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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #e8eaf6 0%, #f5f5f5 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.auth-container {
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    width: 100%;
    max-width: 420px;
    overflow: hidden;
}

.tabs {
    display: flex;
    background: #f8f9fa;
    border-bottom: 2px solid #e0e0e0;
}

.tab {
    flex: 1;
    padding: 18px;
    text-align: center;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    color: #757575;
    transition: all 0.3s ease;
    position: relative;
}

.tab:hover {
    background: #f0f0f0;
}

.tab.active {
    color: #5c6bc0;
    background: #ffffff;
}

.tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: #5c6bc0;
}

.form-container {
    padding: 40px 35px;
}

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

label {
    display: block;
    margin-bottom: 8px;
    color: #424242;
    font-size: 14px;
    font-weight: 500;
}

.required {
    color: #d32f2f;
}

input[type="text"],
input[type="number"],
input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #d0d0d0;
    border-radius: 6px;
    font-size: 15px;
    color: #424242;
    background: #fafafa;
    transition: all 0.3s ease;
}

input:focus {
    outline: none;
    border-color: #5c6bc0;
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(92, 107, 192, 0.1);
}

.submit-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #5c6bc0 0%, #7986cb 100%);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.submit-btn:hover {
    background: linear-gradient(135deg, #4e5bb5 0%, #6a78c1 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(92, 107, 192, 0.3);
}

.checkbox-group {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-right: 8px;
    cursor: pointer;
}

.checkbox-group label {
    margin-bottom: 0;
    font-size: 13px;
    color: #616161;
    font-weight: 400;
    cursor: pointer;
}

.hidden {
    display: none;
}

.alert {
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-error {
    background: #ffebee;
    color: #c62828;
    border: 1px solid #ef9a9a;
}

.alert-success {
    background: #e8f5e9;
    color: #2e7d32;
    border: 1px solid #81c784;
}

.head {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin: 10px;
    text-align: center;
}