* {
    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;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px;
    text-align: center;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    padding: 40px;
    background: #f8f9fa;
}

.skill-card {
    background: white;
    padding: 30px;
    text-align: center;
    border-radius: 15px;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.skill-icon {
    font-size: 3em;
    margin-bottom: 15px;
}

.skill-card h2 {
    color: #667eea;
    margin-bottom: 10px;
}

.content-area {
    padding: 40px;
    background: white;
    min-height: 500px;
}

.welcome-message {
    text-align: center;
    color: #666;
}

.question-card {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.question-card h3 {
    color: #667eea;
    margin-bottom: 15px;
}

.audio-player {
    width: 100%;
    margin: 20px 0;
}

textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    font-family: inherit;
    resize: vertical;
}

textarea:focus {
    outline: none;
    border-color: #667eea;
}

button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 16px;
    margin-top: 15px;
    transition: transform 0.2s;
}

button:hover {
    transform: scale(1.05);
}

.result {
    margin-top: 20px;
    padding: 15px;
    border-radius: 10px;
    background: #e8f5e9;
    border-left: 4px solid #4caf50;
}

.student-name-input {
    margin-bottom: 20px;
    padding: 10px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    width: 100%;
    max-width: 300px;
}

.record-button {
    background: #ff4757;
    margin-right: 10px;
}

.record-button.recording {
    background: #ff6b81;
    animation: pulse 1s infinite;
}

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

@media (max-width: 768px) {
    .skills-grid {
        grid-template-columns: 1fr;
        padding: 20px;
    }
    
    header h1 {
        font-size: 1.8em;
    }
    
    .content-area {
        padding: 20px;
    }
}