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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.container {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(31, 38, 135, 0.37);
    border: 1px solid rgba(255, 255, 255, 0.18);
    max-width: 600px;
    width: 90%;
    text-align: center;
}

h1 {
    margin-bottom: 2rem;
    font-size: 2.5rem;
    background: linear-gradient(45deg, #fff, #f0f0f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.status {
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.2);
    font-size: 1.1rem;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.status.listening {
    background: rgba(76, 175, 80, 0.3);
    border: 2px solid rgba(76, 175, 80, 0.5);
    animation: pulse 2s infinite;
}

.status.thinking {
    background: rgba(255, 193, 7, 0.3);
    border: 2px solid rgba(255, 193, 7, 0.5);
}

.status.speaking {
    background: rgba(33, 150, 243, 0.3);
    border: 2px solid rgba(33, 150, 243, 0.5);
    animation: wave 1s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes wave {
    0%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(1.1); }
}

.controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin: 2rem 0;
    flex-wrap: wrap;
}

button {
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
}

.start-btn {
    background: linear-gradient(45deg, #4CAF50, #45a049);
    color: white;
}

.start-btn:hover:not(:disabled) {
    background: linear-gradient(45deg, #45a049, #4CAF50);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.4);
}

.stop-btn {
    background: linear-gradient(45deg, #f44336, #d32f2f);
    color: white;
}

.stop-btn:hover:not(:disabled) {
    background: linear-gradient(45deg, #d32f2f, #f44336);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(244, 67, 54, 0.4);
}

.download-btn {
    background: linear-gradient(45deg, #FF9800, #F57C00);
    color: white;
}

.download-btn:hover:not(:disabled) {
    background: linear-gradient(45deg, #F57C00, #FF9800);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 152, 0, 0.4);
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.transcript {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    padding: 1rem;
    margin-top: 2rem;
    max-height: 300px;
    overflow-y: auto;
    text-align: left;
}

.transcript-item {
    margin: 0.5rem 0;
    padding: 0.5rem;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
}

.transcript-user {
    background: rgba(76, 175, 80, 0.2);
}

.transcript-agent {
    background: rgba(33, 150, 243, 0.2);
}

.error {
    background: rgba(244, 67, 54, 0.3);
    border: 2px solid rgba(244, 67, 54, 0.5);
    color: #ffebee;
}

.mic-icon {
    display: inline-block;
    margin-right: 0.5rem;
    font-size: 1.2rem;
}

.volume-indicator {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    margin-top: 1rem;
    overflow: hidden;
}

.volume-bar {
    height: 100%;
    background: linear-gradient(90deg, #4CAF50, #2196F3, #FF9800);
    width: 0%;
    transition: width 0.1s ease;
}

.session-info {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem;
    border-radius: 8px;
    margin: 1rem 0;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

.parent-nudge-section {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 15px;
    margin: 1.5rem 0;
    text-align: left;
}

.parent-nudge-section h3 {
    margin: 0 0 1rem 0;
    font-size: 1.2rem;
    color: white;
    text-align: center;
}

.parent-nudge-section textarea {
    width: 100%;
    padding: 0.8rem;
    border: none;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.9);
    color: #333;
    font-size: 0.9rem;
    resize: vertical;
    margin-bottom: 1rem;
}

.nudge-btn {
    background: linear-gradient(45deg, #9C27B0, #673AB7);
    color: white;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 25px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: block;
    margin: 0 auto;
}

.nudge-btn:hover {
    background: linear-gradient(45deg, #673AB7, #9C27B0);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(156, 39, 176, 0.4);
}

.nudge-status {
    margin-top: 1rem;
    padding: 0.5rem;
    border-radius: 5px;
    text-align: center;
    font-size: 0.9rem;
    display: none;
}

.nudge-status.success {
    background: rgba(76, 175, 80, 0.3);
    color: #c8e6c9;
    display: block;
}

.nudge-status.error {
    background: rgba(244, 67, 54, 0.3);
    color: #ffcdd2;
    display: block;
}

.user-section {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 15px;
    margin: 1.5rem 0;
    text-align: center;
}

.user-section h3 {
    margin: 0 0 1rem 0;
    font-size: 1.2rem;
    color: white;
}

.user-section input {
    width: 100%;
    max-width: 300px;
    padding: 0.8rem;
    border: none;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.9);
    color: #333;
    font-size: 1rem;
    margin-bottom: 1rem;
    text-align: center;
}

.user-btn {
    background: linear-gradient(45deg, #2196F3, #1976D2);
    color: white;
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.user-btn:hover {
    background: linear-gradient(45deg, #1976D2, #2196F3);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.4);
}

.user-status {
    margin-top: 1rem;
    padding: 0.5rem;
    border-radius: 5px;
    font-size: 0.9rem;
    display: none;
}

.user-status.success {
    background: rgba(76, 175, 80, 0.3);
    color: #c8e6c9;
    display: block;
}

.user-status.error {
    background: rgba(244, 67, 54, 0.3);
    color: #ffcdd2;
    display: block;
}