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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 500px;
}

.card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    padding: 40px;
}

h1 {
    color: #333;
    font-size: 28px;
    margin-bottom: 10px;
    text-align: center;
}

.subtitle {
    color: #666;
    font-size: 14px;
    text-align: center;
    margin-bottom: 30px;
    line-height: 1.5;
}

.section {
    margin-bottom: 30px;
}

.section.hidden {
    display: none;
}

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

label {
    display: block;
    color: #333;
    font-weight: 500;
    margin-bottom: 8px;
    font-size: 14px;
}

input[type="text"],
textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s;
}

input[type="text"]:focus,
textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

.btn {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 10px;
}

.btn:last-child {
    margin-bottom: 0;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

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

.btn-success {
    background: #48bb78;
    color: white;
}

.btn-success:hover {
    background: #38a169;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(72, 187, 120, 0.4);
}

.btn-success:active {
    transform: translateY(0);
}

.btn-secondary {
    background: #e2e8f0;
    color: #333;
}

.btn-secondary:hover {
    background: #cbd5e0;
    transform: translateY(-2px);
}

.btn-secondary:active {
    transform: translateY(0);
}

.btn.hidden {
    display: none;
}

.status-box {
    background: #f7fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.status-message {
    font-size: 16px;
    color: #333;
    margin-bottom: 10px;
    font-weight: 500;
}

.status-details {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.status-details.success {
    color: #22863a;
    background: #f0f8f4;
    padding: 10px;
    border-radius: 4px;
    border-left: 4px solid #48bb78;
}

.status-details.error {
    color: #cb2431;
    background: #ffeef0;
    padding: 10px;
    border-radius: 4px;
    border-left: 4px solid #f56565;
}

.status-details.pending {
    color: #6f42c1;
    background: #f5f0ff;
    padding: 10px;
    border-radius: 4px;
    border-left: 4px solid #667eea;
}

.error-box {
    background: #ffeef0;
    border: 1px solid #f56565;
    border-radius: 6px;
    padding: 15px;
    color: #cb2431;
    margin-bottom: 20px;
    font-size: 14px;
}

.error-box.hidden {
    display: none;
}

.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 8px;
    vertical-align: middle;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #667eea;
    font-weight: 500;
}

@media (max-width: 480px) {
    .card {
        padding: 25px;
    }

    h1 {
        font-size: 24px;
    }

    .subtitle {
        font-size: 13px;
    }

    .btn {
        padding: 10px;
        font-size: 14px;
    }
}