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

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

.container {
    max-width: 400px;
    width: 90%;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    padding: 40px 30px;
    text-align: center;
}

.icon {
    width: 80px;
    height: 80px;
    background: #4CAF50;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 40px;
}

.icon.blue {
    background: #2196F3;
}

.icon.green {
    background: #4CAF50;
}

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

p {
    color: #666;
    margin-bottom: 30px;
    line-height: 1.5;
}

.btn {
    background: #2196F3;
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 10px;
    font-size: 18px;
    cursor: pointer;
    width: 100%;
    transition: all 0.3s ease;
    margin-bottom: 10px;
}

.btn:hover {
    background: #1976D2;
    transform: translateY(-2px);
}

.btn.green {
    background: #4CAF50;
}

.btn.green:hover {
    background: #45a049;
}

.btn.red {
    background: #f44336;
}

.btn.red:hover {
    background: #d32f2f;
}

.progress-container {
    margin: 20px 0;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: #e0e0e0;
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: #2196F3;
    width: 0%;
    transition: width 0.1s ease;
}

.progress-text {
    margin-top: 10px;
    color: #2196F3;
    font-weight: bold;
}

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

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

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #2196F3;
}

.error {
    color: #f44336;
    margin-top: 10px;
    font-size: 14px;
}

.success {
    color: #4CAF50;
    margin-top: 10px;
    font-size: 14px;
}

.hidden {
    display: none;
}

.admin-panel {
    text-align: left;
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.logout-btn {
    background: #f44336;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
}

.logout-btn:hover {
    background: #d32f2f;
}

.config-section {
    background: #f5f5f5;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.config-section h3 {
    margin-bottom: 15px;
    color: #333;
}

.links-section {
    background: #e3f2fd;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.link-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #ddd;
}

.link-item:last-child {
    border-bottom: none;
}

.link-item a {
    color: #2196F3;
    text-decoration: none;
}

.link-item a:hover {
    text-decoration: underline;
}

.product-item {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 15px;
}

.product-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.product-actions {
    display: flex;
    gap: 10px;
}

.btn-small {
    padding: 5px 10px;
    font-size: 12px;
    border-radius: 4px;
    border: none;
    cursor: pointer;
}

.btn-edit {
    background: #2196F3;
    color: white;
}

.btn-delete {
    background: #f44336;
    color: white;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: white;
    margin: 15% auto;
    padding: 20px;
    border-radius: 10px;
    width: 80%;
    max-width: 500px;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: black;
}