/* css/style.css */
* {
    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: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    overflow: hidden;
}

h1 {
    background: linear-gradient(45deg, #4facfe, #00f2fe);
    color: white;
    text-align: center;
    padding: 30px;
    margin: 0;
    font-size: 2.5em;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.section {
    padding: 25px;
    border-bottom: 1px solid #eee;
}

.section:last-child {
    border-bottom: none;
}

h2 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.4em;
    border-left: 4px solid #4facfe;
    padding-left: 15px;
}

.btn {
    background: linear-gradient(45deg, #4facfe, #00f2fe);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    margin: 5px;
    text-decoration: none;
    display: inline-block;
    min-width: 120px;
    text-align: center;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(79, 172, 254, 0.4);
}

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

.btn-primary {
    background: linear-gradient(45deg, #4facfe, #00f2fe);
}

.btn-secondary {
    background: linear-gradient(45deg, #a8edea, #fed6e3);
    color: #333;
}

.btn-record {
    background: linear-gradient(45deg, #ff6b6b, #ee5a52);
    font-size: 18px;
    padding: 15px 30px;
}

.btn-stop {
    background: linear-gradient(45deg, #ff8a00, #e52e71);
}

.btn-play {
    background: linear-gradient(45deg, #56ab2f, #a8e6cf);
}

.btn-danger {
    background: linear-gradient(45deg, #ff416c, #ff4b2b);
}

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

.file-input {
    width: 100%;
    padding: 12px;
    border: 2px dashed #4facfe;
    border-radius: 10px;
    background: #f8f9ff;
    margin-bottom: 15px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-input:hover {
    background: #f0f4ff;
    border-color: #00f2fe;
}

.info-box {
    background: linear-gradient(45deg, #a8edea, #fed6e3);
    padding: 15px;
    border-radius: 10px;
    margin-top: 15px;
    border-left: 4px solid #4facfe;
}

.status {
    background: #f8f9fa;
    padding: 12px;
    border-radius: 8px;
    margin: 10px 0;
    border-left: 4px solid #28a745;
    font-weight: 500;
}

.status.processing {
    border-left-color: #ffc107;
    background: #fff8e1;
}

.