:root {
    --primary-color: #4285f4;
    --secondary-color: #34a853;
    --danger-color: #ea4335;
    --warning-color: #fbbc05;
    --text-color: #333;
    --bg-color: #f5f5f5;
    --card-color: #fff;
    --border-color: #ddd;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

.dark-theme {
    --primary-color: #8ab4f8;
    --secondary-color: #81c995;
    --danger-color: #f28b82;
    --warning-color: #fde293;
    --text-color: #e8eaed;
    --bg-color: #202124;
    --card-color: #303134;
    --border-color: #5f6368;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--card-color);
    border-radius: 10px;
    box-shadow: 0 4px 6px var(--shadow-color);
    padding: 20px;
    overflow: hidden;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 5px 10px;
    border-radius: 5px;
}

.theme-toggle:hover {
    background-color: var(--border-color);
}

.status-indicator {
    margin-bottom: 20px;
}

.mic-status {
    display: flex;
    align-items: center;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 10px;
    font-weight: bold;
}

.mic-status i {
    margin-right: 10px;
    font-size: 1.2rem;
}

.mic-status.offline {
    background-color: rgba(234, 67, 53, 0.1);
    color: var(--danger-color);
}

.mic-status.online {
    background-color: rgba(52, 168, 83, 0.1);
    color: var(--secondary-color);
}

.audio-visualizer {
    width: 100%;
    height: 30px;
    background-color: var(--border-color);
    border-radius: 15px;
    overflow: hidden;
    margin-top: 10px;
}

.audio-bar {
    height: 100%;
    width: 0%;
    background-color: var(--primary-color);
    transition: width 0.1s;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.btn {
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-grow: 1;
    justify-content: center;
}

.btn i {
    font-size: 1rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.connect {
    background-color: var(--primary-color);
    color: white;
}

#disconnect-btn {
    background-color: var(--danger-color);
    color: white;
}

#start-btn {
    background-color: var(--secondary-color);
    color: white;
}

#stop-btn {
    background-color: var(--danger-color);
    color: white;
}

#download-btn {
    background-color: var(--warning-color);
    color: #333;
}

#clear-btn {
    background-color: var(--border-color);
    color: var(--text-color);
}

.transcription-container {
    margin-bottom: 20px;
}

.transcription-result {
    min-height: 200px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    padding: 15px;
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow-y: auto;
    max-height: 300px;
    user-select: none;
}

footer {
    text-align: center;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
    color: var(--text-color);
    font-size: 0.8rem;
}

@media (max-width: 600px) {
    .container {
        padding: 15px;
    }
    
    .controls {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .theme-toggle {
        align-self: flex-end;
    }
}