* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #333;
}

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

.form-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.form-toggle {
    display: flex;
    background: #f5f5f5;
}

.toggle-btn {
    flex: 1;
    padding: 15px;
    border: none;
    background: transparent;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.toggle-btn.active {
    background: #764ba2;
    color: white;
}

.form-content {
    padding: 30px;
}

.form {
    display: none;
}

.form.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

h2 {
    text-align: center;
    margin-bottom: 25px;
    color: #333;
}

.input-group {
    position: relative;
    margin-bottom: 25px;
}

.input-group input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #f9f9f9;
}

.input-group input:focus {
    outline: none;
    border-color: #764ba2;
    box-shadow: 0 0 0 2px rgba(118, 75, 162, 0.2);
}

.input-group label {
    position: absolute;
    top: 12px;
    left: 15px;
    color: #999;
    pointer-events: none;
    transition: all 0.3s ease;
    background: #f9f9f9;
    padding: 0 5px;
}

.input-group input:focus + label,
.input-group input:not(:placeholder-shown) + label {
    top: -10px;
    left: 10px;
    font-size: 0.8rem;
    color: #764ba2;
}

.toggle-password {
    position: absolute;
    right: 15px;
    top: 12px;
    cursor: pointer;
    user-select: none;
}

.submit-btn {
    width: 100%;
    padding: 12px;
    background: #764ba2;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    background: #5a3a7e;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.message {
    padding: 15px;
    margin: 0 30px 30px;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    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;
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }
    
    .form-content {
        padding: 20px;
    }
}