:root {
    --primary-color: #0066cc;
    --primary-hover: #0052a3;
    --danger-color: #dc3545;
    --danger-hover: #c82333;
    --bg-color: #f0f2f5;
    --card-bg: #ffffff;
    --text-color: #333333;
    --border-color: #e4e7eb;
    --border-radius: 12px;
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px 10px;
    display: flex;
    justify-content: center;
    min-height: 100vh;
}

.container {
    max-width: 900px;
    width: 100%;
    background: var(--card-bg);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
}

/* 顶部语言切换器 */
.ui-lang-switcher {
    text-align: right;
    margin-bottom: 15px;
    font-size: 0.9em;
    color: #555;
}

.ui-lang-switcher select {
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.95em;
    background-color: #f8f9fa;
    border: 1px solid #ced4da;
    outline: none;
    cursor: pointer;
    transition: border-color 0.2s;
}

.ui-lang-switcher select:focus {
    border-color: var(--primary-color);
}

header {
    text-align: center;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

h1 {
    margin: 0 0 8px 0;
    color: #1a1a1a;
    font-size: 1.8rem;
}

header p {
    color: #666;
    margin: 0;
    font-size: 0.95rem;
}

/* 控制区域 */
.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 25px;
    background: #f8f9fa;
    padding: 15px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
    min-width: 180px;
    max-width: 250px;
}

.form-group label {
    font-size: 0.95rem;
    font-weight: 500;
    color: #444;
}

.controls select {
    width: 100%;
    padding: 12px 16px;
    border-radius: 8px;
    border: 1px solid #ced4da;
    font-size: 1rem;
    outline: none;
    cursor: pointer;
    background-color: #fff;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    appearance: none; /* 移除默认箭头 */
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
}

.controls select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.15);
}

.button-group {
    display: flex;
    gap: 10px;
    flex: 1;
    min-width: 200px;
    justify-content: flex-end;
}

.btn {
    flex: 1;
    padding: 10px 16px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn-primary {
    background-color: var(--primary-color);
    box-shadow: 0 2px 4px rgba(0, 102, 204, 0.2);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-danger {
    background-color: var(--danger-color);
    box-shadow: 0 2px 4px rgba(220, 53, 69, 0.2);
}

.btn-danger:hover:not(:disabled) {
    background-color: var(--danger-hover);
    transform: translateY(-1px);
}

/* 状态栏 */
.status-bar {
    margin-bottom: 20px;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 15px;
    background-color: #fff;
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

.status-disconnected {
    color: var(--danger-color);
    font-weight: 600;
}

.status-connected {
    color: #28a745;
    font-weight: 600;
}

.status-recording {
    color: #e67e22;
    font-weight: 600;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.6; }
    100% { opacity: 1; }
}

/* 结果展示区域 */
.results-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    flex-grow: 1;
}

.result-box {
    background: #fafafa;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.result-box h3 {
    margin: 0;
    font-size: 1rem;
    color: #444;
    background-color: #f1f3f5;
    border-bottom: 1px solid var(--border-color);
    padding: 12px 15px;
}

.text-container {
    flex-grow: 1;
    min-height: 200px;
    max-height: 400px;
    overflow-y: auto;
    font-size: 1.05rem;
    line-height: 1.6;
    padding: 15px;
    background: #fff;
}

.placeholder {
    color: #adb5bd;
    font-style: italic;
    text-align: center;
    margin-top: 40px;
}

.message-item {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px dashed #e9ecef;
}

.message-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.message-partial {
    color: #6c757d;
}

.message-completed {
    color: #212529;
    font-weight: 400;
}

/* 响应式设计 - 手机端适配 */
@media (max-width: 768px) {
    body {
        padding: 10px 5px;
    }

    .container {
        padding: 15px;
    }

    h1 {
        font-size: 1.4rem;
    }

    .controls {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 12px;
    }

    .form-group {
        width: 100%;
        max-width: none;
    }

    .button-group {
        width: 100%;
        margin-top: 5px;
    }

    .btn {
        padding: 12px;
        font-size: 1.05rem;
    }

    .results-container {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .text-container {
        min-height: 150px;
        max-height: 250px;
    }
}