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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #ffffff;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.auth-container {
    width: 100%;
    max-width: 450px;
    padding: 20px;
}

.auth-box {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    padding: 40px;
}

.logo-section {
    text-align: center;
    margin-bottom: 30px;
}

.logo-img {
    width: 120px;
    height: 120px;
    object-fit: contain;
    border-radius: 15px;
    margin-bottom: 15px;
}

.logo-section h1 {
    font-size: 32px;
    color: #333;
    margin-bottom: 8px;
}

.logo-section p {
    color: #666;
    font-size: 14px;
}

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
}

.tab-button {
    flex: 1;
    padding: 12px;
    border: none;
    background: #f0f0f0;
    color: #666;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-button.active {
    background: #667eea;
    color: white;
}

.tab-button:hover:not(.active) {
    background: #e0e0e0;
}

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

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 600;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.btn-primary {
    width: 100%;
    padding: 14px;
    border: none;
    background: #667eea;
    color: white;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: #5568d3;
    transform: translateY(-1px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

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

.message {
    padding: 12px;
    border-radius: 8px;
    margin-top: 15px;
    font-size: 14px;
    text-align: center;
    display: none;
}

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

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

.message.info {
    display: block;
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.info-text {
    margin-top: 10px;
    font-size: 13px;
    color: #666;
    text-align: center;
}

@media (max-width: 500px) {
    .auth-box {
        padding: 25px;
    }

    .logo-img {
        width: 100px;
        height: 100px;
    }

    .logo-section h1 {
        font-size: 26px;
    }
}