, .stream-convert-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.file-info {
    margin-top: 20px;
}

.file-selected, .file-recorded {
    border-radius: 8px;
    padding: 20px;
    text-align: center;
}

.file-selected {
    background: #f8f9ff;
    border: 2px dashed #667eea;
}

.file-recorded {
    background: #fff8f8;
    border: 2px dashed #ff6b6b;
}

.file-selected p, .file-recorded p {
    margin: 8px 0;
    color: #444;
}

/* 录制状态指示器 */
.record-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 10px;
    padding: 8px 16px;
    background: rgba(255, 107, 107, 0.1);
    border-radius: 20px;
    color: #ff4757;
    font-size: 14px;
    font-weight: 500;
}

.recording-indicator {
    width: 8px;
    height: 8px;
    background: #ff4757;
    border-radius: 50%;
    animation: recordingBlink 1s ease-in-out infinite;
}

@keyframes recordingBlink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0.3; }
}

/* 录制区域样式 */
.record-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.action-section {
    text-align: center;
}

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    color: #667eea;
    font-size: 18px;
    font-weight: 500;
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.result h3 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.result-text {
    background: #f8f9ff;
    border-left: 4px solid #667eea;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 4px;
    font-size: 16px;
    line-height: 1.6;
}

.audio-info h4, .utterances h4 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.audio-info p {
    margin: 8px 0;
    color: #666;
}

.utterances ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.utterances li {
    background: #f5f5f5;
    margin-bottom: 10px;
    padding: 15px;
    border-radius: 6px;
    border-left: 3px solid #667eea;
}

.timestamp {
    display: inline-block;
    background: #667eea;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    margin-right: 10px;
}

.text {
    color: #333;
    line-height: 1.5;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    h1 {
        font-size: 2rem;
        margin-bottom: 30px;
    }
    
    .upload-section, .action-section, .result-section {
        padding: 20px;
        margin-bottom: 15px;
    }
    
    .upload-btn, .convert-btn, .stream-convert-btn, .record-btn {
        padding: 12px 24px;
        font-size: 14px;
        margin: 5px;
        display: inline-flex;
        width: auto;
        min-width: 120px;
    }
    
    .input-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .file-input-wrapper, .record-wrapper {
        min-width: auto;
        width: 100%;
    }
}

/* 头部样式 */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.header h1 {
    margin: 0;
}

.settings-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.settings-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(15deg);
}

.settings-btn svg {
    color: white;
}

/* 弹窗样式 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: white;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 24px 0;
    border-bottom: 1px solid #eee;
    margin-bottom: 0;
    padding-bottom: 16px;
}

.modal-header h2 {
    margin: 0;
    color: #333;
    font-size: 1.5rem;
    font-weight: 500;
}

.close-btn {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: #999;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.close-btn:hover {
    background: #f5f5f5;
    color: #666;
}

.modal-body {
    padding: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
    box-sizing: border-box;
    background: #fafbfc;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input::placeholder {
    color: #999;
}

.modal-footer {
    padding: 0 24px 24px;
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

.save-btn, .cancel-btn {
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.save-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.save-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.cancel-btn {
    background: #f8f9fa;
    color: #666;
    border: 1px solid #e1e5e9;
}

.cancel-btn:hover {
    background: #e9ecef;
}

/* 响应式设计扩展 */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    
    .settings-btn {
        position: absolute;
        top: 20px;
        right: 20px;
    }
    
    .modal-content {
        width: 95%;
        margin: 20px;
    }
    
    .modal-header, .modal-body, .modal-footer {
        padding-left: 16px;
        padding-right: 16px;
    }
    
    .modal-footer {
        flex-direction: column-reverse;
    }
    
    .save-btn, .cancel-btn {
        width: 100%;
    }
}