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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    max-width: 600px;
    width: 100%;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    overflow: hidden;
}

.header {
    background: linear-gradient(135deg, #92a0e0 0%, #151724 100%);
    color: white;
    padding: 40px;
    text-align: center;
}

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

.header p {
    opacity: 0.9;
    font-size: 1.1em;
}

.error-message {
    color: #721c24;
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 1em;
}

.password-form {
    text-align: center;
}

.password-form h2 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.5em;
}

.password-form p {
    color: #666;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #333;
    font-weight: 500;
}

.form-group input[type="password"] {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1em;
}

.content {
    padding: 40px;
}

.upload-area {
    border: 2px dashed #ddd;
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: #667eea;
    background: #f8f9ff;
}

.upload-area i {
    font-size: 48px;
    color: #667eea;
    margin-bottom: 15px;
    display: block;
}

.upload-area h3 {
    color: #333;
    margin-bottom: 10px;
}

.upload-area p {
    color: #666;
    font-size: 0.9em;
}

.file-info {
    margin-top: 15px;
    color: #667eea;
    font-weight: 500;
}

.btn {
    background: linear-gradient(135deg, #92a0e0 0%, #151724 100%);
    color: white;
    border: none;
    padding: 15px 40px;
    border-radius: 50px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    width: 100%;
}

.btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.message {
    padding: 15px;
    border-radius: 10px;
    margin: 20px 0;
    display: none;
}

.message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

.share-link {
    background: #f8f9ff;
    border-radius: 10px;
    padding: 20px;
    margin-top: 20px;
    border: 1px solid #667eea;
}

.share-link h3 {
    color: #333;
    margin-bottom: 10px;
}

.link-container {
    display: flex;
    gap: 10px;
}

.link-container input {
    flex: 1;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 0.9em;
}

.copy-btn {
    background: #667eea;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.copy-btn:hover {
    background: #764ba2;
}

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
    text-align: center;
}

.feature {
    padding: 20px;
}

.feature i {
    font-size: 24px;
    color: #667eea;
    margin-bottom: 10px;
    display: block;
}

.feature h4 {
    color: #333;
    margin-bottom: 5px;
}

.feature p {
    color: #666;
    font-size: 0.85em;
}

@media (max-width: 768px) {
    .header {
	padding: 30px;
    }
    
    .content {
	padding: 20px;
    }
    
    .features {
	grid-template-columns: 1fr;
	gap: 10px;
    }
}

.info {
    margin-top: 30px;
    padding: 20px;
    background: #f8f9ff;
    border-radius: 10px;
    color: #666;
    font-size: 0.9em;
    text-align: center;
}

.back-link {
    display: inline-block;
    margin-top: 20px;
    color: #667eea;
    text-decoration: none;
}

.back-link:hover {
    text-decoration: underline;
}