:root {
    --primary-color: #4a90e2;
    --secondary-color: #2c3e50;
    --success-color: #27ae60;
    --error-color: #e74c3c;
    --background-color: #f5f6fa;
    --text-color: #2c3e50;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

h1 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    text-align: center;
}

.hidden {
    display: none !important;
}

.upload-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.option {
    background: none;
    padding: 0;
    border-radius: 0;
    box-shadow: none;
}

button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #357abd;
}

button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

input[type="email"],
input[type="file"] {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

#media-container {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-top: 2rem;
}

#media-container img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

#media-container audio {
    width: 100%;
    margin-top: 1rem;
}

#success-message {
    text-align: center;
    padding: 2rem;
    background: var(--success-color);
    color: white;
    border-radius: 8px;
    margin-top: 2rem;
}

#recording-status {
    margin: 1rem 0;
    font-weight: 500;
}

@media (max-width: 600px) {
    .upload-options {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 1rem;
    }
}

.media-type-selection {
    margin-bottom: 2rem;
}

.media-type-selection h2 {
    text-align: center;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.media-type-btn {
    width: 100%;
    padding: 1.5rem;
    font-size: 1.2rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.media-type-btn:hover {
    background-color: #357abd;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.upload-section {
    margin-top: 2rem;
    margin-bottom: 2.5rem;
    padding: 1.5rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.upload-section.hidden {
    display: none;
}

.upload-section .option {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.upload-section .option button,
.upload-section .option label,
.upload-section .option input[type="file"] {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

#submit-btn {
    position: relative;
    min-width: 120px;
}

#submit-btn.loading {
    background-color: #ccc;
    cursor: not-allowed;
}

#submit-btn.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin: -10px 0 0 -10px;
    border: 3px solid #ffffff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: button-loading-spinner 1s linear infinite;
}

@keyframes button-loading-spinner {
    from {
        transform: rotate(0turn);
    }
    to {
        transform: rotate(1turn);
    }
}