* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #f4f6f9;
    padding: 20px;
}

.login-container {
    background: #ffffff;
    padding: 40px 30px;
    width: 100%;
    max-width: 400px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h2 {
    color: #333333;
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 8px;
}

.login-header p {
    color: #888888;
    font-size: 14px;
}

.input-group {
    position: relative;
    margin-bottom: 20px;
}

.input-group input {
    width: 100%;
    padding: 14px 60px 14px 16px;
    font-size: 16px;
    border: 1px solid #dddddd;
    border-radius: 8px;
    outline: none;
    background-color: #ffffff;
    color: #333333;
}

.input-group input:focus {
    border-color: #007aff;
}

.toggle-password {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    user-select: none;
    color: #007aff;
    font-size: 14px;
}

.error-message {
    color: #ff3b30;
    font-size: 13px;
    margin-top: -10px;
    margin-bottom: 15px;
    min-height: 18px;
    opacity: 0;
}

.error-message.show {
    opacity: 1;
}

button {
    width: 100%;
    padding: 14px;
    background-color: #007aff;
    color: #ffffff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
}

button:hover {
    background-color: #0062cc;
}

button:active {
    transform: scale(0.99);
}

@media (max-width: 480px) {
    .login-container {
        padding: 30px 20px;
    }
}